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FBM201

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Foxboro FBM201 is an eight-channel isolated 0–20 mA analog input module used to acquire current-loop signals in Foxboro DCS systems.
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Technical specifications for FBM201

  • Manufacturer:
    Invensys
  • Part Number:
    FBM201
  • Product Family:
    Foxboro
  • Product Type:
    Eight-Channel Isolated Analog Input Module
  • Stock:
    1
  • Analog input channels:
    8, individually isolated
  • Input range:
    0 to 20 mA dc
  • Input accuracy:
    ±0.03% of span
  • Input impedance:
    61.5 Ω
  • Input power:
    24 VDC +5/-10%
  • Maximum power consumption:
    7 W
  • Termination cable:
    Type 1, up to 30 m
  • Dimensions:
    4.5 × 10.2 × 10.4 cm
  • Operating temperature:
    -20 to 70°C at -300 to 914 m; derated above 914 m
  • Relative humidity:
    5 to 95%, non-condensing
  • Input channel isolation test:
    600 VAC for 1 minute between any channel and ground or any other channel
  • Storage temperature:
    -40 to +70°C
  • Vibration:
    0.75 g from 5 to 500 Hz
  • 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 Signal Integration Isolation and Power Replacement Checks Application
  • Accepts eight isolated current-loop inputs
  • Separates field channels from ground and module logic
  • Confirm order code, TA and loop-power arrangement before replacement

FBM201 is selected for conventional current-loop measurements that need channel-to-channel galvanic isolation.

Selection must distinguish the generic function from the installed legacy or current order code and from its separate termination assembly.

Before installation, preserve channel scaling, loop supplies, TA wiring and the baseplate position recorded in the control database.

Availability, condition, price, and shipping time for FBM201 are confirmed during quotation.

Foxboro FBM201 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.

  • Verify every loop is within the 0–20 mA input range
  • Keep each channel return and shield on the documented terminals
  • Do not treat HART electrical compatibility as digital communication
  • Preserve the selected internal or external loop-power arrangement
  • Investigate ground paths on only the affected isolated channel
  • Confirm the 24 VDC module supply before loop troubleshooting
  • Match the complete installed order code and baseplate
  • Keep the original TA cable and connector mapping
  • Validate every channel with a known current reference
  • Isolated process-transmitter current inputs
  • Conventional analog measurements in Foxboro DCS cabinets
  • Replacement of installed FBM201 electronic modules
Description
Foxboro FBM201 converts eight 0–20 mA field currents into digital values for the redundant 2 Mbit/s Module Fieldbus.

Each channel uses its own isolated input path, helping prevent a fault or ground reference on one loop from coupling into adjacent measurements.

The module is intended for standard analog transmitters; although its input circuitry is HART-compatible, it does not exchange HART digital messages.
Alternative Names
FBM201 FBM 201 Foxboro FBM201 Invensys Foxboro FBM201 I/A Series FBM201 Foxboro FBM201 RH914SQ Invensys Foxboro FBM201
Technical notes
Foxboro FBM201 is an 8-channel isolated 0–20 mA input module; RH914SQ supersedes P0914SQ. Confirm the separate TA, Type 1 cable and channel wiring before replacement.
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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.
How should a buyer choose between the legacy and current Foxboro FBM201 order codes?
Match the installed label, baseplate generation, processor software and TA; do not replace P0914SQ with RH914SQ solely because both perform the FBM201 function.
Can Foxboro FBM201 communicate with HART field devices?
It can read the 4–20 mA component from a HART loop, but it does not provide HART digital communications; select a HART host module when device messaging is required.
Which termination hardware must be confirmed for Foxboro FBM201?
Identify the installed TA, its Type 1 cable and whether loops are internally or externally powered; the module body alone does not define the field terminals.
Why can one Foxboro FBM201 channel drift while the other channels remain stable?
Check the affected transmitter supply, return, shield, terminal resistance, leakage and scaling because the channels are individually isolated.
Can Foxboro FBM201 be replaced without removing field wiring?
The removable TA cable normally lets the field termination remain in place, but the database slot, connector condition and approved maintenance procedure must be verified first.
What should be saved before replacing Foxboro FBM201?
Record the exact order code, baseplate slot, TA number, channel ranges, scaling, alarms, loop-power source, wiring map and active diagnostics.
How should Foxboro FBM201 be commissioned after replacement?
Apply known loop currents to all eight channels, verify engineering-unit scaling and isolation, compare diagnostics and then return each loop to service under controlled conditions.

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