summary

This product accepts inputs from switches or proximity switches in hazardous areas, and outputs them to relays or transistors on the safety side through safety barriers. It has input status detection indicators and can be controlled in both forward and reverse directions. The product requires independent power supply, with input/output/power isolation. Can be used in NAMUR proximity switches, switches, and other field equipment that comply with DIN19234 (including intrinsically safe pressure, temperature, and liquid level switches).

safety certification

Certificate No	GYB081021
Explosion proof sign	[Exia] IIC (National Explosion proof Safety Supervision and Inspection Station Certification for Instruments and Meters)
Authentication parameters
terminal	8-7, 11-10
Maximum allowable voltage	Um=250V
voltage	Uo=10.5V
electric current	Io=16mA
power	Po=42mW
capacitance	Co=2.4μF
inductance	Lo=80mH

Wiring diagram

Single input single output wiring diagram

Dual input dual output wiring diagram

terminal number		Terminal Description
Safe Zone (Green)	1	OUT1A（S-）
	2	OUT1B（S+）
	3	OUT2A（S-）
	4	OUT2B（S+）
	5	POW（+）
	6	POW（-）
Dangerous Zone (Blue)	7	IN1A
	8	IN1B
	10	IN2A
	11	IN2B

Application 1: Transistor collector output Application 2: Transistor emitter output

Structural Outline Drawing

EVT1/EVT2: Working indicator light: When the input signal is short circuited, the indicator light is green; When the input signal is disconnected, the indicator light is red.

35mm guide rail installation, please pay attention to stable and firm positioning during installation.

Please install it vertically as much as possible to facilitate heat dissipation inside the instrument.

Technical Parameter

power supply
Rated working voltage range	DC 24V±10%
power consumption	Single output: ≤ 0.8W, dual output ≤ 1.2W
Dangerous side
Input Signal Type	Contact switch, proximity switch (frequency ≤ 5KHZ)
Distribution voltage	≈ 8V (open circuit)
Short circuit radio wave	≈8mA
Safety side
Output signal type	Relay/transistor
Relay output driving capability	125VAC/0.6A 30VDC/2A
Relay response time	＜5ms
Transistor output	When collector output (see application 1 for wiring method): High level VCC (≤ 30V), low level ≤ 2.5V
	When the emitter outputs (see application 2 for wiring method): high level VCC-2.5V, low level ≤ 0.5V
Input and output characteristics (when set to in-phase control)
On site switch closed or input circuit current>2.1mA, output relay or transistor conducting, channel green indicator light on
On site switch open circuit or input circuit current ＜ 1.2mA, output relay or transistor non-conductive, channel red indicator light on
Input and output inverse control settings
Set by panel dial switch J5 (see accompanying manual for details)
Dielectric Strength
Local security end and non local security end	2500V，a.c; 1min
environmental condition
ambient temperature	0～50℃
ambient humidity	5% to 95% RH (non condensing)
Standard
electromagnetic compatibility	Compliant with GB/T18268 Industrial Equipment Application Requirements

instrument selection

Model example: NHR-A35-36/36-K1/K1.
Switch input detection terminal isolation gate, dual input signal is switch quantity, dual output is relay contact signal.