Pepperl Fuchs KFD2-STC4-Ex1.2O Transmitter Power Supply (283674)
P&F KFD2-STC4-Ex1.2O is a 1-channel SMART transmitter power supply with dual analog outputs, functioning as a signal splitter. Designed for hazardous area installations, it supports 2-wire and 3-wire SMART transmitters or 2-wire current sources and transmits isolated 0/4–20 mA signals to two independent outputs. Supporting HART, BRAIN, and Foxboro protocols, this unit is SIL 3 certified for high-integrity safety applications.
Technical Specifications
- Model: KFD2-STC4-Ex1.2O
- Function: SMART Transmitter Power Supply with Signal Splitter
- Channels: 1 input / 2 outputs
- Input Signal: 0/4 … 20 mA
- Output Signal: 0/4 … 20 mA (overload > 25 mA)
- Power Supply: 20 … 35 V DC (via Power Rail or terminals)
- Signal Direction: Field to control side
- Mounting: 35 mm DIN rail (EN 60715)
- Connection Type: Screw terminals with integrated HART test sockets
Electrical Features
- Isolation: 3-way isolation (input/output/output/power)
- Signal Type: Analog 0/4–20 mA with HART, BRAIN, and Foxboro compatibility
- Load Resistance: 0 … 550 Ω per output
- Ripple: Max. 50 µA rms
- Transfer Accuracy: ≤ 10 µA at 20 °C
- Frequency Range: 0 … 7.5 kHz (bi-directional)
- Settling Time: 200 µs
- Rise/Fall Time: 20 µs
Environmental Conditions
- Temperature Range: -20 … 60 °C
- Protection: IP20
- Weight: Approx. 200 g
- Housing Type: B2 (20 x 124 x 115 mm)
- Approvals: ATEX, IECEx, UL, FM
Hazardous Area Compliance
- Zone Classification: Zone 0, 1, 2 / Div. 1, 2
- ATEX Marking: II (1) G [Ex ia Ga] IIC / II (1) D [Ex ia Da] IIIC / I (M1) [Ex ia Ma] I
- IECEx Marking: [Ex ia Ga] IIC, [Ex ia Da] IIIC, Ex nA IIC T4 Gc
- SIL Rating: SIL 3 compliant (IEC/EN 61508)
Key Features & Benefits
✅ Dual Output Splitter: Enables redundant signal routing to two destinations.
✅ Protocol Support: Fully compatible with HART, BRAIN, and Foxboro field devices.
✅ Test-Friendly Design: Built-in HART test sockets for diagnostics and maintenance.
✅ SIL 3 Certified: High-integrity signal isolation for safety-critical systems.
✅ Reliable Signal Integrity: 3-way galvanic isolation with minimal deviation.
📦 Buy Pepperl+Fuchs KFD2-STC4-Ex1.2O from Drive Outlet Megastore
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The ideal solution for safe and redundant signal transmission in Ex-rated environments — designed with advanced diagnostics and split output functionality.
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