Product Details:

FOXBORO FBM207B is a 16-channel galvanically isolated contact sensing discrete input fieldbus module of FOXBORO Compact 200 I/A Series DCS. It is designed for 24VDC contact monitoring, detecting open/closed status from field dry contacts and mechanical switches. Each channel features independent channel-to-channel galvanic isolation, protecting the DCS system from field-side electrical noise and ground loops. Users can configure channel debounce time including 4ms,8ms,16ms,32ms or disable filtering to eliminate contact bounce interference. The PCB adopts conformal coating to withstand dust, humidity and vibration inside industrial control cabinets. It communicates with FCP controller over redundant 2Mbps fieldbus. Built-in continuous self-diagnosis detects abnormal circuit status and channel faults, triggers alarms so maintenance staff can quickly locate wiring or switch failures. FBM207B supports hot swap and redundant module pair configuration, widely used for DCS maintenance, spare parts replacement and system retrofit projects. Every FOXBORO FBM207B module passes factory testing and calibration before shipment.

Specifications:

Model:FBM207B

Brand:FOXBORO

Product Type:16 Channel 24VDC Contact Sense Discrete Input Module

System compatibility:FOXBORO I/A Series DCS

Input signal:24VDC contact sensing,16 isolated channels

Debounce filter:Configurable 4ms /8ms /16ms /32ms or no filter

Isolation:600V channel-to-channel and channel-to-ground

Communication:Redundant 2Mbps module fieldbus

Redundancy:Support redundant module configuration

Diagnosis:Built-in self-diagnosis,channel fault detection

Power supply:24VDC redundant

Hot swap:Supported

Ambient operating temperature:0℃ ~ +60℃

Relative humidity:5% ~ 95%,non-condensing

Installation:Rack card mounting on 200 series baseplate

Environmental grade:G3 harsh environment

FBM207B is the 24VDC contact-sensing variant of FBM207 family, different from FBM207 wide DC voltage version and FBM207C 48VDC model. Its internal 24V excitation for contact sensing simplifies field wiring for safety interlock switches and valve limit feedback. Adjustable debounce settings make it stable for mechanical switches that generate transient bounce signals. It is commonly deployed for safety shutdown system contact feedback and boiler auxiliary equipment status monitoring in petrochemical and power plants, and serves as direct replacement for aging 24V contact input cards on legacy I/A DCS systems. Every FOXBORO FBM207B module passes factory testing and calibration to guarantee reliable process control performance.