YKA2404S Full/half step Driver
YKA2404S Full/half step Driver
Features
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half
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High performance,low price
Special control circuit,greatly reduce noise,increase steadiness
Upmost response frequence amounts to 50Kpps
Once the pulse stops for 100ms，the phase current will automatically cut by
Bipolar constant current chopper control
Photocoupler isolated input/output
Drive current range from 0.5A/phase~4.0A/phase
Can match two phase hybrid step motors whose rated current under4.0A
Single power input, voltage range from DC12-40V
Protection circuit
――Overheat protection
――Overcurrent,under voltage protection
Small in size
YKA2404S is an economic、compact driver, its dimension is only 25x136x92mm3.
Typical application
Carve machine、laser labeling machine、laser internal carve machine、wire barker
Description
YKA2404S is a full/half step driver，voltage range from DC12-40V，single power input. It can match
6 leads or 8 leads two phase hybrid step motors whose rated current under 4.0A、flange size range from
42～86mm.
Owe to bipolar constant current chopping circuit, the motor can run smoothly and hardly has any
noise；Rising the voltage can greatly improve high speed performance and output torque of the motor.
Once the pulse stops for 100ms，the phase current will automatically cut by half, which can reduce
chances of overheat.
Electricity specification
Item
Minimum
Typical
Supply voltage V（DC）
12
40
Normal output（A）
0.5
4.0
15
Logical input（mA）
Response frequence
Maximum
-
-
50
10
-
-
（KHZ）
Pulse low state time
（µS）
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YKA2404S Full/half step Driver
Running current setting
Function setting
Input signal timing diagram
Driver connection
Connection example
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YKA2404S Full/half step Driver
！Caution
1. Do not reverse the power input,input voltage should not exceed DC40V。
2. Input logic should be 5V，otherwise it should connect a resistor
3.Due to the special control circuit, this module only for 6 leads or 8 leads step motors.
4. O.H is malfunction indicator. Once the driver temperature exceeds 70°C,the current will be cut off
automatically and the driver will resume working till the temperature drops to 50°C. If this happens,
please install ventilation equipment.
5. Once over current (short circuit)/under voltage occur, LED O.C lights, please shut off power and check
the electricity circuit to solve the problem, then restore power supply
6. PWR is power indicator，it lights when power on
7. Passing the origin or there is pulse output, TM LED lights
YKA2404S DIP switch description
MICROSTEP
1(FULL STEP)
2(HALF STEP)
D6
ON
OFF
D5
Null
D4
Null
D3
Null
D2
D1
ON: clockwise pulse(PU) + counter clockwise pulse(DR) control
OFF: pulse + direction control（PU is pulse signal，DR is direction signal）
Null
Installation dimensions（unit：mm）
41
10
127
136
12.5
Y KA2 404 S
4.5
25
82
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YKA2404S Full/half step Driver
Indication LED & Idle state current adjuster description
ITEM
PWR
FUNCTION
Power indicator
TM
Origin/Pulse
indicator
O.H
Malfunction indicator
O.C
Im
NOTES
When power on, the green LED lights
output
Passing the origin or there is pulse output, the green LED lights
When overheat occurs, the red LED lights
Overcurrent/Under voltage When current exceeds rated value or voltage lower rated value,
indicator
the red LED lights
Phase
current
setting Adjust phase current. Turning it clockwise will increase the current
output, counter clockwise decrease
adjuster
Terminal assignment
ITEM
＋
FUNCTION
Input signal positive side
D2=OFF, PU is pulse signal
PU
＋
D2=ON，PU is clockwise pulse signal
Input signal positive side
NOTES
It can connect +5V or +24V, but +24V should add an
extra resistor
Effects on falling edge ,the motor goes one step as the
pulse input change from “high”to “low”.Input resistance is
220Ω.Requirement：input low：0－0.5V，input high:4
－5V，pulse width>10μs
It can connect +5V or +24V, but +24V should add an
extra resistor
Use to change the direction. Input resistance is 220Ω.
D2=ON ， DR is counter clockwise Requirement：input low：0～0.5V，input high:4～
5V，pulse width>10μs
pulse signal
It can connect +5V or +24V, but +24V should add an
Input signal positive side
extra resistor
Once effects, it will cut off the motor current, the driver
Motor free signal
stops working and sets the motor free
D2=OFF，DR is direction control signal
DR
＋
MF
＋V Power+
－V Power-
DC12～40V
AC、BC
+A、-A
Connect to the motor
+B、-B
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