Mitsubishi Electronics FR-F700 Operation at instantaneous, 261 to 266 power failure

Pr.	Operation at instantaneous
	261 to 266 power failure

Pr.261 Power failure stop selection

Pr.262 Subtracted frequency at deceleration start

Pr.263 Subtraction starting frequency Pr.264 Power-failure deceleration time 1 Pr.265 Power-failure deceleration time 2

Pr.266 Power failure deceleration time switchover frequency

When a power failure or undervoltage occurs, the inverter can be decelerated to a stop or can be decelerated and re- accelerated to the set frequency.

Pr.	Setting Range		Description
Number
			Coasting to stop
	0 (initial value)		When undervoltage or power failure
			occurs, the inverter output is shut off.
	1		When undervoltage or a power failure
261			occurs, the inverter can be decelerated
			to a stop.
			When undervoltage or a power failure
			occurs, the inverter can be decelerated
	2		to a stop.
			If power is restored during a power
			failure, the inverter accelerates again.
			Normally operation can be performed
			with the initial value unchanged. But
262	0 to 20Hz		adjust the frequency according to the
			magnitude of the load specifications
			(moment of inertia, torque).
			When output frequency ≥ Pr. 263
			Decelerate from the speed obtained
	0 to 120Hz		from output frequency minus Pr. 262.
263			When output frequency < Pr. 263
			Decelerate from output frequency
	9999		Decelerate from the speed obtained
			from output frequency minus Pr. 262.
264	0 to 3600/ 360s	*	Set a deceleration slope down to the
			frequency set in Pr. 266.
	0 to 3600/ 360s	*	Set a deceleration slope below the
265			frequency set in Pr. 266.
	9999		Same slope as in Pr. 264
266	0 to 400Hz		Set the frequency at which the
			deceleration slope is switched from the
			Pr. 264 setting to the Pr. 265 setting.

*When the setting of Pr. 21 Acceleration/deceleration time increments is "0" (initial value), the setting range is "0 to 3600s" and the setting increments are "0.1s", and when the setting is "1", the setting range is "0 to 360s" and the setting increments are "0.01s"

Power supply
Output		Pr.264
	Subtracted	Power-failure
frequency	frequency at	deceleration time 1
Power-failure
	deceleration start		Pr.265
deceleration	Pr.262		Power-failure
time switchover
			deceleration
frequency			time 2
Pr.266		Time

(1)Power failure stop mode (Pr.261 = “1”)

⋅If power is restored during power failure deceleration, deceleration to a stop is continued and the inverter remains stopped.To restart, turn off the start signal once, then turn it on again.

Power	supply	Pr.261 = 1
	frequency	During deceleration at
		occurrence of power failure
		During stop at
		occurrence of
		power failure
	Output
		Time
STF
Y46

Turn off STF once to make acceleration again

(2)Instantaneous power failure-time operation continuation function (Pr.261 = “2”)

⋅When power is restored during deceleration after an instantaneous power failure, acceleration is made again up to the set frequency.

⋅When this function is used in combination with the automatic restart after instantaneous power failure operation, deceleration can be made at a power failure and acceleration can be made again after power restoration.

When power is restored after a stop by deceleration at an instantaneous power failure, automatic restart operation is performed if automatic restart after instantaneous power failure has been selected (Pr. 57 ≠ "9999")

Pr.261 = 2	When power is restored during
	deceleration

Power		IPF
supply
Output
frequency	During deceleration
	at occurrence of	Reacceleration
	power failure
		Time
Y46

Pr.261 = 2, Pr.57 9999	When used with automatic restart
	after instantaneous power failure

	During power failure
Power
supply
Output
frequency	Automatic restart
During deceleration
at occurrence of	after instantaneous
power failure	power failure
	Time

Reset time + Pr.57

Y46

Pr. 267 Refer to the section about Pr. 73 and other relevant parameters.

Pr. 268 Refer to the section about Pr. 52 and other relevant parameters.

Pr. 269 Parameter for manufacturer setting. Do not set.

Pr.	299	Refer to the section about Pr. 57 and other
		relevant parameters.
Pr.	331 to 337		Refer to the section about Pr. 117 and
			other relevant parameters.

43 Pr. indicates simple mode parameters and Pr. indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.