Mitsubishi Electric 800 Series Instruction Manual (Function page 447

• The Pr.299 Rotation direction detection selection at restarting setting is invalid by encoder detection frequency
search.
V/F control, Advanced magnetic flux vector control
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
• Under 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
• During Real sensorless vector control, the operation is the same as one when Pr.162 = "0 or 10".
 Restart at every start (Pr.162 = "10 or 11")
• When "10 or 11" is set in Pr.162, a restart operation is performed at each start and automatic restart after instantaneous
power failure (after the time period set in Pr.57 elapsed). When "0 (initial value) or 1" 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.
Pr.30 setting
2
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 the MRS (X10) signal.
• Operation is selectable as shown in the table above when Pr.162 Automatic restart after instantaneous power failure
selection = "0 or 1". When Pr.162 Automatic restart after instantaneous power failure selection = "10 or 11" (automatic
restart operation at each start), a restart operation is performed regardless of the setting of Pr.30 Regenerative function
selection.
• Set "24" in any parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the output stop (MRS) signal
to the input terminal, and "10" to assign the Inverter operation enable (X10) signal.
 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.
446
16. (A) Application Parameters
16.7 Automatic restart after instantaneous power failure / flying start with an induction motor
Instantaneous (power failure) time
Acceleration time
at a restart (Pr.611)
Restart cushion time (Pr.58)
Operation after restoration from output shutoff by the MRS (X10) signal
Restart operation (starting from the coasting speed)
Starting from Pr.13 Starting frequency.
page 495.