FIELD I/O TERMINATIONS

Field I/O signal connections are made at termination

assemblies (TAs) mounted on DIN rails within or

external to the enclosure. Termination assemblies are

connected to the associated baseplate by dedicated

cables, which can be 0.5 m (1.7 ft) up to 30 m

100 ft) in length. These various cable lengths allow

the termination assemblies to be mounted in the

same enclosure as the FBMs, or in an adjacent

enclosure.

Analog and discrete I/O FBMs are used with specific

termination assemblies to handle a variety of

input/output signals. When used in high voltage

applications, discrete I/O termination assemblies

adapt the module to 120 V ac, 125 V dc, or 240 V ac

inputs.Termination assemblies (TAs) with built-in

relays are available for switching high voltage and

high current digital outputs. Some TAs readback the

state of the contacts to confirm the state of the relay.

INTRINSICALLY SAFE TERMINATION

ASSEMBLY – BASEPLATE (ISTA-*BP*)

The ISTA-*BP* is a combination of a baseplate with

integrated terminals fitted with one or two Fieldbus

modules (FBMs) and eight galvanic isolators. This

solution consists of a printed circuit board and

therefore does not require any additional wiring on

the board, offering a reliable interface between the

control processor and field I/O sensors and

actuators. As a result this compact packaging offers

a noticeable space saving in the interface cabinet.

This is a joint Foxboro® / Pepperl+Fuchs product.

For details, refer to PSS 31H-2Y12.

ENCLOSURES

Enclosures extend the design of the 200 Series

FBMs by providing a range of mounting options to

match application requirements.

Figure 2. Dual or Redundant ISTA-*BP*

The G-Series enclosures are floor-standing units

which accommodate 200 Series baseplates for

mounting FBMs, FEMs, FCMs, and CPs, and/or

termination assemblies or terminal blocks for

marshalling. Most are available for use in ordinary

(IP 43/54) or harsh (IP 55/65) rated environments.

Several product lines of metal enclosures are offered

with the standard 200 Series subsystem:

 G-Series 800×800 Front and Rear Access

Enclosures (G10 system enclosure,

G11 termination enclosure, G12 system and

termination enclosure)

 G-Series 800×600 Front and Rear Access

Enclosures (G20 system enclosure,

G21 termination enclosure, G22 system and

termination enclosure)

 G-Series 800×800 Front-Only Access Enclosures

(G15 system enclosure, G16 termination

enclosure, G17 system and termination

enclosure)