wantai DQ542MA Manual
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wantai DQ542MA Manual

2-phase hybrid stepper motor driver
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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

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Summary of Contents for wantai DQ542MA

  • Page 1 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.
  • Page 2 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...
  • Page 3 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.
  • Page 4 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: PULS E/RE...
  • Page 5 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.
  • Page 6 Picture 3 6. Troubleshooting 1, the status on light’s indication RUN: green, normal work light. ERR: red, failure light, the motor with phase short-circuit, overvoltage and under-voltage protection. 2 Troubles Alarm indicator Causes Measures Wrong connection for power Check wiring of power LED off turn Low-voltages for power Enlarge voltage of power...
  • Page 7 RESET signal is effective Make RESET ineffective when offline Motor doesn’t run, but Without input pulse signal Adjust PMW & signal level maintains holding torque Change connection for any of Wrong wires’ connection 2 wires Motor runs wrong direction Wrong input direction signal Change direction setting Too small relative to current Correct rated current setting...

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