6 Learning Protection Features
Protection features provided by the G100 series inverter are categorized into two
types: protection from overheating damage to the motor, and protection against the
inverter malfunction.
6.1 Motor Protection
6.1.1 Electronic Thermal Motor Overheating Prevention (ETH)
ETH is a protective function that uses the output current of the inverter without a
separate temperature sensor, to predict a rise in motor temperature to protect the
motor based on its heat characteristics.
Electronic thermal
prevention fault trip
selection
Electronic thermal 1
minute rating
Electronic thermal
continuous rating
Electronic Thermal (ETH) Prevention Function Setting Details
ETH can be selected to provide motor thermal protection.
The ETH function is not activated.
The inverter output is blocked. The motor
coasts to a halt (free-run).
The inverter decelerates the motor to a stop.