Sierra Monitor Corporation PF2A7H Example of Internal Circuit and Wiring, Output Specification

Example of Internal Circuit and Wiring

Output Specification

When the Lead wire with connector provided by SMC corporation is used the color of wire (Brown, white, Black, Blue) shown on circuit diagram will be applied.

－28, －29

NPN open collector 1 output + Analog output Max. 30V,80mA Internal voltage drop : 1V or less

PF2A7□H-□-28/68	]	5	20	ｍＡ]
Output : 1 to 5V	Ｖ
	[
PF2A7□H-□-29/69	Analog Output			Analog Output [
Output : 4 to 20mA
		1	4
		Min. measured flow Max. measured flow
		Instantaneous flow [	/min ]

	1
Circuit	4
Main	2
	3
－68, －69

Brown

OUT1	Load
Black
Analog Output		＋
White			24VDC
	Load
		－

Blue

Model No.	Max. measured flow		Min. measured flow
	(	/min)	( /min)
PF2A703H		150	3000
PF2A706H		300	6000
PF2A712H		600	12000

●Turn off power before connecting or disconnecting the connector.

●To insert the connector, push the connector socket of the lead

wire to the key part of the switch connector after aligning them

PNP open collector 1 output + Analog output Max. 80mA Internal voltage drop : 1.5V or less

to each other and secure the connector with the lock nut.

●To disconnect the connector, unlock the connector lock nut and

	1
Circuit	4
Main	2
	3

Brown

OUT1

Black Load Analog Output

White Load ＋

－

Blue

24VDC

pull out the connector straight.

●Install the lead wire separately from the route for power cable

or high-voltage cable. Otherwise, malfunction may potentially

result due to noise.

Connector pin number		Pin No.	Pin name
4	3
		1	DC(+)
		2	Analog Output
1	2	3	DC(-)
		4	OUT1
	Key

8 9