4-214
Figure 4.4.81 Operation for reference frequency loss
11- 43
Hold Frequency at Start
Range
【
0.0~599.0】Hz
11- 44
Frequency Hold Time at Start
Range
【
0.0~10.0】Sec
11- 45
Hold Frequency at Stop
Range
【
0.0~599.0】Hz
11- 46
Frequency Hold Time at Stop
Range
【
0.0~10.0】Sec
The hold function is used to temporarily hold the reference frequency in order to prevent stalling the motor
or preventing an over current condition during starting or stopping due to load conditions.
During start the inverter will operate at the hold frequency at start for the time specified in the parameter
11-44 in order to establish the magnetic flux.
Note: The acceleration of deceleration time does not include the start and stop hold time. Refer to the Fig.
4.4.82.
Figure 4.4.82 Reserved function
When the inverter is in stop mode, this function can also be used to prevent wind milling. In addition, it can
be used for the purpose of braking using the motor to consume the braking energy resulting in a better
controlled stop. Refer to the DC brake parameter 07-16 for DC braking during start.
Notes:
- The hold function at start is inactive when the hold frequency at start (11-43) is set to a value less than
Fmin (01-08).
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