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1.High performance, low price, 2.Average current control, 2-phase sinusoidal output current drive, 3.High start speed - details see: https://www.machineto.com/m542-1-0a-4-2a-24vdc-to-50vdc-stepper-motor-drive-10234477

Introduction

M542 is a type of two phase hybrid stepping motor driver, The drive voltage of which is from 24VDC to 50VDC. It is designed for

use with 2 phase hybrid stepper motor of all kinds with 42mm to 86mm outside diameter and less than 4.0A phase current. This

circuit thait 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 driverwhat’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,

Computer embroider machine, packing machines and so on.

Features:

l High performance, low price

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

l Supply voltage from 24VDC to 50VDC

l Opto-isolated signal I/O

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

l 15 channels subdivision and automatic idle-current reduction

l 8 channels output phase current setting

l Offline command input terminal

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

l High start speed

l High hording torque under high speed

Electrical specification

1. 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

3.Function choice ( Using DIP pins to achieve this function)

1) Micro step resolution is set by SW 5,6,7,8 of the DIP switch as shown in the following table:

:

2) Standstill current setting

SW4 is used for this purpose. OFF meaning that the standstill current is set to be half of the selected dynamic current and ON

meaning that standstill is set to be the same as the selected dynamic current.

3) Output current setting:

The first three bits (SW 1, 2, 3)of the DIP switch are used to set the dynamic current. Select a settingClosest to your motor’s requiredcurrent