57
Service Manual
Plus
MICROSPEED
6.0 Troubleshooting
Troubleshooting
1) When power is on -the green OK LED doesn't come on.
-Check the voltage between +AT and -AT with a multimeter
2) With the green OK LED on the motor doesn't run when
the drive is enabled.
- Check input signal (Enable-reference)
3) When the drive is enabled the green OK LED goes off and
the red O.C. LED comes on.
- Short circuit between motor terminals or motor winding is
connected to ground. Switch off and measure with tester.
4) During motor deceleration phase the green OK LED
blinks.
-You've exceeded max. consented voltage. Verify filter capacity
value. (See Power Supply chapter).
5) During operation the motor stops and the S.T. LED
comes on.
-Drive operating temp. is too high (more than 40°C). Ventilation
missing (where required).
6) At Startup or Enabling the DT Led comes on.
-Missing Tachogenerator Signals or reversal.
-Missing Encoder Signal or reversal.
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