
86
14. Protective function ■
◆Overheating protection
Description: Set action when inverter detects action point and overheating.
Set Cd84 to Inverter overheating detection level. OH1 is displayed and inverter will stop free run when it is
detected.
Cd82 set Inverter overheating forecast level, set Cd84 to 100%. Select operation by Cd83 when overheating
forecast occurred.
Cd83 setting value
Description
0
Deceleration stop (Inverter is stopped by set deceleration time)
1 Coast
stop
2
Emergency stop (Inverter is stopped by Cd11)
3
Continuous operation, OH b displays overheating forecast
◆Motor overload protection
When motor operation exceeds motor rated current is overload operation. It is overload operation. If motor is
under overload operation, it might lead to burn the motor.
(1) CT2000FG: Set protection point of motor to be 150% of motor rated current, overload time is 60 sec,
OLA is displayed when overload occurred, motor stops free run.
(2) CT2000FP: Set protection point of motor to be 120% of motor rated current, overload time is 60 sec,
OLA is displayed when overload occurred, motor stops free run.
Constant No.
Constant name
Settable range
Factory setting
Change during
operation
Cd82
Inverter overheating forecast
detection level
50 100 90% X
Cd83
Motion when Inverter overheating
forecast detection
0 3 3 X
Cd84 Temperature
protection level
50 130
85℃
X