Power Failure Time Deceleration-To-Stop Function - Mitsubishi Electric FR-F820-00077 Instruction Manual

(A) Application parameters
5.11.14

Power failure time deceleration-to-stop function

At instantaneous power failure or undervoltage, the motor can be decelerated to a stop or to the set
frequency for the re-acceleration.
Pr.
261
A730
262
A731
263
A732
264
A733
265
A734
266
A735
294
A785
668
A786
606
T722
Connection and parameter setting
Remove the jumper
Connect terminals
R1/L11 and P/+
S1/L21 and N/–.
5 - 432
Name
Power failure stop
selection
Subtracted frequency at
deceleration start
Subtraction starting
frequency
Power-failure deceleration
time 1
Power-failure deceleration
time 2
Power failure deceleration
time switchover frequency
UV avoidance voltage gain
Power failure stop
frequency gain
Power failure stop external
signal input selection
Power supply
and terminals
Initial value
Setting
Description
range
FM CA
Power failure time deceleration-to-stop function
0
disabled
Power failure time deceleration-to-stop function
0
enabled
1, 2, 11, 12,
21, 22
Select action at an undervoltage or when a power
failure occurs.
Normally, the motor runs at the initial value as it is.
3 Hz 0 to 20 Hz However, adjust to suit the size of the load
specification (moment of inertia, torque).
When output frequency ≥ Pr. 263
The motor decelerates from the "output frequency –
Pr. 262"
0 to 590 Hz
When output frequency < Pr. 263
60 Hz 50 Hz
Deceleration from the output frequency
The motor decelerates from the "output frequency -
9999
Pr. 262".
Set the slope applicable from the deceleration start to
5 s
0 to 3600
the Pr. 266 set frequency.
Set the slope applicable for the frequency range
0 to 3600
starting at Pr. 266 and downward.
9999
9999 Same as Pr. 264.
Set the frequency at which the slope during
60 Hz 50 Hz 0 to 590 Hz deceleration switches from the Pr. 264 setting to the
Pr. 265 setting.
Adjust the response at undervoltage avoidance
100% 0 to 200% operation. Setting a large value improves the
response to changes in the bus voltage.
Adjust the response level for the operation where the
100% 0 to 200%
deceleration time is automatically adjusted.
0 Normally open input (NO contact input specification)
1
Normally closed input (NC contact input
1
specification)
Fig. 5-212:
Connection of the standard model
Inverter
Parameters
I001172E