Pepperl Fuchs KFD0-CS-Ex1.54 SMART Repeater (70185883)

P&F KFD0-CS-Ex1.54 is a 1-channel loop-powered isolated barrier designed for SMART-compatible fire alarm and smoke detection transmitters in hazardous zones. It supports bidirectional transfer of analog and digital signals, with a compact 20 mm housing, intrinsic safety, and SIL 3 compliance. Ideal for installations requiring safe current transfer and signal integrity in Ex environments.

Technical Specifications

• Model: KFD0-CS-Ex1.54
• Function: SMART fire alarm repeater (analog + digital signal transfer)
• Channels: 1
• Signal Type: Analog input with digital signal superposition
• Input Current: 1 … 20 mA
• Power Supply: Loop-powered (0 … 24 V DC)
• SIL Rating: SIL 3 compliant (IEC/EN 61508)

Electrical Features

• Transmission Range: Voltage: 4 … 20 V DC / 0 … 6 Vpp AC
• Input Rise/Fall Time: ≤ 50 µs (load ≥ 1 mA)
• Voltage Drop: Uout ≥ Uin – (0.41 × Iin in mA) – 0.5 V
• Control Circuit Output: 0 … 24 V DC / 0 … 20 mA
• Current Limit: Max. 35 mA
• Deviation: ≤ 3.5 mA current loss at 20 mA load
• Temperature Drift: ±20 µA/K

Environmental Conditions

• Operating Temperature: -20 … 60 °C (-4 … 140 °F)
• Degree of Protection: IP20
• Mounting: 35 mm DIN rail (EN 60715)
• Connection: Screw terminals
• Dimensions: 20 x 107 x 115 mm (W x H x D)
• Weight: Approx. 100 g

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
• IECEx Marking: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
• SIL Level: SIL 3 certified
• Galvanic Isolation: 375 V peak, input to output
• Maximum Safe Voltage (Um): 253 V

Key Features & Benefits

✅ SMART Fire Alarm Input: Supports analog and digital signal transfer from alarm devices.

✅ Loop Powered: Operates directly on signal loop – no separate power needed.

✅ Fast Response: Digital signal rise/fall ≤ 50 μs.

✅ IEC/EN 61508 SIL 3: Ultra-reliable for critical safety systems.

✅ Compact Design: Slim 20 mm width for tight enclosures.

📦 Buy Pepperl+Fuchs KFD0-CS-Ex1.54 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable KFD0-CS-Ex1.54 prices.

Perfect for SMART fire alarm signal processing in hazardous zones with SIL 3 safety assurance and loop-powered simplicity.

In stock now – fast UK delivery available with full documentation support.

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