2.9 n: Special Adjustments
226 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
n Transferring from Drive to Commercial Power Supply
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. Figure 2.82 shows the time chart for the transfer from the drive to the
commercial power supply.
Figure 2. 82
Figure 2.82 Transfer from Drive to Commercial Power Supply Time Chart
n Transferring from Commercial Power Supply to Drive
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 shows the time chart for the transfer from the commercial power supply to the drive.
Figure 2. 83
Figure 2.83 Transfer from Commercial Power Supply to Drive Time Chart
Synchronous Transfer
Command
(DI:80H)
Close Command for Drive Secondary
Side Breaker
(DO:41H)
Close Signal for Drive Secondary
Side Breaker
(DI:83H)
Run Command On (Input)
During Synchronous
Transfer Control
Close Command for Commercial
Power Supply Side Breaker
(DO:40H)
Close Signal for Commercial
Power Supply Side Breaker
(DI:82H)
Baseblock
During acceleration
Completion Signal for
Synchronous Transfer
(DO:42H)
Synchronization
During acceleration
Synchronous Transfer
Command
(
DI:81H)
Close Command for Commercial
Power Supply Side Breaker
(
DO:40H)
Close Signal for Commercial
Power Supply Side Breaker
(
DI:82H)
Run Command On (Input)
During Synchronous
Transfer Control
Close Command for Drive
Secondary Side Breaker
(DO:41H)
Close Signal for Drive
Secondary Side Breaker
(
DI:83H)
Completion Signal for
Synchronous Transfer
(DO:42H)
Synchronization
MV1000ParameterGuide_E_conditional.book 226 ページ ２０１３年１０月１１日 金曜日 午後８時１８分
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