Mitsumi electronic FR-F520-0.75K, 55K Sink logic, Pr =, Deviation, Reverse action Forward action

PARAMETERS

4)Reverse action

Increases the manipulated variable (output frequency) if deviation X = (set point - process value) is positive, and decreases the manipulated variable if deviation is negative.

				Deviation	Set point
	[Heating]
Set point	+	X>0	Cold →	up
		X<0
	-		Hot →	down
				Process value
	Feedback signal
	(Process value)

5)Forward action

Increases the manipulated variable (output frequency) if deviation X = (set point - process value) is negative, and decreases the manipulated variable if deviation is positive.

	[Cooling]
Set point	+	X>0	Too cold →		down
		X<0
	-		Hot	→	up
	Feedback signal
	(Process value)

Process value

Set point

Deviation

Relationships between deviation and manipulated variable (output frequency)

	Deviation
	Positive	Negative
Reverse action	&	'
Forward action	'	&

(3) Wiring example

• Sink logic

• Pr. 128 = 20

• Pr. 183 = 14

• Pr. 192 = 16

	NFB		Inverter	Motor	Pump
		R 〈L1〉	U
Power supply		S 〈 L2〉	V	IM		P
		T 〈L3〉	W

• Pr. 193 = 14

• Pr. 194 = 15

Forward rotation Reverse rotation

PID control selection

Setting potentiometer (Set point setting)

AC1φ

STF

STR

RT(Note 3)									For 2-wire
	SD			(Note 2)
										type
					FU		Upper limit
10					OL		Lower limit				-
2					IPF			Forward
								rotation output
5					SE			Reverse
1								rotation output
						Output signal common
4
			(Process values) 4 to 20mADC
	0 24V
	DC
	power	(Note 1)
	supply

Detector For 3-wire type

+ + - +

(OUT)(COM)(24V)

200/220V 50/60Hz

Note: 1. The power supply must be selected in accordance with the power specifications of the detector used.

2.The output signal terminals used depends on the Pr. 191 to Pr. 194 settings.

3.The input signal terminals used depends on the Pr. 180 to Pr. 186 settings.

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