The F880 redundant fieldbus power supply is designed to provide redundant power

for eight (8) Foundation fieldbusTM H1 segments. Connections are provided on the

F880-Cx Carrier for two redundant pairs of Yokogawa ALF111 fieldbus cards using

Yokogawa AKB336 cables. Power for the eight fieldbus segments is provided by two

F801 or F802 Power Modules mounted to the carrier and operating in a redundant

configuration. Failure alarms, galvanic isolation, power conditioning and segment

termination are incorporated into each Power Module. A single Power Module may

be used where redundancy is not required.

Three variants of carriers are available in the F880 family to be used in two different

types of installations. For large installations where multiple F880 systems will be

installed in a cabinet, there are Left (F880-CL) and Right hand (F880-CR) versions

that make cabinet wiring symmetrical – see Figure 2b. In smaller installations where

carriers are not installed side-by-side, the F880-CA carrier provides terminal numbering

and consistent connector polarity.