Pepperl+Fuchs
Pepperl+Fuchs KFD2-STC4-Ex2 – 2-Channel SMART Transmitter Power Supply
Pepperl+Fuchs KFD2-STC4-Ex2 – 2-Channel SMART Transmitter Power Supply
Manufacturer part number: KFD2-STC4-Ex2
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ENQUIRE NOWProduct Overview
The Pepperl+Fuchs KFD2-STC4-Ex2 is a 2-channel isolated barrier SMART transmitter power supply. Each channel powers a 2-wire SMART transmitter in the hazardous area and repeats its 0/4 … 20 mA signal to the safe area, giving two independent analogue loops in one 20 mm wide K-System module.
HART communication is passed bi-directionally, and terminals with test points support commissioning and maintenance. The unit is supplied at 24 V DC via the Power Rail, is ATEX and IECEx certified for [Ex ia] inputs and is suitable for applications up to SIL 2 to IEC/EN 61508.
Key Features
- Manufacturer: Pepperl+Fuchs
- Model: KFD2-STC4-Ex2
- Product type: 2-Channel SMART Transmitter Power Supply
- 2-channel isolated barrier
- Supplies 2-wire SMART transmitters
- 0/4 … 20 mA output per channel
- HART signals transferred bi-directionally
- Terminals with test points
- 24 V DC supply via Power Rail
- Up to SIL 2 to IEC/EN 61508
Technical Specifications
| Manufacturer | Pepperl+Fuchs |
|---|---|
| Part number | KFD2-STC4-Ex2 |
| Product type | 2-channel SMART transmitter power supply / isolated barrier |
| Signal type | Analogue input |
| Rated supply voltage | 20 … 35 V DC (Power Rail or terminals 14+, 15-) |
| Power consumption | max. 2.7 W |
| Input signal | 0/4 … 20 mA from 2-wire transmitters (terminals 1+, 3-; 4+, 6-) |
| Available voltage | ≥ 16 V at 20 mA |
| Output signal | 0/4 … 20 mA per channel (overload > 25 mA) |
| Load | 0 … 550 Ω at 20 mA |
| Deviation | ≤ 10 µA at 20 °C |
| Functional safety | SIL 2 (IEC/EN 61508) |
| Ambient temperature | -20 … 60 °C |
| Degree of protection | IP20 |
| Dimensions | 20 x 124 x 115 mm (W x H x D), housing type B2 |
| Mass | approx. 150 g |
| Mounting | 35 mm DIN mounting rail (EN 60715) |
| ATEX | BAS 99 ATEX 7025 X — II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I; TÜV 99 ATEX 1499 X — II 3G Ex nA II T4 |
| IECEx | IECEx BAS 04.0015X, IECEx CML 15.0055X |
| Other approvals | UL (E106378) |
Specifications are taken from Pepperl+Fuchs manufacturer data. Always confirm critical values — particularly hazardous-area and functional-safety data — against the current datasheet, certificates and instruction manual before installation.
Applications
- Two analogue transmitter loops per module
- Pressure, level and temperature transmitters in Ex zones
- HART asset management access
- SIL 2 measurement loops
Installation and Compatibility
DIN rail mounting with 24 V DC from the Power Rail. Transmitters connect to terminals 1+/3- (channel I) and 4+/6- (channel II); outputs are on 7-/8+ and 10-/11+. Observe the certificate and safety manual for intrinsically safe loop design.
Frequently Asked Questions
What is the Pepperl+Fuchs KFD2-STC4-Ex2?
The Pepperl+Fuchs KFD2-STC4-Ex2 is a 2-channel isolated barrier SMART transmitter power supply. Each channel powers a 2-wire SMART transmitter in the hazardous area and repeats its 0/4 … 20 mA signal to the safe area, giving two independent analogue loops in one 20 mm wide K-System module.
What supply does the KFD2-STC4-Ex2 need?
20 … 35 V DC (Power Rail or terminals 14+, 15-).
How do I get a price for the KFD2-STC4-Ex2?
This product is sold on a price on availability basis. Use the enquiry form on this page with your quantity and application details and the Valves UK team will reply with pricing and lead time.
Technical Documentation
- Pepperl+Fuchs KFD2-STC4-Ex2 datasheet (PDF)
- KFD2-STC4-Ex2 on the Pepperl+Fuchs website (certificates, manuals and drawings)
Related Products
- Pepperl+Fuchs KFD2-STC4-Ex1 – SMART Transmitter Power Supply
- Pepperl+Fuchs KFD2-STC5-Ex2 – 2-Channel SMART Transmitter Power Supply
- View the full Pepperl+Fuchs range at Valves UK
Price and Availability
Price on Availability (POA)
Contact Valves UK for pricing, product availability and technical enquiries regarding the Pepperl+Fuchs KFD2-STC4-Ex2. Please include your required quantity and any relevant application details when submitting your enquiry.
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This product is supplied on a price on availability (POA) basis. Complete the form below and the Valves UK team will reply with pricing, availability and technical support.