2.9 n: Special Adjustments
230
YASKAWA ELECTRIC
TOEP C710687 03B FSDrive-MV1000 Parameter Guide
n
n7-63: Phase Synchronous Output Lower Limit
Sets the output lower limit of the control that synchronizes the phases of the commercial power supply voltage and the
drive output voltage. Set as a percentage of the maximum output frequency (E1-04).
If the voltage synchronization does not end, make a large adjustment.
n
n7-64: Power Supply Phase Detection Bias
Sets the bias for detecting the phase of the commercial power supply.
When voltage synchronization ends (when the close command for the commercial power supply side breaker or drive
secondary side breaker is output) and there is a difference in the voltage phase between the drive output and the
commercial power supply, adjust the bias to cancel the difference of the voltage phase, where a positive value advances
the drive phase.
Figure 2.84
Figure 2.84 Phase Adjustment Example (Drive Output is behind the Voltage Phase of the Commercial Power Supply)
n
n7-65: Phase Synchronous Level
Sets the deviation level of the phases that is used to determine whether the phases of the commercial power supply
voltage and the drive output voltage are synchronized.
When voltage synchronization ends (when the Breaker Close command is output) and there is a difference in the voltage
amplitude between the drive output and the commercial power supply, adjust the bias to cancel the difference of the
voltage amplitude, where a positive value increases the drive voltage.
n
n7-76: Power Supply Synchronous Limit Time
Sets the limit time for Synchronous Transfer (from when drive acceleration is completed until the completion signal for
Synchronous Transfer is output).
If the Synchronous Transfer has not ended within the specified time, a fault is detected and the drive output is stopped.
No.
Name
Setting Range
Default
n7-63
Phase Synchronous Output Lower Limit
-20 to 0%
-5%
No.
Name
Setting Range
Default
n7-64
Power Supply Phase Detection Bias
-180.0 to 180.0 deg
0.0 deg
No.
Name
Setting Range
Default
n7-65
Phase Synchronous Level
0.0 to 30.0 deg
3.0 deg
No.
Name
Setting Range
Default
n7-76
Power Supply Synchronous Limit Time
10.0 to 6000.0 s
15.0 s
Set to a positive number to
advance the phase.
Commercial power supply voltage waveform
Drive output voltage waveform
Note: Same as the phase on the commercial power supply.
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