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Upon closed loop vector control, when the motor speed is less than the rotating speed corresponding to
the zero servo initial frequency P05.19, if the zero servo enabled is always enabled or the conditions are
enabled and the terminal is enabled, it enters into the zero servo locking status. At this time, the position
of the motor in stop status will be maintained. The zero servo initial frequency is the condition for the drive
to enter zero servo status. If P05.19 is too large, it may cause over-current fault. If adjustment is needed,
you may increase/decrease the leave-factory value. Zero servo gain P05.18 is the parameter to adjust
the zero servo retentivity. When this value is increased, the zero servo force can be increased. However,
if it is too large, it may cause vibration of the drive.
Note
For the zero servo function enabled by function code P05.17, you may exit the zero servo by setting the
frequency higher than the zero servo initial frequency. When the zero servo function of P05.17 is set to be 2,
for the zero servo function enabled by No.54 function of terminal Xi (zero servo enabling terminal), when the
terminal is disabled, it exits from the zero servo mode. It doesn’t matter whether the set frequency is higher
than the zero servo initial frequency P05.19.
Torque control parameters (Group P06) (please see the full user manual)
4.4 Start and stop control parameters (Group P08)
After the drive receives the stop command it begins to decelerate to the frequency and lasts more than
P08.08 ,then stop the output.
0: Speed reference after ramp
This is the only one detection mode under the V/F mode.
1: Speed detection value
For open-loop vector, it is speed analytical value. For closed-loop vector, it is PG feedback value.
During the deceleration, when it decelerates to the stop DWELL frequency set by P08.10, continues to
decelerate after the retention time set by P08.11 for keeping the frequency.
Note: P08.08 stop frequency detection retention time is invalid for the V/F control mode and the stop
speed detection mode is valid only when it is the speed detection value (P08.09=1).
Deceleration time for emergency stop
0.00~100.00s(0.00s)
P08.23
Stop (dwell) frequency retention time
0.00~10.00s (0.00s)
P08.11
Stop (dwell) frequency
0.00~150.00Hz (02.00Hz)
P08.10
Stop speed detection mode
0~1 (0)
P08.09
Stop frequency detection retention time
0.00~10.00s (0.00s)
P08.08
Stop frequency detection
0.00~150.00Hz (0.50Hz)
P08.07
Zero servo initial frequency
0.00~10.00Hz (0.20Hz)
P05.19
