Rotary switch for adjustment of the motor current
Caution
Steps per revolution
1(full step)
2(half step)
D0
ON
OFF
D4
ON, double pulse: PU is positive step pulse signal, DR is negative step pulse signal
OFF, single pulse: PU is step pulse signal, DR is direction signal
Terminal function
Symbol
Signal
Specification
O.H
Alarm indicator
The red indicator lights when overheat occurs.
POWER
Power indicator
The green indicator lights when power is on.
Im
Adjust motor’s phase current. Turning it in CCW will decrease the current and in CW will increase.
+
Positive of opto-isolated
Connected to +5V power supply. Drive voltage ranges from +5V to +24V. Current-limiting resistance is needed when it is over 5V.
PU
D4=OFF, PU is step pulse signal
With the falling edge of the signal PU, the motor performs an angular step. The input resistance is 220Ω. Low voltage 0-0.5V, high voltage 4-5V, pulse width>2.5μS.
D4=ON, PU is positive step pulse signal
DR
D4=OFF, DR is direction signal
Change motor’s direction of rotation. Input resistance is 220Ω. Low voltage 0-0.5V, high voltage 4-5V, pulse width>2.5μS
D4=ON, DR is negative step pulse signal
MF
Motor free signal
The motor current will be cut off and the driver stops working when it is effective.
The motor current is cut off automatically and signal FL is effective (low voltage) when the temperature of the driver is over 70?. The driver starts to work and the FL is cleared when the temperature falls to 50?.
FL
Negative of opto-isolated
Connect + to current limiting resistance of output signal and connect FL to ground. The maximum drive current is 50mA, the highest drive voltage is 50V.
+V
Positive of power supply
24-80VDC
-V
Negative of power supply
AC?BC
Connection
+A?-A
+B, , , ?-B
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