Provides an additional 4 or 8 relays to a fixed gas detection system

The RLY-4 and RLY-8 are remote relay devices that offer up to four and eight (respectively) additional SPDT dry contact relays to a fixed gas detection system

 

Key Features

  • Increases the number of available relays
  • User selectable gas alarm activation level for each relay (set at the controller)
  • User selectable “Failsafe” and latching operation (set at the controller)
  • ON/OFF Delay configurations (set at the controller)
  • User configurable to revert to a default state if connection is lost with the controller (set at the controller)
  • Modbus® RS-485 RTU communication
  • Standard water / dust tight, corrosion resistant enclosure

 

Description

The RLY-4 and RLY-8 are remote relay devices that offer up to four and eight (respectively) additional SPDT dry contact relays to a fixed gas detection system. The RLY-4 is specifically designed to communicate with both the QCC Quad Channel Controller and the FCS Flexible Control System via Modbus® communications protocol. The RLY-8 is designed to work with the FCS and FCS-8 only. In the event that the connection is lost between the controller and the remote relay, a user configurable default state can be set to ensure the relays continue to operate as required.

The relays are rated 5 amps @ 240 VAC each and can be used to control remote alarms, strobes, exhaust fan starters, make up air fan contactors, etc. Both devices come in a standard water / dust tight, corrosion resistant ABS / polycarbonate enclosure with a hinged, secured door.

 

RLY-4 and RLY-8 Remote Relays

  • Mechanical

     

    Enclosure

    ABS / Polycarbonate, corrosion resistant

     

    Copper coated interior to reduce RF interference

    Weight

    RLY-4: 1.08 kg / 2.4 lbs

     

    RLY-8: 1.24 kg / 2.75 lbs

     

     

    Size

    254 x 218 x 109 mm / 10.0 x 8.6 x 4.3 inches

    Input/Output

     

    Relay

    RLY-4: 4 SPDT relays, rated 5 amps @ 240 VAC

     

    RLY-8: 8 SPDT relays, rated 5 amps @ 240 VAC

    Communication

    Modbus® RS-485 RTU

    Electrical

     

    Power Requirement

    24 VDC, 3W, Class 2 (24 VDC supplied by the Controller)

    Wiring

    4-conductor shielded minimum 18 AWG stranded within conduit

    Fuses

    Thermal, resetting

    Environmental

     

    Operating Temperature

    -20°C to 40°C (-4°F to 104°F)

    Operating Humidity

    15 - 90% RH non-condensing

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