Application Technique
PowerFlex Dynamic Braking Resistor Calculator
Catalog Numbers 20A, 20B, 20F, 20G, 22A, 22B
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Table of Contents
Chapter 1
Understanding How Dynamic Braking
Works
This section provides an overview of the components required to do Dynamic
Braking and their functionality.
How Dynamic Braking Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Dynamic Brake Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 2
Determining Dynamic Brake
Requirements
This section steps you through the calculations necessary to determine the
amount of Dynamic Braking required for your application.
How to Determine Dynamic Brake Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Determine Values of Equation Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Example Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 3
Evaluating the PowerFlex 7-Class
Internal Resistor
This section steps you through the process to determine whether or not the
available PowerFlex internal resistors are adequate for your application.
Evaluating the Capability of the Internal Dynamic Brake Resistor . . . . . . . . . . . 21
PowerFlex 70 Power Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PowerFlex 700 Power Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Chapter 4
Selecting An External Resistor for
PowerFlex
7-Class Drives
Evaluating the PowerFlex 750-Series
Internal Resistor
This section steps you through the process of selecting an external resistor when
the internal resistors prove to be insufficient for your application.
How to Select an External Dynamic Brake Resistor for
PowerFlex 7-Class Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
How to Evaluate a PowerFlex 750-Series Internal Resistor. . . . . . . . . . . . . . . . . . 34
Appendix A
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
3
Table of Contents
4
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter
1
Understanding How Dynamic Braking Works
How Dynamic Braking Works
When an induction motor’s rotor is turning slower than the synchronous speed
set by the drive’s output power, the motor is transforming electrical energy
obtained from the drive into mechanical energy available at the drive shaft of the
motor. This process is referred to as motoring. When the rotor is turning faster
than the synchronous speed set by the drive’s output power, the motor is
transforming mechanical energy available at the drive shaft of the motor into
electrical energy that can be transferred back to the drive. This process is referred
to as regeneration.
Most AC PWM drives convert AC power from the fixed frequency utility grid
into DC power by means of a diode rectifier bridge or controlled SCR bridge
before it is inverted into variable frequency AC power. Diode and SCR bridges
are cost effective, but can only handle power in the motoring direction.
Therefore, if the motor is regenerating, the bridge cannot conduct the necessary
negative DC current, the DC bus voltage will increase and cause an overvoltage
fault at the drive. More complex bridge configurations use SCRs or transistors
that can transform DC regenerative electrical power into fixed frequency utility
electrical energy. This process is known as line regeneration.
A more cost effective solution can be provided by allowing the drive to feed the
regenerated electrical power to a resistor which transforms it into thermal energy.
This process is referred to as dynamic braking.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
5
Chapter 1
Understanding How Dynamic Braking Works
Dynamic Brake Components
A Dynamic Brake consists of a Chopper (the chopper transistor and related
control components are built into PowerFlex drives) and a Dynamic Brake
Resistor.
Figure 1 shows a simplified Dynamic Braking schematic.
Figure 1 - Simplified Dynamic Brake Schematic
+ DC Bus
FWD
Voltage
Divider
Dynamic
Brake
Resistor
To
Voltage
Control
Signal
Common
To
Voltage Dividers
Chopper Transistor
Voltage Control
Chopper
Transistor
FWD
Voltage
Divider
To
Voltage
Control
– DC Bus
Chopper
The Chopper is the Dynamic Braking circuitry that senses rising DC bus voltage
and shunts the excess energy to the Dynamic Brake Resistor. A Chopper contains
three significant power components:
The Chopper Transistor is an Isolated Gate Bipolar Transistor (IGBT). The
Chopper Transistor is either ON or OFF, connecting the Dynamic Brake
Resistor to the DC bus and dissipating power, or isolating the resistor from the
DC bus. The most important rating is the collector current rating of the Chopper
Transistor that helps to determine the minimum resistance value used for the
Dynamic Brake Resistor.
6
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Understanding How Dynamic Braking Works
Chapter 1
Chopper Transistor Voltage Control regulates the voltage of the DC bus during
regeneration. The average values of DC bus voltages are:
Drive Input Voltage
208
240
400
480
575
600
600 (Frame 5 & 6)
690
Transistor Turn-On
Voltage
375V DC
375V DC
750V DC
750V DC
937.5V DC
937.5V DC
1076V DC
1076V DC
Maximum Power Calculation
Voltage
395V DC
395V DC
790V DC
790V DC
987V DC
987V DC
1135V DC
1135V DC
Voltage dividers reduce the DC bus voltage to a value that is usable in signal
circuit isolation and control. The DC bus feedback voltage from the voltage
dividers is compared to a reference voltage to actuate the Chopper Transistor.
The Freewheel Diode (FWD), in parallel with the Dynamic Brake Resistor,
allows any magnetic energy stored in the parasitic inductance of that circuit to be
safely dissipated during turn off of the Chopper Transistor.
Resistor
The Resistor dissipates the regenerated energy in the form of heat. The
PowerFlex Family of Drives can use either the internal dynamic brake resistor
option or an externally mounted dynamic brake resistor wired to the drive.
Wiring
Frames 0…4
Wire to the DB resistor should be no longer than 10 feet from the drive
terminals. Wire should be twisted to minimize inductance.
Frames 5…6
Wire to the DB resistor should be no longer than 100 feet from the drive
terminals.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
7
Chapter 1
Understanding How Dynamic Braking Works
Notes:
8
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter
2
Determining Dynamic Brake Requirements
How to Determine Dynamic
Brake Requirements
When a drive is consistently operating in the regenerative mode of operation,
serious consideration should be given to equipment that will transform the
electrical energy back to the fixed frequency utility grid.
As a general rule, Dynamic Braking can be used when the need to dissipate
regenerative energy is on an occasional or periodic basis. In general, the motor
power rating, speed, torque, and details regarding the regenerative mode of
operation will be needed in order to estimate what Dynamic Brake Resistor value
is needed.
The Peak Regenerative Power and Average Regenerative Power required for
the application must be calculated in order to determine the resistor needed for
the application. Once these values are determined, the resistors can be chosen. If
an internal resistor is chosen, the resistor must be capable of handling the
regenerated power or the drive will trip. If an external resistor is chosen, in
addition to the power capabilities, the resistance must also be less than the
application maximum and greater than the drive minimum or the drive will trip.
The power rating of the Dynamic Brake Resistor is estimated by applying what is
known about the drive’s motoring and regenerating modes of operation. The
Average Power Dissipation must be estimated and the power rating of the
Dynamic Brake Resistor chosen to be greater than that average. If the Dynamic
Brake Resistor has a large thermodynamic heat capacity, then the resistor element
will be able to absorb a large amount of energy without the temperature of the
resistor element exceeding the operational temperature rating. Thermal time
constants in the order of 50 seconds and higher satisfy the criteria of large heat
capacities for these applications. If a resistor has a small heat capacity (defined as
thermal time constants less than 5 seconds) the temperature of the resistor
element could exceed its maximum.
Peak Regenerative Power can be calculated as:
• Horsepower (English units)
• Watts (The International System of Units, SI)
• Per Unit System (pu) which is relative to a value
The final number must be in watts of power to estimate the resistance value of the
Dynamic Brake Resistor. The following calculations are demonstrated in SI units.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
9
Chapter 2
Determining Dynamic Brake Requirements
Gather the Following Information
• Power rating from motor nameplate in watts, kilowatts, or horsepower
• Speed rating from motor nameplate in rpm or rps (radians per second)
• Required decel time (per Figure 2, t3 – t2). This time is a process
requirement and must be within the capabilities of the drive programming.
• Motor inertia and load inertia in kg•m2 or WK2 in lb•ft2
• Gear ratio (GR) if a gear is present between the motor and load
• Motor shaft speed, torque, and power profile of the drive application
Figure 2 shows typical application profiles for speed, torque and power. The
examples are for cyclical application that is periodic over t4 seconds. The
following variables are defined for Figure 2:
ω(t)
=
---------Motor shaft speed in radians per second (rps) ω = 2πN
N
=
Motor shaft speed in Revolutions Per Minute (RPM)
T(t)
=
Motor shaft torque in Newton-meters
60
1.0 lb•ft = 1.355818 N•m
P(t)
=
Motor shaft power in watts
1.0 HP = 746 watts
10
ωb
=
Rad
Rated angular rotational speed ----------
ωo
=
Rad
Angular rotational speed less than ω b (can equal 0) ----------
-Pb
=
Motor shaft peak regenerative power in watts
s
s
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Determining Dynamic Brake Requirements
Chapter 2
Figure 2 - Application Speed, Torque and Power Profiles
Speed
ω(t)
ωb
ωo
0
t1
t2
t3
t4
t1 + t4
t
t1
t2
t3
t4
t1 + t4
t
t1
t2
t3
t4
t1 + t4
t
t1
t2
t3
t4
t1 + t4
t
Torque
T(t)
0
Power
P(t)
0
-Pb
Drive Rated
Regen Power
Prg
0
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
11
Chapter 2
Determining Dynamic Brake Requirements
Determine Values of
Equation Variables
Step 1 – Total Inertia
2
J T = J m + ( GR × J L )
JT
=
Total inertia reflected to the motor shaft
(kg•m2 or WK2 in lb•ft2)
Jm
=
Motor inertia (kg•m2 or WK2 in lb•ft2)
GR
=
Gear ratio for any gear between motor and load (dimensionless)
Load Speed
GR = ----------------------------Motor Speed
If the gear ratio is 2:1 then GR = 1- = 0.5
2
JL
=
Load inertia (kg•m2 or WK2 in lb•ft2)
1.0 lb•ft2 = 0.04214011 kg•m2
Calculate Total Inertia:
J T = [ oooooooooo ] + ( oooooooooo × oooooooooo )
Record Total Inertia:
JT
12
=
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Determining Dynamic Brake Requirements
Chapter 2
Step 2 – Peak Braking Power
JT[ ω b ( ω b – ω o ) ]
P b = ----------------------------------------( t3 – t2 )
Pb
=
Peak braking power (watts)
1.0 HP = 746 watts
JT
=
Total inertia reflected to the motor shaft (kg•m2)
ωb
=
2πN
Rated angular rotational speed Rad
---------- = ------------b
ωo
=
Angular rotational speed,
s
60
Rad
less than rated speed down to zero ---------s
Nb
=
Rated motor speed (RPM)
Deceleration time from ωb to ωo (seconds)
t3 – t2 =
Calculate Peak Braking Power:
[ ooooooooo ] × [ ooooooooo ] × ( ooooooooo – ooooooooo )
P b = -------------------------------------------------------------------------------------------------------------------------------------------------------( ooooooooo – ooooooooo )
Record Peak Braking Power:
Pb
=
Compare the peak braking power (Pb) to the drive rated regenerative power (Prg ).
If the peak braking power is greater than the drive rated regenerative power, the
decel time will have to be increased so that the drive does not enter current limit.
Drive rated regenerative power (Prg ) is determined by:
2
V
P rg = ----R
Prg
=
Drive rated regenerative power
V
=
DC bus regulation voltage from Appendix A
R
=
Minimum brake resistance fromAppendix A
2
[ ooooooooo ]
P rg = -----------------------------------( ooooooooo )
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
13
Chapter 2
Determining Dynamic Brake Requirements
Record Rated Regenerative Power:
Prg
=
For the purposes of this document, it is assumed that the motor used in the
application is capable of producing the required regenerative torque and power.
Step 3 – Minimum Power Requirements for the Dynamic Brake
Resistors
It is assumed that the application exhibits a periodic function of acceleration and
deceleration. If (t3 – t2) equals the time in seconds necessary for deceleration from
rated speed to ωo speed, and t4 is the time in seconds before the process repeats
itself, then the average duty cycle is (t3 – t2)/t4. The power as a function of time is a
linearly decreasing function from a value equal to the peak regenerative power to
some lesser value after (t3 – t2) seconds have elapsed. The average power regenerated
over the interval of (t3 – t2) seconds is: P ( ω + ω )
b
o
-----b- × ----------------------2
ωb
Pav
=
t 3 – t2 =
Average dynamic brake resister dissipation (watts)
Deceleration time from ωb to ωo (seconds)
t4
=
Total cycle time or period of process (seconds)
Pb
=
Peak braking power (watts)
ωb
=
Rad
Rated angular rotational speed ----------
ωo
=
Angular rotational speed,
s
Rad
less than rated speed down to zero ---------s
IMPORTANT
14
If application cycle time exceeds 900 seconds, for calculation purposes
t4 will be equal to 900 plus the decel time. This is because the resistor
will have cooled completely after 15 minutes.
If t4 > 900 then t4 = 900 + (t3 - t2).
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Determining Dynamic Brake Requirements
Chapter 2
The Average Power in watts regenerated over the period t4 is:
( t3 – t2 ) Pb ( ω b + ω o )
P av = ------------------ ------ -----------------------2
t4
ωb
Calculate Average Power in watts regenerated over the period t4:
( oooooo – oooooo )
[ oooooo ]
( oooooo + oooooo )
P av = -------------------------------------------------- × ------------------------ × -------------------------------------------------[ oooooo ]
2
[ oooooo ]
Record Average Power in watts regenerated over the period t4:
Pav
=
Step 4 – Percent Average Load of the Internal Dynamic Brake Resistor
Skip this calculation if an external dynamic brake resistor will be used.
P av
AL = --------- × 100
P db
AL
=
Average load in percent of dynamic brake resistor.
Important: The value of AL should not exceed 100%.
Pav
=
Average dynamic brake resistor dissipation calculated in Step 3
(watts)
Pdb
=
Steady state power dissipation capacity of dynamic brake
resistors obtained from Appendix A (watts)
Calculate Percent Average Load of the dynamic brake resistor:
[ oooooooooo ]
AL = -------------------------------------- × 100
[ oooooooooo ]
Record Percent Average Load of the dynamic brake resistor:
AL
=
The calculation of AL is the Dynamic Brake Resistor load expressed as a percent. Pdb
is the sum of the Dynamic Brake dissipation capacity and is obtained from the
minimum dynamic brake resistance table in Appendix A. This will give a data
point for a line to be drawn on one the curves provided in Chapter 3.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
15
Chapter 2
Determining Dynamic Brake Requirements
Step 5 – Percent Peak Load of the Internal Dynamic Brake Resistor
Skip this calculation if an external dynamic brake resistor will be used.
Pb
PL = --------- × 100
P db
PL
=
Peak load in percent of dynamic brake resistor
Pav
=
Peak braking power calculated in Step 2 (watts)
Pdb
=
Steady state power dissipation capacity of dynamic brake
resistors obtained from Appendix A (watts)
Calculate Percent Peak Load of the dynamic brake resistor:
[ oooooooooo ]
PL = -------------------------------------- × 100
[ oooooooooo ]
Record Percent Average Load of the dynamic brake resistor:
PL
=
The calculation of PL in percent gives the percentage of the instantaneous power
dissipated by the Dynamic Brake Resistors relative to the steady state power
dissipation capacity of the resistors. This will give a data point to be drawn on one
of the curves provided in Chapter 3.
16
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Determining Dynamic Brake Requirements
Example Calculation
Chapter 2
A 10 HP, 4 Pole, 480 Volt motor and drive is accelerating and decelerating as
depicted in Figure 2.
• Cycle period t4 is 40 seconds
• Rated speed is 1785 RPM and is to be decelerated to 0 speed in 15.0
seconds
• Motor load can be considered purely as inertia, and all power expended or
absorbed by the motor is absorbed by the motor and load inertia
• Load inertia is 4.0 lb•ft2 and is directly coupled to the motor
• Motor rotor inertia is 2.2 lb•ft2
• A PowerFlex 70, 10 HP 480V Normal Duty rating is chosen.
Calculate the necessary values to choose an acceptable Dynamic Brake.
Rated Power = 10 HP × 746 watts = 7.46 kW
This information was given and must be known before the calculation process
begins. This can be given in HP, but must be converted to watts before it can be
used in the equations.
1785
RadRated Speed = ω b = 1785 RPM = 2π × --------- = 186.98
-------------------60
s
0
0 Rad
Lower Speed = ω o = 0 RPM = 2π × ---- = ---------60
s
This information was given and must be known before the calculation process
begins. This can be given in RPM, but must be converted to radians per second
before it can be used in the equations.
Total Inertia = J T = 6.2 ( 12.4 ) lb•ft 2 = 0.261 kg•m 2
This value can be in lb•ft2 or Wk2, but must be converted into kg•m2 before it
can be used in the equations.
Deceleration Time = ( t 3 – t 2 ) = 15 seconds
Period of Cycle = t 4 = 40 seconds
V d = 790 Volts
This was known because the drive is rated at 480 Volts rms. If the drive were rated
230 Volts rms, then Vd = 395 Volts.
All of the preceding data and calculations were made from knowledge of the
application under consideration. The total inertia was given and did not need
further calculations as outlined in Step 1.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
17
Chapter 2
Determining Dynamic Brake Requirements
JT [ ω b ( ω b – ω o ) ]
Peak Braking Power = P b = ----------------------------------------( t3 – t2 )
0.261 [ 186.92 ( 186.92 – 0 ) ]
P b = ------------------------------------------------------ = 607.9 watts
15
Note that this is 8.1% of rated power and is less than the maximum drive limit of
150% current limit. This calculation is the result of Step 2 and determines the
peak power that must be dissipated by the Dynamic Brake Resistor.
( t3 – t2 ) Pb ( ω b + ω o )
Average Braking Power = P av = ------------------ ------ -----------------------2
t4
ωb
15 607.9 186.92 + 0
P av = ⎛ ----⎞ ⎛ ----------⎞ ⎛ ---------------------⎞ = 113.9 watts
⎝ 40⎠ ⎝ 2 ⎠ ⎝ 186.92 ⎠
This is the result of calculating the average power dissipation as outlined in
Step 4. Verify that the sum of the power ratings of the Dynamic Brake Resistors
chosen in Step 3 is greater than the value calculated in Step 4.
For an internal resistor, refer to Appendix A to determine the continuous power
rating of the resistor in the given drive you are using. Skip this calculation if an
external dynamic brake resistor will be used.
In this case, a 10 HP PowerFlex 70 drive has an internal resistor rated for 40
continuous watts. Because Pav = 114.1 watts, and is greater than the resistor’s
continuous watts rating, the drive will eventually trip on a Resistor Over Heated
fault. Calculate the minimum cycle time (in seconds) using the formula in
Chapter 3, Step 2B.
⎛ 607.9
---------- × 15⎞
⎝ 2
⎠
--------------------------- = 113.9 seconds
40
Recalculate the average power dissipation.
15
607.9 186.92 + 0
P av = ⎛ ----------⎞ ⎛ ----------⎞ ⎛ ---------------------⎞ = 40 watts
⎝ 114.1⎠ ⎝ 2 ⎠ ⎝ 186.92 ⎠
If the cycle cannot be adjusted, the decel time must be extended or the system
inertia lowered to reduce the average load on the resistor. Another option is to
use an external resistor.
Calculate the Percent Average Load. You will need this number to calculate the
Percent Peak Load.
18
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Determining Dynamic Brake Requirements
Chapter 2
P av
Percent Average Load = AL = 100 × --------P db
40
AL = 100 × ---- = 100%
40
Important: The value of AL should not exceed 100%.
This is the result of the calculation outlined in Step 5. Record this value on
page 21.
Pb
Percent Peak Load = PL = 100 × --------P db
607.9
PL = 100 × ---------- = 1520%
40
This is the result of the calculation outlined in Step 5. Record this value on
page 21.
Now that the values of AL and PL have been calculated, they can be used to
determine whether an internal or external resistor can be used. Since the internal
resistor package offers significant cost and space advantages, it will be evaluated
first.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
19
Chapter 2
Determining Dynamic Brake Requirements
Notes:
20
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter
3
Evaluating the PowerFlex 7-Class Internal
Resistor
Evaluating the Capability of
the Internal Dynamic Brake
Resistor
To investigate the capabilities of the internal resistor package, the values of AL
(Average Percent Load) and PL (Peak Percent Load) are plotted onto a graph of
the Dynamic Brake Resistor’s constant temperature power curve and connected
with a straight line. If any portion of this line lies to the right of the constant
temperature power curve, the resistor element temperature will exceed the
operating temperature limit.
IMPORTANT
The drive will protect the resistor and shut down the Chopper transistor. The
drive will then likely trip on an overvoltage fault.
1. Record the values calculated in Chapter 2.
AL
=
PL
=
t3 – t2 =
Pave
=
2A. Compare the calculated average power to the continuous rating of the
dynamic brake resistor in the frame drive you have selected.
See Appendix A.
Record the resistor’s continuous rating.
Rcont. =
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
21
Chapter 3
Evaluating the PowerFlex 7-Class Internal Resistor
2B. If Pave is greater than Rcont. you will need to extend the cycle time (in
seconds) by the result of the following equation.
P
⎛ -----b- × Decel⎞
⎝ 2
⎠
--------------------------------- = sec onds
R cont
3. Find the correct constant temperature Power Curve for your drive type,
voltage and frame.
Power Curves for PowerFlex 70 Internal DB Resistors
Drive Voltage
240
240
240
400/480
400/480
400/480
Drive Frame(s)
Figure Number
A and B
C
D
A and B
C
D
3
5
6
7
8
9
OR
Power Curves for PowerFlex 700 Internal DB Resistors
Drive Voltage
400/480
400/480
400/480
400/480
Drive Frame
0
1
2
3
Figure Number
15
16
17
Uses external DB resistors only.
Refer to Chapter 4
4. Plot the point where the value of AL, calculated in Step 4 of Chapter 2, and
the desired deceleration time (t3 – t2) intersect.
5. Plot the value of PL, calculated in Step 5 of Chapter 2, on the vertical axis (0
seconds).
6. Connect AL at (t3 – t2) and PL at 0 seconds with a straight line. This line is the
power curve described by the motor as it decelerates to minimum speed.
22
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Evaluating the PowerFlex 7-Class Internal Resistor
Chapter 3
If the line connecting AL and PL lies entirely to the left of the Power Curve, then the
capability of the internal resistor is sufficient for the proposed application.
Figure 3 - Example of an Acceptable Resistor Power Curve
3000
480V Frame C
2800
2600
2400
2200
% Peak Power
2000
1800
PL (Peak Percent Load) = 1521%
1600
1400
1200
1000
800
600
400
AL (Average Percent Load) = 100%
200
Decel Time = 15.0 Seconds
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
If any portion of the line connecting AL and PL lies to the right of the Power Curve,
then the capability of the internal resistor is insufficient for the proposed
application.
• Increase deceleration time (t3 – t2) until the line connecting AL and PL lies
entirely to the left of the Power Curve
or
• Go to Chapter 4 and select an external resistor from the tables
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
23
Chapter 3
Evaluating the PowerFlex 7-Class Internal Resistor
PowerFlex 70 Power Curves
Figure 4 - PowerFlex 70 – 240 Volt, Frames A and B
3000
240V Frames A & B
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Figure 5 - PowerFlex 70 – 240 Volt, Frame C
3000
240V Frame C
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
24
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Evaluating the PowerFlex 7-Class Internal Resistor
Chapter 3
Figure 6 - PowerFlex 70 – 240 Volt, Frame D
3000
240V Frame D
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Figure 7 - PowerFlex 70 – 480 Volt, Frames A and B
3000
480V Frames A & B
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
25
Chapter 3
Evaluating the PowerFlex 7-Class Internal Resistor
Figure 8 - PowerFlex 70 – 480 Volt, Frame C
3000
480V Frame C
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Figure 9 - PowerFlex 70 – 480 Volt, Frame D
3000
480V Frame D
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
26
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Evaluating the PowerFlex 7-Class Internal Resistor
Chapter 3
Figure 10 - PowerFlex 70 – 600 Volt, Frames A and B
3000
600V Frames A & B
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Figure 11 - PowerFlex 70 – 600 Volt, Frame C
3000
600V Frame C
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Decel Time (Seconds)
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
27
Chapter 3
Evaluating the PowerFlex 7-Class Internal Resistor
PowerFlex 700 Power Curves
Figure 12 - PowerFlex 700 – 240 Volt, Frame 1 to 5 HP
3000
240V Frame 1 to 5 HP
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Decel Time (Seconds)
Figure 13 - PowerFlex 700 – 240 Volt, Frame 1 - 7.5 HP
3000
240V Frame 1 - 7.5 HP
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
Decel Time (Seconds)
28
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
13
14
15
16
17
18
19
20
Evaluating the PowerFlex 7-Class Internal Resistor
Chapter 3
Figure 14 - PowerFlex 700 – 240 Volt, Frame 2
3000
240V Frame 2
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
19
20
Decel Time (Seconds)
Figure 15 - PowerFlex 700 – 480 Volt, Frame 0
3000
400V Frame 0
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Decel Time (Seconds)
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
29
Chapter 3
Evaluating the PowerFlex 7-Class Internal Resistor
Figure 16 - PowerFlex 700 – 480 Volt, Frame 1
3000
480V Frame 1
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
19
20
Decel Time (Seconds)
Figure 17 - PowerFlex 700 – 480 Volt, Frame 2
3000
480V Frame 2
2800
2600
2400
2200
% Peak Power
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
9
10
11
12
Decel Time (Seconds)
30
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
13
14
15
16
17
18
Chapter
4
Selecting An External Resistor for PowerFlex
7-Class Drives
Evaluating the PowerFlex 750-Series Internal
Resistor
How to Select an External
Dynamic Brake Resistor for
PowerFlex 7-Class Drives
In order to select the appropriate External Dynamic Brake Resistor for your
application, the following data must be calculated.
Peak Regenerative Power
(Expressed in watts)
This value is used to determine the maximum resistance value of the Dynamic
Brake Resistor. If this value is greater than the maximum imposed by the peak
regenerative power of the drive, the drive can trip off due to transient DC bus
overvoltage problems.
Power Rating of the Dynamic Brake Resistor
The average power dissipation of the regenerative mode must be estimated and
the power rating of the Dynamic Brake Resistor chosen to be greater than the
average regenerative power dissipation of the drive.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
31
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Protecting External Resistor Packages
ATTENTION: PowerFlex drives do not offer protection for externally mounted
brake resistors. A risk of fire exists if external braking resistors are not protected.
External resistor packages must be self-protected from over temperature or the
protective circuit show below, or equivalent, must be supplied.
Figure 18 - External Brake Resistor Circuitry
Three-Phase
AC Input
(Input Contactor) M
R (L1)
S (L2)
T (L3)
Power Off
Power On
M
M
Power Source
32
DB Resistor Thermostat
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Chapter 4
Record the Values Calculated in Section 2
Pb
=
Pav
=
Calculate Maximum Dynamic Brake Resistance Value
When using an internal Dynamic Brake Resistor, the value is fixed. However,
when choosing an external resistor, the maximum allowable Dynamic Brake
resistance value (Rdb1) must be calculated.
( Vd )2
R db1 = -----------Pb
Rdb1 = Maximum allowable value for the dynamic brake resistor (ohms)
Vd
= DC bus voltage used for calculating maximum power.
(395V DC, 790V DC, 987V DC, or 1135V DC)
Pb
= Peak breaking power calculated in Chapter 2: Step 2 (watts)
Calculate Maximum Dynamic Brake Resistance:
( ooooooooo ) 2
R db1 = -----------------------------------[ ooooooooo ]
Record Maximum Dynamic Brake Resistance:
Rdb1 =
The choice of the Dynamic Brake resistance value should be less than the value
calculated in this step. If the value is greater, the drive can trip on DC bus
overvoltage.
Calculate required joule rating (joules = watt-seconds):
P
⎛ -----b-⎞ × ( t – t ) = watt-seconds
3
2
⎝ 2⎠
Pb
watt-second losses = ------ × ( t 3 – t 2 ) × [ 1 – ( motor efficiency × drive efficiency ) ]
2
Drive Efficiency = 0.975
Total watt-seconds = watt-seconds – watt-second losses
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
33
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Select Resistor
Select a resistor bank from the following tables or from your resistor supplier that
has all of the following:
• a resistance value that is less than the value calculated (Rdb1 in ohms)
• a resistance value that is greater than the minimum resistance listed in
Appendix A
• a power value that is greater than the value calculated in Step 3
(Pav in watts)
• a watt-second value greater than the value calculated.
ATTENTION: The internal dynamic brake IGBT will be damaged if the resistance
value of the resistor bank is less than the minimum resistance value of the drive.
Use Appendix A to verify that the resistance value of the selected resistor
bank is greater than the minimum resistance of the drive.
If no resistor appears in the following tables that is greater than the minimum
allowable resistance and is less than the calculated maximum resistance:
• Adjust the deceleration time of the application to fit an available resistor
package.
or
• Use the calculated data to purchase resistors locally.
or
• Consult the factory for other possible resistor packages.
How to Evaluate a PowerFlex
750-Series Internal Resistor
Calculate required joule rating (joules = watt-seconds):
P
⎛ -----b-⎞ × ( t – t ) = watt-seconds
3
2
⎝ 2⎠
Record Joule Rating (can not exceed 10,500 watt-seconds):
ws
34
=
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Chapter 4
Table 1 - Resistor Selection
Ohms
Watts
956.00 Ohms
956.00
179
956.00
242
956.00
400
956.00
597
956.00
605
956.00
915
695.00
248
695.00
333
695.00
553
695.00
825
695.00
832
695.00
1200
695.00
1258
615.00 Ohms
615.00
180
615.00
242
615.00
404
615.00
602
615.00
605
615.00
800
615.00
915
546.00 Ohms
546.00
316
546.00
424
546.00
707
546.00
800
546.00
1055
546.00
1059
546.00
1200
546.00
1600
546.00
1601
439.00 Ohms
439.00
254
439.00
339
439.00
568
439.00
800
439.00
847
439.00
848
439.00
1200
439.00
1281
364.00 Ohms
364.00
400
364.00
477
364.00
635
364.00
800
364.00
1065
364.00
1200
364.00
1588
364.00
1590
364.00
1600
364.00
2000
364.00
2402
360.00 Ohms
360.00
86
342.00 Ohms
342.00
329
Watt Seconds
Catalog
Manufacturer
4225
4225
6260
6260
6260
6260
4929
4929
7981
7981
7981
35600
15258
552-1A
552-1
555-1A
550-1A
555-1
550-1
552-2A
552-2
555-2A
550-2A
555-2
PR550-2
550-2
PG/PG/IPC
PG/PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
4225
4225
4225
13302
13615
31500
13302
442-1A
442-1
445-1A
440-1A
445-1
PR445-1
440-1
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
5634
12050
12050
28000
23004
23004
28000
28000
36619
552-3A
552-3
555-3A
PR552-3
550-3A
555-3
PR555-3
PR550-3
550-3
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
2973
2973
2973
22500
11267
9389
22500
24647
442-2A
442-2
445-2A
PR445-2
445-2
440-2A
PR440-2
440-2
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
18600
3990
15336
18600
24412
18600
38496
38496
18600
29100
39514
PR5510-4
552-4A
552-4
PR552-4
555-4A
PR555-4A
555-4
550-4A
PR555-4
PR550-4
550-4
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
17000
AKR2360P500
Rockwell
3677
442-3A
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
35
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
Watts
342.00
435
342.00
734
342.00
800
342.00
1088
342.00
1096
342.00
1200
342.00
1600
342.00
1645
283.00 Ohms
283.00
614
283.00
800
283.00
817
283.00
1200
283.00
1372
283.00
2000
283.00
2043
283.00
2048
283.00
2800
283.00
3089
237.00 Ohms
237.00
400
237.00
473
237.00
628
237.00
800
237.00
1057
237.00
1200
237.00
1570
237.00
1577
237.00
1600
237.00
2000
237.00
196.00 Ohms
196.00
196.00
196.00
196.00
196.00
196.00
196.00
196.00
196.00
196.00
196.00
196.00
181.00 Ohms
181.00
181.00
181.00
181.00
181.00
181.00
181.00
181.00
181.00
181.00
181.00
154.00 Ohms
154.00
154.00
36
Watt Seconds
3677
14397
17500
23473
22534
17500
27400
36306
Catalog
442-3
445-3A
PR445-3A
445-3
440-3A
PR445-3
PR440-3
440-3
Manufacturer
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
19092
14500
19092
14500
30046
40900
48120
47338
100700
76680
552-5A
PR5510-5
552-5
PR555-5A
555-5A
PR555-5
555-5
550-5A
PR550-5
550-5
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
12100
5321
15649
12100
25351
18900
38496
39748
34300
47200
PR4405-4
442-4A
442-4
PR442-4
445-4A
PR445-4A
445-4
440-4A
PR445-4
PR440-4
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
2373
61422
440-4
PG/IPC
400
800
890
1180
1200
1600
1987
2400
2950
2965
4000
4460
10000
10000
20970
33567
28300
39000
53519
69800
83096
83096
175800
130669
PR5505-6
PR5510-6
552-6A
552-6
PR552-6
PR555-6A
555-6A
PR555-6
555-6
550-6A
PR550-6
550-6
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
400
620
800
822
1200
1385
2000
2055
2068
2800
3108
9200
19248
9200
19248
26100
30985
64400
77853
77853
103100
77775
PR4405-5
442-5A
PR4410-5
442-5
PR445-5A
445-5A
PR445-5
445-5
440-5A
PR440-5
440-5
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
182
242
6416
6416
222-1A
222-1
PG/IPC
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
Watts
154.00
400
154.00
408
154.00
604
154.00
610
154.00
800
154.00
913
150.00 Ohms
150.00
400
150.00
800
150.00
1200
150.00
1600
150.00
2000
150.00
2400
150.00
2800
150.00
3200
150.00
3600
150.00
4000
150.00
5200
150.00
5600
128.00 Ohms
128.00
400
128.00
800
128.00
874
128.00
1162
128.00
1200
128.00
1600
128.00
1951
128.00
2400
128.00
2906
128.00
2912
128.00
3600
128.00
4395
125.00 Ohms
125.00
400
125.00
800
125.00
800
125.00
1200
125.00
1200
125.00
1386
125.00
1600
125.00
1850
125.00
2000
125.00
2800
125.00
3095
125.00
3600
125.00
4000
125.00
4000
125.00
4620
125.00
4625
125.00
5600
125.00
6994
125.00
7200
125.00
7600
120.00 Ohms
120.00
260
117.00 Ohms
117.00
150
117.00
250
117.00
300
Watt Seconds
7800
6416
16431
16431
12300
16431
Catalog
PR2205-1
225-1A
225-1
220-1A
PR225-1
220-1
Manufacturer
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
7700
12100
30000
54200
53500
82500
132000
136500
196200
192400
333400
329100
PF150R400W
PF150R800W
PF150R1K20
PF150R1K60
PF150R2K00
PF150R2K40
PF150R2K80
PF150R3K20
PF150R3K60
PF150R4K00
PF150R5K20
PF150R5K60
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
6500
18500
22065
32863
25500
45500
55397
114800
86382
82626
164100
138024
PR4405-6
PR4410-6
442-6A
442-6
PR442-6
PR445-6A
445-6A
PR445-6
445-6
440-6A
PR440-6
440-6
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
6500
18000
18300
24900
25200
32863
44200
51954
68700
112100
130903
161600
267000
277800
208131
208131
282800
212513
341300
344600
PF125R400W
PR5505-7
PF125R800W
PR5510-7
PF125R1K20
552-7A
PF125R1K60
552-7
PF125R2K00
PR555-7A
555-7A
PF125R3K60
PR555-7
PF125R4K00
550-7A
555-7
PR550-7
550-7
PF125R7K20
PF125R7K60
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
52000
AKR2120P1K2
Rockwell
1200
6000
6000
PR117R150W
PR117R250W
PRT117R300W
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
37
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
Watts
117.00
300
117.00
400
117.00
600
117.00
600
117.00
800
117.00
900
117.00
900
117.00
1200
117.00
1200
117.00
1500
117.00
1500
117.00
1600
117.00
1800
117.00
2100
117.00
2100
117.00
2250
117.00
2700
117.00
2700
117.00
3000
117.00
3000
110.00 Ohms
110.00
255
110.00
338
110.00
400
110.00
570
110.00
800
110.00
845
110.00
850
110.00
1200
110.00
1278
100.00 Ohms
100.00
400
100.00
800
100.00
1200
100.00
1600
100.00
2000
100.00
2400
100.00
2800
100.00
3600
100.00
4000
100.00
4800
100.00
5200
100.00
5600
100.00
6800
100.00
8000
100.00
9200
97.00 Ohms
97.00
150
97.00
250
97.00
300
97.00
300
97.00
400
97.00
600
97.00
600
97.00
800
97.00
900
97.00
900
97.00
1200
97.00
1200
38
Watt Seconds
7950
6000
10100
17000
17000
10600
23400
12500
41700
15800
66700
66700
66700
18600
150000
105000
14300
150000
20800
250000
Catalog
T117R300W
PR117R400W
T117R600W
PRT117R600W
PR117R800W
T117R900W
PRT117R900W
T117R1K2
PR117R1K20
T117R1K5
PRT117R1K5
PR117R1K60
PR117R1K80
T117R2K1
PRT117R2K1
PR117R2K25
T117R2K7
PRT117R2K7
T117R3K0
PRT117R3K0
Manufacturer
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
7511
7511
5600
18779
15900
18779
18779
39100
46947
222-2A
222-2
PR2205-2
225-2A
PR225-2
225-2
220-2A
PR220-2
220-2
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
5200
20000
35300
55000
89800
130800
125700
211600
205200
285500
275000
273100
450100
692400
676300
PF100R400W
PF100R800W
PF100R1K20
PF100R1K60
PF100R2K00
PF100R2K40
PF100R2K80
PF100R3K60
PF100R4K00
PF100R4K80
PF100R5K20
PF100R5K60
PF100R6K80
PF100R8K00
PF100R9K20
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
2200
5000
5000
10300
5000
13400
19400
19400
13800
34600
16500
34600
PR97R150W
PR97R250W
PRT97R300W
T97R300W
PR97R400W
T97R600W
PRT97R600W
PR97R800W
T97R900W
PRT97R900W
T97R1K2
PR97R1K20
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
97.00
91.00 Ohms
91.00
85.00 Ohms
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
85.00
81.00 Ohms
81.00
81.00
81.00
81.00
81.00
Watts
1200
1500
1500
1600
2100
2100
2250
2700
2700
2700
3000
3000
3600
3600
3600
4200
4200
Watt Seconds
55300
20800
87100
55300
15400
124400
87100
19100
124400
207300
16800
199000
22400
207200
278000
19100
266500
Catalog
PRT97R1K2
T97R1K5
PRT97R1K5
PR97R1K60
T97R2K1
PRT97R2K1
PR97R2K25
T97R2K7
PR97R2K70
PRT97R2K7
T97R3K0
PRT97R3K0
T97R3K6
PR97R3K60
PRT97R3K6
T97R4K2
PRT97R4K2
Manufacturer
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
86
17000
AKR2091P500
Rockwell
326
400
400
438
730
800
800
1089
1094
1200
1200
1600
1600
1654
2000
2056
2400
2720
2800
3600
3600
4592
5200
5600
5600
6800
6801
6854
7200
8800
10000
10285
11200
9076
6800
6900
9076
23004
16900
17200
36384
36384
46200
48400
75400
76200
57901
109000
57588
108900
92016
179500
173600
174300
233795
379200
381400
383300
588500
231135
231135
578500
953500
934100
361490
923100
222-3A
PR2205-3
PF85R400W
222-3
225-3A
PR225-3A
PF85R800W
220-3A
225-3
PF85R1K20
PR225-3
PF85R1K60
PR220-3
220-3
PF85R2K00
552-8A
PR552-8
552-8
PF85R2K80
PF85R3K60
PR555-8A
555-8A
PF85R5K20
PR555-8
PF85R5K60
PF85R6K80
555-8
550-8A
PF85R7K20
PR550-8
PF85R10K0
550-8
PF85R11K2
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
400
800
1200
1389
1600
6400
28800
46100
34975
72600
PR4405-7A
PR4405-7
PR4410-7
442-7A
PR442-7
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
39
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
81.00
81.00
81.00
81.00
81.00
81.00
81.00
81.00
81.00
80.00 Ohms
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
77.00 Ohms
77.00
77.00
40
Watts
1837
2800
3102
3600
4000
4592
4629
5600
6944
Watt Seconds
55084
173000
55319
183200
183200
224640
221432
132100
221276
Catalog
442-7
PR445-7A
445-7A
PR445-7
PR440-7A
445-7
440-7A
PR440-7
440-7
Manufacturer
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
250
300
300
400
600
600
800
800
900
900
1200
1200
1200
1500
1500
1600
1800
2000
2100
2100
2250
2700
2700
2700
3000
3000
3150
3600
3600
3600
4000
4050
4200
4200
4500
4500
4950
5700
5700
5850
7600
8000
9000
9000
9300
9300
6500
6500
8530
6500
10900
16000
16000
28500
18500
45600
13700
44600
71800
17500
102600
71800
71800
102600
19100
171000
102600
24600
102600
229300
22100
229300
170900
18500
164100
219800
229300
229100
25100
359000
23300
354400
219700
29400
897500
358800
545700
897500
209000
1435900
230000
1435900
PR80R250W
PRT80R300W
T80R300W
PF80R400W
T80R600W
PRT80R600W
PF80R800W
PR80R800W
T80R900W
PRT80R900W
T80R1K2
PF80R1K20
PRT80R1K2
T80R1K5
PRT80R1K5
PR80R1K60
PR80R1K80
PF80R2K00
T80R2K1
PRT80R2K1
PR80R2K25
T80R2K7
PR80R2K70
PRT80R2K7
T80R3K0
PRT80R3K0
PR80R3K15
T80R3K6
PR80R3K60
PRT80R3K6
PF80R4K00
PR80R4K05
T80R4K2
PRT80R4K2
T80R4K5
PRT80R4K5
PR80R4K95
T80R5K7
PRT80R5K7
PR80R5K85
PF80R7K60
PF80R8K00
T80R9K0
PRT80R9K0
T80R9K3
PRT80R9K3
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
250
300
6200
6200
PR77R250W
PRT77R300W
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
77.00
70.00 Ohms
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
70.00
65.00 Ohms
65.00
65.00
Watts
300
400
600
600
800
900
900
1200
1200
1200
1500
1500
1600
1800
2100
2100
2250
2700
2700
3000
3000
3150
3600
3600
3600
4050
4200
4200
4500
4500
5700
5700
9000
9000
9300
9300
Watt Seconds
8210
6200
10600
15400
27500
17900
43900
20800
43900
69200
16400
98800
69100
69100
19100
164600
98800
23800
220700
21300
211600
158000
28100
157900
211600
220600
24200
341100
22400
533100
28700
863800
209000
1382100
230000
1382100
Catalog
T77R300W
PR77R400W
T77R600W
PRT77R600W
PR77R800W
T77R900W
PRT77R900W
T77R1K2
PR77R1K20
PRT77R1K2
T77R1K5
PRT77R1K5
PR77R1K60
PR77R1K80
T77R2K1
PRT77R2K1
PR77R2K25
T77R2K7
PRT77R2K7
T77R3K0
PRT77R3K0
PR77R3K15
T77R3K6
PR77R3K60
PRT77R3K6
PR77R4K05
T77R4K2
PRT77R4K2
T77R4K5
PRT77R4K5
T77R5K7
PRT77R5K7
T77R9K0
PRT77R9K0
T77R9K3
PRT77R9K3
Manufacturer
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
400
800
800
1200
1200
2000
2400
2527
2800
3303
4800
4800
5643
7200
8258
8424
9600
10400
12489
5700
24900
25000
39800
62000
89700
153900
76680
143500
144048
114200
308300
189665
785200
297173
295765
1249300
251200
482144
PF70R400W
PR5505-9A
PF70R800W
PR5505-9
PF70R1K20
PR5510-9
PF70R2K40
552-9A
PR552-9
552-9
PR555-9A
PF70R4K80
555-9A
PR555-9
555-9
550-9A
PF70R9K60
PR550-9
550-9
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
400
800
9500
23600
PF65R400W
PF65R800W
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
41
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
65.00
65.00
65.00
65.00
65.00
65.00
65.00
65.00
60.00 Ohms
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
60.00
59.00 Ohms
59.00
59.00
59.00
59.00
59.00
59.00
59.00
59.00
59.00
59.00
59.00
42
Watts
1200
2000
2400
3600
4000
7200
7600
16640
Watt Seconds
59300
138900
141100
178100
291700
712100
709900
690800
Catalog
PF65R1K20
PF65R2K00
PF65R2K40
PF65R3K60
PF65R4K00
PF65R7K20
PF65R7K60
PF65R16K6
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
150
250
300
300
400
520
600
600
800
800
900
900
1200
1200
1200
1500
1500
2000
2250
2700
2700
2700
3600
3600
3600
4000
4500
4500
4500
4950
5850
6900
6900
7650
8000
11000
11000
15896
3400
8700
8700
10300
8700
104000
13000
21400
21400
34200
13700
53900
16400
53900
77000
20800
128300
128300
128300
18500
123100
164900
22000
164900
415400
269300
28000
269300
673100
265600
409800
164000
1077000
657600
659400
448000
2051300
690800
PR60R150W
PR60R250W
PRT60R300W
T60R300W
PF60R400W
2-AKR2120P1K2
T60R600W
PRT60R600W
PF60R800W
PR60R800W
T60R900W
PRT60R900W
T60R1K2
PR60R1K20
PRT60R1K2
T60R1K5
PRT60R1K5
PF60R2K00
PR60R2K25
T60R2K7
PR60R2K70
PRT60R2K7
T60R3K6
PR60R3K60
PRT60R3K6
PF60R4K00
T60R4K5
PR60R4K50
PRT60R4K5
PR60R4K95
PR60R5K85
T60R6K9
PRT60R6K9
PR60R7K65
PF60R8K00
T60R11K0
PRT60R11K0
PF60R15K8
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
Rockwell
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
400
473
631
800
1056
1200
1576
1577
1600
2000
2384
8500
10094
25038
33600
39201
52900
64161
64161
75600
126000
99762
PR2205-4
222-4A
222-4
PR222-4
225-4A
PR225-4A
225-4
220-4A
PR225-4
PR220-4
220-4
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
56.00 Ohms
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
56.00
55.00 Ohms
55.00
55.00
52.00 Ohms
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
48.00 Ohms
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
Watts
Watt Seconds
Catalog
Manufacturer
800
1200
1600
2010
2400
2657
3600
4490
5600
6642
6702
8000
10045
31900
50200
71700
61344
114800
154455
251200
245062
628200
245375
245375
201000
388094
PR4405-8
PR4410-8A
PR4410-8
442-8A
PR442-8
442-8
PR445-8A
445-8A
PR445-8
445-8
440-8A
PR440-8
440-8
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
400
800
8000
30800
PF55R400W
PF55R800W
PowerOhm
PowerOhm
400
800
1200
1600
2400
2800
3200
4800
5600
6000
9600
13312
18625
10400
28600
65400
111200
149600
142400
233400
352900
569300
577000
598400
621800
583500
PF52R400W
PF52R800W
PF52R1K20
PF52R1K60
PF52R2K40
PF52R2K80
PF52R3K20
PF52R4K80
PF52R5K60
PF52R6K00
PF52R9K60
PF52R13K3
PF52R18K6
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
150
250
300
300
400
600
600
800
800
900
900
1200
1200
1200
1500
1500
1600
2000
2700
2700
2700
3000
3000
3150
3600
3600
3600
2700
9600
9600
13100
9600
16500
27400
26400
27400
17500
61600
20800
61600
102600
16600
98500
102600
98500
23300
137600
212600
21100
332400
131800
28000
86200
538500
PR48R150W
PR48R250W
PRT48R300W
T48R300W
PF48R400W
T48R600W
PRT48R600W
PF48R800W
PR48R800W
T48R900W
PRT48R900W
T48R1K2
PF48R1K20
PRT48R1K2
T48R1K5
PRT48R1K5
PR48R1K60
PF48R2K00
T48R2K7
PR48R2K70
PRT48R2K7
T48R3K0
PRT48R3K0
PR48R3K15
T48R3K6
PF48R3K60
PRT48R3K6
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
43
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
47.00 Ohms
47.00
45.00 Ohms
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
44
Watts
4200
4200
4950
5670
5670
5850
6600
6600
7650
9450
12600
12600
19100
19100
20400
20400
Watt Seconds
23800
527500
328000
131000
861600
527200
131000
861600
860500
859400
359000
460500
656000
817300
716000
817300
Catalog
T48R4K2
PRT48R4K2
PR48R4K95
T48R5K67
PRT48R5K67
PR48R5K85
T48R6K6
PRT48R6K6
PR48R7K65
PR48R9K45
T48R12K6
PRT48R12K6
T48R19K1
PRT48R19K1
T48R20K4
PRT48R20K4
Manufacturer
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
166
33000
AKR2047P500
Rockwell
300
300
400
400
600
600
617
800
827
1200
1200
1200
1200
1378
1500
1500
1600
2000
2056
2066
2100
2100
2250
2700
2700
2800
3000
3000
3125
3200
3600
3600
3600
3883
4050
4400
5138
5850
6000
6000
9000
12300
8900
9000
15800
25700
30828
40300
30828
19100
57600
57700
96200
49529
24900
92400
96100
101800
124800
124800
28100
123700
92400
22000
311600
201900
19800
307700
197177
73400
26600
199200
494600
120810
311600
504800
308128
494300
125000
807700
PRT45R300W
T45R300W
PR2205-5
PR45R400W
T45R600W
PRT45R600W
222-5A
PR2210-5
222-5
T45R1K2
PR225-5A
PR45R1K20
PRT45R1K2
225-5A
T45R1K5
PRT45R1K5
PR5505-10
PR225-5
220-5A
225-5
T45R2K1
PRT45R2K1
PR45R2K25
T45R2K7
PRT45R2K7
PR220-5
T45R3K0
PRT45R3K0
220-5
PR552-10A
T45R3K6
PR45R3K60
PRT45R3K6
552-10A
PR45R4K05
PR552-10
552-10
PR45R5K85
T45R6K0
PRT45R6K0
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
45.00
44.00 Ohms
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
44.00
40.00 Ohms
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
Watts
6300
6750
7200
8672
12600
12600
12846
12943
14580
18000
19100
19100
19427
Watt Seconds
493900
494600
161500
370410
359000
403000
409420
409420
494900
638600
656000
794400
563362
Catalog
PR45R6K30
PR45R6K75
PR555-10A
555-10A
T45R12K6
PRT45R12K6
555-10
550-10A
PR555-10
PR550-10
T45R19K1
PRT45R19K1
550-10
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
400
800
800
1200
1200
2000
2000
2561
2800
2800
3381
3600
4000
4800
5600
5720
7200
7200
7600
8454
8537
11264
12784
14256
15000
23276
8800
39400
39500
56400
57700
99500
126100
121670
197400
197900
190604
79000
300900
193400
477000
184031
157900
793400
775400
305624
302807
483600
369388
494900
495000
1263600
PF44R400W
PR4405-9A
PF44R800W
PR4405-9
PF44R1K20
PR4410-9
PF44R2K00
442-9A
PR442-9
PF44R2K80
442-9
PF44R3K60
PF44R4K00
PR445-9A
PF44R5K60
445-9A
PR445-9
PF44R7K20
PF44R7K60
445-9
440-9A
PF44R11K2
440-9
PR440-9
PF44R15K0
PF44R23K2
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
300
300
400
800
900
900
1200
1200
1200
1200
1600
1800
1800
1800
2000
3150
3200
4000
8000
10900
8000
35900
14300
51300
17300
51300
82100
83400
82100
18500
82100
109900
114700
177100
277000
105000
PRT40R300W
T40R300W
PF40R400W
PF40R800W
T40R900W
PRT40R900W
T40R1K2
PR40R1K20
PRT40R1K2
PF40R1K20
PR40R1K60
T40R1K8
PR40R1K80
PRT40R1K8
PF40R2K00
PR40R3K15
PF40R3K20
T40R4K0
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
45
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
36.00 Ohms
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
35.00 Ohms
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.00
34.00 Ohms
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
46
Watts
4000
4000
4050
5850
6000
7200
10000
10000
10240
10240
11000
11000
11429
16000
16000
16000
17000
17000
19000
19000
22000
22000
22858
Watt Seconds
439600
448800
273300
438600
727000
718000
309000
403000
414500
445700
333000
403000
440000
521000
638700
649900
574000
649900
568000
649900
1099600
1202000
1130600
Catalog
PRT40R4K0
PF40R4K00
PR40R4K05
PR40R5K85
PF40R6K00
PR40R7K20
T40R10K0
PRT40R10K0
PF40R10K2
PR40R10K2
T40R11K0
PRT40R11K0
PF40R11K4
T40R16K0
PF40R16K0
PRT40R16K0
T40R17K0
PRT40R17K0
T40R19K0
PRT40R19K0
PRT40R22K0
T40R22K0
PF40R22K8
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
400
800
1200
1600
2000
2400
4000
4400
9216
11298
16517
16863
19044
24978
12900
32400
77000
103200
99000
79200
395700
399000
414500
316618
449907
449907
1064100
1321116
PF36R400W
PF36R800W
PF36R1K20
PF36R1K60
PF36R2K00
PF36R2K40
PF36R4K00
PF36R4K40
PF36R9K21
555-11A
555-11
550-11A
PF36R19K0
550-11
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
1200
2000
2800
3600
4000
5058
5600
6423
11340
18515
23660
74700
96100
242300
392600
153800
157272
125600
249757
384900
940200
1274300
PR5505-11A
PR5505-11
PR5510-11A
PR5510-11
PR552-11A
552-11A
PR552-11
552-11
PR555-11A
PR555-11
PR550-11
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
300
300
900
900
1200
1600
1800
1800
12200
14700
19100
72700
72700
97500
25100
152600
PRT34R300W
T34R300W
T34R900W
PRT34R900W
PR34R1K20
PR34R1K60
T34R1K8
PRT34R1K8
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
32.00 Ohms
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
Watts
2250
2400
2400
3600
3600
4000
4000
4500
8000
8000
8704
9000
9000
13000
13000
13600
15000
15000
17000
17000
18000
18000
19000
19000
26000
26000
300
300
400
400
600
600
800
875
900
900
1162
1200
1200
1500
1500
1600
1600
1600
1955
2000
2100
2100
2250
2400
2400
2700
2700
2800
2906
2918
3150
3600
Watt Seconds
93500
30100
232500
93000
373700
98600
610300
373700
262000
345400
378900
285000
345400
456000
577700
505000
456000
577700
914500
990000
914500
1017000
914500
1048000
1591000
2360900
11400
13800
11300
11400
17500
41100
41100
35054
19100
65700
55162
65600
70600
28100
88000
72300
91700
91800
88573
143600
20200
218900
143600
113100
221500
25200
351700
220200
82626
82626
218800
102600
Catalog
PR34R2K25
T34R2K4
PRT34R2K4
T34R3K6
PRT34R3K6
T34R4K0
PRT34R4K0
PR34R4K50
T34R8K0
PRT34R8K0
PR34R8K70
T34R9K0
PRT34R9K0
T34R13K0
PRT34R13K0
PR34R13K6
T34R15K0
PRT34R15K0
PRT34R17K0
T34R17K0
PRT34R18K0
T34R18K0
PRT34R19K0
T34R19K0
T34R26K0
PRT34R26K0
Manufacturer
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PRT32R300W
T32R300W
PR2205-6
PF32R400W
T32R600W
PRT32R600W
PF32R800W
222-6A
T32R900W
PRT32R900W
222-6
PR32R1K20
PF32R1K20
T32R1K5
PRT32R1K5
PR225-6A
PR32R1K60
PF32R1K60
225-6A
PF32R2K00
T32R2K1
PRT32R2K1
PR32R2K25
PF32R2K40
PR225-6
T32R2K7
PRT32R2K7
PF32R2K80
225-6
220-6A
PR32R3K15
PF32R3K60
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
47
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
32.00
30.00 Ohms
30.00
29.00 Ohms
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
28.00 Ohms
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
48
Watts
4000
4000
4000
4395
4500
4500
4800
4950
5200
5850
8192
8420
8420
9144
10368
12700
12700
12800
13545
17100
17100
18000
18000
18286
21632
26000
26000
27090
28000
28000
Watt Seconds
83300
140600
574400
222215
105000
574400
581600
350600
583400
574000
356600
246000
287800
345400
385000
410000
505500
475300
511000
914500
931000
914500
1017000
931100
1203600
1591000
2270100
2541900
2270100
2304000
Catalog
T32R4K0
PR220-6
PRT32R4K0
220-6
T32R4K5
PRT32R4K5
PF32R4K80
PR32R4K95
PF32R5K20
PR32R5K85
PR32R8K19
T32R8K42
PRT32R8K42
PF32R9K14
PF32R10K3
T32R12K7
PRT32R12K7
PR32R12K8
PF32R13K5
PRT32R17K1
T32R17K1
PRT32R18K0
T32R18K0
PF32R18K2
PF32R21K6
T32R26K0
PRT32R26K0
PF32R27K0
PRT32R28K0
T32R28K0
Manufacturer
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
260
52000
AKR2030P1K2
Rockwell
1200
1600
2000
2800
3200
3800
4800
5130
8487
9396
11600
12667
12826
19396
19604
59400
79600
47300
325300
127400
127069
104100
199993
253840
274900
447000
359925
359925
615920
1061900
PR4405-10A
PR4405-10
PR4410-10A
PR4410-10
PR442-10A
442-10A
PR442-10
442-10
445-10A
PR445-10A
PR445-10
440-10A
445-10
440-10
PR440-10
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
400
800
1200
1600
1600
2000
2400
2800
3200
4000
15400
35900
57300
76900
77000
124100
79700
314200
123000
502600
PF28R400W
PF28R800W
PF28R1K20
PR5505-12A
PF28R1K60
PF28R2K00
PR5505-12
PF28R2K80
PR5510-12A
PF28R4K00
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
27.00 Ohms
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
25.00 Ohms
25.00
25.00
25.00
25.00
25.00
Watts
4400
4800
5600
6096
7501
8258
9072
9072
11200
13615
14812
15001
18928
18928
18928
20321
20646
23548
28672
30001
30492
36288
Watt Seconds
493600
100500
320400
299521
345400
237463
329900
330000
447100
359925
752100
846300
1061900
1132700
1132800
1100930
1033301
2224200
3042500
3042600
2138364
4610000
Catalog
PF28R4K40
PR5510-12
PF28R5K60
552-12A
PF28R7K50
552-12
PR552-12
PF28R9K07
PF28R11K2
555-12A
PR555-12A
PF28R15K0
PR550-12A
PR555-12
PF28R18K9
550-12A
555-12
PF28R23K5
PR550-12
PF28R30K0
550-12
PF28R36K2
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
300
300
600
600
800
900
900
1200
1200
1200
1500
1500
1600
2100
2100
3300
3300
3600
6912
8420
8420
10800
11500
11500
15000
15000
21600
21600
27400
27400
15400
18500
15400
34700
34700
24900
55400
18800
55400
74200
23700
119600
74200
27300
302900
73900
484700
296300
300700
346700
358000
401100
391000
433300
731600
931000
1346000
1906900
2075000
2833000
PRT27R300W
T27R300W
T27R600W
PRT27R600W
PR27R800W
T27R900W
PRT27R900W
T27R1K2
PR27R1K20
PRT27R1K2
T27R1K5
PRT27R1K5
PR27R1K60
T27R2K1
PRT27R2K1
T27R3K3
PRT27R3K3
PR27R3K60
PR27R6K91
PRT27R8K42
T27R8K42
PR27R10K8
T27R11K5
PRT27R11K5
PRT27R15K0
T27R15K0
T27R21K6
PRT27R21K6
T27R27K4
PRT27R27K4
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
250
300
300
400
400
14300
14300
17200
13800
14300
PR25R250W
PRT25R300W
T25R300W
PF25R400W
PR25R400W
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
49
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
25.00
24.00 Ohms
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
24.00
23.00 Ohms
23.00
23.00
23.00
23.00
50
Watts
600
600
800
800
900
900
1200
1200
1200
1200
1500
1500
1600
1800
2000
2400
2700
2800
3150
3200
3300
3300
3900
3900
6400
6876
8420
8420
10000
10158
13751
16900
21025
25600
32400
40632
55001
Watt Seconds
14300
53500
53500
55600
23000
71700
27700
71400
71700
112200
22000
173100
55000
112200
173100
130800
280000
277000
274700
272600
73900
448800
190000
448800
278600
276400
288900
328000
371400
383200
752200
962500
2012300
2789000
4149000
1445600
2926300
Catalog
T25R600W
PRT25R600W
PR25R800W
PF25R800W
T25R900W
PRT25R900W
T25R1K2
PF25R1K20
PR25R1K20
PRT25R1K2
T25R1K5
PRT25R1K5
PF25R1K60
PR25R1K80
PF25R2K00
PF25R2K40
PR25R2K70
PF25R2K80
PR25R3K15
PF25R3K20
T25R3K3
PRT25R3K3
T25R3K9
PRT25R3K9
PR25R6K40
PF25R6K87
PRT25R8K42
T25R8K42
PR25R10K0
PF25R10K1
PF25R13K7
PR25R16K9
PF25R21K0
PF25R25K6
PF25R32K4
PF25R40K6
PF25R55K0
Manufacturer
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
2000
2800
3600
5600
7340
7776
9600
9635
16224
16393
20184
24086
24468
24576
31104
36710
166100
105400
86100
430700
211079
274900
383100
299938
900800
533797
1906300
1173670
1871068
2662200
3995200
844315
PR5505-13A
PR5505-13
PR5510-13A
PR5510-13
552-13A
PR552-13A
PR552-13
552-13
PR555-13A
555-13A
PR555-13
555-13
550-13A
PR550-13A
PR550-13
550-13
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
250
300
300
400
20700
13200
15800
20700
PR23R250W
PRT23R300W
T23R300W
PR23R400W
PowerOhm
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
23.00
22.00 Ohms
22.00
22.00
22.00
22.00
22.00
22.00
21.00 Ohms
21.00
21.00
21.00
21.00
21.00
21.00
21.00
21.00
21.00
21.00
21.00
21.00
Watts
600
600
800
800
900
900
1200
1200
1200
1500
1500
1600
2000
2000
2100
2100
2250
2400
3150
3600
3600
4000
4982
6310
6310
6469
7452
7452
7490
7490
10200
10200
11125
12167
15548
15548
16172
23552
29808
Watt Seconds
20800
49200
49200
51300
21300
63200
63100
63200
63500
20200
157300
82600
65500
157300
23100
252800
157300
258000
252400
82500
185800
82500
254295
179000
230300
399830
275000
281600
288900
328000
310000
361100
492736
658100
900800
900900
825698
2535400
3841600
Catalog
T23R600W
PRT23R600W
PR23R800W
PF23R800W
T23R900W
PRT23R900W
PR4405-11A
PR23R1K20
PF23R1K20
T23R1K5
PRT23R1K5
PF23R1K60
PR4405-11
PF23R2K00
T23R2K1
PRT23R2K1
PR23R2K25
PR4410-11A
PR23R3K15
PR4410-11
PF23R3K60
PR442-11A
442-11A
T23R6K31
PRT23R6K31
442-11
PF23R7K45
PR442-11
PRT23R7K49
T23R7K49
T23R10K2
PRT23R10K2
445-11A
PR445-11A
PR445-11
PF23R15K5
445-11
PR440-11
PF23R29K8
Manufacturer
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
1200
1600
2700
5632
11638
14872
28200
45200
63000
245000
626900
847000
PR22R1K20
PR22R1K60
PR22R2K70
PR22R5K63
PR22R11K6
PR22R14K8
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
400
800
1200
1600
2000
2400
3200
4000
5626
7426
8400
11251
18900
47100
57700
75400
143600
107700
373400
240800
236100
234800
319400
564200
PF21R400W
PF21R800W
PF21R1K20
PF21R1K60
PF21R2K00
PF21R2K40
PF21R3K20
PF21R4K00
PF21R5K62
PF21R7K42
PF21R8K40
PF21R11K2
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
51
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
21.00
21.00
21.00
21.00
21.00
20.00 Ohms
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
20.00
19.00 Ohms
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
52
Watts
17661
22501
33600
45001
70644
Watt Seconds
1694600
2282000
5992900
2394200
6778300
Catalog
PF21R17K6
PF21R22K5
PF21R33K6
PF21R45K0
PF21R70K6
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
300
300
400
600
600
800
900
900
1200
1372
1500
1500
1600
1600
1860
2250
2400
3063
4000
4572
4650
5120
5940
5940
6480
7031
8000
8920
8920
10700
10700
13520
15200
15200
16605
20600
20600
24910
28400
28400
34600
34600
13700
18000
17900
17300
41100
41000
18500
55000
54900
87086
28000
224400
138400
138500
55084
224400
87900
138493
358900
222215
221432
222800
231100
260000
219900
169227
297100
267000
361100
548700
582000
770000
924000
1452900
825698
1602000
2124800
1781970
1066000
4815100
1148000
4815100
T20R300W
PRT20R300W
PR2205-7A
T20R600W
PRT20R600W
PR2205-7
T20R900W
PRT20R900W
PR20R1K20
222-7A
T20R1K5
PRT20R1K5
PR222-7
PR20R1K60
222-7
PR20R2K25
PR225-7A
225-7A
PR225-7
220-7A
225-7
PR20R5K12
PRT20R5K94
T20R5K94
PR220-7
220-7
PR20R8K00
T20R8K92
PRT20R8K92
PRT20R10K7
T20R10K7
PR20R13K5
T20R15K2
PRT20R15K2
440-11A
T20R20K6
PRT20R20K6
440-11
T20R28K4
PRT20R28K4
T20R34K6
PRT20R34K6
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
400
800
1200
1200
1600
2000
2250
2400
2700
2800
17100
39000
84900
85300
68300
213200
208800
83500
208400
339300
PF19R400W
PF19R800W
PF19R1K20
PR19R1K20
PF19R1K60
PF19R2K00
PR19R2K25
PR5505-14A
PR19R2K70
PF19R2K80
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
19.00
18.00 Ohms
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
18.00
Watts
3200
3200
4864
4864
6716
6859
7600
8213
9540
10051
10051
12170
12844
12844
13613
16425
19456
19456
19456
21305
30400
30400
31798
31965
40204
47500
47709
63916
77824
1600
1600
1800
2250
2400
2700
3150
3200
3600
4608
4608
5832
6184
6498
7200
8266
9522
9522
12168
13810
15138
15138
18432
18432
20612
20664
23328
28800
28800
Watt Seconds
68200
344700
207200
207300
220000
213300
272500
272600
410613
564100
564200
410613
731500
800700
700700
1497400
2028300
2131600
2155200
1514674
5393500
5393600
3029900
2913365
2128200
10656500
5953399
6142800
8113500
23100
51200
123100
197800
79100
197800
322900
323000
323100
195800
200600
219900
152850
202100
267400
234734
512900
564100
693000
660558
1480900
1497300
2019400
2028300
1336477
1336477
3006500
4994000
5136800
Catalog
PR5505-14
PF19R3K20
PR5510-14A
PF19R4K86
PF19R6K71
PR19R6K85
PR5510-14
PF19R8K21
552-14A
PR552-14A
PF19R10K0
552-14
PR19R12K8
PR552-14
PF19R13K6
PF19R16K4
PR555-14A
PR19R19K4
PF19R19K4
555-14A
PR555-14
PF19R30K4
550-14A
555-14
PF19R40K2
PR550-14
550-14
PF19R63K9
PF19R77K8
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PR18R1K60
PR4405-12A
PR18R1K80
PR18R2K25
PR4405-12
PR18R2K70
PR18R3K15
PR4410-12A
PR18R3K60
PR4410-12
PR18R4K60
PR442-12A
442-12A
PR18R6K49
PR18R7K20
442-12
PR18R9K52
PR442-12
PR18R12K1
445-12A
PR18R15K1
PR445-12A
PR18R18K4
PR445-12
440-12A
445-12
PR18R23K3
PR440-12
PR18R28K8
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
53
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
18.00
15.40 Ohms
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.40
15.00 Ohms
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
15.00
54
Watts
30910
Watt Seconds
899814
Catalog
440-12
Manufacturer
PG/IPC
800
1200
1600
2250
2400
3600
5063
8146
10410
12951
19958
20251
41642
42400
106000
172800
276500
123100
275700
165000
438800
600600
1267000
2572200
2612300
2407200
PF15F4R800W
PF15F4R1K20
PR15F4R1K60
PR15F4R2K25
PF15F4R2K40
PR15F4R3K60
PF15F4R5K06
PR15F4R8K14
PF15F4R10K4
PR15F4R12K9
PR15F4R19K9
PF15F4R20K2
PF15F4R41K6
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
300
300
400
520
600
600
800
900
900
1500
1500
1600
2000
2800
3150
3840
4210
4210
4860
4860
6000
6160
6160
7132
7935
8570
8570
9919
10140
11400
11400
12112
12615
15360
15360
15927
18173
23772
23894
24000
24000
27060
35663
16400
19300
19300
104000
20800
41300
41300
22000
103900
38800
164900
164900
65900
269200
268900
177000
122400
143000
164900
168400
218000
232000
288900
179963
401300
457300
466000
328491
600500
734000
1027000
550465
1197800
1613000
1648000
1158280
1158280
719851
719851
3995200
4195000
719851
1313963
T15R300W
PRT15R300W
PR15R400W
2-AKR2030P1K2
T15R600W
PRT15R600W
PR15R800W
T15R900W
PRT15R900W
T15R1K5
PRT15R1K5
PR15R1K60
PR4405-13A
PR4405-13
PR15R3K15
PR4410-13A
PRT15R4K21
T15R4K21
PR5505-15
PR15R4K86
PR4410-13
T15R6K16
PRT15R6K16
442-13A
PR442-13A
PRT15R8K57
T15R8K57
442-13
PR442-13
T15R11K4
PRT15R11K4
552-15A
PR552-15A
PR552-15
PR445-13A
445-13A
552-15
440-13A
445-13
PR445-13
PR440-13A
555-15A
440-13
PG/IPC
PowerOhm
PowerOhm
Rockwell
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
15.00
15.00
15.00
15.00
15.00
14.00 Ohms
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
13.00 Ohms
13.00
13.00
13.00
13.00
13.00
13.00
13.00
13.00
13.00
13.00
12.00 Ohms
12.00
12.00
12.00
12.00
12.00
12.00
12.00
Watts
37500
40388
40587
60579
73500
Watt Seconds
7571700
1300276
1313963
7591398
17841500
Catalog
PR440-13
550-15A
555-15
550-15
PR550-15
Manufacturer
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
300
300
400
600
600
800
800
900
900
1200
1200
1200
1600
1800
1800
1800
2012
2400
2657
3150
4495
4536
4536
6160
6160
6642
6708
7406
9464
10045
11400
11400
12700
12700
15400
18000
18000
19400
38500
38400
38500
20700
95800
24500
39800
153900
61500
27800
153900
251300
61344
50200
154455
251300
117367
157200
164900
216700
232000
172138
172138
376000
600500
523728
734000
1027000
1027000
1038000
T14R300W
PRT14R300W
PR14R400W
T14R600W
PRT14R600W
PR2205-8
PR14R800W
T14R900W
PRT14R900W
T14R1K2
PR2210-8A
PRT14R1K2
PR2210-8
T14R1K8
PR14R1K80
PRT14R1K8
222-8A
PR222-8
222-8
PR14R3K15
225-8A
PR14R4K53
PR225-8A
PRT14R6K16
T14R6K16
225-8
220-8A
PR225-8
PR220-8
220-8
T14R11K4
PRT14R11K4
PRT14R12K7
T14R12K7
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
400
800
1200
1600
2250
2800
3328
5200
5457
11000
27800
58400
88900
111200
233400
238800
144900
193100
191600
1048200
PR13R400W
PF13R800W
PR13R1K20
PF13R1K60
PR13R2K25
PF13R2K80
PR13R3K32
PR13R5K20
PF13R5K45
PF13R11K0
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
400
800
1200
2250
2400
3072
3888
82100
131900
134700
215400
215300
133600
140800
PR12R400W
PR12R800W
PR12R1K20
PR12R2K25
PR4405-14A
PR12R3K07
PR5505-16A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
55
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
11.00 Ohms
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
10.40 Ohms
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
56
Watts
3888
4800
6348
6348
8112
9641
10092
10092
12288
12398
13780
15552
19200
20673
21531
24300
30000
30000
30776
32136
32297
43200
45934
46170
48204
58800
68911
86700
Watt Seconds
155500
191500
342000
376000
500400
440372
898400
1048100
1433800
890985
890985
1955200
3595700
599876
1924486
3941400
6169500
6450000
1040221
1040221
1040221
10984300
2387466
2247026
1314510
16476500
10015318
28607000
Catalog
PR4405-14
PR4410-14A
PR12R6K34
PR5505-16
PR4410-14
442-14A
PR442-14A
PR5510-16
PR552-16A
442-14
552-16A
PR442-14
PR552-16
552-16
445-14A
PR445-14A
PR445-14
PR555-16A
555-16A
440-14A
445-14
PR555-16
550-16A
555-16
440-14
PR440-14
550-16
PR550-16
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
800
1200
1600
2000
2400
2561
3381
3564
5720
5819
8454
8537
9251
12784
14256
17900
48300
39400
197400
197400
121123
100080
116600
237243
321000
407344
407344
898400
890985
1737900
PR2205-9A
PR2205-9
PR2210-9A
PR2210-9
PR222-9A
222-9A
222-9
PR222-9
225-9A
PR225-9A
225-9
220-9A
PR225-9
220-9
PR220-9
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
300
300
600
600
900
900
1500
1500
1800
2662
2970
2970
4160
5360
17300
21400
22900
46100
24500
114300
25400
186700
186700
115900
81600
95100
153300
274400
T10F4R300W
PRT10F4R300W
T10F4R600W
PRT10F4R600W
T10F4R900W
PRT10F4R900W
T10F4R1K5
PRT10F4R1K5
PR10F4R1K80
PR10F4R2K66
PRT10F4R2K97
T10F4R2K97
PR10F4R4K16
PRT10F4R5K36
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.40
10.10 Ohms
10.10
10.10
10.10
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
9.50 Ohms
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.50
9.20 Ohms
9.20
Watts
5360
6040
6040
8746
8890
8890
11000
11000
15500
15500
16640
18900
18900
26000
26000
26000
35600
35600
43900
43900
72300
72300
Watt Seconds
329000
274400
489000
855700
770300
801000
359000
1168200
1742000
2490600
2966900
1991000
3790000
2002000
5718700
5885300
1230000
10024700
1367000
14328100
4620000
18257600
Catalog
T10F4R5K36
PRT10F4R6K4
T10F4R6K4
PR10F4R8K74
PRT10F4R8K89
T10F4R8K89
T10F4R11K0
PRT10F4R11K0
T10F4R15K5
PRT10F4R15K5
PR10F4R16K6
T10F4R18K9
PRT10F4R18K9
T10F4R26K0
PR10F4R26K0
PRT10F4R26K0
T10F4R35K6
PRT10F4R35K6
T10F4R43K9
PRT10F4R43K9
T10F4R72K3
PRT10F4R72K3
Manufacturer
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
400
800
1200
4000
6760
8410
12960
16000
17713
25000
26569
36000
39559
49000
51840
59043
59339
20600
35900
112100
163500
400300
898400
1737900
2824200
479901
5328200
903350
8787400
1956117
13730400
6453800
1950414
1950414
PF10F1R400W
PF10F1R800W
PF10F1R1K20
PR5505-17A
PR5505-17
PR5510-17A
PR5510-17
PR552-17A
552-17A
PR552-17
552-17
PR555-17A
555-17A
PR550-17A
PR555-17
550-17A
555-17
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
3800
5025
6422
9728
11926
12312
15200
17890
23750
26636
34200
38912
39755
39955
49248
59635
135500
266000
400300
1075300
316618
1520700
2596900
479901
5047800
3000513
8787400
4056700
2851152
1079776
6146500
1820386
PR4405-15A
PR4405-15
PR4410-15A
PR4410-15
442-15A
PR442-15A
PR442-15
442-15
PR445-15A
445-15A
PR445-15
PR440-15A
440-15A
445-15
PR440-15
440-15
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
400
18900
PF9F2R400W
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
57
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
9.20
8.00 Ohms
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
7.30 Ohms
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
7.30
58
Watts
800
1200
1600
2000
2355
2981
3751
4867
6601
7737
9421
11923
15001
19467
24876
30948
37683
47693
58880
69635
90001
132480
Watt Seconds
32400
102200
75500
161600
98000
116700
135600
282100
341800
748700
1075400
1520800
545200
1064100
1416000
2965500
4056800
6146600
10387700
6672400
9127700
23372300
Catalog
PF9F2R800W
PF9F2R1K20
PF9F2R1K60
PF9F2R2K00
PF9F2R2K35
PF9F2R2K98
PF9F2R3K75
PF9F2R4K86
PF9F2R6K60
PF9F2R7K73
PF9F2R9K42
PF9F2R11K9
PF9F2R15K0
PF9F2R19K4
PF9F2R24K8
PF9F2R30K9
PF9F2R37K6
PF9F2R47K6
PF9F2R58K8
PF9F2R69K6
PF9F2R90K0
PF9F2R132K2
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
4232
5408
8192
10368
14093
16200
16200
21143
23427
28800
31474
35138
39200
41472
46977
47219
52321
57800
64800
70477
78475
80000
240700
300200
896100
1303400
401656
2786200
2846600
693480
1211023
7322900
1564893
2494758
10984300
4917200
2966898
1560331
1559677
19071300
10510600
3325398
5345909
15704400
PR4405-16A
PR4405-16
PR4410-16A
PR4410-16
442-16A
PR442-16A
PR442-16
442-16
552-18A
PR445-16A
445-16A
552-18
PR552-18
PR445-16
440-16A
445-16
555-18A
PR555-18A
PR440-16
440-16
555-18
PR555-18
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
1200
1600
1868
2920
3826
3861
5095
6139
7475
8545
11680
12738
12754
26200
131000
77700
107400
164245
199500
267369
598900
896100
566990
2259300
359925
359925
PR2205-10A
PR2205-10
PR2210-10A
PR2210-10
222-10A
PR222-10A
222-10
PR222-10
PR225-10A
225-10A
PR225-10
225-10
220-10A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
7.30
7.30
7.30
7.00 Ohms
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
6.50 Ohms
6.50
6.50
6.50
6.50
6.50
6.50
6.50
6.40 Ohms
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.40
6.00 Ohms
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
5.70 Ohms
5.70
5.70
5.70
5.70
5.70
5.70
Watts
14782
18250
19264
Watt Seconds
2476600
3964700
656981
Catalog
PR220-10A
PR220-10
220-10
Manufacturer
PowerOhm
PowerOhm
PG/IPC
400
1200
1600
1792
2800
4732
7383
11251
14812
23548
36912
55001
81648
127575
157500
19300
123900
77000
77800
107500
269500
765100
436200
802700
2330100
4610000
5083700
10141900
21021300
34493700
PF7R400W
PF7R1K20
PF7R1K60
PR7R1K79
PF7R2K80
PR7R4K73
PF7R7K38
PF7R11K2
PF7R14K8
PF7R23K5
PF7R36K9
PF7R55K0
PF7R81K6
PF7R127K7
PF7R157K7
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
2106
2600
3438
4394
5466
6656
8424
92600
90400
188100
256400
599000
717000
1086300
PF6F5R2K10
PF6F5R2K60
PF6F5R3K43
PF6F5R4K39
PF6F5R5K46
PF6F5R6K65
PF6F5R8K42
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
4326
6553
8294
12960
16000
17529
23040
26292
33177
39148
58430
58718
64000
256300
716900
1086200
2167000
3568300
574859
5858300
719851
4302500
1231840
4818224
4929414
13460900
PR4405-17A
PR4405-17
PR4410-17A
PR4410-17
PR442-17A
442-17A
PR442-17
442-17
PR445-17A
445-17A
440-17A
445-17
PR445-17
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
7776
12150
15000
21600
28008
29400
38400
42015
60000
62551
1086200
1857400
3171800
5176500
1960167
8238200
6392400
1981674
12900000
2135190
PR5505-19A
PR5505-19
PR5510-19A
PR5510-19
552-19A
PR552-19A
PR552-19
552-19
PR555-19A
555-19A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
1600
1846
2280
3853
4793
4938
8200
61700
90300
212300
449200
260816
PR2205-11A
PR2205-11
PR2210-11A
PR2210-11
PR222-11A
222-11A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
59
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
5.70
5.70
5.70
5.70
5.70
5.70
5.70
5.70
5.70
5.40 Ohms
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.40
5.00 Ohms
5.00
5.00
5.00
5.00
5.00
5.00
5.00
5.00
60
Watts
5836
6525
11029
11542
16314
16461
20520
24694
27930
Watt Seconds
612000
421193
905640
1857400
880744
880744
5176500
1781970
8238200
Catalog
PR222-11
222-11
225-11A
PR225-11A
225-11
220-11A
PR225-11
220-11
PR220-11
Manufacturer
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
1200
1382
1670
1670
1749
1949
2680
2680
2856
3650
4541
5080
5080
5529
5780
5780
6998
7280
7280
8640
12000
12000
13500
19440
20300
20300
22000
22000
27993
34560
37700
37700
43740
48100
48100
51900
51900
54000
104000
104000
97000
59900
55700
81800
61700
61700
182900
185000
154800
207900
444300
385200
401000
603100
169000
500700
902500
328000
809200
1540500
699000
3328300
2973600
4904100
738000
5451100
717000
5451100
3607800
6164200
2310000
9294800
7276600
712100
1845000
712100
1953000
11877300
3444000
29551700
PR5F4R1K20
PR5F4R1K38
T5F4R1K67
PRT5F4R1K67
PR5F4R1K74
PR5F4R1K94
PRT5F4R2K68
T5F4R2K68
PR5F4R2K85
PR5F4R3K65
PR5F4R4K54
PRT5F4R5K8
T5F4R5K8
PR5F4R5K52
T5F4R5K78
PRT5F4R5K78
PR5F4R6K99
T5F4R7K28
PRT5F4R7K28
PR5F4R8K64
T5F4R12K0
PRT5F4R12K0
PR5F4R13K5
PR5F4R19K4
T5F4R20K3
PRT5F4R20K3
T5F4R22K0
PRT5F4R22K0
PR5F4R27K9
PR5F4R34K5
T5F4R37K7
PRT5F4R37K7
PR5F4R43K7
PRT5F4R48K1
T5F4R48K1
PRT5F4R51K9
T5F4R51K9
PR5F4R54K0
T5F4R104K0
PRT5F4R104K0
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
6480
8000
12500
18000
22848
24500
30978
32000
868900
1412100
2775300
4658800
1603773
6865200
1651395
5593300
PR4405-18A
PR4405-18
PR4410-18A
PR4410-18
442-18A
PR442-18A
552-20A
PR442-18
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
5.00
5.00
5.00
5.00
5.00
5.00
5.00
5.00
4.80 Ohms
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.80
4.50 Ohms
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.50
4.00 Ohms
4.00
4.00
Watts
34269
36125
46464
50000
51028
76534
98000
98000
Watt Seconds
959801
11352000
3891643
11217400
1733701
3651418
6865200
25630100
Catalog
442-18
PR552-20A
552-20
PR552-20
445-18A
445-18
PR5510-20
PR445-18
Manufacturer
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
2580
2580
4036
4590
4590
5490
5490
6220
7680
8880
8880
10900
10900
19200
19200
23520
25800
25800
34600
34600
38880
58200
58200
61000
61000
69120
99300
99300
132000
132000
129400
185000
395900
401000
500700
169000
809200
802200
1369400
260000
1674500
359000
2912200
586000
4360900
6752000
984000
6330400
628300
2310000
6468100
3696000
18507200
3916000
18507200
17575000
6159000
25969700
8077000
33527500
PRT4F8R2K58
T4F8R2K58
PR4F8R4K03
T4F8R4K59
PRT4F8R4K59
T4F8R5K49
PRT4F8R5K49
PR4F8R6K22
PR4F8R7K68
T4F8R8K88
PRT4F8R8K88
T4F8R10K9
PRT4F8R10K9
T4F8R19K2
PRT4F8R19K2
PR4F8R23K5
T4F8R25K8
PRT4F8R25K8
PRT4F8R34K6
T4F8R34K6
PR4F8R38K8
T4F8R58K2
PRT4F8R58K2
T4F8R61K0
PRT4F8R61K0
PR4F8R69K1
T4F8R99K3
PRT4F8R99K3
T4F8R132K0
PRT4F8R132K0
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
1800
2380
3042
4608
4608
5832
6184
8266
9112
13810
16200
20612
20715
22050
28800
30918
71600
133000
168400
537600
2028300
741800
152850
239950
1547800
660558
4141200
1425576
1425576
6407500
4794300
1486256
PR2205-12A
PR2205-12
PR2210-12A
PR2210-12
PR225-12
PR222-12A
222-12A
222-12
PR222-12
225-12A
PR225-12A
220-12A
225-12
PR220-12A
PR220-12
220-12
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
8100
10000
1238300
2378800
PR4405-19A
PR5505-21A
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
61
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.00
3.90 Ohms
3.90
3.90
3.90
3.90
3.90
3.90
3.90
3.90
3.80 Ohms
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.80
3.30 Ohms
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
3.30
2.70 Ohms
2.70
2.70
62
Watts
14400
19600
20736
25600
28207
32400
40000
40000
42308
44057
57600
66084
Watt Seconds
3623500
5492100
2765900
4394700
1321116
5255300
8413000
8973900
1386961
3441020
14645800
1799627
Catalog
PR4405-19
PR5510-21A
PR4410-19
PR442-19A
442-19A
PR5510-21
PR442-19
PR552-21A
442-19
552-21A
PR445-19A
552-21
Manufacturer
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
7897
14040
24960
31590
32736
45489
49108
62996
1238300
3623500
4394700
5255300
2405659
5531800
3246136
8013142
PR4405-20A
PR4405-20
PR4410-20
PR442-20A
442-20A
PR442-20
442-20
445-19A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PG/IPC
2010
3195
3891
6080
7227
7695
9500
9788
16139
18620
24089
24212
24320
36138
38000
105400
317700
459000
1129600
182571
1238300
1982300
328491
430346
5176500
751149
1321116
3995200
2672955
8413000
PR2205-13A
PR2205-13
PR2210-13A
PR2210-13
222-13A
PR222-13A
PR222-13
222-13
225-13A
PR225-13A
220-13A
225-13
PR225-13
220-13
PR220-13
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
1200
1876
2230
2775
3379
4299
6982
9251
11101
13516
21489
24977
38491
47520
75001
106920
150001
214582
61000
105500
124600
317800
380400
556400
376100
512700
1197900
1530100
3595800
2541900
5071000
8390100
15984900
26362500
41191400
70836500
PF3F3R1K20
PF3F3R1K87
PF3F3R2K23
PF3F3R2K77
PF3F3R3K37
PF3F3R4K29
PF3F3R6K98
PF3F3R9K25
PF3F3R11K1
PF3F3R13K5
PF3F3R21K4
PF3F3R24K9
PF3F3R38K4
PF3F3R47K5
PF3F3R75K0
PF3F3R106K6
PF3F3R150K0
PF3F3R214K4
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
2764
3499
301600
460900
PR2205-14A
PR2205-14
PowerOhm
PowerOhm
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Ohms
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.60 Ohms
2.60
2.60
2.60
2.60
2.60
2.20
2.20
2.20
2.20
2.20
2.20
2.20
2.20
2.10 Ohms
2.10
2.10
2.10
2.10
2.10
2.10
2.10
1.88 Ohms
1.88
1.88
1.88
1.88
1.88
1.88
1.88
1.88
1.88
1.88
1.50 Ohms
1.50
1.50
1.50
1.50
1.50
1.50
Watts
5467
9720
10500
15750
17280
21870
23452
35003
35178
38880
38880
Watt Seconds
928700
2588200
521631
520110
2259300
3941400
1173670
2164091
2187360
8787400
9519700
Catalog
PR2210-14A
PR2210-14
222-14A
222-14
PR222-14
PR225-14A
225-14A
220-14A
225-14
PR220-14A
PR225-14
Manufacturer
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PG/IPC
PowerOhm
PowerOhm
12740
16640
21060
37440
44505
13370
14080
20053
22000
29860
31680
44785
49500
3882400
2824200
3503500
9519700
1126723
316618
2259300
1603773
5047800
1685270
8055100
1724576
10656500
PR4405-21A
PR4405-21
PR4410-21A
PR4410-21
442-21A
222-15A
PR222-15A
222-15
PR222-15
225-15A
PR225-15A
225-15
PR225-15
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
PG/IPC
PowerOhm
1200
1420
1767
2151
2722
3361
4443
84900
83100
168000
253600
365700
599300
266100
PF2F1R1K20
PF2F1R1K42
PF2F1R1K76
PF2F1R2K15
PF2F1R2K72
PF2F1R3K36
PF2F1R4K44
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
4500
6480
8820
11520
14580
15350
23026
25920
34281
35280
1015300
1552900
2588200
2259300
2476600
782447
1570711
6590600
2138364
10068900
PR2205-16A
PR2205-16
PR2210-16A
PR2210-16
PR222-16A
222-16A
222-16
PR222-16
225-16A
PR225-16A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
PG/IPC
PowerOhm
PG/IPC
PowerOhm
5400
5400
6144
7350
15000
19884
1325600
4418900
1075300
1941200
3171800
1308926
PR2205-17A
PR222-17A
PR2210-17A
PR2205-17
PR2210-17
222-17A
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PowerOhm
PG/IPC
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Chapter 4
63
Chapter 4
Selecting An External Resistor for PowerFlex 7-Class Drives Evaluating the PowerFlex 750-Series Internal Resistor
Notes:
64
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Appendix
A
Minimum Dynamic Brake Resistance
Drive Normal Regen DC Bus Rated Continuous Power, Internal Resistors
Duty Rating Voltage (Vd) (Pdb)
PowerFlex
PowerFlex
PowerFlex
70
700
750-Series
Frame Watts Frame Watts Frame Watts
120V, 0.5 HP
395
120V, 1 HP
120V, 1.5 HP
240V, 0.5 HP
240V, 1 HP
240V, 2 HP
240V, 3 HP
240V, 5 HP
240V, 7.5 HP
240V, 10 HP
240V, 15 HP
240V, 20 HP
240V, 25 HP
240V, 30 HP
240V, 40 HP
240V, 50 HP
240V, 60 HP
240V, 70 HP
Minimum Ohms,
External Resistors(1)
PowerFlex Product
4
40
70
700
48
A
48
0
50
48
30.4
35.8
48
0
50
60
48
30.4
35.8
B
28
1
50
60
48
30.4
35.8
35.8
B
40
1
50
48
32
30.4
C
40
1
50
32
19
27.4
29.5
D
36
1
50
13
20.9
22.7
D
36
2
50
10
20.9
21
11.2
11.2
9
9
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
755
48
A
395
753
48
9
9
7
4.6
4.6
2.1
2.1
65
Appendix A
Minimum Dynamic Brake Resistance
Drive Normal Regen DC Bus Rated Continuous Power, Internal Resistors
Duty Rating Voltage (Vd) (Pdb)
PowerFlex
PowerFlex
PowerFlex
70
700
750-Series
Frame Watts Frame Watts Frame Watts
400V, 0.37 kW
A
48
0
50
2
50
480V, 0.5 HP
400V, 0.75 kW
A
48
0
50
2
50
480V, 1 HP
400V, 1.5 kW
A
48
0
50
2
50
480V, 2 HP
400V, 2.2 kW
B
28
0
50
2
50
480V, 3 HP
400V, 4 kW
B
28
0
50
2
50
480V, 5 HP
400V, 5.5 kW
C
40
0
50
2
50
790 for 400V
480V, 7.5 HP
and 480V
400V, 7.5 kW
Drives
C
40
1
50
2
50
480V, 10 HP
400V, 11 kW
D
36
1
50
2
50
480V, 15 HP
400V, 15 kW
D
36
2
50
480V, 20 HP
400V, 18.5 kW
D
2
50
480V, 25 HP
400V, 22 kW
D
480V, 30 HP
400V, 30 kW
480V, 40 HP
400V, 37 kW
480V, 50 HP
400V, 45 kW
480V, 60 HP
400V, 55 kW
480V, 75 HP
400V, 75 kW
480V, 100 HP
400V, 90 kW
790 for 400V
480V, 125 HP
and 480V
400V, 110 kW
Drives
480V, 150 HP
400V, 132 kW
480V, 200 HP
400V, 160 kW
480V, 250 HP
400V, 200 kW
480V, 300 HP
400V, 250 kW
480V, 350 HP
66
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
Minimum Ohms,
External Resistors(1)
PowerFlex Product
4
40
70
700
753
755
97
61.7
63.1
121
97
61.7
63.1
31.6
31.6
121
97
61.7
63.1
31.6
31.6
97
97
61.7
63.1
31.6
31.6
97
77
61.7
63.1
31.6
31.6
55
66.9
63.1
31.6
31.6
39
66.9
63.1
31.6
31.6
24
39.9
43.3
22.6
22.6
27.8
40.2
31.6
31.6
24.6
28.2
31.6
31.6
25.1
21.7
16.6
16.6
17.9
18.7
15.8
15.8
18.7
18.7
15.8
15.8
15.4
7.9
7.9
9.2
7.9
7.9
9.2
3.3
3.3
4.4
3.3
3.3
4.4
3.3
3.3
3.3
3.3
3.3
2.4
2.4
2.4
2.4
1.65
1.65
Minimum Dynamic Brake Resistance
Drive Normal Regen DC Bus Rated Continuous Power, Internal Resistors
Duty Rating Voltage (Vd) (Pdb)
PowerFlex
PowerFlex
PowerFlex
70
700
750-Series
Frame Watts Frame Watts Frame Watts
A
48
0
50
600V, 0.5 HP
A
48
0
50
600V, 1 HP
A
48
0
50
600V, 2 HP
B
28
0
50
600V, 3 HP
B
28
0
50
600V, 5 HP
C
40
0
50
600V, 7.5 HP
C
40
1
50
600V, 10 HP
987.5
D
600V, 15 HP
D
600V, 20 HP
600V, 25 HP
600V, 30 HP
600V, 40 HP
600V, 50 HP
600V, 60 HP
600V, 75 HP
600V, 100 HP
1135
600V, 125 HP
600V, 150 HP
690V, 45 kW
690V, 55 kW
690V, 75 kW
690V, 90 kW
690V, 110 kW
690V, 132 kW
Appendix A
Minimum Ohms,
External Resistors(1)
PowerFlex Product
4
40
70
700
106.1
84
120 106.1
84
120 106.1
84
82
106.1
84
82
72.7
84
51
72.7
75.5
51
72.7
75.5
51
43.6
52
43.6
41.8
28.9
36.1
28.9
28.9
22.2
24.3
22.2
24.3
753
755
17.7
18.1
18.1
6.3
6.3
18.1
18.1
1135
18.1
18.1
6.3
6.3
(1) Does not include a resistor tolerance.
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
67
Appendix A
Minimum Dynamic Brake Resistance
Notes:
68
Rockwell Automation Publication PFLEX-AT001K-EN-P - September 2011
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Publication PFLEX-AT001K-EN-P - September 2011
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