P-I Servoamplifier
G122-829
Description
The G122-829 P-I Servoamplifier is used in closed loop
applications where a proportional and/or integral amplifier is
needed. Selector switches inside the amplifier enable
proportional, integral or both to be selected. Many aspects of
the amplifier’s characteristics can be selected with internal
switches. This enables one amplifier to be used in many
different applications. The configuration options provided are
the result of many years of experience in designing and
commissioning closed loop systems.
These are summed to produce an error signal which is then
amplified proportionally and also integrated. The proportional
and integral signals are switched together and output as a
current or voltage to drive a servovalve.
Front panel trim pots, LED indicators and test points allow fast
and easy setup and aid in trouble shooting. The servoamplifier
is housed in a compact DIN rail mounting enclosure and
requires a +24V supply.
The Servoamplifier employs analog electronics. It accepts
three input signals, two single ended and one differential.
Features
P, I or P & I control
Step push button
User friendly front panel with LEDs
and test points
Optional feedback derivative
term
Single ended input, 4-20 mA or
±10 V, switch selectable
“In position” output
Single ended input, scalable
Enable input
Differential input with zero and gain
Feedback transducer excitation
output
Dither
Compact DIN rail housing
CE marked
Switch selections
Input 1, lag on or off
Feedback input 4-20 mA or ±10 V
Input 2, 4-20 mA or ±10 V
Proportional control, integral control or both
Integrator input from unity gain or amplified error signal
Integrator limit
Output current or voltage
Output current level
Dither on or off
Plug-in resistors
Input 2 = 100k for ±10 V
Feedback derivative term = not loaded
Proportional gain range = 100k for 1 to 20 range
Input 3 direct to output amp = not loaded
Ordering information
P-I Servoamplifier G122-829-001
Special configurations can be provided. Consult your Moog sales office to discuss details.
The G122-829-001 is a functional replacement for the G122-824-002 version. It has a different pin-out and improved high gain performance.
Operating details
Supply 250mA
Power Supply
+24V
T fuse
+24V
1
0V
2
PLC
LED
enable
+15V
Vs LED
TP
enable
+24V
11
+24V
12
Enable
+24V
9
see note 1
see note 1
Input 2
100K
V
8
0Vref
4-20mA
Converter
16
gain
In position
INT
10
Error Amp
scale
signal
5
0Vref
6
Av=1
47K
+24V
4
Integrator input
select
240R
Input 1
+
Integrator
R34
V
3
lim
bias
7
signal
In Position
Comparator
-15V
+
E
see note 1
P
47K
10K
PR
P Gain Amp
+15V
14
-15V
15
13
1K
cmd lag
P gain
see note 1
Input 3
R17
100K
100K
feedback lead
2.2uF
Transducer
Excitation
+10V
0V
39R
-50%
100K
4-20mA
Feedback Input
18 240R 100K
0Vref
feedback
TP
100K
26
Input 3:
Feedback input:
Feedback amp:
Transducer excitation:
Error amp:
Proportional amp gain:
Integrator gain:
Integrator input:
Enable:
Output amp:
32
E
Typical D66X
Prop. valve
F
spool
see note 2
13
see note 1
V
mfb Valve
Connect to
pins 31 & 32.
V
Note: 2. Connect spool (pin F) to terminal 22,
only if the spool signal is a current.
Note: 3. Switches shown in default shipping mode.
Valve supply:
In position:
P, I, or P & I, switch selectable
Scaled to 95V max with switch
selectable lag of 55mS.
4-20mA 240R load, for 0 to +10V on R34.
Or 0 to ±10V direct onto R34.
R34 is plug-in, 100K nominal.
R33 plug-in. ±10V gives ±100% valve drive
when R33 = 10k Ohm, ±10% when R33 =
100k Ohm.
R34 is plug-in, 100K nominal.
Differential 4-20mA or ±10V, switch
selectable
±15V max.
R in 100k – ±10V
R in 240R – 4-20mA
Zero, ±10V.
Gain, 1 to 10.
Derivative (velocity) feedback via
plug-in resistor R16 and fixed capacitor.
+10V @ 10mA max.
Unity gain.
Bias ±1.5V.
1 to 20.
1 to 45 per second.
Switch selectable from output of unity gain
error amp or proportional gain amp
Relay, +24V @ 8mA, 17 to 32V.
Switch selectable voltage or current, single
ended output, return to ground.
V. ±10V, minimum load = 200 Ohm
I. ±5, 10, 20, 30, 50mA to a maximum
of ±100mA
11V – 39 Ohm
max load =
I (Amp)
-50% valve drive disturbance.
(
Step push button:
D
Av=10
LED
Specifications
Input 2:
31
valve
Feedback Amp
Note: 1. Connect cable screen to enclosure cable gland
or chassis ground terminal on G122-829-001.
Function:
Input 1:
efb Valve
100K
gain
25
B
22
20R 50mA
100R
V
A
24
51R 20mA
dither
Dither
Oscillator
23
33R 30mA
TP
valve
+
17
Output Amp
Step P.B.
dither
27
+
+24V
200R 5mA
100R 10mA
20
see note 1
V= 1V
+10V
zero
Typical
linear pot
feedback
Sum & Limit
Amp
R33
N.F.
+
19
28
R16
N.F.
21
signal
)
Front panel
indicators:
Front panel
test points:
Front panel
trimpots:
(15 turns)
Dither:
Supply:
±15V output:
Wire size range:
Recommended
supply protection:
Mounting:
Temperature:
Dimensions:
Weight:
CE mark:
C tick:
Pin 14, 300mA max.
±10% of valve drive. 20mA and 40V max
output to PLC.
Vs, internal supply – green
Valve drive positive – red
negative – green
Enable – yellow
In position – green
Valve ±10V (regardless of output
signal selection)
Feedback amplifier output signal 0V
Input 1 scale
Error amp bias
P gain
I gain
Dither level
Feedback amp gain
Feedback amp zero
200 Hz fixed frequency.
±10% valve drive. Switch selectable on/off
24V nominal, 22 to 28V
75mA @ 24V, no load,
200mA @ 100mA load
±10mA maximum
0.2mm2 to 2.5mm2 (24AWG to 12AWG)
M205, 250mA T (slow blow) fuse
compliant to IEC127-2 sheet 3
DIN rail
IP 20
0 to +40ºC
100W x 108H x 45D
180g
EN50081.1 emission
EN61000-6-2 immunity
AS4251.1 emission
Internet data
Industrial Controls Division. Moog Inc., East Aurora, NY 14052-0018. Telephone: 716/652-3000. Fax: 716/655-1803. Toll Free 1-800-272-MOOG.
Moog GmbH. Germany. Telephone: 07031-622-0. Fax: 07031-622-100.
Moog Sarl. France. Telephone: 01 45 60 70 00. Fax: 01 45 60 70 01.
Moog Australia Pty. Ltd. Telephone: 03 9561 6044. Fax: 03 9562 0246.
Moog pursues a policy of continuous development and reserves the right to alter designs and specifications without prior notice. Information contained herein is for guidance only and does not form part of a contract.
~
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Ireland: Ringaskiddy Italy: Malnate (VA) Japan: Hiratsuka Korea: Kwangju-Kun Philippines: Baguio City Singapore: Singapore Sweden: Askim USA: East Aurora (NY)
G122-829-001 09.08
For detailed Application Notes and the latest version of this Data
Sheet please refer to the Moog website www.moog.com/dinmodules