Mitsubishi Electric FR-A700 EC, Instruction Manual

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Parameter Operation selection at power failure
FR-A700 EC 6 - 343
●
Encoder detection frequency search
When "2 or 12" is set in Pr. 162 under encoder feedback control, the motor starts at the
motor speed and in the rotation direction detected from the encoder at power restoration.
Encoder detection frequency search is performed regardless of the Pr. 162 setting under
vector control.
The Pr. 58 and Pr. 299 settings are invalid for encoder detection frequency search.
The output shut off timing differs according to the load condition.
●
Restart operation at every start
When Pr. 162 = "10, 11 or 12", automatic restart operation is also performed every start, in addi-
tion to the automatic restart after instantaneous power failure. When Pr. 162 = "0" or "2",auto-
matic restart operation is performed at the first start after power supply-on, but the inverter starts
at the starting frequency at the second time or later.
Fig. 6-161:
Encoder detection frequency search
I001605E
NOTE
When encoder feedback control is invalid, setting "2 or 12" in Pr. 162 enables frequency
search.
Power
supply
(L1, L2, L3)
Motor
speed
[r/min]
Output
frequency [Hz]/
Output
voltage [V]
Power failure
Coasting time
Pr. 57
Acceleration time
Pr. 611