Shihlin electric SL3 Series, User Manual

Page: 111 / 211

Protection parameter group 06
PARAMETER DESCRIPTION 107
5.7.1 Electronic thermal relay capacity

“Electronic thermal relay” uses inverter computing power to simulate a thermal relay for preventing motor from
overheating.
Parameter Name Default Setting Range Content
06-00
P.9
Electronic thermal relay
capacity
0.00 0~500.00A ---
Electronic thermal relay capacity

Please set the value of 06-00(P.9) as the rated current value of the motor at the rated frequency. Rated
frequencies of squirrel cage induction motors manufactured in different countries and regions are different. Please
refer to the motor nameplate for specific data.

If 06-00(P.9)=0, electronic thermal relay is off.

When the electronic thermal relay calculates that the motor has accumulated too much heat, the keypad will
display a fault code
and the output will stop.
Note: 1. After the inverter is reset, the heat accumulation record of the electronic thermal relay will return to zero, this
should be paid attention to during use.
2. If two or more motors are connected to the inverter, the electronic thermal relay cannot be used as overheat
protection for the motors. Please install external thermal relay on each motor.
3. When special motors are used, electronic thermal relay cannot be used for protection. Please install external
thermal relay on the motor.
4. Please refer to 03-00(P.83), 03-01(P.84), 03-03(P.80), 03-04(P.81)
for the use and wiring method of thermal
relay.
Setting