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:

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 setting

Closest to your motor’s required current 

7. Driver Wiring

A complete stepper motor control system should contain stepper drives, DC power supply and controller (pulse source). The following is a typical system wiring diagram.