Mitsubishi Electric FR-A700 Technical Manual page 339

2.16.2 Power failure stop mode [Pr. 261, 262 to 266
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. ] Name
Power failure stop
261
selection
Subtracted frequency at
262
deceleration start
Subtraction starting
263
frequency
Power-failure deceleration
264
time 1
Power-failure deceleration
265
time 2
Power failure deceleration
266
time switchover frequency
294 UV avoidance voltage gain 100% 0 to 200%
* The setting range is 0 to 3600 and the setting increments is 0.1s when [Pr. 21 Acceleration/deceleration time increments = 0] (initial
value) and the setting range is 0 to 360s and the setting increments is 0.01s when [Pr. 21 = 1].
(*[Pr. 262 to 266, 294] are not available for
Initial Setting
Value Range
Coasts to stop
0 When undervoltage or power failure occurs, the
inverter output is shut off.
Without under
1 voltage
avoidance
With under
0 11 voltage
avoidance
Without under
2 voltage
avoidance
With under
12 voltage
avoidance
Normally operation can be performed with the initial
value unchanged. But adjust the frequency according
3Hz 0 to 20Hz
to the magnitude of the load specifications (moment of
inertia, torque).
When output frequency ≥ [Pr. 263]
Decelerate from the speed obtained from output
0 to
frequency minus [Pr. 262].
120Hz
When output frequency < [Pr. 263]
60Hz
Decelerate from output frequency
Decelerate from the speed obtained from output frequency
9999
minus [Pr. 262].
0 to 3600/
Set a deceleration slope down to the frequency set in
5s
[Pr. 266].
360s
*
0 to 3600/
Set a deceleration slope below the frequency set in
[Pr. 266].
9999
360s
*
9999 Same slope as in [Pr. 264]
Set the frequency at which the deceleration slope is
0 to
60Hz switched from the [Pr. 264] setting to the [Pr. 265]
400Hz
setting.
Adjusts the response level during undervoltage
avoidance operation. A larger setting will improve
responsiveness to the bus voltage change. Since the
regeneration amount is large when the inertia is large,
decrease the setting value.
373
, Pr. 294 ] common
* *
(common)
(*[Pr. 294] is not available for
Description
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.
PARAMETER
.)
F700
.)
E700 D700
Available Inverters
E700
A700 F700
D700
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