wantai DQ542MA User Manual

Manual of 2-phase hybrid stepper motor driver DQ542MA

Introduction:

DQ542MA is a type of two-phase hybrid stepping motor driver, the drive voltage of which is
from 18VDC 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 that it
adopts is similar to the circuit of servo control which enables the motor run smoothly almost
without noise and vibration. Holding torque when DQ542MA 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, 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 18VDC to 50VDC

Opto-isolated signal I/O

Overvoltage, under voltage, overcurrect, phase short circuit protection

15 channels subdivision and automatic idle-current reduction

8 channels output phase current setting

Offline command input terminal

Motor torque is related to speed, but not related to step/revolution

High start speed

High holding torque under high speed

Electrical specification:

Input voltage

18-50VDC

Input current

＜ 4A

Output current

1.0A～4.2A

Consumption

Consumption：80W； Internal Insurance：6A

Temperature

Working Temperature -10～45℃

；

Stocking temperature -40℃～70℃

Humidity

No condensation, no water droplets

gas

Prohibition of combustible gases and conductive
dust

weight

300GS

1. Pins assignments and description:

1) Connector Pins Configurations

Pin Function

Details

PUL +,PUL-

Pulse signal, PUL+ is the positive end of pulses input pin

PUL- is the negative end of pulse input pin

DIR+,DIR-

DIR signal: DIR+ is the positive end of direction input pin

DIR- is the negative end of direction input pin

ENBL+

Enable signal: ENBL+ is the positive end of direction input pin. This signal is used for
enabling/disabling the driver. High level for enabling the driver and low level for disabling the

driver.

ENBL-

ENBL- is the negative end of direction input pin. Usually left unconnected (enabled)

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