DQ542MA Driver proper settings for NEMA 17 Stepper Motor


Using a 24 V power supply I have two NEMA 17 stepper motors each driven by a DQ542MA stepper motor driver. I have the current settings on the driver set for a RMS of 1.69 and a pulse/rev of 400. When I run the motors they run extremely well but become extremely hot. I need help to figure out what would be the proper settings to use in order to stop the overheating.

Attached is a photo of the motor's setting tables:

Driver with current and REV tables


Posted 2018-06-21T06:21:39.647

Reputation: 327



It is completely normal for a stepper motor to get hot. Taking this datasheet for example, specifies a 80 °C temperature rise. That is, in an room that is 25 °C ambient temperature, the motors would get up to 105 °C.

To prevent the motors from getting as hot you could further reduce the operating current, but likely the temperature they're running at is normal.

Tom van der Zanden

Posted 2018-06-21T06:21:39.647

Reputation: 14 003

and add a cooler as well :) – profesor79 – 2018-06-21T08:36:09.310

@profesor79 That should not be necessary. Steppers are designed to run without active cooling. – Tom van der Zanden – 2018-06-21T08:42:21.337

agree. I just don't like to get burnt when touching stuff – profesor79 – 2018-06-21T08:50:46.560