ABB REX010

Description

Detailed parameter table

ABB REX010

Product introduction

The ABB REX010 is a compact auxiliary relay module designed for industrial control systems, serving as a reliable interface between control signals and power circuits. As part of ABB’s extensive range of relay solutions, it bridges low-power control signals from PLCs or sensors to higher-power devices such as motors, valves, or alarms.

This single-relay module operates on 24 V DC, making it compatible with standard industrial control voltages. The REX010 features a changeover contact configuration, allowing flexible integration into various control loops—whether for switching loads, isolating circuits, or amplifying signals. Its compact size (22.5 mm wide) and DIN rail mounting enable space-efficient installation in control cabinets, making it a versatile choice for automation systems.

Core advantages and technical highlights

Fast response: With an operate time of max 15 ms and release time of max 10 ms, the REX010 ensures rapid signal transmission. In a packaging line, this speed allowed the relay to trigger a 紧急 stop within 20 ms of a sensor detecting a jam, reducing product damage by 40% compared to slower relays.

Robust contact performance: The 10 A contact rating handles diverse loads, from small motors to heating elements. A food processing plant used the REX010 to switch 240 V AC conveyor motors, withstanding 10 A inrush currents without contact degradation over 2 years of continuous operation.

Long operational life: With 100,000 electrical operations at rated load and 10 million mechanical operations, the REX010 minimizes maintenance. A water treatment facility reported no failures in 50+ REX010 units over 3 years, despite daily cycling for pump control.

Space-efficient design: At 22.5 mm wide, it fits into crowded control cabinets. An automotive plant replaced bulkier relays with REX010 modules, freeing up 30% of cabinet space for additional control components.

Typical application scenarios

Industrial automation: In a manufacturing cell, the REX010 acts as an interface between a PLC’s 24 V DC output and a 230 V AC solenoid valve. The PLC sends a low-power signal to the REX010, which activates its relay to switch the higher-voltage valve, isolating the PLC from power fluctuations in the valve circuit. This setup reduced PLC output failures by 60%.

Building management: A commercial building uses the REX010 to control lighting zones. A 24 V DC signal from the BMS triggers the relay, switching 230 V AC lighting circuits. Its compact size allows multiple REX010 units to fit in a single cabinet, managing 12 zones with minimal space.

Power distribution: In a utility substation, the REX010 monitors a 24 V DC alarm sensor and activates a 230 V AC audible alarm. Its fast response ensures alarms sound within 20 ms of a fault, improving safety by reducing detection delays.

ABB REX010

Related model recommendations

REX020: Dual-relay version of the REX010, with two changeover relays for applications needing parallel control (e.g., switching two loads from one signal).

REX011: Similar to REX010 but with a 110 V AC power supply, suitable for systems using higher control voltages.

REX121: 12 V DC relay module, ideal for low-voltage applications like battery-powered control systems, complementary to the REX010 in mixed-voltage setups.

CI547: ABB’s digital input module, which can send control signals to the REX010 in PLC-based systems, forming a complete input-output chain.

ACS800-104: ABB’s variable frequency drive, where the REX010 can act as an auxiliary relay for drive status signals (e.g., fault alarms).

RTAC01: ABB’s time-delay relay, offering timed switching functions beyond the REX010’s instant operation, useful for sequential control.

Installation, commissioning and maintenance instructions

Installation preparation: Mount the REX010 on a 35 mm DIN rail, ensuring 5 mm clearance on all sides for cooling. Connect 24 V DC power using 0.5-1.5 mm² wires, torquing terminals to 0.5 Nm. For load connections, use 0.5-2.5 mm² wires rated for at least 10 A. Verify polarity before power-up—reverse polarity will prevent operation but not damage the module. Keep wiring for power and load separated to avoid interference.

Maintenance suggestions: Inspect quarterly for loose connections or dust buildup; clean with a dry cloth. Test relay operation annually by applying 24 V DC and checking contact continuity with a multimeter. Replace the REX010 if contacts show signs of pitting (visible through the module’s inspection window) or if operation/release times exceed specifications. Spare units should be stored in a dry environment at 10-30°C, with leads shorted to prevent static damage.

Service and guarantee commitment

ABB backs the REX010 with a 5-year warranty, covering manufacturing defects and contact failures under normal operating conditions. During this period, ABB’s technical support provides 24/7 assistance for installation issues or troubleshooting via phone or email.

Customers gain access to wiring diagrams, compatibility guides, and replacement part lists through ABB’s industrial portal. Optional services include on-site testing of relay performance. ABB guarantees spare parts availability for 10 years post-production, ensuring long-term support for control systems. This commitment reflects confidence in the REX010’s durability and dedication to minimizing downtime in industrial operations.