Foxboro RH928AW Redundant power supply module

Cable Entry

Bottom cable entry for power, communication, and field cables is through customer

supplied cable glands that maintain the enclosure protection classification, or optional

factory fitted Multi Cable Transit (MCT).

Modular Baseplate Mounting

The enclosure contains two 8-position standard 200 Series modular baseplates for

Foxboro DCS Fieldbus Modules (FBMs), and two 2-position baseplates for the

FCM2F10s. These are mounted on two vertical DIN rails as shown in Figure 1. page

7. The FBMbaseplates include signal connectors for the FBMs, redundant

independent DC power connections, system cable connections, module fieldbus

connections, and time synchronization connections.

For more information on the modular baseplates, see Standard 200 Series

Baseplates (PSS 41H-2SBASPLT).

Field Termination Assemblies

Termination Assemblies (TAs) are installed on the DIN rails mounted at the sides of

the FBM baseplates. The Universal I/O modules are connected to the TAs with pre

installed system cables.

The TAs are supplied with redundant 24 V DC, protected by fuses that are monitored

by the Fuse Monitoring Unit (FMU).

The enclosure is shipped with TAs fitted with passive feed-through signal conditioners

which you can replace with the signal conditioners listed in the section Termination

Assemblies and Signal Conditioners, page 8.

Protection against harsh environments and hazardous locations:

◦ NEMA

4X/IP66 rated

◦ ClassG3(harsh) environment

◦ ATEX

• Universal I/O and TAs support any one of these options:

◦ 64SimplexI/O

◦ 64RedundantI/O

◦ 48Simplexand16Redundant I/O

• Upto16Universal Standard I/O modules (8 x FBM247. 16 x FBM248. or

4 xFBM248and6xFBM247)thatsupport 64 simplex, redundant, or simplex and

redundant I/O Channels using TAs and signal conditioners

• RedundantField Communication Modules (FCM2F10) for single mode fiber

communication to FCP280

• UptotwoField Device System Integrator Standard modules

(1 x or 2 x FBM232. 2xFBM233)for Modbus TCPCommunication

• Daisychain from one enclosure to the next to reduce home run cables for

communication and power. Alternatively, the power output used to daisy chain an

enclosure can be used to provide power to a wireless field device access point

installed outside of the enclosure

• UptotwoFieldbus Isolator/Repeator modules for daisy chaining enclosures

using Copper (FBI200) or Fiber Optic cable (FCM2F10)

• 12-port fiber optic patch panel with STconnectors for terminating and distributing

fiber-optic cables for communication to the enclosure and wireless field device

access point

• Documentpocket inside front door

• Doorstoppers to help prevent the door from swinging or opening too widely

• 120VAC,230VACsystemsupply

• Supports the Intelligent Commissioning Wizard, which significantly reduces

commissioning effort and shortens the time to plant start-up (see Field Device

Expert for HART Devices Control and I/O (PSS 41S-10FDMHRT)