Pepperl+Fuchs 6000 Series Purge/Pressurization System

Purpose

The purpose of the Pepperl+Fuchs 6000 series Type X & Ex px, Zone 1

enclosure protection system is to allow the use of general purpose or

non-rated electrical or electronic devices located in general purpose

enclosures instead of explosionproof/flameproof, Type 7 or 9 / Ex d

enclosures or other means of protection for the rated area.

Other purposes include heat, moisture, and dust contamination

prevention.

Description

The 6000 series Type X & Ex px purge and pressurization system protects

general purpose equipment mounted in a standard enclosure.

This allows the enclosure to be located and the equipment operated in a

hazardous area.

The hazardous area classification can be Class I, Class II, Division 1 / Zone

1. Zone 21. The 6000 series operates by controlling and monitoring

compressed instrument air or inert gas through the protected enclosure(s)

so as to remove and prevent the accumulation of flammable gas, vapors,

or dust.

The 6000 series system features these main parts:

• Electronic processor (EPCU) housed in an explosionproof enclosure

• I.S. electrical/pneumatic manifold assembly

• I.S. user interface for programming and monitoring the system

• 316L stainless steel (UNS S31603) type 4X IP66 enclosure for EPCU and

connections

• Pressure relief vent with flow and pressure monitoring at the exhaust.

The user interface allows programming of up to 4 switch inputs,

temperature modules, enclosure power contacts, 2 auxiliary outputs, and

various operational functions.

Through the user interface menus, configuration of the standard information

for setup and operation of a system (purge time, flow rates, pressures,

enclosure size, etc.) are easily programmed. Additional features allow

inputs for system bypass, enclosure power on/off, temperature overload

and activation of rapid exchange flow for cooling or auxiliary relay for

separate cooling source, delay power shutdown, and more. 

The two auxiliary contact outputs can be configured to activate on most

of the input switches or any of the configured alarm states for pressure,

flows, and temperature.

The power for the solenoid valve on the manifold unit, inputs, the user

interface controller (UIC), and EPV-6000 vent are provided by the EPCU

through the internal galvanically isolated intrinsic safety barrier.

No additional I.S. barrier is required.

The adjustable mounting bracket and the universally mountable vent

make the 6000 system easy to install horizontally or vertically onto the

enclosure. A component kit is available for custom installations that fit

specific customer needs.

The 6000 control unit can monitor multiple enclosures and control and

accept inputs from two (2) EPV-6000 vents.

The 6000 series provides a complete system for purging and pressurizing

enclosures for hazardous location operation.