Intrinsically Safe Galvanic Isolators

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Overview

Intrinsically Safe Galvanic Isolators	Accessories

Description

For applications involving sensor use in hazardous locations, Rockwell Automation offers a line of Intrinsic Galvanic Isolators, which offer economical solutions for instrumentation and control systems in hazardous locations as defined by NEC article 500 and CEC Part I, Section 18.

Intrinsically Safe or Galvanic Isolators are active protective interface assemblies that limit the amount of energy allowed to enter a hazardous area under fault conditions. Sometimes called Transformer Isolated Barriers, they separate intrinsically safe wiring from non–intrinsically safe wiring through the use of the same isolation coils found in power transformers as defined in FM Class No. 3610 and CSA 22.2 No. 157.

Galvanic isolators, unlike zener diode barriers, do not require grounding—therefore they may reduce ground loop problems as well as installation and maintenance costs. The solid state output version isolators can be located in a Division 2 area. The slim ¾ inch wide housing on DC models also conserves valuable mounting space, while providing 1500 Volt isolation between hazardous area and nonhazardous area terminals and 500 Volt isolation between input/output and external power terminals. DIP switches provide convenient programming of output and diagnostic functions while multiple LEDs provide visual indication of module and circuit status.

Rockwell Automation’s zener diode barriers and galvanic isolators are DIN-rail mountable and designed primarily for use with intrinsically safe proximity sensors and photoelectrics. All of Rockwell Automation’s barriers and isolators are FM and CENELEC approved, CSA certified and CE marked for all applicable directives.