KFA6-SR2-Ex1.W.LB. Switch Amplifier. PEPPERL+FUCHS. USED. Fresh & Good Condition. Supply-220VAC. 2 DIGITAL OUTPUT. Price-Negotiable.
Product Description — KFA6-SR2-Ex1.W.LB Switch Amplifier
The KFA6-SR2-Ex1.W.LB Switch Amplifier is a high-reliability intrinsically safe interface module designed for safe signal transmission between hazardous areas (Zone 0/1) and safe areas in industrial automation systems. Engineered for use with NAMUR sensors, mechanical contacts, and proximity switches, this Pepperl+Fuchs isolated barrier ensures accurate switching signal isolation while maintaining strict explosion protection compliance.
This switch amplifier provides galvanic isolation between field circuits and control systems such as PLCs, DCS, and relay logic controllers. The device converts signals from hazardous areas into safe, usable transistor outputs without allowing dangerous energy transfer back into explosive atmospheres. The module supports line fault detection (LFD), enabling operators to quickly identify open-circuit or short-circuit conditions in field wiring, reducing downtime and maintenance troubleshooting.
The slim DIN-rail mounted housing allows quick installation inside control panels while saving valuable cabinet space. LED status indicators provide clear visual diagnostics for power, switching status, and fault condition monitoring, allowing technicians to detect issues at a glance. Its robust industrial construction and wide operating temperature range ensure dependable performance even in harsh environments with vibration, electrical noise, and temperature variations.
The KFA6-SR2-Ex1.W.LB is compliant with international intrinsic safety and explosion-protection standards, making it suitable for global installations. By providing reliable signal isolation, fault monitoring, and protection against hazardous energy transfer, this switch amplifier enhances both plant safety and operational efficiency. It is an ideal solution for interfacing field-mounted sensors in hazardous locations with modern control systems while maintaining regulatory compliance and long-term system stability.
Technical Specifications & Catalogue Table
| Parameter | Specification |
|---|---|
| Product Model | KFA6-SR2-Ex1.W.LB |
| Product Type | Intrinsically Safe Switch Amplifier / Isolated Barrier |
| Manufacturer | Pepperl+Fuchs |
| Mounting | 35 mm DIN Rail Mount |
| Channels | 2-channel |
| Input Type | NAMUR sensors (EN 60947-5-6), mechanical contacts, proximity switches |
| Hazardous Area Classification | Suitable for Zone 0 / Zone 1 applications |
| Output | Transistor output (active switching output to PLC/DCS) |
| Supply Voltage | 19 – 30 V DC (typical 24 V DC) |
| Power Consumption | Approx. 1.5 W |
| Galvanic Isolation | Field circuit ↔ control circuit ↔ supply |
| Line Fault Detection (LFD) | Open-circuit & short-circuit monitoring |
| Status Indication | LED indicators (Power, Switching State, Fault) |
| Response Time | < 10 ms (typical) |
| Switching Frequency | Up to approx. 5 kHz (depending on sensor) |
| Operating Temperature | −20 °C to +60 °C |
| Housing Width | Approx. 12.5 mm slim module |
| Protection Class | IP20 (panel mounted) |
| Certifications | ATEX, IECEx, Intrinsically Safe approvals |
| Application | Oil & Gas, Chemical, Petrochemical, Pharma, Tank farms, Process Automation |
| Compliance Standards | EN 60079-0, EN 60079-11, EN 60947-5-6 |
| Diagnostic Features | Fault signaling via LED and output signal |
| Installation Location | Safe area control cabinet interfacing hazardous area field devices |