Foxboro PBCO-D8-009 Terminal Board (TB)

Foxboro PBCO-D8-009 Terminal Board (TB)

Product basic positioning and core role

PBCO-D8-009 is a Termination Board (TB) launched by G.M. International. Its core function is to directly connect D1000 series intrinsic safety isolation and protection modules, and interface with Foxboro FBM series I/O cards (FBM211, FBM207b, FBM241c, FBM242). It can achieve backplane interface connection without the need for conventional Field Termination Assembly, simplifying the signal transmission link between safe and dangerous areas in industrial control systems, and combining cost-effectiveness and design convenience.

Compatible device and module configuration

（1） Compatible FBM I/O card types and parameters

The terminal board provides dedicated interfaces for FBM cards of different signal types, and the functions and channel configurations of each card are as follows:

FBM I/O card model type channel configuration core purpose

FBM211 Analog Input (AI) board with 16 channels, 4-20mA signal reception for on-site analog signals (such as sensor data)

FBM207b digital input (DI) board 16 channels receive on-site digital input signals (such as switch status, proximity sensor signals)

FBM241c digital input/output (DI/DO) board with 8 channels DI+8 channels DO simultaneously receives digital input signals and outputs control signals (such as driving solenoid valves)

FBM242 digital output (DO) board 16 channel output digital control signals (such as control actuators, indicator lights)

（2） Matching D1000 series modules

The terminal board needs to be equipped with D1000 series intrinsic safety modules to achieve signal isolation and protection. The module types corresponding to different I/O cards are fixed, as follows:

FBM I/O card model matches D1000 module type module function

FBM211 (analog input) D100D, D104D, D1052D, D1072D analog signal isolation, supports 4-20mA signal transmission, some modules (D101D/D104D) are compatible with HART protocol

FBM207b (digital input), FBM241c (DI part) D1030D, D1032D digital input signal isolation, suitable for voltage contactless signals and proximity sensor signals

FBM241c (DO section), FBM242 (digital output) D1049D digital output signal isolation, driving solenoid valves and other loads, supporting load diagnosis

（3） Channel capacity limitation

The terminal board only supports 2-channel modules, and a single TB can achieve any of the following channel configurations:

16 channel analog input (AI)

16 channel digital input (DI)

8-channel digital input+8-channel digital output (DI+DO)

16 channel digital output (DO)

Core Features and Product Highlights

Simplified wiring and compatibility:

The terminal board connector is pin compatible with standard system cables, without the need for dedicated cables or additional external wiring; Connect with Provox I/O cards through standard Provox cables to reduce wiring complexity and cost.

Intrinsic safety and isolation protection:

Relying on D1000 series associated devices to achieve intrinsic safety protection and signal isolation, the connection between hazardous and safe areas is only completed through module terminal blocks, and the terminal board does not require separate intrinsic safety certification, shortening the design cycle.

Redundant power supply and flexible expansion:

The 24Vdc power supply is connected through a dual plug terminal block, supporting redundant power supply and daisy chain connection (even if the terminal block is not plugged into the corresponding matching connector). The power supply is distributed to the isolation module through the terminal board bus to ensure power supply stability.

Convenient installation and maintenance:

Equipped with sturdy carbon steel painted plate bracket, supporting surface installation (4 M6 screw mounting slots);

Equipped with Shield Rail, 5 M5x10 holes for cable shielding layer connection, and 1 M4x10 screw for grounding;

Provide backup fuses (2A delay type), power failure monitoring function, and support label labeling at the top to reduce maintenance difficulty.

Status visualization:

Equipped with LED indicator lights - green indicates normal power supply, red indicates fault detection (such as abnormal power supply voltage), providing intuitive feedback on equipment operation status.

Technical specifications and parameters

（1） Power Supply and Protection

Parameter category specific specifications

Power input nominal 24Vdc, input range 20-30Vdc, with reverse polarity protection

The power selection has a built-in OR diode, which can automatically select a higher voltage power source

Protection fuse 2A delay type (onboard backup fuse)

Fault detection power supply voltage fault threshold: ≤ 18Vdc; The fault signal is output through the contact of the NE SPDT relay without voltage (the relay loses power in case of fault)

Relay parameter contact material: AgCdO; Contact rating: 2A 250Vac (500VA), 2A 250Vdc (80W, resistive load); Mechanical lifespan 3 × 10 ⁶ times, electrical lifespan 1 × 10 ⁵ times

（2） Connection interface

Interface type specification and purpose

Terminal block polarized plug-in disconnect screw terminal block, supporting up to 2.5mm ² wire

FBM I/O card interface SUB D 37 pin male connector (to be used with female connector)

Shielding and grounding shielding rails (5 M5x10 holes), grounding screws (M4x10)

（3） Environmental and Physical Characteristics

Parameter category specific specifications

Working environment temperature: -20~+60 ° C; relative humidity: ≤ 90% (below 35 ° C, no condensation)

Storage environment temperature: -45~+80 ° C

Installation method: Surface installation

Dimensions (width x depth x height) 224mm x 190mm x 122mm

Weight approximately 940g (excluding modules)

Applicable Area: Safe Zone/Non Hazardous Zone

Wiring and Circuit Design

The document provides detailed loop diagrams and connection tables, clarifying the signal flow direction between the HAZARDOUS Area and the SAFE Area. The core wiring logic is as follows:

（1） FBM211 (16AI) and FBM207b (16DI)

FBM211: Equipped with analog modules such as D1014D, hazardous area field equipment (such as 4-20mA transmitters) is connected through the module terminal block, and the signal is isolated and transmitted to the corresponding channel of FBM211. Some modules support HART multiplexer.

FBM207b: Equipped with digital modules such as D1032D, the voltage non-contact signal and proximity sensor signal in the hazardous area are isolated by the module and connected to the digital input channel of FBM207b.

（2） FBM241c (8DI+8DO) and FBM242 (16DO)

FBM241c: DI section (terminal board positions 1-4) is equipped with D1032D module to connect digital input signals; The DO section (terminal board positions 5-8) is equipped with D1049D module, which outputs signals to drive hazardous area solenoid valves and other loads, supporting load diagnosis.

FBM242: The full channel (terminal board positions 1-8) is equipped with D1049D module to output digital control signals to hazardous area loads (such as solenoid valves). The module is responsible for signal isolation and load status monitoring.

All wiring tables clearly indicate the corresponding relationship between "field equipment module terminal block terminal board connector pins FBM card channel redundant connector pins", and the FBM card interface (CON4) is a SUB D 37 pin male connector, with the shielding layer uniformly connected to the shielding terminal block of pin 1.

Order Information

Product Model: PBCO-D8-009

Product Description: 8-bit terminal board, compatible with Foxboro FBM I/O cards (FBM211, FBM207b, FBM241c, FBM242), required to be used with D1000 series intrinsic safety modules.