ABB HDP Series, Manual

Page: 27 / 28

9AKK105975, Rev. A 06-2013 | ABB Motors and Generators EN – 27
8. Troubleshooting
These instructions do not cover all details or variations in
equipment, nor do they provide for every possible condi-
tion which may be encountered in relation to installation,
operation or maintenance. Should additional information
required, please contact the nearest ABB sales office.
Motor troubleshooting chart
Your motor service and any troubleshooting must be
handled by qualified persons who have the proper tools
and equipment.
PROBLEM CAUSE ACTION
Motor does not start Power supply Check the ratings of the power supply.
Wrong connections Check the connections of the power cables.
Mechanical brake locked Check that the brake is supplied with 24VDC in
tolerance range and that is not locked.
Mechanical failure Check that the mechanics coupled to the motor allow
free rotation.
Overload Reduce the load or resize the motor.
Motor does not
reach the rated
speed Supply voltage Check the level of the supply voltage.
Voltage too low at motor terminals
because of line drop Use higher voltage or transformer terminals or reduce
load. Check connections. Check conductors for proper
size.
Overload Reduce the load or resize the motor.
Motor runs in wrong
direction Exchange any two phases.
Motor overheated Overload Reduce the load or resize the motor.
Failing ventilation Clean the motor, the filters and the grid of the fan
motor. Check that the fan is operating. Check for free
ventilation and cooling.
Wrong connections Check that no phase is incidentally open or grounded.
Harmonic distortion High harmonic distortion in the frequency converter
output is not allowed.
Vibrations or loud
noise Foundation Check that the foundation is adequate. Renew and
reinforce foundation if necessary.
Bearings failure If ball bearings contact ABB for replacements.
If roller bearings check for regular lubrication and
regrease if necessary. Do not exceed with grease
quantity. Contact ABB for repairs.
Misalignment Check for correct alignment of motor and load.
Ignoring misalignment can cause serious damage of
bearings, shaft and mechanics.