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FBM201C

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Foxboro FBM201C is an eight-channel isolated voltage analog input module for Foxboro DCS field measurements.
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Technical specifications for FBM201C

  • Manufacturer:
    Invensys
  • Part Number:
    FBM201C
  • Product Family:
    Foxboro
  • Product Type:
    Eight-Channel Isolated Voltage Analog Input Module
  • Stock:
    1
  • Analog input channels:
    8, individually isolated
  • Input range:
    0 to 5 V DC
  • Input impedance:
    10 MΩ
  • Accuracy:
    ±0.03% of span
  • Temperature coefficient:
    ±50 ppm/°C
  • Common-mode rejection:
    >100 dB at 50/60 Hz
  • Normal-mode rejection:
    >95 dB at 50/60 Hz
  • Isolation test:
    600 VAC for one minute; input safety limits still apply
  • Power consumption:
    7 W maximum
  • Heat dissipation:
    3 W maximum
  • Termination cable:
    Type 1, up to 30 m
  • Module Fieldbus:
    Redundant 2 Mbps
  • Input power:
    24 VDC +5%, -10%
  • Operating temperature:
    -20 to +70°C
  • Storage temperature:
    -40 to +70°C
  • Relative humidity:
    5 to 95%, noncondensing
  • Contamination class:
    ISA-S71.04 Class G3
  • 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 Signal Matching Termination Commissioning Application
  • Use FBM201C only for its documented FBM201C function and matched field signal type
  • Confirm the exact module order identity, termination assembly and cable before replacement
  • Preserve channel configuration, field wiring and diagnostics before removing FBM201C

Foxboro FBM201C is an eight-channel isolated voltage analog input module for Foxboro DCS field measurements.

FBM201C is the functional FBM201C designation; RH922YJ is the current electronic-module part number; RH922ZN is separate termination hardware.

Before replacement, verify the exact label, signal range, termination assembly, cable, channel configuration, field wiring and system compatibility.

Availability, condition, price, and shipping time for FBM201C are confirmed during quotation.

Foxboro FBM201C 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.

  • Match the 0 to 5 V DC source range before wiring
  • Keep each isolated channel within its permitted common-mode conditions
  • Use traceable references for zero and span checks
  • Use the documented RH922ZN termination assembly
  • Match compression or ring-lug terminals to the installed wiring
  • Keep the Type 1 cable identity and length with the maintenance record
  • Restore channel scaling, alarms and engineering units
  • Check isolation and shield practice before reconnecting field devices
  • Compare module diagnostics with the saved pre-removal state
  • Isolated acquisition of voltage field signals
  • Retrofit of a like-for-like Foxboro DCS input module with preserved scaling
  • Channel-isolated measurements where separate field references must be retained
Description
Foxboro FBM201C is an eight-channel isolated voltage analog input module for Foxboro DCS field measurements.

It converts the documented field signals into isolated digital values for the I/A Series or EcoStruxure Foxboro DCS control database while reporting channel and module diagnostics.

Before installation, verify the exact order-number relationship, signal range, termination assembly, cable type, field power, grounding, saved configuration and baseplate compatibility.
Alternative Names
FBM201C FBM 201C Foxboro FBM201C Invensys FBM201C Invensys Foxboro FBM201C I/A Series FBM201C
Technical notes
FBM201C identifies the FBM201C 0 to 5 V DC input version; its current module part number is RH922YJ. It must not be treated as FBM201B or FBM201D even though the enclosure is identical. Confirm the exact range, TA and Type 1 cable 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.
Can Foxboro FBM201C accept a 1 to 5 V transmitter signal?
Yes, when the channel is engineered within the documented 0 to 5 V range and the project scaling correctly treats 1 V as the live-zero value.
Why might Foxboro FBM201C read zero even though a field transmitter is powered?
Check transmitter output, polarity, return path, RH922ZN terminal assignment, Type 1 cable continuity, channel configuration and whether the project is reading the correct hardware point.
Can Foxboro FBM201C directly replace Foxboro FBM201D?
No. FBM201C is the 0 to 5 V version, while FBM201D is 0 to 10 V; the input scaling, electronics identity and termination assembly must match.
What termination hardware belongs with Foxboro FBM201C?
Use the documented RH922ZN termination assembly and the correct Type 1 cable; verify terminal style and installed wiring before ordering.
How should ground-loop risk be checked for Foxboro FBM201C?
Review the source grounding, shield bonding, channel reference and cabinet earth design, then measure unwanted common-mode voltage before reconnecting the loop.
What must be archived before removing Foxboro FBM201C?
Archive the exact RH922YJ label, slot, channel scaling, live-zero treatment, alarms, terminal map, TA/cable numbers, shield practice and active diagnostics.
What proves Foxboro FBM201C is ready for service?
Verify each used channel with traceable 0 to 5 V references, confirm the intended live-zero behavior, compare database values and test alarms without disturbing the process.