FOXBORO,FBM204
FOXBORO,FBM204
FOXBORO,FBM204
FOXBORO,FBM204
FOXBORO,FBM204
FOXBORO,FBM204
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FBM204

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Foxboro FBM204 combines four isolated analog input channels and four isolated analog output channels for 0–20 mA field loops on the Foxboro DCS module fieldbus.
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Technical specifications for FBM204

  • Manufacturer:
    Invensys
  • Part Number:
    FBM204
  • Product Family:
    Foxboro
  • Product Type:
    0 to 20 mA Analog Input/Output Module
  • Stock:
    1
  • Input Channels:
    4 analog current inputs
  • Output Channels:
    4 analog current outputs
  • Channel Range:
    0 to 20.4 mA DC nominal
  • Channel Isolation:
    Each input and output is galvanically isolated from other channels and ground
  • Input Accuracy:
    ±0.03% of span
  • Input Impedance:
    61.5 Ω nominal
  • Output Accuracy:
    ±0.03% of span
  • Output Load:
    750 Ω maximum
  • Output Resolution:
    13 bits
  • Output Processing Delay:
    30 ms maximum
  • HART Compatibility:
    Electrically compatible; no HART digital communications are provided by FBM204
  • Fieldbus:
    Redundant 2 Mbps module fieldbus
  • Supply:
    24 V DC, +5% / -10%
  • Power Consumption:
    7 W
  • Heat Dissipation:
    3.5 W
  • Isolation Test:
    600 V AC for one minute between a channel and ground or another channel
  • Operating Temperature:
    -20°C to 70°C
  • Relative Humidity:
    5% to 95%, non-condensing
  • Mounting:
    Compact 200 Series baseplate; DIN-rail or rack-mounted baseplate
  • Termination Cable:
    Type 1; up to 30 m
  • Current Module Part Number:
    RH914SY
  • Dimensions:
    4.5 × 10.2 × 10.4 cm
  • Weight:
    0.284 kg
  • Tariff Code:
    8538900000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Loop Integration Termination Commissioning Application
  • Combines four analog inputs and four analog outputs
  • Isolates every channel from the others and from ground
  • Communicates through the redundant module fieldbus

FBM204 provides mixed current-loop I/O for a Foxboro DCS installation.

The module performs field-signal conversion locally while its channel isolation helps separate individual field loops.

Baseplate mounting, remote termination assemblies and configurable fallback behavior support maintenance without disturbing the complete field termination structure.

Availability, condition, price, and shipping time for FBM204 are confirmed during quotation.

Foxboro FBM204 Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Confirm whether each channel is assigned as an input or output
  • Match loop polarity, field power, and configured scaling
  • Verify the field device can drive the documented loop load
  • Select the documented termination assembly for the project
  • Use the specified Type 1 termination cable
  • Inspect and fully seat both cable connectors
  • Test input channels with known current sources
  • Prove output response and configured fallback behavior
  • Confirm diagnostics and redundant fieldbus communication
  • Mixed analog input and output loops in Foxboro DCS systems
  • Isolated current-loop interfaces for process transmitters and actuators
  • Distributed control loops using the supported analog I/O application
Description
FBM204 is a Foxboro DCS analog I/O module with four current inputs and four current outputs.

Each channel is galvanically isolated, and the module converts field-loop signals for communication over the redundant module fieldbus.

Configurable conversion, output fail-safe behavior, termination assemblies and Type 1 cabling allow the module to be integrated into documented Foxboro 200 Series I/O installations.
Alternative Names
FBM204 FBM 204 Foxboro FBM204 Foxboro FBM 204 Invensys Foxboro FBM204 EcoStruxure Foxboro DCS FBM204
Technical notes
FBM204 replacement requires confirming RH914SY identity, baseplate, termination assembly, Type 1 cable, channel direction, loop power, load, scaling, fallback values, and saved control configuration; mismatches can disrupt analog loops.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can Foxboro FBM204 replace an earlier FBM without checking the termination assembly?
No. Confirm the installed baseplate, termination assembly, Type 1 cable, channel assignments, loop-power arrangement and project configuration before replacement.
Does Foxboro FBM204 communicate HART digital data to the control system?
No. Its channels are electrically compatible with standard HART signals, but the module itself does not provide HART digital communications.
What should be saved before replacing Foxboro FBM204?
Preserve the channel mapping, scaling, conversion settings, output fallback values, DPIDA use where applicable, alarm handling and control strategy associated with the module.
Why must Foxboro FBM204 output fail-safe behavior be reviewed during replacement?
Each output may be configured to hold or use fallback data. An incorrect setting can drive the field loop to an unintended value during a communication or module fault.
What should be checked when a Foxboro FBM204 loop behaves incorrectly after replacement?
Verify channel direction, loop polarity, field power, termination wiring, load, scaling, cable seating and the restored application configuration before changing calibration assumptions.
How should the correct Foxboro FBM204 termination hardware be selected?
Match the project documentation and current Schneider Electric termination tables to the required field wiring, loop-power method, connector style and maintenance arrangement.
How should Foxboro FBM204 be recommissioned?
Prove each input against a known signal, verify each output through the approved loop test, confirm fail-safe behavior and diagnostics, then return the associated control logic to service.

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