Weidmuller 8965350000 ACT20X-HDI-SDO-RNC-S ACT20X Isolating Switch Amplifier

Description

Designed for intrinsically safe signal processing, the Weidmuller 8965350000 functions as a high-reliability isolating switch amplifier within the ACT20X series. This module is engineered to safely isolate and transmit digital signals from hazardous areas (Zone 0, 1, 2) to safe-area control environments. It supports inputs from NAMUR sensors or mechanical switch contacts and converts them into relay outputs.

The ACT20X-HDI-SDO-RNC-S features comprehensive galvanic isolation between the input, output, and power supply circuits, ensuring superior signal integrity and system protection. Configuration is managed via standard FDT/DTM software, allowing operators to easily set parameters, monitor device status, and configure line fault detection (LFD) for open-circuit or short-circuit conditions.

Features

• Intrinsically safe digital inputs compatible with NAMUR sensors and mechanical switches.
• Relay output configuration for reliable safe-area signal switching.
• Galvanic isolation across input, output, and power supply channels.
• Software-based configuration utilizing standard FDT/DTM tools.
• Integrated line fault detection (LFD) to identify open and short circuits in the field wiring.
• Compact 22.5 mm housing designed for standard DIN-rail mounting.

Applications

• Oil and gas processing and refining facilities.
• Chemical and petrochemical manufacturing plants.
• Water and wastewater treatment systems.
• Power generation and distribution utilities.
• Hazardous area signal isolation and safety instrumented systems (SIS).

Technical Specifications

Installation Guidelines

• Mounting: Snap securely onto a standard TS 35 DIN rail in a vertical orientation to optimize heat dissipation.
• Wiring Separation: Maintain a minimum physical distance of 50 mm between intrinsically safe (Ex i) field wiring and non-intrinsically safe wiring.
• Grounding: Ensure the DIN rail is properly bonded to the functional earth ground of the control cabinet.
• Cabinet Protection: For installation in Zone 2 environments, the module must be mounted inside an enclosure providing a minimum protection rating of IP54.

Compliance and Certifications

• ATEX
• IECEx
• CE
• UL