Pepperl+Fuchs KFD2-SR2-Ex2.W Switch Amplifier

High-Performance Switch Amplifier for Hazardous Areas

The Pepperl+Fuchs KFD2-SR2-Ex2.W Switch Amplifier is a reliable solution for hazardous environments. It ensures SIL 2 compliance for high safety standards in industrial automation systems.

Power Supply and Input

This module operates at a rated voltage of 20-30 V DC with a low power consumption of less than 1.3 W. It supports NAMUR input with open circuit voltage of about 8 V DC, ideal for reliable signal detection.

Output and Contact Load

The KFD2-SR2-Ex2.W provides two relay outputs that can handle up to 253 V AC and 2 A for resistive loads. The module also supports minimum switch current of 2 mA at 24 V DC, ensuring smooth operation in industrial control systems.

Safety Certifications and Approvals

With certifications such as ATEX and IECEx, this switch amplifier is suitable for use in explosive atmospheres. It provides galvanic isolation, ensuring safe and reliable operation in hazardous areas.

Technical Specifications

Specification	Details
Safety Integrity Level (SIL)	SIL 2
Rated Voltage	20 … 30 V DC
Power Consumption	< 1.3 W
Input Voltage	Approx. 8 V DC
Input Current	8 mA (open circuit)
Output Contact Loading	253 V AC/2 A, 40 V DC/2 A (resistive)
Switching Frequency	≤ 10 Hz
Ambient Temperature	-20 … 60 °C
Protection Degree	IP20
Weight	Approx. 150 g
Dimensions	20 x 119 x 115 mm (W x H x D)
Mounting	35 mm DIN rail

Hazardous Area Certifications

The KFD2-SR2-Ex2.W is certified for Ex ia Ga, Ex ia Da, and Ex ia Ma zones, ensuring its suitability for hazardous applications. It complies with ATEX and IECEx standards for safety in explosive environments.