TheFoxboro FBM217 (RH916XZ)is a high-density Discrete Input module designed for the EcoStruxure Foxboro DCS and I/A Series systems. This module provides 32 input channels for monitoring "dry" (voltage-free) contacts or 24VDC discrete signals from field devices such as pushbuttons, limit switches, and motor starter status contacts. Its compact design and high point count make it an efficient solution for large-scale industrial monitoring.
Specifications
Part Number:FBM217 / RH916XZ
Input Channels:32 isolated points
Input Type:24VDC Contact Sense (Discrete)
Input Current:2.2mA per channel (nominal)
On-State Voltage:15 to 30 VDC
Off-State Voltage:0 to 5 VDC
Isolation:2500 Vrms (Group isolation between field and logic)
Power Requirements:24VDC (sourced from the baseplate)
Operating Temperature:-20°C to +70°C (-4°F to +158°F)
Mounting:Modular 200 Series Baseplate
Features
High-Density Configuration:Supports 32 channels in a single module slot, significantly reducing the required cabinet space and baseplate overhead.
Fault-Tolerant Redundancy:Can be paired with a second FBM217 in a redundant configuration to ensure continuous signal monitoring in the event of a module failure.
Configurable Input Filtering:Features software-adjustable digital filters to prevent signal "chatter" or false triggering caused by mechanical contact bounce or electrical noise.
Hot-Swappable:Supports online replacement while the system is energized, allowing for maintenance and upgrades without interrupting the Field Control Processor (FCP).
Comprehensive Diagnostics:Continuously monitors internal hardware health and communication status with the system backplane, reporting faults immediately to the DCS.
Status Visibility:Equipped with front-panel LED indicators for quick visual verification of module power, operational health, and communication activity.
