Troubleshooting Guide - Nidec Leroy-Somer Commander ID300 Installation And Quick Start Commissioning Manual

8 - TROUBLESHOOTING GUIDE

Incident
Abnormal
Originating in motor or machine being
noise
driven?
Noisy motor The cause is mechanical if the noise
persists after switching off the power
supply with the drive set to "freewheel"
mode (open enable or STO terminal(s))
• vibrations
• damaged bearings
• mechanical friction: ventilation,
coupling
The cause is electrical if the noise
stops after switching off the power supply
• normal voltage and 3 phases balanced
• abnormal voltage
• phase imbalance
Other possible causes:
• incorrect settings
• drive malfunction
Motor heats
• faulty ventilation
abnormally
• unsuitable switching frequency
• faulty supply voltage
• overload
• partial short circuit
• phase imbalance
Other possible causes:
• incorrect settings
• drive malfunction
Motor does at no load
not start • Mechanical seizing
• broken power supply line
• thermal protection
on load
• phase imbalance
• drive
• thermal protection
Installation and quick start commissioning guide - Commander ID300/302
5511 en - 2018.03 / b
TROUBLESHOOTING GUIDE
Possible cause Remedy
Uncouple the motor from the equipment being driven and
test the motor on its own
• Check that the key conforms to the type of balancing
(see section 2.5, page 16)
• change the bearings
• check installation
• check the power supply at the motor terminals
• check the drive settings
• check the connection of the AC terminal block and the
tightening of the terminals
• check the power supply line
• check the winding resistance
• refer to the Commander ID300/302 user and technical
guide ref.5512
• check the environment
• clean the fan cover and the cooling fins
• check that the fan is correctly mounted
• comply with the minimum switching frequency indicated
on the motor nameplate
• check the voltage
• check the current consumption in relation to that
indicated on the motor nameplate
• check the electrical continuity of the windings and/or the
installation
• check the winding resistance
• refer to the Commander ID300/302 user and technical
guide ref.5512
When switched off:
• check that rotation of the shaft is not locked
• check the fuses, electrical protection
• check
When switched off:
• check the resistance and continuity of the windings
• check the electrical protection
• check the settings
• check
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