Pepperl Fuchs KFD2-STC4-Ex1 Transmitter Power Supply (283672)
P&F KFD2-STC4-Ex1 is a 1-channel SMART transmitter power supply designed for intrinsically safe signal transfer from 2-wire and 3-wire transmitters and SMART current sources. It converts analog input signals into isolated 0/4–20 mA outputs for safe area applications, while supporting HART, BRAIN, and Foxboro communication. With internal resistance for reliable HART communication, SIL 2 compliance, and fast response times, it ensures high-integrity loop performance in Ex environments.
Technical Specifications
- Model: KFD2-STC4-Ex1
- Function: SMART Transmitter Power Supply
- Channels: 1
- 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 points
Electrical Features
- Isolation: 3-way isolation between input/output/power
- Operating Modes: Analog current transmission with HART support
- Signal Type: Analog 0/4–20 mA with HART, BRAIN, and Foxboro compatibility
- Load Resistance: 0 … 800 Ω at 20 mA
- 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 2 compliant (IEC/EN 61508)
Key Features & Benefits
✅ Universal Input: Supports 2-wire/3-wire transmitters and SMART current sources.
✅ Signal Integrity: Isolated 0/4–20 mA output with high accuracy.
✅ Protocol Compatible: Works with HART, BRAIN, and Foxboro.
✅ Fast Dynamics: 200 µs settling and 7.5 kHz bandwidth.
✅ SIL 2 Certified: Proven performance in safety-related systems.
📦 Buy Pepperl+Fuchs KFD2-STC4-Ex1 from Drive Outlet Megastore
At Drive Outlet Megastore we offer unbeatable KFD2-STC4-Ex1 prices.
Dependable loop isolation and SMART signal transmission in Ex areas—ideal for demanding industrial analog signal chains.
In stock now and fast delivery available.
Reviews
There are no reviews yet.