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Note:
Imax: Maximum current
Is1: Overflow current
6.21 Number of starts protection
The motor is easy to be damaged due to frequent starting and cutting in a short time.When
the remaining starting number of the motor is 0 within the set time, the protector sends an alarm
signal. If the starting command is issued again at this time, the protector will release and allow to
start again after the cooling time.
Example: Set the time limit of 1 hour to allow 3 starts.
Figure above: It has been started for 3 times between 13:00 and 14:00, and there is no number of
starts at the fourth time, so the fourth time fails.
Figure below: Before the fourth start, the remaining number of starts is restored to 1, so the fourth
start is successful.
6.22 Running time alarm
When the accumulated running time of the motor exceeds the set value, the protector will
send an alarm signal to remind the staff to overhaul and maintain the motor.
6.23 Fault frequency alarm
When the cumulative number of protection trips exceeds the set value, the protector will send
an alarm signal.