Intrinsic Safety Barriers and Purged Enclosures Can Reduce I/O Wiring

Pepperl+Fuchs Compliance and Technology Consultant Ryan Brownlee answered a Control Design magazine reader’s question on how to reduce wiring for their hazardous to non-hazardous application.

Read his response at Control Design to learn about how intrinsic safety barriers, fieldbus, WirelessHART, and pressurized enclosures can be the right solution for I/O wire reduction.

Intrinsic Safety Barriers

Pepperl+Fuchs Intrinsic safety barriers limit the energy supplied to a circuit to prevent explosions in hazardous areas. Barriers are available that support connectivity of two-contact switch type or NAMUR type sensors over a single pair of wires, cutting the needed wire run back to the non-hazardous area in half.

FieldConnex® Fieldbus

FieldConnex® fieldbus connectivity allows reliable data communication between the plant and control system while powering field devices in non-hazardous and hazardous areas. It can be used to dramatically reduce the number of wires that need to be run a long distance.  

WirelessHART

WirelessHART technology from Pepperl+Fuchs can establish a wide network structure where each connected device becomes a signal source and a repeater. Several modules are available to create a cost-optimized wireless industrial communication network. WirelessHART is especially useful for widespread installations with difficult-to-access field devices.

Pepperl+Fuchs Bebco EPS® Purge and Pressurization

Purge and pressurization control systems are available that can monitor separate enclosures at the same time. This makes it possible to break up one large control cabinet into several smaller cabinets in a hazardous area, allowing users to reduce wiring without needing multiple purge systems.