Weidmuller 8965340000 ACT20X-HDI-SDO-RNO-S Isolating Switch Amplifier

Description

Processing digital signals from hazardous zones requires robust galvanic isolation and signal conditioning. The Weidmuller 8965340000 functions as an intrinsically safe isolating switch amplifier designed to interface NAMUR sensors or mechanical contacts located in Ex zones 0, 1, and 2 with safe-area controllers. This dual-channel module provides reliable signal transmission while ensuring complete electrical isolation between the input, output, and power supply circuits. Configurable via FDT/DTM software, the device allows for precise parameterization of line monitoring (wire break and short-circuit detection) and output behavior.

Features

• Dual-channel signal transmission for space-saving DIN rail installation.
• Intrinsically safe input circuits compatible with NAMUR sensors (EN 60947-5-6) and dry contacts.
• Relay outputs (normally open) for switching AC/DC loads.
• Comprehensive line fault detection (LFD) for identifying short circuits or cable breaks.
• Galvanic 3-way isolation between input, output, and power supply.
• FDT/DTM software configuration for flexible parameter adjustments.

Applications

• Chemical and petrochemical processing plants
• Oil and gas extraction and refining facilities
• Wastewater treatment and hazardous material storage
• Power generation and distribution systems

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mounting: Snap-on mounting onto standard TS 35 DIN rails.
• Wiring: Use screw terminals with appropriate wire cross-sections. Ensure intrinsic safety separation rules are followed (minimum 50 mm distance between Ex-i and non-Ex-i wiring).
• Grounding: Ensure the DIN rail is properly grounded to maintain signal integrity and safety compliance.
• Ventilation: Maintain adequate clearance around the module to prevent heat buildup.

Compliance and Certifications

• ATEX
• IECEx
• CE
• cULus