Foxboro Evo FBM217 Discrete Input Module

Foxboro Evo FBM217 Discrete Input Module

Core functions and features of the module

FBM217 is a 32 channel discrete input module designed specifically for industrial environments, supporting multi voltage level signal acquisition and high reliability operation. Its core functions and features are as follows:

（1） Core functions

Multi voltage signal support: covering low, medium, and high voltage inputs, including:

Low voltage: 15~60V DC (voltage monitoring or contact detection);

Medium voltage: 120V AC/125V DC (logic 0:0~20V AC/DC, logic 1:80~132V AC/75~150V DC);

High voltage: 240V AC (logic 0:0~40V AC, logic 1:164~264V AC).

Redundancy deployment capability: Supports single module or redundant paired deployment (2 FBM217s need to be installed in adjacent odd/even positions on the base, with the redundant adapter RH926ZY). In redundancy mode, the input signal quality is verified through the CINR function block of Foxboro Evo control software, and the optimal signal is automatically selected.

Event Sequence (SOE) Function: In conjunction with I/A Series v8. x and above software or Control Core Services v9.0+, supports event collection, storage, and reporting, with optional GPS time synchronization (accuracy up to 1ms); The old version software (before v8. x) needs to be implemented through the ECB6/EVENT block, with an accuracy of 1 second and no cross processor synchronization.

Signal conditioning and protection: relying on termination components (TAs) to achieve optical isolation, current limitation, and voltage attenuation. Some TAs support external excitation power supply access without the need for additional on-site circuit protection equipment (such as fuses).

（2） Key characteristics

Environmental adaptability: Complies with ISA S71.04 G3 level harsh environmental standards, can withstand vibration (0.75 m/S ² @ 5-500Hz), wide temperature range (working -20~70 ℃, storage -40~70 ℃);

Hot swappable design: When replacing modules, there is no need to remove on-site wiring, power or communication cables. The replacement of redundant modules does not affect the on-site signal acquisition of normal modules;

Status indication: The front LED light provides real-time feedback on the operating status of the module (such as fault, ready) and the discrete status of a single input channel, facilitating quick diagnosis;

Communication reliability: Connected to the Fieldbus Communication Module (FCM) or Control Processor (FCP) via a 2 Mbps module fieldbus, supporting A/B dual path communication and automatic switching in case of single path failure.

Hardware parameters and technical specifications

（1） Input and electrical parameters

Parameter category specific specifications

Channel configuration with 32 isolated channels (isolation level dependent on TA, some TAs support channel level isolation)

Typical 2.2mA at 30V DC input current; maximum 2.8mA at high voltage (240V AC) (logic 1 state)

Source resistance limit logic 1 (15V DC) ≤ 1k Ω; logic 0 (30V DC) ≥ 100k Ω

The filtering/debounce time can be configured (no filtering, 4ms, 8ms, 16ms, 32ms, firmware v1.25H+required)

Maximum pulse counting rate 250Hz

The combination of isolation voltage module and TA can withstand 600V AC (1 minute, group isolation channel to ground)

（2） Power supply and power consumption

Power input: 24V DC (redundant mode, allowable range+5%/-10%, i.e. 21.6-26.4V DC);

Power consumption: maximum 3W at 24V DC (operation), maximum heat dissipation 5W;

Power protection: Supports redundant independent DC power supply access to enhance power supply reliability.

（3） Physical and environmental parameters

Parameter category specification requirements

Dimensions (module) Height 102mm (including installation ears 114mm) x Width 45mm x Depth 104mm

The weight module weighs approximately 284g (10oz); TA approximately 420-454g (0.93-1.0lb)

Working environment temperature -20~70 ℃, humidity 5%~95% (non condensing), altitude -300~3000m

Storage environment temperature -40~70 ℃, humidity 5%~95% (no condensation), altitude -300~12000m

The pollution level complies with EIA 364-65 Class III and is suitable for harsh environments of ISA S71.04 G3 level

Installation and Termination Component (TA) Configuration

FBM217 needs to be used in conjunction with a dedicated base and termination assembly (TA), and installation and wiring must follow strict specifications. The core requirements are as follows:

（1） Base and installation

Base type: Modular base (DIN rail or 19 inch rack mounted), with a maximum capacity of 4 or 8 FBM modules per base;

Redundant modules need to be installed in adjacent odd/even positions (such as 1&2, 3&4) and connected through redundant adapter RH926ZY;

Support 100 series conversion installation structure (refer to PSS 31H-2W8) for easy upgrading of old systems.

Installation specifications:

DIN rail: Supports 32mm/35mm specifications, with priority given to galvanized yellow chromium steel material (ensuring good grounding), fixed at a spacing of approximately 200mm;

Panel installation: Use M4 or # 8 screws and reserve heat dissipation space (≥ 25mm on each side of the module).

（2） Termination Component (TA) Selection