Vascat ID Series Operation And Maintenance Manual page 62

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