Foxboro DM400YR FBM15 I/O Expander Fieldbus Module

Technical Specifications

Model:DM400YR

Brand:Foxboro

System compatibility:I/A Series DCS system,FBM fieldbus I/O subsystem signal expansion module

Function:120VAC mixed‑signal I/O expander,collects AC status signals and provides relay contact output for field actuators,expands discrete signal processing capacity of FBM station

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

Signal type:Mixed 120VAC discrete input and relay dry‑contact output

Input circuit:Opto‑electrical galvanic isolation for AC input channels

Output circuit:Form A relay contact output compatible with 120VAC field load,RC surge‑suppression per channel

Feature:Support hot‑swap online replacement without subsystem power‑off

Diagnostic:Per‑channel green LED for input and output status;multi‑color front‑panel LED for module power and fieldbus communication fault

Power supply:Powered via FBM baseplate backplane

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

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

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:0.97kg

Dimensions:36mm × 128mm × 144mm

Certification:CE,UL

MTBF:>85000 hours

Built‑in function

DM400YR FBM15 I/O expander module is used for signal capacity expansion of Foxboro I/A‑Series FBM I/O subsystem. It acquires 120VAC field equipment status signals through opto‑isolated input channels and outputs dry‑contact relay signals to drive solenoid valves and contactors. RC absorption circuit restrains inductive‑load back‑EMF to protect relay contacts. Hot‑swap function supports online module replacement and reduces plant downtime risk. Per‑channel LED facilitates quick on‑site signal inspection,widely applied for discrete‑signal capacity‑expansion cabinets in petrochemical,chemical and power‑plant DCS projects.

Product Brief

DM400YR belongs to Foxboro I/A Series legacy DCS FBM I/O spare‑part family,obsolete original fieldbus mixed‑I/O expander component. Must be matched with corresponding FBM baseplate assembly. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.