Mitsubishi Electronics FR-F700 Pr Increase cooling fan life, Pr to 247 Slip compensation

Pr. 244 Increase cooling fan life

Pr.244 Cooling fan operation selection

You can control the operation of the cooling fan (200V class 2.2K or more, 400V class 3.7K or more) built in the inverter.

Pr. 244 Setting Description

The cooling fan operates at power on.

0Cooling fan on/off control invalid (The cooling fan is always on at power on)

Cooling fan on/off control valid

	The fan is normally on during inverter
1 (initial value)	operation. The fan switches on/off according to
	the temperature during a stop of the inverter
	whose status is monitored.

Pr. 245 to 247 Slip compensation

Pr.245	Rated slip	Pr.246 Slip compensation time constant
Pr.247	Constant-output region slip compensation selection

The inverter output current may be used to assume motor slip to keep the motor speed constant.

Pr. Selection of motor stopping 250 method and start signal

Pr.250 Stop selection

Used to select the stopping method (deceleration to a stop or coasting) when the start signal turns off.

Used to stop the motor with a mechanical brake, etc. together with switching off of the start signal.

You can also select the operations of the start signals (STF/STR).

Pr.250			Description
		Start signal
Setting								Stop operation
		(STF/STR)
	STF signal: Foward						The motor is coasted to a
0 to 100s		rotation start
							stop when the preset time
	STR signal: Reverse
							elapses after the start
		rotation start
							signal is turned off. The
	STF signal: Start signal
							motor is coasted to a stop
	STR signal: Forward/
1000s to 1100s							(Pr. 250 - 1000)s after the
		reverse
							start signal is turned off.
		rotation signal
	STF signal: Foward
9999		rotation start
	STR signal: Reverse
							When the start signal is
		rotation start
							turned off, the motor
	STF signal: Start signal
							decelerates to stop.
	STR signal: Forward/
8888
		reverse
		rotation signal
When Pr. 250 is set to "9999" (initial value) or "8888".
frequency			Deceleration starts
			when start signal turns off
					Deceleration time
					(Time set in Pr. 8, etc.)
Output (Hz)
								DC brake
									Time
Start				OFF
signal		ON
RUN
signal		ON				OFF

When Pr. 250 is set to values other than "9999" (initial value) or "8888".

frequency		Output is shut off when set
		time elapses after start signal
		turned off
Output (Hz)		Pr.250
		Motor coasts to stop
			Time
		OFF
Start signal	ON

Pr.	Input/output phase failure
	251, 872 protection selection

Pr.251 Output phase failure protection selection Pr.872 Input phase failure protection selection

You can disable the output phase failure protection function that stops the inverter output if one of the inverter output side (load side) three phases (U, V, W) opens.

The input phase failure protection selection of the inverter input side (R/L1, S/L2, T/L3) can be made valid.

Pr. Number	Setting Range	Description
251	0	Without output phase failure protection
	1 (initial value)	With output phase failure protection
872	0 (initial value)	Without input phase failure protection
	1	With input phase failure protection

Pr.	252, 253	Refer to the section about Pr. 73 and
		other relevant parameters.

Pr.	Display of the life of the
	255 to 259 inverter parts
Pr.255 Life alarm status display		Pr.256 Inrush current limit circuit life display

Pr.257 Control circuit capacitor life display Pr.258 Main circuit capacitor life display Pr.259 Main circuit capacitor life measuring

Degrees of deterioration of main circuit capacitor, control circuit capacitor or inrush current limit circuit and cooling fan can be diagnosed by monitor.

When any part has approached the end of its life, an alarm can be output by self diagnosis to prevent a fault.

(Use the life check of this function as a guideline since the life except the main circuit capacitor is calculated theoretically.)

Pr.	Setting	Description
Number	Range
		Display whether the control circuit capacitor,
		main circuit capacitor, cooling fan, and each
255	(0 to 15)	parts of the inrush current limit circuit has
		reached the life alarm output level or not.
		Reading only
256	(0 to 100%)	Display the deterioration degree of the inrush
		current limit circuit. Reading only
257	(0 to 100%)	Display the deterioration degree of the control
		circuit capacitor. Reading only
258	(0 to 100%)	Display the deterioration degree of the main
		circuit capacitor. Reading only
		The value measured by Pr. 259 is displayed.
		Setting "1" and turning off the power starts the
	0, 1	measurement of the main circuit capacitor life.
259		When the Pr. 259 value is "3" after powering on
	(2, 3, 8, 9)
		again, the measuring is completed. Read the
		deterioration degree in Pr. 258.

Pr. 260 Refer to the section about Pr. 72.

		Features
Peripheral Devices		Why energy		savings?
	Standard		Specifications
Outline		Dimension		Drawings
Terminal Connection	Diagram		Terminal Specification		Explanation
	Operation		Panel
	Parameter		List
Explanations		of		Parameters
	Protective		Functions
		Options
		Instructions
		Motor
		Compatibility
		Warranty
		Inquiry

RUN signalONOFF

Pr. indicates simple mode parameters and Pr. indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions. 42