Power Failure Time Deceleration-To-Stop Function - Mitsubishi Electric FR-A800 Series Instruction Manual

5.14.17 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.
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.
642
5. PARAMETERS
5.14 (A) Application parameters
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Initial value
Name
FM CA
0
3 Hz
60 Hz 50 Hz
5 s
9999
60 Hz 50 Hz
100%
100%
1
Inverter
R/L1
S/L2
T/L3
R1/L11
S1/L21
P/+
N/-
Standard models
search engine
Setting
range
0 Power failure time deceleration-to-stop function disabled
1, 2, 11, 12, Power failure time deceleration-to-stop function enabled.
21, 22 Select action at an undervoltage or when a power failure 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 the output frequency ≥ the frequency set in Pr.263:
The motor decelerates if the output frequency decreases by the
0 to 590 Hz frequency set in Pr.262.
When the output frequency < the frequency set in Pr.263:
The motor decelerates at frequencies of the output frequency.
9999 The motor decelerates from the output frequency - Pr.262.
Set the slope applicable from the deceleration start to the Pr.266
0 to 3600 s
set frequency.
Set the slope applicable for the frequency range starting at Pr.266
0 to 3600 s
and downward.
9999 Same as Pr.264.
Set the frequency at which the slope during deceleration switches
0 to 590 Hz
from the Pr.264 setting to the Pr.265 setting.
Adjust the response at undervoltage avoidance operation. Setting
0 to 200% a large value improves the response to changes in the bus
voltage.
Adjust the response level for the operation where the deceleration
0 to 200%
time is automatically adjusted.
0 Normally open input (NO contact input specification)
1 Normally closed input (NC contact input specification)
Converter unit
R/L1
Power supply
S/L2
T/L3
Remove the jumper R1/L11
S1/L21
Connect terminals
R1/L11 and P/+
and terminals
S1/L21 and N/-.
Description
Keep the jumpers between
terminals R1/L11 and S1/L21
connected.
Inverter
P/+ P/+
N/- N/-
W
R1/L11
S1/L21
RDA MRS(X10)
RSO RES
PWF X48
SE SD
Separated converter type
U
V M