SICK UE410-4RO4 (Flexi Classic) | Relay Expansion Module for Safety Controller

Overview

The UE410-4RO4 is a relay expansion module for the SICK Flexi Classic safety controller family. It adds critical fault-tolerant relay outputs to the Flexi logic system, providing four energizing current (enable) relay contacts. Engineered for demanding safety applications, it’s certified to SIL 3 (IEC 61508), SILCL 3 (EN 62061), Category 4, and Performance Level e (EN ISO 13849-1) when paired with the appropriate main unit.lcautomation.com

Key Specifications

• Module Type: Relay expansion module (Flexi Classic platform)

• Outputs:

  • 4 × normally-open (NO), positively-guided enable current relay contacts (13/14, 23/24, 33/34, 43/44)

  • 2 × signaling NO contacts (Y14, Y24)

  • 2 × contactor monitoring NC contacts (Y1/Y2, Y3/Y4)lcautomation.com

• Connection: Dual-level spring-clamp terminals, supporting various wire types (solid, stranded, with ferrules)lcautomation.com

• Power Supply: Via the internal FLEXBUS+ interface; low internal consumption (≤3.2 W)lcautomation.com

• Construction:

  • Panel-mount form factor: W 22.5 × H 96.5 × D 120.8 mm

  • Lightweight (~186 g)lcautomation.com

• Operating Conditions:

  • Ambient temperature: −25 °C to +55 °C

  • Storage: −25 °C to +70 °C

  • Humidity: 15–95% non-condensing

  • Enclosure: IP 40 housing, IP 20 terminalslcautomation.com

  • Vibration/shock rated for industrial environmentslcautomation.com

Functional Advantages

• High Safety Performance: Meets the highest safety standards (SIL 3, PL e, Cat. 4) when combined with Flexi Classic base units—ideal for machinery safety circuits requiring robust fault protection.

• Flexible Integration: Logical configuration is done via rotary DIP switches at the front of each module—no software required. Supports daisy-chaining with main units and other extensions, allowing modular system design.rrfloody.comaudin.fr

• Compact & Scalable: Enables capacity expansion of Flexi Classic safety controllers without increasing panel footprint significantly.

• Reliable Connection: Secure spring clamp terminals allow fast, vibration-resistant wiring.

Typical Applications

Well-suited for use in modular safety control systems across:

• Automated machinery such as conveyors, robots, or presses

• Packaging lines, material handling systems, and processing equipment

• OEM systems requiring high-level safety outputs to drive contactors or actuators

Summary

The SICK UE410-4RO4 enhances the Flexi Classic safety controller by adding four quality relay outputs and diagnostics capability—supporting complex safety logic without software. With top-tier safety certifications and flexible mounting, it’s a reliable and modular addition to any safety control system