Hitachi NJI-350B manual Input Specifications, Circuit diagram, OFF → on, On → OFF

Chapter 3 Function and Performance Specifications

3.3.2 Input Specifications

The input circuit consists of DC input and AC input, with the following specifications.

(1) DC input

Item	Specification	Circuit diagram
Input voltage	24 V DC

Allowable input voltage range		0 to 30 V DC
Input impedance		Approx. 2.8 kΩ
Input current		7.5 mA typical
Operating	ON voltage	15 V DC (min) / 4.5 mA (max)
voltage	OFF voltage	5 V DC (max) / 1.5 mA (max)
Input lag	OFF → ON	Basic unit : 0.5 to 20 ms (configurable)
		Exp. unit : 0.5 ms or less
	ON → OFF	Basic unit : 0.5 to 20 ms (configurable)
		Exp. unit : 0.5 ms or less
Number of input points		See Chapter 4
Number of common		See Chapter 4
Polarity		None
Insulation system		Photocoupler insulation
Input display		LED (green)
External connection		10-point type: fixed type terminal block
		14-, 23-, 28-point types: Removable type
		screw terminal block (M3)

0

1

C

Internal circuit

*1: Common terminals are separated each other.

(2) AC input

	Item		Specification
Input voltage			100 to 120 V AC
Allowable input voltage range			85 to 132 V AC
			50 -5 % to 60 +5 % Hz
Input impedance			Approx. 14.6 kΩ (60 Hz)
			Approx. 17.6 kΩ (50 Hz)	0
Input current			Approx. 7 mA RMS (100 V AC/60 Hz)
Operating		ON voltage	80 V AC (min.) 4.5 mA		1
voltage		OFF voltage	30 V AC (max.) 2 mA
Input lag		OFF → ON	25 ms (max.) *1
		ON → OFF	30 ms (max.) *1			C
Number of input points			See Chapter 4.
Number of common			See Chapter 4.
Polarity			None
Insulation system			Photocoupler insulation
Input display			LED (green)
External connection			14-, 28-point types: Removable type screw
			terminal block (M3)

Circuit diagram

Internal circuit

*1: Delay by hardware only. Delay by digital filter (software filter) 0.5 to 20 ms is not included.

*2: Common terminals are separated each other.

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