Santerno Sinus M, User Manual

Page: 195 / 219

14-3
14.2 Fault remedy
Keypad
display
Cause Remedy
Overcurrent
Caution:
When an overcurrent fault occurs, operation must be started after the cause is
removed to avoid damage to IGBT inside the inverter.
Accel/Decel time is too short compared
to the GD
2
of the load.
Load is greater than the inverter rating.
Inverter output is issued when the motor
is free running.
Output short circuit or ground fault has
occurred.
Mechanical brake of the motor is
operating too fast.

Increase the Accel/Decel time.

Replace the inverter with appropriate
capacity.

Resume operation after stopping the
motor or use H22 (Speed search).

Check output wiring.

Check the mechanical brake.
Overcurrent2
Short occurs between up and down of
IGBTs.
Inverter output short occurs.
Accel/Decel time is too short if
compared to GD
2
.
 Check the IGBTs.
 Check output wiring.

Increase the Accel/Decel time.
Ground fault
current
Ground fault has occurred at the output
wiring of the inverter
The insulation of the motor is damaged.

Check the wiring of the output
terminal.

Replace the motor.
Inverter
overload
Load is greater than the inverter rating.
Torque boost scale is set too large.

Upgrade the capacity of motor and
inverter or reduce the load weight.

Reduce torque boost scale.
Overload trip
Inverter
overheat
Cooling system has faults.
A damaged cooling fan is not replaced
with a new one.
Ambient temperature is too high.

Check for alien substances clogged in
the heatsink.

Replace the damaged cooling fan
with a new one.

Keep ambient temperature under
50 ° C.
Output
Phase loss
Faulty contact of magnetic switch at
output
Faulty output wiring

Make connection of magnetic switch
at output of the inverter securely.

Check output wiring.
Cooling fan
fault
An alien substance is clogged in a
ventilating slot.
Inverter has been in use without
changing a damaged cooling fan.

Check the ventilating slot and remove
the clogged substances.

Replace the damaged cooling fan.