The Pepperl+Fuchs KCD2-SCS-Ex2 serves as the primary KCD2-SCS-Ex2 Signal Conditioner utilized to execute bidirectional HART signal transmission and galvanic isolation across intrinsically safe field loop platforms.

Model Nomenclature & Structural Code

• KC: KC-System high-density 12.5 mm housing platform
• D2: Dual-channel compact signal isolation architecture
• SCS: SMART transmitter power supply and current driver operational topology
• Ex: Intrinsic safety isolated barrier certification for hazardous locations
• 2: Dual independent circuit channel configuration

Electrical & Physical Attributes

Protective Barrier Architecture & Network Integrity

The module utilizes integrated intrinsic safety (Ex i) barriers to enforce strict energy limitation within hazardous areas. Engineered for maximum DIN-rail mounting stability, the narrow 12.5 mm enclosure maintains physical alignment under continuous panel vibration. Internal protective networks enforce defined surge voltage protection limits to prevent field transients from penetrating control loops, maintaining low protocol conversion latencies during high-frequency bidirectional HART communication passes.

Delivery Package Details

• 1 x KCD2-SCS-Ex2 Signal Conditioner Module
• 2 x Removable Screw Terminal Connectors
• 1 x Technical Installation Guide

Control Panel Cabinet Wiring Guidelines

DIN-Rail Enclosure Mounting

• Position the module on a standard 35 mm DIN mounting rail or Power Rail bus structure inside an IP54 rated enclosure.
• Engage the top rear mounting hook and press the lower body firmly until the retention clip snaps completely into place.

Terminal Wiring Architecture

• Attach intrinsically safe field cables from Zone 0/1 transmitters strictly to the blue terminals 1 to 4 on the top side.
• Connect non-intrinsically safe control system I/O cables to the green terminals 5 to 8 on the bottom side, maintaining a 50 mm clearance from hazardous wiring.

Technical Questions & Answers

• What primary operational modes does each channel support?

  Each channel functions independently as either a SMART transmitter power supply or a SMART current driver for field actuators.

• Is external auxiliary power required when operating in current driver mode?

  Yes, the module requires a nominal 24 VDC auxiliary supply connected via the bottom power terminals or the Power Rail bus.

• What signal frequency range is maintained for HART communication pass-through?

  The internal conversion stages transmit bidirectional HART digital signals superimposed over the 0/4 mA to 20 mA analog loop.

• Can this module be installed directly in ATEX Zone 2 areas?

  Yes, the unit is certified for installation in Zone 2 / Class I, Div 2 areas when mounted inside an appropriately rated enclosure.

• What is the channel packing density on the DIN mounting rail?

  The ultra-thin 12.5 mm housing provides two fully isolated Ex i channels within a single modular footprint.

• How are field loop fault conditions indicated on the module front panel?

  Front-mounted red LED indicators illuminate to signal open-circuit or short-circuit line faults on individual field channels.

• What mechanical step is required to remove terminal blocks during maintenance?

  Insert a small flat-blade screwdriver into the terminal release slot to unlatch and pull the plug connector straight out.

• What shielding standard must be applied to field analog wiring?

  Field cables must use twisted-pair shielded conductors with the shield grounded at a single dedicated point on the safe-side earth bar.