Loading the AKM Motor

[Ansari07]

Dear Community Members,

My question is related to the Kollmorgen AKM motors. I would like to exert variable/controllable torque on the motor shaft, to see the speed/torque characteristics and for speed regulation purposes under various loads. I went to the Kollmorgen website, but could not find a specific part number for this purpose.

Can you suggest a suitable brake or any other loading option? Any other off-the-shelf electrical brake? I especially request the folks who have used this motor in their applications, to share their knowledge and experience in this regards (and all others are welcome too ).

Thanks and Regards,

Ansari

P.S. I am specifically looking at two models, AKM32H and AKM41H, if its relevant.

[Karl-G]

Ansari,

Most brakes of which I am familiar for servo motors are static and not designed to slow down or load the shaft. If you need to load the shaft, the best solution may be to use a mechanical setup. I am curious why you are testing this, as you should be able to use the data sheets for these servos to see their speed and torque characteristics.

[Ansari07]

Hi Karl,

Thanks for the response. I'm doing the load tests for research purposes. Basically, our project revolves around variable speed drive based air-conditioning units. I'd like the ability to load the motor with variable torque, to emulate a fan or blower type load. The purpose is to study the control loop's speed regulation performance, motor current draw, efficiency, etc. We have on hand a magnetic powder brake that can exert variable torque on an induction motor. A similar magnetic brake for servo will do the job for me.

Regards,
Ansari

[Karl-G]

Ansari,

Thanks for the clarification. I am not familiar with these devices (although I can definitely see their applications in testing and control), and I do not see any indication there would be a stock recommendation for the AKM motors. If no one in our community has used this application before, this may be a good question for Kollmorgen's applications engineers; it's possible they have used these on their motors.