RLY-4 and RLY-8 Remote Relays

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

Applications

Parking Facilities
Vehicle Repair Shops
Manufacturing Plants
Food Processing Plants
Cold Storage Facilities
and many more...

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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.

Specifications

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

Certifications

Conforms to:

CSA-C22.2 No. 205-12, UL508 (Edition 17):2007

EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010

FCC. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

RoHS compliant circuit boards

Product Codes

RLY-4

Offers four remote SPDT relays rated 5 amps @ 240 VAC, Modbus® RS-485, dust / water tight, corrosion resistant enclosure

RLY-8

Offers eight remote SPDT relays rated 5 amps @ 240 VAC, Modbus® RS-485, dust / water tight, corrosion resistant enclosure

Compatible Devices

QCC-M, QCC-B

A maximum of one RLY-4 device (offering a maximum of 4 remote relays) can be connected to the QCC.

FCS-M, FCS-B

A maximum of fourteen RLY-4 devices (offering a maximum of 56 remote relays) can be connected to the FCS (with no RLY-8).

A maximum of seven RLY-8 devices (offering a maximum of 56 remote relays) can be connected to the FCS (with no RLY-4).

FCS-8-M, FCS-8-B

A maximum of two RLY-4 devices (offering a maximum of 8 remote relays) can be connected to the FCS-8.

A maximum of one RLY-8 device (offering a maximum of 8 remote relays) can be connected to the FCS-8.