MITSUBISHI ELECTRIC FR-S520E - Manual (Page 108)

98
Restart operation parameters
REMARKS
•When the start signal is turned off during power failure and power is restored
Without speed search (H6=1): Decelerates to stop after running in the same direction before
power failure. Note that the motor will coast if the start signal
is turned off during restart operation.
If the start signal turns on upon power restoration, the inverter
starts at the starting frequency (Pr. 13). Keep the starting
signal on during power failure.
With speed search (H6=0,10): The motor will coast.
•With speed search (H6=0,10)
•It will start at the starting frequency (Pr.13) when the speed search is less than 10Hz.
•Restart operation is also performed after the inverter reset and retry reset.
•The motor starts at the starting frequency when an instantaneous power failure occurs
during restart voltage cushion time.
•When the special motor is used, speed search can not be performed, the motor may start at
the starting frequency.
•When speed search is selected (H6=0), automatic restart operation at a start is first
performed after powering on and normal restart is performed thereafter.
When speed search at starting (H6=10) is selected, restart operation is performed at each
starting.
There is delay time (Pr. 57 setting + speed search time) until frequency is output after the
start command is input during restart operation.
•If two or more motors are connected to one inverter, speed search is not performed properly.
Select without speed search (H6=1)
•The SU and FU signals are not output during a restart. They are output after the restart
cushion time has elapsed.
CAUTION
For the restart after instantaneous power failure operation without speed
search (H6=1), the state (output frequency, rotation direction) before an
instantaneous power failure cannot be stored in memory if the instantaneous
power failure time is 0.2s or longer (changes according to the motor load
condition) and the inverter restarts at the starting frequency (Pr.13).
CAUTION
When automatic restart after instantaneous power failure has been
selected, the motor and machine will start suddenly (after the restart
coasting 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, apply in easily visible places the CAUTION stickers supplied to the
instruction manual (basic).
The motor is coasted to a stop as soon as you turn off the start signal or
press the during the restart cushion time after instantaneous power
failure.
♦Related parameters♦
•Retry reset ⇒ Pr.66 to Pr.69 (retry function) (Refer to page 105.)
STOP
RESET