Manualsbrain.com
  1. マニュアル
  2. ブランド
  3. Mitsubishi Electronics
  4. FR-D740-012
  5. ユーザーズマニュアル

Mitsubishi Electronics FR-D740-012 ユーザーズマニュアル

ダウンロード
ページ / 294
136
Operation selection at power failure and instantaneous power failure
4.12 Operation selection at power failure and instantaneous power 
failure
4.12.1 Automatic restart after instantaneous power failure/flying start 
(Pr. 30, Pr. 57, Pr. 58, Pr. 96, Pr. 162, Pr. 165, Pr. 298, Pr. 299, Pr. 611) 
Purpose
Parameter that should be Set
Refer to Page
At instantaneous power failure 
occurrence, restart inverter without 
stopping motor
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
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
FR-D720-070 or less, FR-D740-036 or less, 
FR-D720S-070 or less.....................................................1s
FR-D720-100 or more, FR-D740-050 or more, 
FR-D720S-100 ................................................................2s
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) (Refer to page 75)
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
With frequency search
1
Without frequency search (reduced voltage system)
10
Frequency search at every start
11
Reduced voltage at every start
165
Stall prevention operation 
level for restart
150%
0 to 200%
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". (Refer to page 162)