PEPPERL+FUCHS – KFD2-SR2-EX2.W – P.N. 132960

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The Pepperl+Fuchs KFD2-SR2-EX2.W (P.N. 132960) is a high-performance signal conditioner and isolator designed for hazardous areas, offering advanced safety and signal processing capabilities.

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1. Core Specifications

Category	Specification
Type	Intrinsically safe signal isolator (Ex-i)
Input Signals	2x 4-20mA (galvanically isolated)
Output Signals	2x 4-20mA (active/passive configurable)
Power Supply	20-30V DC (24V typical)
Isolation	1500V AC (input/output/power)
Accuracy	±0.1% of span
Response Time	<50ms
Operating Temp.	-20°C to +60°C
Protection Rating	IP20

2. Hazardous Area Certifications

ATEX/IECEx: Ex ia IIC T6 Ga / Ex ia IIIC T85°C Da
FM/CSA: Class I, Division 1 / Zone 0
SIL Compliance: IEC 61508 (SIL 3 capable)

3. Key Features

Dual-Channel Isolation: Independent processing for 2 signals
Advanced Diagnostics:
- LED status indicators (power, signal, fault)
- Open/short circuit detection
Configuration Options:
- DIP switch settings for input/output behavior
- Reverse polarity protection
Modular Design:
- DIN rail mounting (35mm)
- 12.5mm width per channel

4. Wiring Configuration

Input+  Input-  Output+  Output-
 |        |        |        |
[4-20mA]      [4-20mA to PLC]

Channel 2: (identical configuration)

5. Applications

Process Automation: Oil & gas, chemical plants
Safety Systems: SIL-rated loops
Signal Conversion: Interface between Ex and non-Ex zones

6. Ordering Information

Lead Time: 3-5 weeks (standard production)
Accessories:
- KF-1FSB-EX1 (Fieldbarrier for Ex zones)
- KFD2-CSH-EX1 (Communication module)