Foxboro 3C8‑C3D ST‑A Signal Converter Circuit Card

Technical Specifications

Model:3C8‑C3D

Brand:Foxboro

System compatibility:Spec‑200 analog DCS system

Function:Analog signal conversion,conditioning and isolation for process loop signals

Installation:Standard Spec‑200 rack slot,direct backplane bus connection

Signal type:Process analog input/output signal processing

Diagnostic:On‑board LED indicators for power and operating status

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

Housing:Plug‑in printed circuit board assembly with metal shielding bracket

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:0.39kg

Dimensions:33mm × 124mm × 140mm

Certification:CE,UL

MTBF:>88000 hours

Built‑in function

3C8‑C3D ST‑A signal converter circuit card receives raw analog process signals and completes signal scaling,conditioning and electrical isolation for Spec‑200 control rack. It converts field‑side signals into internal system‑level signals for subsequent control‑loop calculation. On‑board LED provides visual working status feedback for on‑site troubleshooting,enhances anti‑interference performance for petrochemical and chemical plant control loops.

Product Brief

3C8‑C3D belongs to Foxboro Spec‑200 legacy DCS spare‑part family,obsolete original plug‑in circuit card. Must be installed inside matching Spec‑200 instrument rack. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation