Power Failure Time Deceleration-To-Stop Function - Mitsubishi Electric 800 Series Instruction Manual

(A) Application parameters
5.14.16

Power failure time deceleration-to-stop function

This is a function to decelerate the motor to a stop when an instantaneous power failure or undervoltage occurs.
Pr. Name
261 Power failure stop
A730 selection
262 Subtracted frequency at
A731 deceleration start
263 Subtraction starting
A732 frequency
264 Power-failure
A733 deceleration time 1
265 Power-failure
A734 deceleration time 2
Power failure
266
deceleration time
A735
switchover frequency
294 UV avoidance voltage
A785 gain
668 Power failure stop
A786 frequency gain
Power failure stop
606
external signal input
T722
selection
Connection and parameter setting
Power supply
Remove the jumper
Connect terminals
R1/L11 and P/+
and terminals
S1/L21 and N/-.
• For the standard model, remove the jumpers between terminals R/L1 and R1/L11 and terminals S/L2 and S1/L21, and
connect terminals R1/L11 and P/+ and terminals S1/L21 and N/-.
• If an undervoltage, power failure or input phase loss occurs when Pr.261 Power failure stop selection  "0", the motor
decelerates to a stop.
526
PARAMETERS
Initial value
0
3 Hz
60 Hz
5 s
9999
60 Hz
100%
100%
1
Inverter
R/L1
S/L2
Power supply
T/L3
R1/L11
Remove the jumper
S1/L21
P/+
N/-
Connect terminals
R1/L11 and P/+
Standard models
and terminals
S1/L21 and N/-.
Setting
range
0 Power failure time deceleration-to-stop function disabled
Power failure time deceleration-to-stop function enabled
1, 2, 11, 12,
Select action at an undervoltage or when an power failure
21, 22
occurs.
Normally, the motor runs at the initial value as it is. However,
0 to 20 Hz adjust to suit the size of the load specification (moment of
inertia, torque).
When output frequency  Pr.263
Output frequency - deceleration from Pr.262
0 to 590 Hz
When output frequency  Pr.263
Deceleration from output frequency
9999 The motor decelerates from the "output frequency - Pr.262".
Set the slope applicable from the deceleration start to the
0 to 3600
Pr.266 set frequency.
Set the slope applicable for the frequency range starting at
0 to 3600
Pr.266 and downward.
9999 Same as Pr.264.
Set the frequency at which the slope during deceleration
0 to 590 Hz
switches from the Pr.264 setting to the Pr.265 setting.
Adjust the response at undervoltage avoidance operation.
0 to 200% Setting a large value improves the response to changes in
the bus voltage.
Adjust the response level for the operation where the
0 to 200%
deceleration time is automatically adjusted.
0 Normally open input (NO contact input specification)
1 Normally closed input (NC contact input specification)
Converter unit
R/L1
S/L2
T/L3
R1/L11
S1/L21
Description
Keep the jumpers between
terminals R1/L11 and S1/L21
connected.
Inverter
P/+ P/+
N/- N/-
R1/L11
S1/L21
RDA MRS(X10)
RSO RES
PWF X48
SE SD
Separated converter type
U
V M
W