Operation At Instantaneous Power Failure - Mitsubishi Electric FR-F700 Manual

Operation at instantaneous
Pr.
261 to 266
power failure
Pr.261 Power failure stop selection
Pr.262 Subtracted frequency at deceleration start
Pr.263 Subtraction starting frequency
Pr.265 Power-failure deceleration time 2
Pr.266 Power failure deceleration time switchover frequency
When a power failure or undervoltage occurs, the inverter can
be decelerated to a stop or can be decelerated and re-
accelerated to the set frequency.
Pr.
Setting Range
Number
0 (initial value)
1
261
2
262 0 to 20Hz
0 to 120Hz
263
9999
264 0 to 3600/ 360s
0 to 3600/ 360s
265
9999
266 0 to 400Hz
* When the setting of Pr. 21 Acceleration/deceleration time increments is "0"
(initial value), the setting range is "0 to 3600s" and the setting increments
are "0.1s", and when the setting is "1", the setting range is "0 to 360s" and
the setting increments are "0.01s"
Power supply
Output
Subtracted
frequency
frequency at
Power-failure deceleration start
deceleration
Pr.262
time switchover
frequency
Pr.266
43
indicates simple mode parameters and
Pr.
Pr.264 Power-failure deceleration time 1
Description
Coasting to stop
When undervoltage or power failure
occurs, the inverter output is shut off.
When undervoltage or a power failure
occurs, the inverter can be decelerated
to a stop.
When undervoltage or a power failure
occurs, the inverter can be decelerated
to a stop.
If power is restored during a power
failure, the inverter accelerates again.
Normally operation can be performed
with the initial value unchanged. But
adjust the frequency according to the
magnitude of the load specifications
(moment of inertia, torque).
When output frequency ≥ Pr. 263
Decelerate from the speed obtained
from output frequency minus Pr. 262.
When output frequency < Pr. 263
Decelerate from output frequency
Decelerate from the speed obtained
from output frequency minus Pr. 262.
Set a deceleration slope down to the
*
frequency set in Pr. 266.
Set a deceleration slope below the
*
frequency set in Pr. 266.
Same slope as in Pr. 264
Set the frequency at which the
deceleration slope is switched from the
Pr. 264 setting to the Pr. 265 setting.
Pr.264
Power-failure
deceleration time 1
Pr.265
Power-failure
deceleration
time 2
Time
indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.
(1) Power failure stop mode (Pr.261 = "1")
⋅ If power is restored during power failure deceleration,
deceleration to a stop is continued and the inverter remains
stopped.To restart, turn off the start signal once, then turn it
on again.
Pr.261 = 1
During deceleration at
occurrence of power failure
STF
Y46
Turn off STF once to make acceleration again
(2) Instantaneous power
continuation function (Pr.261 = "2")
⋅ When power is restored during deceleration after an
instantaneous power failure, acceleration is made again up
to the set frequency.
⋅ When this function is used in combination with the automatic
restart after instantaneous
deceleration can be made at a power failure and
acceleration can be made again after power restoration.
When power is restored after a stop by deceleration at an
instantaneous power failure, automatic restart operation is
performed if automatic restart after instantaneous power
failure has been selected (Pr. 57 ≠ "9999")
When power is restored during
Pr.261 = 2
deceleration
Power
supply
Output
frequency
During deceleration
at occurrence of
power failure
Y46
Pr.261 = 2, Pr.57 9999
During power failure
Power
supply
Output
frequency
During deceleration
at occurrence of
power failure
Y46
Refer to the section about Pr. 73 and other
Pr.
267
relevant parameters.
Refer to the section about Pr. 52 and other
Pr.
268
relevant parameters.
Parameter for manufacturer setting. Do not set.
Pr.
269
Refer to the section about Pr. 57 and other
Pr.
299
relevant parameters.
Refer to the section about Pr. 117 and
Pr.
331 to 337
other relevant parameters.
During stop at
occurrence of
power failure
Time
failure-time operation
power failure operation,
IPF
Reacceleration
Time
When used with automatic restart
after instantaneous power failure
Automatic restart
after instantaneous
power failure
Time
Reset time + Pr.57