M860 2.8A~7.8A 24Vdc to 80Vdc stepper motor drive

M860 is a type of two phase hybrid stepping motor driver. The drive voltage of which is from 24VDC to

80VDC. It is designed for use with 2phase hybrid stepper motor of all kinds with 57mm to 110mm outside

diameter and less than 7.8A phase current. This circuit that it adopts is similar to the circuit of servo

control which enables the motor run smoothly almost without noise and vibration. Hording torque when it

run under high speed is also significantly higher than the other two phase driver, what’s more,the

positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such

as curving machine, CNC machine, and computer embroider machine, packing machines and so on.

Features:

* High performance, low price

* Average current control, 2-phase sinusoidal output current drive

* Supply voltage from 24VDC to 80VDC

* Opto-isolated signal I/O

* Overvoltage, under voltage, overcorrect, phase short circuit protection

* 14 channels subdivision and automatic idle-current reduction

* 8 channels output phase current setting

* Offline command input terminal

* Motor torque is related with speed, but not related with step/revolution

* High start speed

* High hording torque under high speed

Electrical specification:

Pins assignments and description:

1) Connector Pins Configurations

2) Pins wiring diagram:

PC’s control signals can be active in high and low electrical level. When the high electrical level is active, all control

negative signals will be connected together to GND. When low electrical level is active, all control positive

signals will be connected together to public port.

Now give two examples( Open collector &PNP), please check them:

Fig 1. Input port circuit (Yang connection) PC open connector output

Fig. 2 Input port circuit ( Yin connection)

PC PNP output

Note: When VCC=5V, R=0

When VCC=12V, R=1K, >1/8W

When VCC=24V, R=2K,>1/8W

R must connect in the control signal part .