Mitsubishi Electric FR-A700 Instruction Manual page 525

Parameter
NOTES The CS signal is assigned to the terminal CS in the initial setting. By setting "6" in any of
Pr. 178 to Pr. 189 "Input terminal function selection", you can assign the CS signal to the
other terminal.
Changing the terminal assignment using Pr. 178 to Pr. 189 "Input terminal function selec-
tion" may affect the other functions. Please make setting after confirming the function of
each terminal.
When automatic restart operation is selected, under voltage protection (E.UVT) and instan-
taneous power failure protection (E.IPF) among the alarm output signals will not be provided
at occurrence of an instantaneous power failure.
The SU and FU signals are not output during a restart. They are output after the restart
cushion time has elapsed.
Automatic restart operation will also be performed after a reset made by an inverter reset is
canceled or when a retry is made by the retry function.
Automatic restart after instantaneous power failure function is invalid when load torque high
speed frequency control (Pr. 270 = "2, 3") is set.
b
CAUTION:
Before activating the automatic restart after power failure function please make sure
that this mode is supported for the drive and permitted for your configuration.
When automatic restart after instantaneous power failure has been selected, the motor
and machine will start suddenly (after the reset time has elapsed) after occurrence of
an instantaneous power failure. Stay away from the motor and machine. When you
have selected automatic restart after instantaneous power failure function, apply
CAUTION seals in easily visible places.
Provide mechanical interlocks for MC2 and MC3. The inverter will be damaged if the
power supply is input to the inverter output section.
Before switching power to a motor that is already rotating it is essential to check that
activating the inverter with the selected control method will generate the same phase
sequence as that of the rotating motor. If this is not the case the motor could be
reversed unexpectedly, which can damage or even destroy the motor.
FR-A700 EC
Operation selection at power failure
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