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Convergent type 128ch dry contact to Ethernet converter

View : 195
Type : Dry contact closure Over IP
Description :

The converged 128 channel dry contact equipment can transmit up to 128 channel switch dry contact in the two-layer Ethernet network


The converged 128 channel dry contact equipment can transmit up to 128 channel switch dry contact in the two-layer Ethernet network. It can be divided into two types of equipment: convergence type central equipment and node machine equipment, and the middle can be connected with a layer-2 switch;

The product solves the problems of electromagnetic interference, ground environment interference and lightning damage, and improves the reliability, security and confidentiality of data communication. It can be widely used in various industrial control, process control and traffic control, especially suitable for banks, electric power and departments and systems with special requirements for electromagnetic interference environment.



  • ● The equipment at the convergence center point shall provide a maximum of 128 dry contact, and two 100M Ethernet electrical ports and two 100M Ethernet optical ports can be connected to two optical directions;
  • ● The node machine equipment shall provide at most 8-channel  dry contact, 2 100M Ethernet electrical ports and 1 100M Ethernet SFP optical port;
  • ● Input switch value automatic detection, when the input state, the switch output is the state, which is convenient for project opening;
  • ● When the switch value is in the start-up state or when the optical fiber is not connected, other switch states are stable, and there is no disorderly action state;
  • ● It can support two way 64 channel dry contact switching value or wet contact (Optical MOS Relay), with high reliability and high action rate;
  • ● Each motherboard can be connected with the node equipment with the total dry contact no more than 128 channels and the equipment at the convergence end through the switch;
  • ● Automatic reset function of anti crash monitoring, with heartbeat packet sending and detection inside;
  • ● It can support independent SNMP network management, check the switch on / off status of the office and all front-end devices, and the working status of Ethernet, and control the front-end equipment;
  • ● Switch value interface lightning protection meets iec61000-4-5 (8 / 20 μ s) differential mode: 6kV, impedance (2 Ω); common mode: 6kV, impedance (2 Ω);
  • ● AC 220 V, DC – 48V, DC + 24 V can be selected. There is no positive and negative pole in DC power supply


  • Fiber type

Working wavelength: 1310nm, 1550nm

Speed: 100M, full duplex or half repeater mode

Protocol: support IEEE 802.3, IEEE 802.1Q (VLAN)

MAC address table: can learn 4096 MAC addresses

Physical interface: FC / SC

The distance of optical fiber transmission is limited by the loss of optical path and the additional loss caused by connecting terminals, connectors and patch boards. The transmission distance may also be limited by the fiber bandwidth

  • 10/100/1000M Ethernet                       

Protocol: IEEE 802.3az, IEEE 802.1Q (VLAN)

Rate: 10 / 100M adaptive, full / half duplex fully


MAC address table: can learn 4096 MAC


Physical interface: RJ45 supports auto mdix

  • Dry contact interface

Output interface type:

Dry contact: Optical MOS Relay Output

(maximum internal resistance 25 Ω)

Wet contact impulse: output of Optical MOS

Relay, 0-vcc (VCC is the power supply voltage of

the machine)

Response time signal relay dry contact output: <1.2ms,

Optical MOS Relay Output < 0.6ms

The dry contact output of switch signal relay is 30VDC / 0.5A;

the output of Optical MOS Relay is245vdc / 0.12A

Maximum switching frequency: 50 Hz

Output surge protection: TVs + solid discharge

tube protection

Physical interface: terminal block

  • Power                  

System power supply: ac180v ~ 260V; DC – 48V; DC + 24V

Power consumption: ≤ 10W

  • Environmental indicators                

Working temperature: – 40 ℃ ~ 85 ℃

Working humidity: 5% – 95% (no condensation)

Storage temperature: – 40 ℃ ~ 85 ℃

Storage humidity: 5% – 95% (no condensation)


Product number


Product Function Description

Transmist 128 channel dry contact singnal over Ethernet,can provide SNMP mangement

Business port description

1 Ethernet SFP port, 2  Ethernet ports, 128 dry contact ports, one SNMP port

Power supply

AC220V or dc-48v (power supply optional), support power redundancy backup

Product Size

(length × width × height) 485 * 200 * 45mm desktop type


2.6Kg /PCS


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