Pepperl+Fuchs Solenoid Driver KFD2-SH-Ex1.T.OP

Key Features & Benefits

The core advantage of the KFD2 series lies in its function as an isolated barrier, which ensures intrinsic safety by effectively isolating the control side from the hazardous field side, preventing dangerous energy from reaching the field. Key features and benefits include:

• High Safety: The series meets stringent safety certifications. Most models are rated up to SIL 2 or SIL 3 (according to IEC/EN 61508), making them suitable for applications with the highest safety requirements.

• Flexible Channel Configuration: Available in single‑channel and dual‑channel versions, allowing optimal system cost tailoring based on the number of field devices.

• Reliable Power Supply: Powered by 24 V DC and compatible with Power Rail or terminal block wiring for easy system integration and cabling.

• Intelligent Diagnostics & Maintenance:

  • Line Fault Transparency (LFT): Transparently transmits field-side line faults (e.g., short circuit, open circuit) to the control system for rapid diagnosis.

  • Line Fault Detection (LFD): Some models include this active monitoring feature.

  • Test Pulse Immunity: Reliably handles test pulses from digital output (DO) modules to avoid spurious tripping.

• Convenient Settings & Indication:

  • Parameter configuration via DIP switches on the device – simple and intuitive.

  • Front‑panel LED indicators provide clear visual status and fault signalling.

• Compact & Rugged Design: Housed in a B2‑type enclosure with a width of only 20 mm and mounts on a 35 mm DIN rail, saving valuable cabinet space. Operating temperature range is typically –20 °C to +60 °C.

Main Models & Selection Guide

The KFD2 series includes multiple variants to suit different application needs. The following table compares key representative models:

Note: Model KFD2‑SL2‑Ex1.LK is discontinued and has been replaced by the new model KCD2‑SLD‑Ex1.1245.

Technical Specifications Overview (Example: KFD2‑SLD‑Ex1.13100)

• Power Supply: Rated voltage Ur = 19 … 30 V DC (loop‑powered).

• Input:

  • Logic signal: 1 signal = 15…30 V DC; 0 signal = 0…5 V DC.

  • Input current: approx. 6 mA @ 24 V DC.

• Output:

  • Internal resistance Ri: approx. 64 Ω.

  • Current Ie: typical 100 mA.

  • Voltage Ue: ≥ 13 V.

  • Current limit Imax: 105 mA.

• Switching Characteristics:

  • Switching frequency f: max. 2 Hz.

  • Switch‑on/off delay: 30 ms / 30 ms.

• Physical Specifications:

  • Dimensions (W x H x D): 20 x 119 x 115 mm.

  • Weight: approx. 200 g.

Typical Applications

• Industries with explosive gas or dust atmospheres, such as oil & gas, chemical, and petrochemical.

• Process automation systems for remote valve control.

• Safety Instrumented Systems (SIS) as the actuating element (e.g., emergency shutdown valves) driver.

Approvals & Standards

The KFD2 series complies with multiple international standards, including:

• Explosion protection: ATEX, IECEx, e.g., II 3(1)G Ex ec [ia Ga] IIC T4 Gc.

• Electromagnetic Compatibility (EMC): Complies with EN 61326‑1 and other industrial location standards.

• Functional Safety: Complies with IEC/EN 61508, achieving SIL 2 or SIL 3 levels.