Description

The XO08R1 is an 8-channel electromechanical relay output module developed by ABB for integration into the AC 800M and System 800xA automation platforms. Designed for high-reliability switching of industrial loads, this compact module delivers robust performance in controlling contactors, solenoids, valves, alarms, and indicator circuits—combining electrical isolation, visual diagnostics, and plug-in modularity in a single DIN-rail-ready unit.

Unlike solid-state alternatives, the XO08R1 leverages sealed, gold-plated relays capable of handling both AC and DC voltages without derating, making it a versatile and future-proof choice for mixed-voltage control panels.

Application Scenarios

At a pharmaceutical manufacturing facility in Switzerland, a critical sterilization autoclave system required fail-safe control of steam valves and exhaust fans. Previous solid-state output modules suffered premature failure due to inductive surges from valve coils. The engineering team replaced them with the ABB XO08R1. drawn to its electromechanical design and channel-level isolation. During a validation run, a power transient caused a momentary voltage dip—but the XO08R1 maintained stable operation, preventing a costly batch loss. “It just worked,” noted the lead automation engineer. “No snubbers, no extra wiring—just reliable switching.” This real-world example underscores how the XO08R1 ensures process integrity where precision and uptime are non-negotiable.

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Technical Principles and Innovative Values

Innovation Point 1: Simplified Mixed-Voltage Control – The XO08R1 eliminates the need for separate AC and DC output cards. One module can simultaneously switch a 24V DC solenoid and a 230V AC alarm horn—reducing panel footprint and inventory complexity.

Innovation Point 2: Built-In Diagnostic Clarity – Each channel features a bright red LED that illuminates when the relay is energized, enabling instant visual verification during commissioning, troubleshooting, or safety audits—no multimeter required.

Innovation Point 3: Seamless S800 Ecosystem Integration – The XO08R1 snaps directly onto standard ABB terminal bases like the TU845. allowing hot-swappable replacement without rewiring—critical for minimizing downtime in continuous processes.

Innovation Point 4: Surge Resilience by Design – Electromechanical contacts inherently tolerate inductive kickback from motors and valves, removing the need for external flyback diodes or RC snubbers that add cost and failure points.

Application Cases and Industry Value

In a U.S. food and beverage plant upgrading its bottling line, engineers selected the XO08R1 to control capping actuators, reject gates, and conveyor stop mechanisms. Over 18 months of 24/7 operation, zero output failures were recorded—despite frequent cycling (up to 5.000 operations/day per channel). Maintenance staff praised the clear LED indicators for rapid fault localization during shift handovers. Similarly, in a Middle Eastern desalination plant, the XO08R1 manages high-pressure pump start commands and chemical dosing valves. Its wide temperature tolerance and corrosion-resistant construction ensure reliability in humid, saline environments where electronics often degrade prematurely.

Related Product Combination Solutions

TU845: Terminal base unit – provides spring-clamp field wiring interface for the XO08R1. enabling tool-free maintenance.

TF845: Fuse terminal adapter – adds overcurrent protection to each XO08R1 output channel for enhanced safety.

PM864A: AC 800M controller – the central processor that drives XO08R1 outputs via S800 I/O stations.

DI810: Digital input module – pairs with XO08R1 to create complete local control loops (e.g., motor start/stop with feedback).

CI854: PROFIBUS DP communication module – allows remote mounting of XO08R1-based I/O racks up to 1.2 km from the CPU.

SNAT 7780: Security gateway – secures remote access to systems containing XO08R1 output logic.

TB845: Bare terminal base – for custom marshalling schemes with the XO08R1 in legacy cabinets.

AI810: Analog input module – complements XO08R1 in hybrid applications (e.g., level control with pump on/off).

Installation, Maintenance, and Full-Cycle Support

Installing the XO08R1 is straightforward: mount a compatible terminal base (such as TU845) on a DIN rail, connect field wires to the integrated spring terminals, and firmly insert the XO08R1 until it clicks into place. The module draws power and logic signals directly from the backplane—no external wiring needed. For optimal longevity, avoid installing near high-EMI sources like variable frequency drives without proper shielding, and ensure cabinet ventilation maintains ambient temperature below +60°C.

Maintenance is minimal: periodic visual checks of the LEDs confirm operational status, and module replacement takes seconds—no electrician certification required. As an ABB-authorized solutions provider, we supply only genuine XO08R1 units (1SBP260101R1001), each tested for relay functionality, contact resistance, and LED response. All units come with a 12-month warranty, full traceability, and access to our technical support team for integration guidance or lifecycle planning.

Contact us for a customized solution—whether you’re building a new control panel, modernizing legacy equipment, or securing critical spares, the XO08R1 delivers proven, plug-and-play reliability for electromechanical output demands across global industries.