Pepperl+Fuchs KFD2-SL2-Ex2 | 2-Channel Solenoid Driver for

Pepperl+Fuchs KFD2-SL2-Ex2 | Intrinsically Safe Solenoid Driver with Line Fault Detection

Overview

The Pepperl+Fuchs KFD2-SL2-Ex2 is a 2-channel isolated barrier solenoid driver engineered for use in intrinsically safe applications. It delivers up to 45 mA at 11.7 V DC to field devices like solenoids, LEDs, or sounders in hazardous zones.

Equipped with non-polarized logic inputs, line fault detection (LFD), and certified up to SIL 2 (IEC/EN 61508), this unit provides reliable, safe switching in mission-critical process automation environments.

Key Features

• Dual Output Channels – Drives two solenoids or indicators in hazardous zones

• Logic Inputs (Non-Polarized) – Accepts standard 24 V DC signals

• Output per Channel: 45 mA at 11.7 V DC

• Built-in Line Fault Detection – Monitors for short/open circuits

• SIL 2 Certified – Ideal for safety-critical operations

• LED Indicators – Visual diagnostics for power, status, and faults

• DIN Rail Mountable – 20 mm slim housing for control cabinets

Technical Specifications

• Model: KFD2-SL2-Ex2

• Power Supply: 20 to 30 V DC

• Power Consumption: Max. 3.3 W (at 45 mA output)

• Input Type: Logic signal (16–30 V for ON; 0–5 V for OFF)

• Input Current: ~3 mA at 24 V DC

• Channels: 2 (independently controlled)

• Output:

  • Voltage: ≥ 11.7 V DC

  • Current: ≤ 45 mA

  • Internal Resistance: 272 Ω

• Switching Delay: ≤ 20 ms

• Line Fault Detection Thresholds:

  • Short circuit: < 50 Ω

  • Open circuit: > 10 kΩ

  • Test current: < 650 μA

• Isolation:

  • Reinforced insulation between input, output, and power

  • Rated insulation voltage: 300 Veff

• Ambient Temp Range: -20 °C to +60 °C

• Protection Class: IP20

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

• Mounting: 35 mm DIN rail (EN 60715)

• Certifications: ATEX, IECEx, SIL 2 (IEC/EN 61508)

Applications

• Process Automation – Operates actuators and indicators in hazardous area loops

• Chemical & Oil Industries – Provides safety control for solenoids and alarms

• SIS Systems – Integrates into safety instrumented systems requiring SIL 2 compliance

• Field Device Control – Reliable energization of coils, buzzers, or lights in explosive zones

Why Choose the Pepperl+Fuchs KFD2-SL2-Ex2?

• Dual-channel design saves space and wiring

• Built-in diagnostics for quick fault identification

• Certified safe for explosive atmospheres

• Meets SIL 2 standards for process safety systems

• Efficient logic-level control for field devices

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NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply