Foxboro FBM207B 24VDC Contact‑Sense Discrete Input Fieldbus Module

Technical Specifications

Model:FBM207C

Brand:Foxboro

System compatibility:I/A Series DCS FBM200 series fieldbus I/O subsystem,works with FCP/FCM controller,matched with corresponding termination assembly and pre‑terminated cable

Function:16‑channel galvanically isolated contact‑sense discrete input fieldbus module,internal 48VDC ±15% wetting voltage for dry‑contact field switches and relay‑contact feedback signals,supports discrete‑input,pulse‑counting(max 250Hz) and sequence‑of‑events timestamp recording,configurable debounce filter time(0/4/8/16/32ms),supports single‑mode or redundant‑pair installation for high‑availability control loops

Installation:Baseplate‑mount installation,mated with dedicated FBM baseplate and matched termination assembly

Input channel:16‑channel contact‑sense discrete input,internal 48VDC wetting voltage,short‑circuit current typical 3.2mA,channel‑to‑channel galvanic isolation,3000V RMS isolation rating

Circuit feature:Per‑channel over‑voltage protection,contact‑input processing circuit,configurable hardware debounce filter

Feature:Support hot‑swap online replacement without subsystem power‑off,redundant 2Mbps fieldbus communication with FCP/FCM controller,supports redundant pairing on adjacent baseplate slots

Diagnostic:Front‑panel multi‑color LED indicators for power and fieldbus communication status

Power supply:24VDC via FBM baseplate backplane,max 3W power consumption

Protection:Transient surge absorption for each signal terminal

Environmental standard:Compliant with ISA‑S71.04 Class G3 industrial atmospheric condition

Housing:Aluminum alloy metal housing,slot‑in mechanical locking structure

Protection class:IP20

Horizontal operating temperature:‑20℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +85℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:1.00kg

Dimensions:36mm ×128mm ×144mm

Certification:CE,UL

Built‑in function

FBM207C 48VDC contact‑sense discrete input module acquires dry‑contact on‑off status signals from field limit‑switches,relay contacts and push‑buttons for Foxboro I/A‑Series DCS system. It provides internal 48VDC wetting voltage for field dry‑contact devices without external instrument power supply. Channel‑by‑channel galvanic isolation effectively suppresses ground‑loop interference inside instrument cabinet. Configurable debounce filter eliminates mechanical‑contact bounce interference. It supports pulse counting and sequence‑of‑events timestamp recording for plant‑interlock‑event tracing. Hot‑swap supports online module replacement without system shutdown,widely applied for valve‑position feedback,motor‑status‑monitoring‑loop maintenance in petrochemical,chemical and power‑plant facilities.

Product Brief

FBM207C belongs to Foxboro I/A Series legacy DCS 48VDC‑contact‑sense‑discrete‑input spare‑part family,obsolete original baseplate‑mount 16‑channel 48VDC contact‑sense input module component. Must match with corresponding FBM baseplate and matched termination assembly. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.