Mitsubishi Electric 800 Series Instruction Manual page 453

NOTE
• This restart method uses the output frequency that was active before the instantaneous power failure stored in memory. If
the instantaneous power failure time is 0.2 s or more, the output frequency can no longer be stored and held in memory,
so the restart is performed from Pr.13 Starting frequency (initial value is 1.5 Hz).
 Restart at every start (Pr.162 ="10 to 13, or 1010 to 1013")
• When "10 to 13, or 1010 to 1013" 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, or 1000 to 1003" 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 MRS (X10) signal
• The restart operation after restoration from output shutoff by the MRS (X10) signal is as shown in the table below according
to the Pr.30 setting.
Pr. 30 setting
10, 110
Other than the above
 Adjustment of restart coasting time (Pr.57)
• Restart coasting time is the time period from the occurrence of instantaneous power failure until the operation is restarted
after power is restored. With frequency search, the motor speed is detected and operation is restarted after the coasting
time.
• 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.
Pr.162 setting
3, 13, 1003, 1
1013
Other than the 0.5
above
• 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.
 Restart cushion time (Pr.58)
• The cushion time is the time taken 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, 11, 1001, or 1011").
• 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.
452
5. PARAMETERS
5.11 (A) Application parameters
Operation after restoration from output shutoff by the
MRS (X10) signal
Restart operation (starting from the coasting speed)
Starting from Pr.13 Starting frequency.
00027 00061 00090
2
1
FR-F860-[]
00170 00320
3
3
00450 00680 01080 or
higher
5
5