FBM237 FOXBOROOVERVIEW
The FBM237, 0 to 20 mA Output Module contains
eight channels.The outputs are galvanically isolated
from other channels and ground. The module can be
used as a single unit, or as a redundant pair (two
FBM237s).
When used as a redundant pair, field output signals
are wired to one common termination assembly (see
Figure 1). Each module in the pair independently
holds the output(s) at its specified output value(s).
FEATURES
The key features of the FBM237 are:
Eight 20 mA DC analog output channels
Each output channel is galvanically isolated
Single or redundant modules
Rugged design suitable for enclosure in Class G3
(harsh) environments
Termination Assemblies (TAs) for locally or
remotely connecting field wiring to the FBM237TA for use with Output Bypass Station to
maintain outputs during maintenance operations
3-tier termination assembly for per channel
internally and/or externally loop powered
transmitters.
The FBM237 is electrically compatible with
standard HART signals
PHYSICAL DESIGN
FBM237 has a modular design, with a rugged
extruded aluminum exterior for physical protection of
the circuits. Enclosures specially designed for
mounting the FBMs provide various levels of
environmental protection, up to harsh environments
(Class G3), per ISA Standard S71.04.
TERMINATION ASSEMBLIES (TA)
Field I/O signals connect to the FBM subsystem via
DIN rail mounted termination assemblies. The TAs
used with the FBM237 are described in
“TERMINATION ASSEMBLIES AND CABLES” on
page 7.
