5.The Concrete Explanation of Function Parameters
EM8 User's Manual
61
Diagram 5-23: Slip frequency compensation
Code
Name
Description
Factory setting
C-1
Over-load & over-heat
protection mode
0: Lock the output
1: Limit-current running(Alarm)
0
This parameter is used to control how the inverter is protected from overload/overheat.
0: Stop output immediately.
When there is overload/overheat, the inverter will stop output immediately
and the motor will shutdown naturally.
1: Limit current (with warning).
When there is overload/overheat, the inverter will still work but in a
limited way. This means that the inverter may decrease the output frequency to lower the current of the load,
and send out warning signal at the same time.
Remark
●
Limit current mode is a protection measure of the inverter when there is overload/overheat, you can't set
a current level for this function.
●
Even in limit current mode, the inverter will shut down when the temperature of the internal modules
overheat.
Code
Name
Description
Factory setting
C-2
Motor over-load
protection
50~110%
110
This parameter is used to control the sensitivity of the thermal relay protection for the motor in the inverter.
When rated current of the load motor is not matching that of the inverter, you can use this parameter to
provide appropriate thermal protection for the load motor. Electrical thermal relay protection is shown as
diagram 5-24.
Diagram 5-24: Electrical thermal relay protection
Default overload value of the inverter is set as:
