Pepperl+Fuchs KCD2-SCS-2 2-Channel Signal Conditioner with SIL 2 Certification and Bidirectional SMART Communication

The KCD2-SCS-2 is a versatile 2-channel signal conditioner from Pepperl+Fuchs' K-System, specifically engineered for applications requiring either analog input or analog output functionality in safe area installations. Each channel can be independently configured as a transmitter power supply (powering 2-wire SMART transmitters) or a current driver (driving SMART I/P converters and positioners).

With a compact 12.5 mm width and 24 V DC power supply (via Power Rail or terminals), this device provides complete galvanic isolation between field and control circuits while supporting bidirectional SMART communication for intelligent field device configuration and diagnostics.

• Configurable Per Channel: Each channel can be independently configured via DIP switches as either a transmitter power supply or a current driver
• Bidirectional SMART Communication: Supports digital communication for SMART devices using current modulation
• 2-Channel Efficiency: Two independent channels in a single 12.5 mm housing maximizes panel space efficiency
• SIL 2 Certified: Safety Integrity Level 2 (SC 3) acc. to IEC/EN 61508 for safety-related applications
• DNV Marine Approval: Certified for marine applications — suitable for shipbuilding and offshore installations
• High Drive Capability: Provides ≥15 V at 20 mA in transmitter mode; drives loads up to 650 Ω in current driver mode
• Configurable Control Side Operation: Control side can be operated as current source or current sink
• Line Fault Detection: Identifies open field circuits for control system monitoring
• Wide Operating Temperature: Functions reliably from -40°C to +70°C

The KCD2-SCS-2 is a configurable signal conditioner for safe area applications. Each of the two channels can operate independently in either mode:

• Powers 2-wire SMART transmitters
• Transfers the 4...20 mA measurement signal from the field to the control system
• Provides bidirectional HART communication for transmitter configuration and diagnostics
• Minimum available voltage: 15 V at 20 mA ensures reliable transmitter operation
• Control side can be configured as current source or current sink via DIP switches

• Drives SMART I/P converters, valve positioners, and displays
• Repeats the 4...20 mA control signal from the PLC/DCS to the field device
• Supports bidirectional HART communication for positioner configuration and feedback
• Drives loads up to 650 Ω with ≥13 V at 20 mA
• Line fault detection identifies open field circuits for control system monitoring