Foxboro AD908MF FBM Digital Input Breakout Terminal Assembly

Technical Specifications

Model:AD908MF

Brand:Foxboro

System compatibility:I/A Series DCS system,matched with multiple FBM digital I/O modules

Function:Signal transition terminal assembly,convert FBM high‑density D‑SUB interface to field‑side screw terminal‑block for discrete signal wiring

Mounting:Standard DIN‑rail mounting inside instrument cabinet

Connector:Module‑side high‑density D‑SUB receptacle for interconnect cable;field‑side removable green screw terminal‑block

Supported signal:Discrete digital input and output dry‑contact signals

Feature:Removable terminal‑block body,simplifies field wiring and module replacement without re‑terminating field wires

Terminal rating:24VDC signal circuit,max 1A per channel

Housing:Flame‑retardant industrial plastic housing

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

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:0.38kg

Dimensions:110mm ×72mm ×35mm

Certification:CE,UL

Built‑in function

AD908MF breakout terminal assembly serves as signal transition hardware between Foxboro FBM modules and field‑installed discrete devices. It converts compact high‑density D‑SUB interface into easy‑to‑operate screw terminal‑block for on‑site wiring. Removable terminal‑block design avoids re‑crimping field wires during FBM module swapping,reduces maintenance workload. Matched with dedicated FBM interconnection cable to transmit stable discrete signals for valve feedback,interlock and alarm signal acquisition in petrochemical,chemical and power‑plant DCS cabinets.

Product Brief

AD908MF belongs to Foxboro I/A Series legacy DCS wiring‑accessory spare‑part family,obsolete original terminal‑transition assembly. Must pair with corresponding FBM I/O module and matched interconnection cable. Widely used for original Foxboro DCS‑equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation