Model Code Definition(P0973LN)

P0973LN: Foxboro factory original part number for FBM237 HART AI module

P0973: Core hardware base code for 8-channel HART analog input mainboard

LN: Standard industrial version, non-special customized hardware, onboard full HART master circuit, no channel reduction or function cutdown

Corresponding general model: FBM237, P0973LN is its exclusive factory spare part coding

Core Technical Parameters

Electrical & Channel Parameters

Power Supply: Module powered by baseplate 24VDC bus, typical power consumption 4.2W

Input Channel: 8 isolated analog input channels per module, each channel supports 4~20mA DC passive two-wire HART transmitter load drive

Input Sampling Range: Standard 4~20mA DC, configurable 0~20mA auxiliary range; field loop supply 22.5VDC per channel max

Measurement Precision: ±0.05%FS full scale precision, conversion resolution 16-bit DAC/ADC per channel

HART Specification: Onboard independent HART master for every single channel, comply with HART 5/7 standard protocol, polling rate adjustable 0.5~5Hz per instrument

Fieldbus Communication Parameter

Fieldbus Protocol: HDLC dedicated FBM bus, communication rate 2Mbps, compatible with FCP270/FCP280/FCP240 series field controllers

Max Loading: Single FCP270 directly carries up to 32pcs mixed FBM modules including P0973LN; FCP280 supports max128pcs FBM layout

Data Refresh Cycle: Channel scan period configurable 20ms~1s, default 100ms system cycle

Isolation & Mechanical Spec

Channel Isolation: Each input channel galvanic isolated 500VAC against chassis & inter-channel, surge protection for field wiring

Dimension(W×H×D):35mm×142mm×152mm, standard Foxboro vertical plug-in card structure

Net Weight:0.32kg, pluggable on standard FBM baseplate, supports hot-swap replacement under running system

Environmental & Certification Spec

Operating Temperature:0℃~+60℃; Storage:-25℃~+70℃

Ambient Humidity:5%~95%RH non-condensing, G3 industrial corrosive gas environment adaptability

Anti-vibration:0.5g(5~500Hz); Certification:CE,UL,cURus,SIL2 functional safety compliant

External Interface Definition

Field Terminal: Screw terminal baseplate wiring, shielded cable access for field HART instruments

Service Port: Reserved onboard debug RS232 port for local HART parameter calibration

Core Product Features

Full independent channel HART master design: Every 8 input channels equip separated HART circuit, no channel mutual interference, simultaneously read process value and instrument tag, range, alarm, calibration parameter from HART smart device

High-precision isolated sampling: 16-bit high-resolution AD conversion + channel-level isolation, effectively restrain field power supply surge and EMI interference, stable measurement for long-distance field wiring

Seamless DCS software docking: Cooperates with Foxboro Composer/Control Builder, realizes remote instrument configuration, online diagnosis and fault alarm without on-site HART handheld calibrator

Hot-swap maintainable: Online plug/unplug without system shutdown, single channel fault only cut off respective loop without affecting other 7 channels normal collection

Wide industry compatibility: Matches all mainstream HART protocol differential pressure transmitters, temperature transmitters, flow transmitters and smart positioners from Foxboro, Rosemount, Yokogawa

Typical Application Scenarios

Petrochemical plant: Refining device pressure/temperature/flow HART transmitter signal collection, reactor parameter monitoring

Thermal power industry: Boiler feedwater, flue gas system smart instrument data acquisition, deaerator level & pressure closed-loop signal input

Fine chemical & pharmaceutical: Fermentation tank temperature/pH smart transmitter signal sampling, batching process instrument remote management

Metallurgy & cement: Rotary kiln pressure, exhaust gas detection HART instrument centralized signal access

Water treatment: Sewage dosing pump flow, tank level smart transmitter DCS signal input

Matching Accessories & Maintenance Instruction

Compatible Matching Parts

Matched Controller:FCP270,FCP280,FCP240 I/A field control processor

Baseplate Accessory: Dedicated FBM200 series 8-channel terminal base, shielded field wiring terminal block

Auxiliary Tool: Foxboro Composer configuration software, HART handheld communicator for field spot calibration

Cable: Shielded two-core instrument cable for 4~20mA+HART field wiring

Daily Operation & Maintenance

Keep cabinet inner temperature below 55℃, avoid high temperature leading to AD drift and HART communication drop

Regular backup all HART instrument configuration parameters via DCS Composer software quarterly

Replace damaged field shielded cable timely once intermittent measurement fluctuation occurs

Complete module hardware version matching check before spare P0973LN replacement to avoid bus communication failure