Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 603

• By encoder detection frequency search, the Pr.299 Rotation direction detection selection at restarting setting are
invalid.
Power supply
(R/L1, S/L2, T/L3)
Motor speed N
(r/min)
Inverter output
frequency f(Hz)
Output voltage E(V)
Coasting
time (Pr.57)
∗ The output shut off timing differs according to the load condition.
NOTE
• When "2 or 12" are set to Pr.162 when encoder feedback control is invalid, the automatic restart is with a frequency search
(Pr.162 = "0 or 10").
• In Vector control, encoder detection frequency search is used regardless of the Pr.162 setting. The Pr.58 and Pr.299 settings
are invalid at this time.
• For the encoder feedback control, refer to
 Restart at every start (Pr.162 = "10 to 13")
• When "10 to 13" is set in Pr.162, a restart operation is performed at each start and automatic restart after instantaneous
power failure (Pr.57 start after the reset time has elapsed). When "0 (initial value) to 3" is set in Pr.162, a restart operation
is performed at the first start after a power-ON, and from the second power-ON onwards, a start from the starting frequency
is performed.
 Automatic restart operation of the MRS (X10) signal
• The restart operation after restoration from output shutoff by the MRS (X10) signal is as shown in the following table
according to the Pr.30 setting.
2, 10, 11, 102, 110, 111
Other than the above
NOTE
• When output is shut off using safety stop function (terminals S1 and S2), the inverter restarts in the same way as when output
is shut off by MRS (X10) signal.
 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 (unit: s). Generally, this setting does not interfere with inverter operation.
00046
(0.4K)
Pr.570 Pr.162
setting setting
00023
(0.4K)
Other
0.5
0( SLD)
than 3, 13
1 (LD)
3, 13 1
Other
0.5
than 3, 13
2 (ND)
3, 13 1
Other
0.5
than 3, 13
3 (HD)
3, 13 1
602
5. PARAMETERS
5.14 (A) Application parameters
Instantaneous (power failure) time
∗
Acceleration time
at a restart (Pr.611)
Restart cushion time (Pr.58)
Pr.30 setting
00077 00105 00167 00250
(0.75K) (1.5K) (2.2K) (3.7K)
00038 00052 00083 00126
(0.75K) (1.5K) (2.2K) (3.7K)
0.5 1 1 1
1 2 2 2
0.5 0.5 1 1
1 1 2 2
0.5 0.5 0.5 1
1 1 1 2
page 700.
Operation after restoration from output shutoff by the MRS (X10) signal
Restart operation (starting from the coasting speed)
Starting from Pr.13 Starting frequency.
200 V class FR-A820-[]
00340 00490 00630 00770 00930
(5.5K) (7.5K) (11K) (15K) (18.5K)
400 V class: FR-A840-[]
00170 00250 00310 00380 00470
(5.5K) (7.5K) (11K) (15K) (18.5K)
1 3 3 3 3
2 3 3 3 3
1 1 3 3 3
2 2 3 3 3
1 1 1 3 3
2 2 2 3 3
01250 01540 01870 02330 03160
(22K) (30K) (37K) (45K) (55K)
00620 00770 00930 01160 01800
(22K) (30K) (37K) (45K) (55K)
3 3 3 3 5
3 3 3 3 5
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
03800 04750
(75K) (90K)
02600
02160
(90K) or
(75K)
higher
5 5
5 5
5 5
5 5
3 5
3 5