6
S1 Switch
：
1. 1P /2P mode
‧
1P mode: Pulse (PLS) and direction
(DIR) controls the motion operation.
‧
2P mode: Clockwise(CW) and counter-
clockwise(CCW) controls the motion
operation.
2. ACD, auto current down
Auto current down while no pulse in. Use
this function to reduce the heat of step
motor, but if you need to hold the torque
while stand by , switch off to disable this
function
3,4.: MS1
，
MS2. Micro-step mode selection
4
LED indicator
4.1
POWER: green LED, power OK will light.
5
CONTROL SIGNAL
5.1
The control signal is isolated by photo-isolator and the external signal transit state from HIGH
to LOW will drive one step.
5.2
The minimum pulse width is 5 micro second, the transition time is less than2 micro second.
5.3
The input voltage range is from 5VDC to 24VDC and the current must limit to under 20ma.
The driver output signal is limited to under 15ma.
Input Signal circuit Pulse Width Diagram
