Hitachi NB5741XD manual Control Circuit Terminals, Description Ratings and Notes

Control Circuit Terminals

Logic

inputs

L 5 4 3 2 1 P24

H O OI L FM CM2 12 11

Analog		Logic
	Analog
inputs		outputs
	outputs

AL0 AL1 AL2

Alarm

relay

Terminal	Description	Ratings and Notes
Name
P24	+24V for logic inputs	24VDC supply, 30 mA max.
		(Notes: Do not use for
		network power
		Do not short to terminal L)
1, 2, 3, 4,	Intelligent (program-	27VDC max. (use P24 or an
5	mable) discrete logic	external supply referenced to
	inputs	terminal L), 4.7kΩ input
		impedance
11, 12	Discrete logic outputs	50 mA max. ON current,
		27 VDC max. OFF voltage
L (top	GND for logic inputs	Sum of input 1 to 5 currents
row)		(Note: Do not ground)
CM2	Common for logic	100 mA max for sum of
	outputs	terminals 11 and 12 currents
FM	PWM output	0 to 10VDC, 1 mA max.,
		50% duty cycle
L (bottom	Common for analog	Sum of OI, O, and H
row)	inputs	currents (return)
OI	Analog input, current	4 to 19.6 mA range, 20 mA
		nominal

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