Overview

The Pepperl+Fuchs KCD2‑SCD‑1 Safety Barrier is part of the K‑System DIN rail mounting series. It provides a 24 V DC supply via Power Rail and drives current into field devices such as valve positioners and I/P converters located in hazardous areas. Moreover, it repeats the input signal from the control system to the field with galvanic isolation, ensuring safe and reliable operation. In addition, the module supports HART® communication, allowing digital signals to be superimposed on the analog loop for diagnostics and configuration.

Engineers value the KCD2‑SCD‑1 because it combines compact design (12.5 mm housing width) with functional safety up to SIL 2 (SC 3) according to IEC/EN 61508. Therefore, it is widely adopted in oil, gas, chemical, and pharmaceutical industries where intrinsic safety and long-term reliability are mandatory.

Technical Data

Typical Applications

• Hazardous-area valve positioners requiring intrinsic safety barriers

• I/P converters in chemical plants and refineries

• Pharmaceutical manufacturing where precise current driving is critical

• Oil and gas platforms needing safe and reliable analog signal isolation

• Automation projects integrating HART® diagnostics into control systems

For example, offshore operators deploy the KCD2‑SCD‑1 to ensure safe signal transmission to valve positioners, while pharmaceutical manufacturers rely on its SIL 2 compliance to meet strict safety standards.

FAQ

Q1: What is the main function of the KCD2‑SCD‑1?
A1: It drives current into hazardous-area devices such as valve positioners and I/P converters with intrinsic safety.

Q2: Does it support HART® communication?
A2: Yes, it allows HART® signals to pass through the analog loop for diagnostics and configuration.

Q3: How compact is the device?
A3: Its housing width is only 12.5 mm, saving valuable DIN rail space.

Q4: What safety certifications does it carry?
A4: It is ATEX, IECEx, and CE certified, with SIL 2 functional safety compliance.

Q5: Which industries benefit most from this product?
A5: Oil and gas, chemical processing, pharmaceuticals, and general process automation.