161
Operation selection at power failure and instantaneous power failure
4.13 Operation selection at power failure and instantaneous power
failure
4.13.1 Automatic restart after instantaneous power failure/flying start under general-purpose
motor control
(Pr. 30, Pr. 57, Pr. 58, Pr. 96, Pr. 162, Pr. 165, Pr. 298, Pr. 299, Pr. 611)
<V/F><GP MFVC>
Purpose
Parameter that should be Set
Refer to Page
At instantaneous power failure
occurrence, restart inverter without
stopping motor (general-purpose
motor control)
Automatic restart operation
after instantaneous power
failure/flying start
Pr. 30, Pr. 57, Pr. 58, Pr. 96,
Pr. 162, Pr. 165, Pr. 298, Pr. 299,
Pr. 611
At instantaneous power failure
occurrence, restart inverter without
stopping motor (IPM motor control)
Automatic restart operation
after instantaneous power
failure / flying start
Pr. 57, Pr. 162, Pr. 611
When undervoltage or a power
failure occurs, the inverter can be
decelerated to a stop.
Power failure-time
deceleration-to-stop
function
Pr. 261
You can restart the inverter without stopping the motor in the following cases:
When power comes back ON after an instantaneous power failure
When motor is coasting at start
Parameter
Number
Name
Initial Value Setting Range
Description
30
Regenerative function
selection
0
0, 1
The motor starts at the starting frequency when MRS (X10)
turns ON then OFF
2
Restart operation is performed when MRS (X10) turns ON
then OFF
57
Restart coasting time
9999
0
1.5K or lower ... 1s
2.2K to 7.5K .... 2s
11K and 15K.... 3s
The above times are coasting time.
0.1 to 5s
Waiting time for inverter-triggered restart after an
instantaneous power failure.
9999
No restart
58
Restart cushion time
1s
0 to 60s
Voltage starting time at restart.
96
Auto tuning setting/status
0
0
Offline auto tuning is not performed
11
For General-purpose magnetic flux vector control
Offline auto tuning is performed without motor running (motor
constants (R1) only)
21
Offline auto tuning (tuning performed without motor running)
for V/F control and automatic restart after instantaneous
power failure (with frequency search)
162
Automatic restart after
instantaneous power
failure selection
1
0
Frequency search only performed at the first start
1
Reduced voltage start only performed at the first start (no
frequency search)
10
Frequency search at every start
11
Reduced voltage start at every start (no frequency search)
165
Stall prevention operation
level for restart
120%
0 to 150%
Considers the rated inverter current as 100% and sets the
stall prevention operation level during restart operation.
298
Frequency search gain
9999
0 to 32767
When offline auto tuning is performed under V/F control,
frequency search gain necessary for frequency search for
automatic restart after instantaneous power failure is set as
well as the motor constants (R1).
9999
Uses the Mitsubishi motor (SF-JR, SF-HR, SF-JRCA, SF-
HRCA) constants
299
Rotation direction
detection selection at
restarting
0
0
Without rotation direction detection
1
With rotation direction detection
9999
When
Pr. 78
= 0,
With rotation direction detection
When
Pr. 78
= 1, 2
Without rotation direction detection
611
Acceleration time at a
restart
9999
0 to 3600s
Acceleration time to reach
Pr.20 Acceleration/deceleration
reference frequency
at a restart.
9999
Acceleration time for restart is the normal acceleration time
(e.g.
Pr. 7
)
The above parameters can be set when
Pr. 160 Extended function display selection
= "0".
V/F
V/F
V/F
GP
MFVC
GP
MFVC
GP
MFVC
Summary of Contents for FR-F700PJ Series
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