Pepperl Fuchs WE77/Ex-2 115VAC Switch Amplifier 129200

Pepperl+Fuchs WE77/Ex-2 115VAC Switch Amplifier (Part No. 129200)

The Pepperl+Fuchs WE77/Ex-2 is a two-channel digital input switch amplifier designed to facilitate the safe transmission of digital signals into hazardous areas. It is compatible with sensors conforming to EN 60947-5-6 (NAMUR) standards or mechanical contacts as transmitters. The device ensures galvanic isolation and monitors the control circuit for lead breakage, enhancing operational safety.

Key Features

• Dual-Channel Input: Supports two digital input channels, allowing for versatile application in various industrial settings.
• Galvanic Isolation: Provides electrical isolation between input and output circuits, preventing interference and enhancing signal integrity.
• 115 V AC Supply Voltage: Operates efficiently within a supply voltage range of 103.5 to 126 V AC at 45 to 65 Hz.
• Relay Output: Each channel is equipped with a relay contact output (change-over contact), facilitating reliable signal transmission.
• Lead Breakage Monitoring: Continuously monitors the control circuit for lead breakage, ensuring system integrity and safety.
• Reversible Mode of Operation: Offers flexibility in operation modes to suit various application requirements.
• DIN Rail Mounting: Designed for easy installation on standard 35 mm DIN rails, simplifying integration into existing systems.
• Compact Design: Dimensions of 60 x 104 x 110 mm (2.4 x 4.1 x 4.3 inches) allow for space-efficient installation.
• IP20 Protection Rating: Provides protection against solid objects larger than 12.5 mm, suitable for indoor environments.

Technical Specifications

• Power Dissipation: Approximately 2.5 W, ensuring energy-efficient operation.
• Operating Temperature Range: -20 to 60 °C (-4 to 140 °F), suitable for various industrial environments.
• Connection Type: Screw terminals for secure and reliable wiring connections.
• Weight: Approximately 0.393 kg (each), facilitating easy handling and installation.

The WE77/Ex-2 switch amplifier is ideal for industrial and commercial applications requiring intrinsically safe control circuits to operate field devices within hazardous areas. Its stable transfer characteristics over extended periods eliminate the need for regular adjustments, making it a reliable component in safety-critical systems.