1- A short-circuit or ground fault occurred
at the U, V, W motor output. Check motor
connection.
2- The IPM temperature may be too high
because of the Inverter’s cooling fan has
stopped. Check cooling fan.
3- An over-current may be occurred on the
output of inverter so that inverter may have
overheated because of the incorrect
parameter setting. Check the parameter
setting.
4- The main supply voltage may be too low.
Check the L1, L2, L3 voltages.
5- The main contactors of motor output
have not to change its position while the
inverter driving the motor. If the contactors
drop after the inverter stops driving and
waits as the brake delay time, increase the
contactor delay time. Check the contactor’s
supply voltage if the contactor changes its
position whiles the inverter driving the
motor.
1- If mains power is active: The main
supply voltage may be too low. Check the
L1, L2, L3 voltages.
2- If battery power is active: Check the
battery voltage on the terminals L1 and L3.
1- Braking resistor may not be connected
properly. Check broken or disconnected
wiring.
2- Braking resistor’s resistance may be
incorrect. Be sure that the braking resistor is
suitable for Inverter's power and motor
power.