Description

The Pepperl+Fuchs KCD2-SOT-Ex1.LB is a 1-channel isolated barrier designed for intrinsic safety applications to transfer digital signals from hazardous areas to safe areas. This device features a single field-side digital input that controls two passive transistor outputs on the control side. Configurable via DIP switches, the unit can function as a signal splitter (1 input and 2 outputs) or assign its second transistor output as an error indicator. The KCD2-SOT-Ex1.LB switch amplifier supports line fault detection (LFD) for monitoring lead breakage and short circuits, and processes signals from dry contacts or NAMUR sensors according to EN 60947-5-6.

Features

• 1-channel isolated barrier for intrinsic safety applications
• 24 V DC supply via removable screw terminals or Power Rail
• Dry contact or NAMUR sensor input
• 2 passive transistor outputs with reversible mode of operation
• Usable as a signal splitter (1 input to 2 outputs)
• Line fault detection (LFD) for lead breakage and short-circuit monitoring
• Collective error message output via Power Rail
• Front-accessible DIP switches for operational mode and fault detection configuration
• Compact 12.5 mm housing width for DIN mounting rail installation
• Up to SIL 2 (SC 3) safety evaluation according to IEC/EN 61508

Applications

• Intrinsic safety signal isolation and processing in hazardous areas
• Signal splitting from a single field sensor to multiple control devices
• Interface conversion for NAMUR proximity sensors and discrete dry contact switches
• Status monitoring and line fault detection in DCS, SIS, and PLC automation loops

Technical Specifications

Connections/Interfaces

Installation Guidelines

• DIN Rail Mounting: Snap the module onto a 35 mm DIN mounting rail complying with EN 60715:2001.
• Wiring Requirements: Connect hazardous area field wiring to the top blue removable terminal block (terminals 1+, 2-). Connect safe area output and power wiring to the bottom green removable terminal blocks.
• Power Supply: Supply 19 ... 30 V DC via screw terminals 9+ and 10- or directly through the Power Rail system.
• Configuration: Set front DIP switches (S1, S2, S3) to select output active mode, assign output II function, and enable or disable line fault detection.
• Hazardous Area Precautions: Ensure intrinsic safety parameters (Uo = 10.5 V, Io = 17.1 mA, Po = 45 mW) match field device specifications and maximum safe voltage (Um = 253 V AC) limits are respected.

Compliance and Certifications

• Safety Integrity Level: SIL 2, Systematic Capability SC 3 acc. to IEC/EN 61508
• ATEX Certification: BASEEFA 13 ATEX 0080, CML 19 ATEX 4410 X
• ATEX Marking: II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I, II 3G Ex ec IIC T4 Gc
• IECEx Certification: IECEx BAS 13.0046, IECEx CML 19.0147X
• IECEx Marking: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I, Ex ec IIC T4 Gc
• UL Approval: Control drawing 116-0374 (cULus)
• Electromagnetic Compatibility: Directive 2014/30/EU, EN 61326-1:2013, NE 21:2011
• Protection Standards: IEC 60529:2001 (IP20), IEC 61010-1:2010
• Input Standard: EN 60947-5-6:2000