©
2011 by Huchez Treuils S.A.S.
Translation of the original instructions
16
EN
Reproduction prohibited
12 – Operating faults
Fault
Possible cause
Solution
Motor does not
start.
Power supply cut.
Check and correct the problem.
Check the emergency stop.
Brake not released
See "brake fault"
Limit switch engaged.
Check the limit switch.
Motor does not
start
or starts with
difficulty.
The voltage or frequency varies
considerably compared to the
setting
when starting.
Improve the mains conditions.
Check the cable sections.
Motor revs and
absorbs
a great deal of
power.
Brake not released.
See "brake fault".
Faulty winding.
Take the motor to an approved
workshop for repair.
Circuit breaker
activated
immediately.
Short circuit in the power supply
cables.
Eliminate the short circuit.
Short circuit in the motor.
Have the fault corrected in an approved
workshop.
Power supply cables incorrectly
connected.
Correct the connection.
Motor earth fault.
Have the fault corrected in an approved
workshop.
Speed greatly
reduced when
loaded.
Voltage drop.
Increase the power supply cable
section.
Motor too hot
(temperature
measurement)
Insufficient ventilation.
Clear the ventilation lanes.
Ambient temperature too high.
Respect the authorised temperature
range.
Circuit breaker activated.
Bad contact in the relays.
Service factor exceeded (S1 to
S10, DIN 57530), e.g. because
start speed is too high.
Adapt the service factor to the
prescribed conditions; if necessary, call
a specialist to determine the type of
motor.
Drive system too
noisy.
Rotating parts vibrate.
Check the balances, eliminate the cause
of the vibrations.
Foreign bodies in the ventilation
lanes.
Clean the ventilation lanes.
Brake not
released.
Max. air gap exceeded due to
worn lagging.
Adjust the air gap (MOTORBOX 300/500
kg)(see 9.2).
Change the motor (MOTORBOX 150 kg)
Motor does not
brake.
Incorrect air gap.
Adjust the air gap (MOTORBOX 300/500
kg)(see 9.2).
Brake lagging totally worn.
Change the motor.
