2-phase stepper motor driver

Q2HB44MA(B) is a Constant angle, constant torque micro step driver, the drive voltage of which is from 12V to 40VDC. It is designed for use with the 2-phase hybrid stepper motor of all kinds with 42mm to 86mm outside diameter, 6, 8 leads, regulated phase current from 0.5A to 4A . The unique control circuit that it adopts can reduce motor’s noise, make motor run more smoothly, improve motor’s performance by 30% at high speed, reduce driver’s heating by 50%. It is widely used in the small numerical control devices with high resolution such as curving machine, laser labeling machine and etc.

• High performance, low price
• 12/8 channels constant angle and constant torque micro step, highest micro step: 200
• A unique control circuit is adopted
• Highest response frequency: 200Kpps
• Current of winding will be reduced by approximately 50% when no step pulse command is received for 0.1 second
• Bipolar constant current chopping mode
• Opto-isolated signal I/O
• Drive current is continuously adjustable from 0.5A/phase to 4A/phase
• Single power supply voltage from 12V to 40VDC

Rotary switch for adjustment of the motor current

Input signal oscillogam

Wiring example

Caution

1. Please don’t reverse the power supply, supply voltage shouldn’t exceed 40VDC.

2. Input control signal is 5V, current-limiting resistance should be connected when it is over 5V.

3. Alarm indicator lights and the driver stops working when the driver temperature is over 70℃. It restarts working until the temperature falls to 50℃. The heat sink is needed when overheat occurs.

4. 4.6 or 8 leads motors have to be used because of the special control circuit in the driver.

Subdivision (Micro step) setting for Q2HB44MA