Mitsubishi Electronics FR-S500 Retry reset ⇒ Pr.66 to Pr.69 retry function Refer to

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 failure.

RESETSTOP during the restart cushion time after instantaneous power

♦Related parameters♦

•Retry reset ⇒ Pr.66 to Pr.69 (retry function) (Refer to page 101.)

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