Larsen & Toubro C*2000 Series User Manual page 165

Chapter 12 Troubleshoot and maintenance
Electronic thermal
protection
Input phase loss
12-2
The internal electronic thermal of the inverter determines the
overheating of the motor. If the motor is overloaded the inverter
turns off the output. The inverter cannot protect the motor when
driving a motor having more than 4 poles or multi motors.
Inverter output is blocked when one of R, S, T is open or the
electrolytic capacitor needs to be replaced.
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Cx2000 AC Drive