Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

Страница: 284 / 512

Operation selection at power failure Parameter
6 - 134
6.11.2 Power failure-time deceleration-to-stop function (Pr. 261)
When a power failure or under voltage occurs, the inverter can be decelerated to a stop or can
be decelerated and re-accelerated to the set frequency.
The above parameter can be set when Pr. 160 = 0.
Parameter setting
When Pr. 261 is set to "1" or "2", the inverter decelerates to a stop if an undervoltage or power
failure occurs.
Operation outline of deceleration to stop at power failure
When undervoltage or power failure has occurred, the output frequency is decreased and con-
trolled so that the converter circuit (DC bus) voltage is constant and decreased to 0Hz to stop.
Pr.
No.
Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
261
Power failure stop
selection
0
0
Coasting to stop when under voltage or
power failure occurs, the inverter output
is shut off.
57
190/192/
197
Restart coasting
time
Output terminal
function selection 6.11.1
6.9.5
1
When under voltage or a power failure
occurs, the inverter can be decelerated to
a stop.
2
When under voltage or a power failure
occurs, the inverter can be decelerated to
a stop.
If power is restored during a power fail-
ure, the inverter accelerates again.
I001814E
Fig. 6-71: Parameters for stop selection at power failure
Output fre-
quency
Time
Power
ON OFF