KFD2-SR2-Ex1.W Switch Amplifier | Pepperl+Fuchs Hazardous
Manufacturer: Honeywell
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Part Number: KFD2-SR2-Ex1.W
Condition：New with Original Package
Product Type: Isolated Switch Amplifier
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The KFD2-SR2-Ex1.W Isolated Switch Amplifier from Pepperl+Fuchs is designed for safely transmitting signals from dry contact or NAMUR proximity sensors in hazardous areas to safe-area relay outputs. It provides galvanic isolation between input, output, and power circuits, ensuring both personnel and equipment safety in industrial process control environments.
This module features line fault detection (LFD), reversible operation modes, and supports up to SIL 2 (SC 3) according to IEC 61508/61511 standards. It is powered via a 24 V DC supply, commonly delivered through a Power Rail, and mounts efficiently on a DIN rail for compact and reliable integration. Moreover, its one-channel configuration can also function as a signal splitter, allowing one input to drive two outputs when needed.
The KFD2-SR2-Ex1.W is ideal for chemical, oil & gas, and other process industries where safety-critical signaling is required. Its robust relay output supports SPDT logic, while the fault relay output ensures immediate detection of open or short circuits, enabling prompt corrective action.
Key Features & Benefits
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Intrinsic Safety: Interfaces hazardous-area switches with safe-area relay outputs.
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SIL 2 Rated: Compliant with IEC 61508/61511 standards for safety-critical systems.
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Flexible Operation: Reversible mode supports NO/NC logic to match field device requirements.
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Line Fault Detection: Detects open or short circuits, improving process reliability.
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Signal Splitter Function: One input can drive two outputs simultaneously if required.
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Compact Installation: DIN rail mounting saves space and simplifies panel integration.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | KFD2-SR2-Ex1.W |
| Product Type | Isolated Switch Amplifier |
| Channels | 1-channel isolated barrier |
| Input Type | Dry contact or NAMUR proximity sensor |
| Input Location | Hazardous area |
| Output Type | Relay contact (SPDT) |
| Fault Output | Relay contact |
| Output Location | Safe area |
| Power Supply | 24 V DC via Power Rail |
| Line Fault Detection | Yes, detects open/short circuits |
| Mode of Operation | Reversible (NO/NC logic) |
| Safety Rating | SIL 2 (SC 3) per IEC/EN 61508 |
| Mounting Type | DIN rail |
| Isolation | Galvanic isolation between input/output/power |
| Operating Temperature | –20°C to +60°C |
| Dimensions (W × H × D) | 20 mm × 119 mm × 115 mm |
| Weight | 150 g |
| Certifications | ATEX, IECEx, FM, CSA |
FAQ
Q1: Can the KFD2-SR2-Ex1.W be used with NAMUR sensors?
Yes, it supports both dry contact switches and NAMUR proximity sensors in hazardous areas.
Q2: What safety certification does it meet?
The module is rated SIL 2 (SC 3) according to IEC 61508/61511 standards.
Q3: How is the module mounted?
It mounts easily on a DIN rail, saving panel space and simplifying installation.
Q4: Does it provide fault detection?
Yes, the module includes line fault detection (LFD) for open or short circuits.
Q5: Can it split signals to multiple outputs?
Yes, the KFD2-SR2-Ex1.W can operate as a signal splitter, one input driving two outputs.