Pepperl+fuchs Kfd2-scd2-1.lk Smart Current Driver 126755

What is the KFD2-SCD2-1.LK Smart Current Driver?

The KFD2-SCD2-1.LK forms part of Pepperl+Fuchs’ famous K-System of isolated signal conditioners and barriers. The device is a smart current driver to convert analog signals to control systems with utmost accuracy while maintaining electrical isolation and explosion protection.

This device is frequently utilized in applications concerning intrinsically safe circuits (Ex i) in Zone 2 (Class I, Div. 2) hazardous environments. It works as a one-channel signal isolator to transmit analog control signals – commonly 4…20 mA – to field devices like I/P converters, valves, or positioners.

Features and Specifications:

Model: KFD2-SCD2-1.LK

Maker: Pepperl+Fuchs

Part Number: 126755

Function: Smart Current Driver

Input/Output: 4…20 mA, loop-powered

Diagnostic Features: Line fault detection (LFD), lead breakage, short circuit

Mounting: DIN rail mountable

Power Supply: 20 to 30 V DC through Power Rail or terminals

Signal Direction: Field device to control system

Output Type: Active output (non-isolated) or passive mode available

Field Circuit Isolation: 2-port isolation

Housing: Slim and modular for simple panel integration

Ambient Temperature: -20 °C to +60 °C

Safety Certifications: ATEX, IECEx, CSA, and FM approvals

Advantages of Using the KFD2-SCD2-1.LK

1. Intrinsically Safe Signal Transmission
The device provides secure operation within explosive atmospheres, minimizing risk and adherence to global safety standards.

2. High Signal Integrity
Its accurate signal conversion and reliable transmission, the KFD2-SCD2-1.LK provides reliable performance without compromise or noise.

3. Built-in Diagnostics
Its intelligent diagnostics assist in detecting and reporting open loops or shorts – essential to avoiding downtime within process systems.

4. Compact and Efficient Design
Its DIN rail mountable design conserves panel space, makes installation and maintenance easier.

5. Output Mode Flexibility
It offers active or passive output mode selection, enabling it to find wide applications in numerous control system designs.

Applications

The KFD2-SCD2-1.LK is a critical component in industries requiring accurate control under hazardous environments, such as:

Chemical Plants – To control valve positioners and actuators safely and reliably.

Oil & Gas – Safe transmission of signals in restricted areas.

Pharmaceuticals – Where precision and explosion protection are needed.

Water Treatment Plants – For the transmission of analog signals through isolation barriers.

Why Pepperl+Fuchs?

Pepperl+Fuchs is the world’s leading developer and manufacturer of industrial automation technology and explosion protection equipment. Their K-System barriers are famous for reliability, modularity, and the capacity to keep running safely in the harshest of conditions. With the KFD2-SCD2-1.LK, you’re not purchasing a signal isolator—you’re investing in safety, performance, and a clear mind.