Mitsubishi Electric FR-A820-00046 Instruction Manual page 749

Parameters
Adjustment of restart coasting time (Pr. 57)
● Coasting time is the time from the motor speed detection to the restart operation start.
● To enable restart operation, set "0" to Pr. 57 "Restart coasting time". If "0" is set to Pr. 57, the coasting
time is automatically set to the following value. Generally, this setting does not interfere with
inverter operation.
00046 00077
(0.4K) (0.75K)
00023 00038
(0.4K) (0.75K)
Other
0
than 3, 0.5 0.5
(SLD)
13
1 (LD)
3, 13 1 1
Other
than 3, 0.5 0.5
2 (ND)
13
3, 13 1 1
Other
than 3, 0.5 0.5
3 (HD)
13
3, 13 1 1
Tab. 5-245: Restart waiting time
● Inverter operation is sometimes hindered by the size of the moment of inertia (J) of the load or
running frequency. Adjust this coasting time within the range 0.1 s to 30 s to match the load
specification.
● Set the waiting time when the sine wave filter is used (Pr. 72 "PWM frequency selection" = "25")
to 3 s or more.
Restart cushion time (Pr. 58)
● The cushion time is the time takes to raise the voltage to the level required for the specified speed
after the motor speed detection (output frequency before instantaneous power failure when
Pr. 162 = "1 or 11").
● Normally, the motor runs at the initial value as it is. However, adjust to suit the moment of inertia
(J) of the load or the size of the torque.
● Pr. 58 is invalid under Real sensorless vector control or vector control.
FR-A800
00105 00167 00250 00340
(1.5K) (2.2K) (3.7K) (5.5K)
00052 00083 00126 00170
(1.5K) (2.2K) (3.7K) (5.5K)
1 1 1 1
2 2 2 2
0.5 1 1 1
1 2 2 2
0.5 0.5 1 1
1 1 2 2
200 V class FR-A820-
00490 00630 00770 00930
(7.5K) (11K) (15K) (18.5K)
400 V class FR-A840-
00250 00310 00380 00470
(7.5K) (11K) (15K) (18.5K)
3 3 3 3
3 3 3 3
1 3 3 3
2 3 3 3
1 1 3 3
2 2 3 3
(A) Application parameters
01250 01540 01870 02330
(22K) (30K) (37K) (45K)
00620 00770 00930 01160
(22K) (30K) (37K) (45K)
3 3 3 3
3 3 3 3
3 3 3 3
3 3 3 3
3 3 3 3
3 3 3 3
03160 03800 04750
(55K) (75K) (90K)
02600
01800 02160
(90K) or
(55K) (75K)
higher
5 5 5
5 5 5
3 5 5
3 5 5
3 3 5
3 3 5
5 - 569