Pepperl+Fuchs KFD2-SOT3-Ex1.LB Switch Amplifier (262106)

The P&F KFD2-SOT3-Ex1.LB is a 1-channel intrinsically safe switch amplifier designed for transferring NAMUR or dry contact signals from hazardous areas to safe zones. This model supports two passive, non-polarized transistor outputs and can be configured for signal or fault output via DIP switches. With built-in line fault detection (LFD), SIL 2 rating, and Power Rail compatibility, this module is ideal for safe signal isolation in compact process control installations.

Technical Specifications

• Model: KFD2-SOT3-Ex1.LB
• Type: Intrinsically Safe Switch Amplifier
• Input Type: NAMUR sensor or dry contact
• Output Type: 2 passive transistor outputs (configurable)
• Channels: 1
• Mounting: 35 mm DIN rail (EN 60715)

Input Specifications

• Input Terminals: 1+, 2+, 3-
• Standard: EN 60947-5-6 (NAMUR)
• Open Circuit Voltage: Approx. 10 V DC
• Short-Circuit Current: Approx. 8 mA
• Switching Point: 1.2 … 2.1 mA
• Hysteresis: Approx. 0.2 mA
• Line Fault Detection: Break ≤ 0.1 mA, Short ≥ 6.5 mA
• Pulse/Pause Ratio: Min. 100 µs

Output Specifications

• Output Terminals: 7, 8 and 8, 9
• Output Type: Passive transistor (non-polarized)
• Rated Voltage: 30 V DC
• Rated Current: 100 mA (short-circuit protected)
• Signal Level:
  • 1-signal: ≤ 3 V @ 100 mA
  • 0-signal: Off-state current ≤ 10 µA
• Response Time: ≤ 200 µs
• Switching Frequency: ≤ 5 kHz
• Output II: Configurable as signal or fault output

Power & Configuration

• Supply Voltage: 19 … 30 V DC
• Power Source: Power Rail or terminals 14+, 15-
• Rated Current: 20 … 15 mA
• Power Dissipation: ≤ 1 W
• Configuration: DIP switches
• Visual Indicators: LEDs (NAMUR NE44 compliant)

Galvanic Isolation

• Input/Output: Reinforced (300 Veff)
• Input/Power Supply: Reinforced (300 Veff)
• Output/Power Supply: Basic insulation (300 Veff)

Environmental & Mechanical

• Operating Temperature: -20 … 60 °C
• Degree of Protection: IP20
• Connection: Screw terminals
• Dimensions: 20 x 119 x 115 mm (W x H x D)
• Weight: Approx. 150 g

Certifications & Safety

• Safety Integrity Level: SIL 2 (SC 3) per IEC/EN 61508
• ATEX Marking:
  • II 3(1)G Ex nA [ia Ga] IIC T4 Gc
  • II (1)D [Ex ia Da] IIIC
  • I (M1) [Ex ia Ma] I
• IECEx Marking:
  • Ex nA [ia Ga] IIC T4 Gc
  • [Ex ia Da] IIIC
  • [Ex ia Ma] I
• Certificates: EXA 16 ATEX 0016 X, IECEx EXA 16.0009X
• Max Safe Voltage (Um): 253 V AC

Key Features & Benefits

✅ Dual Passive Transistor Outputs: Configurable for fault or signal indication.

✅ Intrinsic Safety Compliance: Certified for Ex zones and SIL 2 applications.

✅ Fast Response Time: 200 µs switching for real-time signal transfer.

✅ DIP Switch Configurable: Customize operation and LFD with ease.

✅ Compact DIN Form Factor: Only 20 mm wide for tight control cabinets.

📦 Buy Pepperl+Fuchs KFD2-SOT3-Ex1.LB from Drive Outlet Megastore

The KFD2-SOT3-Ex1.LB provides robust signal isolation and error diagnostics for hazardous area monitoring. Ideal for industries requiring SIL 2 compliance and flexible fault detection.

In stock now and available with 2–3 days delivery.

Contact us to place your order today.