Mitsubishi Electric FR-D720S SC EC, Instruction Manual, Page: 111 / 512

Basic settings Simple mode parameter list
FR-D700 SC EC 5 - 3
NOTES
Protective function by electronic thermal relay function is reset by inverter power reset and
reset signal input. Avoid unnecessary reset and power-off.
When two or more motors are connected to the inverter, they cannot be protected by the
electronic thermal relay function. Install an external thermal relay to each motor.
When the difference between the inverter and motor capacities is large and the setting is
small, the protective characteristics of the electronic overcurrent protection will be deterio-
rated. Thermal motor protection must be ensured by external motor protection (e.g. PTC ele-
ment).
A special motor cannot be protected by the electronic thermal relay function. Use an exter-
nal thermal relay.
Electronic thermal relay does not work when 5% or less of inverter rated current is set to
electronic thermal relay setting.