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

Summary

Introduction and Features

Product Features Overview

Details key attributes like high performance, low price, and suitability for various CNC applications.

Technical Data

Electrical Specifications

Covers input/output voltage, current, consumption, temperature, humidity, gas, and weight.

Connector Pinout and Signals

Explains the function and details of control input pins such as PUL, DIR, and ENBL.

Input Port Circuit Diagrams

Illustrates the wiring for PC open collector and PNP outputs to the driver's input ports.

Configuration and Settings

Micro Step Resolution

Describes setting microstep resolution using DIP switches SW5, SW6, SW7, and SW8.

Standstill Current Adjustment

Explains how DIP switch SW4 controls the standstill current relative to the dynamic current.

Output Current Configuration

Details setting the dynamic current using DIP switches SW1, SW2, and SW3.

Semi-flow Functionality

Explains automatic reduction of output current after 500ms of no pulse to prevent motor overheating.

Power and Mounting

Power Supply Connections

Specifies the +V and GND connections for the DC power supply (16-50 VDC).

Motor Wiring

Details connecting the 2-phase hybrid stepper motor via A+, A-, B+, B- terminals.

Installation and Fixing Guidelines

Provides recommendations for mounting, spacing, and environmental considerations.

Troubleshooting

Indicator Light Status

Explains the meaning of RUN (green) and ERR (red) indicator lights.

Common Problems and Solutions

Lists alarm indicators, causes for issues like LED off or motor not running, and their measures.

System Wiring Diagram

Typical System Wiring

Presents a diagram showing the complete system wiring with controller, driver, power supply, and motor.

wantai DQ542MA Specifications

General

Input Voltage	20-50 VDC
Control Method	Pulse/Direction
Pulse Frequency	200 KHz
Output Current	4.2 A
Operating Temperature	0°C to 50°C
Dielectric Strength	500V/minute