Off-Highway Machinery Automotive Grade • CAN 2.0B

REX-266 Off-Highway Relay Module

6-Channel CAN-Controlled Heavy-Duty Relay Controller engineered for mobile machinery in agricultural, mining, construction, and specialty vehicle applications. Features 9V–36V DC wide supply input with transient surge suppression.

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REX-266 Automotive-Grade 6-Channel Relay Controller IGFO-AE-100 sensor (representative image)
Image for illustration; final product may differ.
FIG 1.0 • Automotive Grade 6-Channel Relay Module with CAN 2.0B Interface • 9V–36V DC Supply
Safety Notice: REX-266 is not a safety-rated device and is not certified to ISO 13849 or IEC 61508. Do not use it as the sole means of personnel or machine safety protection.
Automotive Grade Architecture

Engineered for Tough Conditions • Built to Last

A robust, automotive-grade actuator solution designed specifically for demanding mobile machinery, off-highway vehicles, and severe industrial power switching.

CAN 2.0B Controlled

Automotive Grade Reliability

Integrated load-dump suppression designed for ISO 7637-2 and ISO 16750-2 compliance automotive electrical test standards. Protects internal microelectronics against destructive starter motor back-EMF, inductive spikes, and alternator runaway pulses.

6 Independent Relay Channels

Features 6 dedicated relay outputs rated for 5A continuous resistive load per channel (NO/COM isolated contacts). Provides deterministic digital actuation for hydraulic solenoid valves, halogen/LED light arrays, electric motors, and pumps.

Wide 9V – 36V DC Supply

Directly compatible with standard 12V and 24V mobile battery architectures with reverse polarity protection. Maintains uninterrupted deterministic CAN communications even during heavy engine cold-crank voltage dips down to 9V.

Technical Specifications

Parameter Specification Operating Condition / Standards
Supply Voltage 9V to 36V DC Automotive wide range with reverse polarity protection
Relay Outputs 6 Independent Relay Channels Rated 5A resistive load per channel (NO/COM isolated contacts)
Bus Interface CAN 2.0B Protocol 125 kbps / 250 kbps / 500 kbps configurable baud rate
Transient Protection ISO 7637-2 / ISO 16750-2 Integrated suppression for load dump and pulse transients
Operating Temperature -40°C to +85°C Industrial / automotive grade temperature range
Connectors Automotive Heavy-Duty Terminal Blocks High-vibration screw / spring-cage retention
Design Architecture Compact, Rugged PCB Design Multi-layer FR-4 with conformal coating option
Enclosure & Ingress IP20 Terminal Block Board / IP67 Potted Enclosure Option Conformal-coated PCB; custom sealed enclosure available for field mounting
Cut-Off Trip Speed <8 ms Hardware Fast-Trip Operational hardware cut-off on threshold trip or bus timeout*
Target Machinery Off-Highway, On-Highway & Industrial Agricultural tractors, mining haulers, construction rigs

* Note: Hardware fast-trip cut-off is an operational protection feature. Not a safety-rated function. Not certified to ISO 13849 or IEC 61508.

Industry Applications

Ideal For Mobile Machinery & Tough Environments

Optimized for severe mobile deployments where wiring harnesses must be reduced, power circuits require galvanic isolation, and actuators respond directly to in-cab or automated CAN commands.

4 Core Verticals
Smart Farming AGRICULTURE

Agricultural Machinery & Implements

Deployed on modern agricultural tractors, combine harvesters, seeders, and smart chemical sprayers. Acts as a decentralized CAN node governing boom section valves, chemical injection solenoids, grain tank unloading augers, and high-intensity LED field worklamps. Replaces bulky point-to-point in-cab wiring with a streamlined CAN bus pair.

  • Sprayer Booms: Millisecond actuation of individual nozzle shutoff solenoids.
  • Implements: ISOBUS / CAN-controlled hydraulic cylinder position valves.
  • Work Lighting: Multi-zone high-current field worklamp power distribution.
Earthmoving CONSTRUCTION

Construction & Earthmoving Equipment

Installed on hydraulic excavators, wheel loaders, backhoes, and soil compactors. Operates auxiliary hydraulic hammer diversion circuits, quick-coupler safety release valves, cab HVAC blower motor speeds, and audible reversing alarm strobes. Handles high-vibration shock profiles and washdown cycles without contact bouncing.

  • Hydraulic & Presence Signalling: Boom positioning feedback and operator presence signalling (complementary to certified safety systems per ISO 13849).
  • Auxiliary Attachments: Bi-directional tilt-rotator and breaker hammer switching.
  • Thermal Resilience: Engine-bay ambient operation up to +85°C.
Heavy Mining HAUL TRUCKS

Mining Vehicles & Open-Pit Haulers

Engineered to survive 24/7 duty on 240-ton open-pit haul trucks, blast hole drill rigs, and underground continuous miners. Powers electric retarder cooling fan relays, automated dry-chemical fire suppression trigger squibs, automatic central lubrication cycle pumps, and master battery isolator contactors amidst severe inductive surges.

  • Fire Suppression: Instant CAN-commanded squib detonation for extinguisher systems.
  • Automated Lube: Timed pulse actuation for progressive grease distribution blocks.
  • ISO 16750-2 Load Dump Suppression: Engineered suppression network absorbs inductive energy transients (up to ISO 16750-2 / ISO 7637-2 specifications for 24 V systems) without MCU reset.
Emergency & Utility SPECIALTY FLEET

Specialty Vehicles & Municipal Fleets

Targeted for airport ground power units (GPU), aircraft de-icers, fire apparatus, aerial bucket utility trucks, and municipal street sweepers. Controls high-power warning light bars, hydraulic outrigger stabilization valves, water pump clutches, and hydraulic tailgates from a centralized cab touchscreen controller via CAN 2.0B frames.

  • Emergency Apparatus: Synchronized siren, strobe, and scene-light staging relays.
  • Utility Outriggers: Interlocked hydraulic deployment valve actuation.
  • De-icing Rigs: Heating element contactor and nozzle fluid pump cycling.

Wiring Architecture & CAN Interface

Channel Pinout & Relay Contact Assignment
Terminal / Channel Signal Type Rating Functional Assignment
VIN / GND Power Supply 9V – 36V DC Main battery feed with reverse polarity & TVS clamp
CAN_H / CAN_L CAN Bus 2.0B Configurable 125k–500k Differential serial communications to vehicle master ECU
CH 1 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 1 (Hydraulic Valve / Worklamp / Pump)
CH 2 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 2 (Hydraulic Valve / Worklamp / Pump)
CH 3 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 3 (Auxiliary Solenoid / Beacon)
CH 4 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 4 (Auxiliary Solenoid / Beacon)
CH 5 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 5 (Hardware Fast-Trip Cut-Off / Auxiliary Disconnect)
CH 6 (NO / COM) Isolated SPST Relay 5A @ 30V DC Actuator Channel 6 (Hardware Fast-Trip Cut-Off / Auxiliary Disconnect)

Mounting & Cable Harness Customization: Enclosure mounting configurations and mechanical interfaces are fully customizable based on customer asset requirements. We support versatile intrusive and non-intrusive mounting options—including high-tack industrial adhesive bonding, pipe and structural clamps, DIN-rail clips, clip-on/quick-connect cable connectors, magnetic mounting shoes, and rigid bolt-down or threaded studs tailored to customer machinery—as well as custom cable harness assemblies. Connect with our engineering team at contact@ignisforma.com or submit an inquiry for standard accessory availability and customized mechanical integration options.

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IGNISFORMA supplies production-ready PCB modules, IP67 potted enclosures, and pre-terminated automotive wiring harnesses.

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