YASKAWA FSDrive-MV1000 Parameter Manual page 226

2.9 n: Special Adjustments
Transferring from Drive to Commercial Power Supply
n
When the Run command is turned on while the Synchronous Transfer command is input, or if the Synchronous Transfer
command is turned on during operation, the speed (frequency) reference is automatically changed to start acceleration or
deceleration until the frequency setting of the commercial power supply is reached. After the drive completes
accelerating or decelerating, the drive output is automatically matched with the amplitude and phase of the commercial
power supply. After the drive output is synchronized with the commercial power supply, the commercial power supply
side breaker is closed and the drive and commercial power supply operate in parallel. Then, the drive secondary side
breaker is opened to complete the transfer.
commercial power supply.
Figure 2.82
Close Command for Drive Secondary
Side Breaker (DO:41H)
Close Signal for Drive Secondary
Side Breaker (DI:83H)
Run Command On (Input)
Close Command for Commercial
Power Supply Side Breaker (DO:40H)
Close Signal for Commercial
Power Supply Side Breaker (DI:82H)
Completion Signal for
Synchronous Transfer (DO:42H)
Transferring from Commercial Power Supply to Drive
n
If the Synchronous Transfer command and the Run command is turned on while the motor is driven by the commercial
power supply, the speed (frequency) reference in the drive is automatically changed to start acceleration until the
frequency setting of the commercial power supply is reached. After the drive completes accelerating, the drive output is
automatically matched with the amplitude and phase of the commercial power supply. After the drive output is
synchronized with the commercial power supply, the drive secondary side breaker is closed and the drive and
commercial power supply operate in parallel. And then, the commercial power supply side breaker is opened to complete
the transfer. Figure 2.83
Figure 2.83
Close Command for Commercial
Power Supply Side Breaker
Close Signal for Commercial
Power Supply Side Breaker
Secondary Side Breaker
Secondary Side Breaker
226
Figure 2.82
Synchronous Transfer
Command (DI:80H)
During Synchronous
Transfer Control
Baseblock
Figure 2.82 Transfer from Drive to Commercial Power Supply Time Chart
shows the time chart for the transfer from the commercial power supply to the drive.
Synchronous Transfer
Command (DI:81H)
(DO:40H)
(DI:82H)
Run Command On (Input)
During Synchronous
Transfer Control
Close Command for Drive
(DO:41H)
Close Signal for Drive
(DI:83H)
Completion Signal for
Synchronous Transfer (DO:42H)
Figure 2.83 Transfer from Commercial Power Supply to Drive Time Chart
shows the time chart for the transfer from the drive to the
During acceleration
Synchronization
During acceleration
Synchronization
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide