Foxboro FBM202 Thermocouple/mV Input Module

FBM Baseplate End

37-pin D-subminiature

Termination Assembly End

25-pin D-subminiature

Construction - Termination Assembly

MATERIAL

DIN Rail Mounted TAs

Polyamide (PA), compression and ring lug

Baseplate-Mounted TAs

Polycarbonate/Acrylonitrile Butadiene

Styrene (PC/ABS), compression

TERMINATION ASSEMBLIES AND CABLES

Field I/O signals connect to the FBM subsystem via

DIN rail mounted or baseplate mounted termination

assemblies (TAs).  Both these types of TAs are

electrically passive.  The TAs for the FBM202 are

available in the following forms:

 Compression screw type (DIN rail mounted) using

Polyamide (PA) material

 Compression screw type (baseplate mounted)

using Polycarbonate/Acrylonitrile Butadiene

Styrene (PC/ABS)

Ring lug type (DIN rail mounted) using Polyamide

(PA) material

Each DIN rail mounted TA and its associated

termination cable provides a feedthrough connection

between eight 2-wire thermocouple/mV analog input

signals and an FBM202 Thermocouple/mV Input

Module.  Each baseplate mounted TA provides a

Field Termination Connections

DIN RAIL TA COMPRESSION-TYPE ACCEPTED

WIRING SIZES

Solid/Stranded/AWG

0.2 to 4 mm2/0.2 to 2.5 mm2/24 to 12 AWG

Stranded with Ferrules

0.2 to 2.5 mm2 with or without plastic collar

BASEPLATE MOUNTED TA COMPRESSION -

ACCEPTED WIRING SIZES

Solid/Stranded/AWG

0.2 to 1.5 mm2/0.2 to 1.5 mm2/24 to 16

AWG

Stranded with Ferrules

0.25 to 0.75 mm2 with plastic collar

0.25 to 1.5mm2 without plastic collar

RING-LUG - ACCEPTED WIRING SIZES

#6 size connectors (0.375 in (9.5 mm))

0.5 to 4 mm2/22 AWG to 12 AWG

feedthrough connection between sixteen 2-wire

thermocouple/mV analog input signals and two

FBM202 Thermocouple/mV Input Modules.

Reference junction temperature compensation is

provided by an isolated resistance temperature

detector (RTD) that is integral to the termination

assembly.  The baseplate mounted TA contains an

RTD for each FBM202.

See “FUNCTIONAL SPECIFICATIONS –

TERMINATION ASSEMBLIES” on page 8 for a list of

TAs used with the FBM202 module.

A removable termination cable connects the DIN rail

mounted TA to the FBM via a field connector on the

baseplate in which the FBM is installed.  Termination

cables are available in the following materials:

 Polyurethane

 Low Smoke Zero Halogen (LSZH).

Termination cables are available in a variety of

lengths, up to 30 meters (98 feet), allowing the

termination assembly to be mounted in either the

enclosure or in an adjacent enclosure.  See Table 2

for a list of termination cables used with the TAs for

the FBM202 module.

Upgrade Subsystem

When an FBM202 is used to replace the 100 Series

FBM02. it may use any of the appropriate termination

assemblies listed above for the FBM02’s field I/O

wiring. Alternatively, the FBM202 can accept this field

wiring through a Termination Assembly Adapter (TAA)

instead of a termination assembly. This is discussed

in Termination Assembly Adapter Modules for

100 Series Upgrade (PSS 31H-2W4)