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4 Channel Dry Contact Closure over Fiber Converter

View : 359
Type : Dry Contact Closure over Fiber
Description :

The dry contact over fiber converter provides 4-channel unidirectional dry contact or 2-channel bidirectional dry contact on optical fiber transmission.


The mini type 4ch dry contact over fiber converter provides 4-channel unidirectional dry contact or 2-channel bidirectional dry contact on optical fiber transmission, which solves the problem of electromagnetic interference, the interference and lightning damage, improves the reliability of communication, data security, and confidentiality, and can be widely used in various industrial control, process control, and traffic control and other occasions, especially for banks electrical and electromagnetic interference to the environment, the special requirements of the Department and the system.


dry contact to fiber converter


● It supports unidirectional 4-channel dry contact and bidirectional 2-channel dry contact; Dry contact type supports dry node and wet node;

● The switching state of the dry contact is stable when it is turned on or the optical fiber is not connected, and there will be no disorderly action state;

● The dry contact input interface has its own filter to filter out the interference pulse and ensure the stable output of the dry contact signal at the output terminal;

● It is possible to set the normally open and normally closed states of each switch output when the optical fiber is not connected;

● Dry contact interface anti-radar to IEC61000-4-5 (8/20μS) differential mode: 6KV, impedance (2Ω); common mode: 6KV, impedance (2Ω) standard;

● Support a wide range of 9-55V AC and DC power input;

● Support internal isolation, redundant dual power input;

● The power supply supports overload protection and anti-reverse connection protection;

● Comply with industrial level 4 electromagnetic compatibility requirements;

● Super lightning protection function: lightning protection, anti-inductive high voltage, anti-surge, etc.;

● No fan for efficient heat dissipation, reducing repair time;

● Anodized aluminum alloy shell, IP40 protection level, can withstand the test of harsh environment;

● Rail or wall-mounted installation;

● Wide temperature type: working temperature -40℃~ +85℃;

● All models have passed the 100% oven test.


● Fiber

Optical port: 1

Optical Fiber: Single/Dual fiber

Fiber interface: SC/FC/ST/LC(SFP) Optional

Wavelength: 850nm/1310nm Multimode;1310nm/1550nm Single mode

Relay-free transmission distance: 0~80Km

Typical transmit power: single mode 100uw — 0.93mw


● Dry Contact Interface  

Output interface type:

Dry contact: signal relay dry contact output;

Pulse amount (wet contact):

Optical MOS relay output, 0-VCC (VCC is the power supply voltage of the machine)

Response time dry contact output: <1.2ms; wet contact output <0.6ms

Switch signal dry contact output 30VDC/0.5A; wet contact output: 245VDC/0.12A

Maximum switching frequency: 50HZ

Output surge protection: dry contact output: none; wet contact output: TVS+solid discharge tube protection


● Environmental Index

Working temperature: -40℃—+85℃

Storage temperature: -40℃—+85℃

Working humidity: 0%—95% (non-condensing)

MTBF: >100,000 hours


Product Number


Function Description

Industrial rail type 4-Channel dry contact fiber mux

Port Description

4-Channel dry contact, 1 optical fiber interface interfaces

Power Supply

Redundant dual power supply input DC9-48V, power consumption <5W

Overload protection: support; reverse polarity protection: support; redundant protection: support

Access terminal: 4-core 5.08mm pitch plug-in terminal

Product Size

110mm(L) x 86mm(W) x 40.5mm(H)

Installation method: guide rail installation, wall-mounted installation




application of dry contact to fiber

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