
B-65325EN/01 TROUBLESHOOTING FOR βi SVM 3.TROUBLESHOOTING AND ACTION
- 41 -
3.1.6 Inverter: Cooling Fan Stopped of the Radiator
(1) Meaning
Inverter: cooling fan stopped of the radiator
(2) Cause and troubleshooting
(a) Check whether there is any foreign material in the fan.
(b) Be sure to push the faceplate (control printed-circuit board)
as far as it will go.
(c) Check that the fan connector is attached correctly.
(d) Replace the fan.
(e) Replace the SVM.
3.1.7 Inverter: IPM Alarm
(1) Meaning
Inverter: IPM alarm
(2) Cause and troubleshooting
(a) Be sure to push the faceplate (control printed-circuit board)
as far as it will go.
(b) Disconnect the motor power leads from the SVM, and
release the SVM from an emergency stop condition.
<1> If no IPM alarm condition has occurred
→ Go to (c).
<2> If an IPM alarm condition has occurred
→ Replace the SVM.
(c) Disconnect the motor power leads from the SVM, and check
the insulation between PE and the motor power lead U, V, or
W.
<1> If the insulation is deteriorated
→ Go to (d).
<2> If the insulation is normal
→ Replace the SVM.
(d) Disconnect the motor from its power leads, and check
whether the insulation of the motor or power leads is
deteriorated.
<1> If the insulation of the motor is deteriorated
→ Replace the motor.
<2> If the insulation of any power lead is deteriorated
→ Replace the power lead.