Foxboro CM400YJ FBM Analog Input Fieldbus Module

Technical Specifications

Model:CM400YJ

Brand:Foxboro

System compatibility:I/A Series DCS system

Function:Fieldbus multi‑channel analog signal acquisition,convert field analog process signals to digital data for DCS controller

Installation:Baseplate‑mount installation,mated with dedicated I/A‑Series FBM baseplate

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

Input signal:4‑20mA current loop,0‑10V voltage process signal

Isolation strength:Per‑channel galvanic isolation between field‑side and internal circuit

Accuracy:±0.13% full scale

Resolution:12‑bit analog‑to‑digital conversion

Protection:Built‑in over‑current,over‑voltage and channel surge protection

Diagnostic:On‑board multi‑color LED indicators for module power,fieldbus communication and individual channel fault alarm

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

Housing:Aluminum ribbed metal housing,anti‑vibration mechanical reinforcement

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:0.48kg

Dimensions:36mm × 128mm × 144mm

Certification:CE,UL

MTBF:>89000 hours

Built‑in function

CM400YJ FBM analog input module receives analog signals from field transmitters,realizes per‑channel galvanic isolation to suppress ground‑loop interference. It transmits converted digital values to I/A‑Series controller via fieldbus baseplate backplane. Hot‑swap function enables online module replacement and reduces plant downtime risk. Independent channel fault diagnosis helps technicians rapidly locate abnormal input channels,widely applied for pressure,flow,temperature and liquid‑level measurement loops in petrochemical,chemical and continuous‑running power‑plant facilities.

Product Brief

CM400YJ belongs to Foxboro I/A Series legacy DCS spare‑part family,obsolete original automation component. It must be matched with corresponding I/A‑Series FBM baseplate and complete correct field transmitter wiring. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation