DQ542MA

 DQ542MA

  • Model:

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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:

18-50VDC

Output current

Consumption

Temperature

Stocking temperature -40℃70℃

No condensation, no water droplets

Prohibition of combustible gases and conductive dust

300GS

1.     Pins assignments and description:

 

1)     Connector Pins    Configurations

                Details                                                          

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

 

DIR signal: DIR+ is the positive 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- 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:
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                     Fig 1. Input port circuit (Yang connection)

                            PC open connector output

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                                    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:

:

SW5

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

SW6

ON

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

SW7

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

ON

ON

OFF

OFF

OFF

OFF

SW8

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

PULSE/REV

400

800

1600

3200

6400

12800

25600

1000

2000

4000

5000

8000

10000

20000

25000

 

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 

Output current (A)Alarm indicator

Causes

LED off turn

Check wiring of power

Enlarge voltage of power

Wrong connection of stepper motor

RESET signal is  effective when offline

Motor doesn’t run, but maintainsWithout input pulse signal

Motor runs wrong direction

Change connection for any of 2 wires

Change direction setting

Too small relative to current setting

Acceleration is too fast

Motor stalls

Driver does not match with the motor

<span style="font-size:10.0pt;font-family:"">Change a suitable driver

 

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.

 

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label: DQ542MA
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