SICK FLN-EMSS0000105 | Flexi Loop Node for Dual-Channel EMSS Safety Switch (Safe Series Connection)
Key Overview
The FLN-EMSS0000105 is a modular node in SICK’s Flexi Loop Safe Series Connection system, designed to interface dual-channel equivalent electromechanical safety switches (EMSS) with the Flexi Soft safety controller series. This compact node ensures robust safety monitoring with full diagnostic capabilities in series-connected safety networks.
SICK
RS Components

Safety Features
High-Reliability Design: Certified to SIL 3 (IEC 61508), Category 4, and Performance Level e (EN ISO 13849-1)

Low Failure Rate: PFHD (Mean Probability of Dangerous Failure) of 0.76 ×10⁻⁹ per hour; 20-year mission time rating
SICK
RS Components

Comprehensive Diagnostics: Detects cross-circuit faults, short-circuit conditions, mismatch, and sequence errors within a Flexi Loop chain
SICK
RS Components

Technical Details
Interfaces:

EMSS Input: Female M12, 5-pin connector

Flexi Loop Input: Male M12, 5-pin connector

Flexi Loop Output: Female M12, 5-pin connector, enabling daisy-chaining or loop termination
SICK
RS Components

Power:

Supply: 24 V DC (16.8–30 V), PELV/SELV of Protection Class III

Current Consumption: ~55 mA
SICK

Dimensions & Protection:

Size: 68 × 48 × 18 mm; Weight: ~28 g
SICK

Enclosure Rating: IP65/IP67 for dust and water protection

Operating Temp: –25 °C to +55 °C; Storage: –25 °C to +70 °C
SICK

System Advantages
Scalable Safety Wiring: Connect up to 32 safety devices in series—reducing wiring complexity and controller input count. Flexi Loop allows series distances up to 3 km total with appropriate nodes
Motion World

Flexible Integration: Compatible with safety switches from different manufacturers, IP65-rated for rugged industrial use

Transparent Diagnostics: Fault notifications visible via the device, simplifying maintenance and reducing downtime
Motion World

Typical Applications
Series monitoring of multiple door or guard switches on large machines

Remote conveyor or safety zone monitoring with simplified cabling and high diagnostic clarity

OEM safety circuits where modular, scalable safety components are key

Quick Reference
Feature Specification
Safety Rating SIL 3, Cat 4, PL e
Diagnostic Capabilities Cross-circuit, short-circuit, mismatch detection
Connectivity EMSS input / Flexi Loop in/out (M12 5-pin)
Power Supply 24 V DC, 55 mA consumption
Protection & Build IP65/IP67, –25 to +55 °C, 68×48×18 mm
Mission Time (MTTFd) ≥ 20 years / PFHD 0.76×10⁻⁹ per hour

Summary
The SICK FLN-EMSS0000105 is a compact, high-integrity safety node that simplifies series safety switch connections and embeds advanced fault monitoring. Ideal for complex safety networks where minimised wiring, high safety standards, and diagnostic clarity are priorities.