View Full Version : KL23H286-20-8B and IMT 901 Controller

04-18-2010, 01:40 AM
I have 3 the same sets (IMT 901 is the same as TA8435HQ). In Bipolar series I can only pulse up to 3200 HZ ( about 16 rev/sec) and in Bipolar parallel 5000HZ or 20 rev sec. After that the motors rumble and stall. Run absolutley sweetly at about 2800HZ. Several other things noted, they draw about 1.8Amps when stopped and about 0.26 when running uncoupled, still the same problem. Can anyone tell me why this may be happening? Tried adjusting voltage in from 13 to 22V, almost no difference