EC: DeltaV Intrinsic Safety CHARMs
Building on its innovative Electronic Marshalling and single-channel characterization module (CHARM) technology, Emerson Process Management introduces its latest offering, intrinsically safe (IS) CHARMs.
Electronic Marshalling with CHARMs is a key component of Emerson’s I/O on Demand strategy, which provides solutions for all types of I/O interconnection: point-to-point, bussed, and wireless. IS CHARMs deliver a reduced footprint and eliminate the need for separate barriers and the associated intercabinet wiring. A smaller footprint and fewer connections improve the reliability of the installation and deliver significant cost savings.
The DeltaV CHARM I/O Card (CIOC) supports both conventional and IS CHARMs, providing unprecedented flexibility in control system I/O topology. I/O can be added anywhere it is needed using standard Ethernet infrastructure hardware. Each I/O channel has a dedicated CHARM that provides both signal characterization and galvanic isolation for intrinsically safe applications. IS barriers are integrated inside the CHARM to provide single-channel fault isolation, as well as electrical isolation and energy-limiting circuitry that meets IEC Ex ia ratings. IS CHARMs signal types include: IS AI 4-20 mA HART, IS AO 4-20 mA HART, IS DI Namur, and IS DO 24 Vdc.
Emerson Process Management
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