OPERATION AND MAINTENANCE MANUAL
ID MOTORS
PAGE: 62
CODE: CTT52 EDITION: 03 RELEASE: APRIL 2019
Subject to technical changes without prior notice
Fault
Probable cause
Corrective action
Overheating
during load-free
operation
Converter output voltage too high,
frequency too low
Check adjustments on drive and perform auto-tuning
Fans stopped or turning in opposite
direction
Connect fan. Invert phase sequence in case of inverse
rotation.
Fan broken down or airflow insufficient
due to blocked channels
Repair fan or clean filter
Cooling air is preheated
Ensure the entry of fresh air
Overheating with
load
Excessive load
Reduce load
Converter output voltage too high,
frequency too low
Check adjustments on drive and perform auto-tuning
Power connection problems
Check the drive and power cables
Fan stopped
Connect fan
Fan broken down or airflow insufficient
due to blocked channels
Repair fan or clean filter
Cooling air is preheated
Ensure the entry of fresh air
Overheating on
certain winding
sections
Short-circuit between turns or phase
short-circuit on stator winding.
Determine the winding elements and insulation
elements. Repair them after checking with
manufacturer
Table 27:
Electrical faults (2)
NB:
Because the machine is powered from a frequency converter, please also check the drive converter service instructions
in the event of electrical faults.
