Description
Product Core Brief
- Model: FBM241C
- Brand: FOXBORO
- Series: I/A Series DCS
- Core Function: Processes 8 channels of contact sense inputs and 8 channels of discrete outputs with external power sourcing.
- Product Type: Discrete Input/Output Interface Module
- Key Specs: 8 DI / 8 DO, External Power, P0914WM
- Condition: New Original (New Surplus)

FOXBORO FBM241C
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Discrete Input/Output Interface Module |
| Input Channels | 8 Isolated Contact Sense Inputs |
| Output Channels | 8 Isolated Discrete Outputs |
| Output Power Source | External 24 Vdc (Required) |
| Alternate Part Numbers | P0914WM, P0916JW, P0916AW |
| System Compatibility | FOXBORO I/A Series DCS |
| Communication | Redundant 2 Mbps Module Fieldbus |
| Environmental Rating | G3 Level (Harsh Environment) |
Product Introduction
Combining discrete inputs and outputs in a single module reduces cabinet footprint while maintaining signal isolation. The FOXBORO is an 8-channel discrete I/O interface module for the I/A Series DCS, providing contact sense inputs and discrete outputs in one compact package. Crucially, this “C” variant requires external 24 Vdc to power the output relays, distinguishing it from internally powered variants.
This module integrates natively with 200 Series baseplates and communicates via a redundant 2 Mbps fieldbus. Field engineers specify the exact because the external power requirement dictates specific wiring and protection schemes; substituting an internally powered module without rewiring will result in dead output channels.
Key Selling Points & Differentiators
- Exact External Power Variant: Designed specifically for applications with dedicated external 24 Vdc output supply; not recommended for cabinets relying on internal backplane power for outputs (use FBM241B/D instead).
- High-Density Combined I/O: Consolidates 8 discrete inputs and 8 discrete outputs in a single FBM footprint, reducing rack space and marshalling complexity.
- Robust Contact Sense Inputs: Features noise-immune contact sensing ideal for limit switches, pushbuttons, and relay contacts in high-EMI environments.
- Rigorous Live Bench Testing: Every unit undergoes a 24-hour continuous load test with fieldbus communication verification and full-scale I/O simulation before shipping.
- New Surplus Availability: Factory-sealed condition with verified source traceability, bypassing typical OEM lead times for discontinued I/A Series hardware.
- Anti-Counterfeit Verification: Serial numbers are checked against manufacturer databases during incoming inspection to guarantee authenticity.

FOXBORO FBM241C
FAQ
Yes, the integrates natively with 200 Series baseplates and FCP-based controllers. However, always verify your system’s exact firmware revision and backplane configuration before ordering. Mixing incompatible FBM revisions can cause fieldbus communication failures.
No. The FBM241B uses internal backplane power for outputs, while the requires external 24 Vdc. Substituting a B variant for a C variant without verifying external power wiring will result in non-functional outputs. Always match the exact suffix to your power architecture.
Do I need to configure the fieldbus address before installing?
Yes. The requires fieldbus address configuration via DIP switches or software configuration in the I/A Series control builder. I always recommend backing up your control strategy, verifying the fieldbus address matches your system design, and running a fieldbus scan after installation to confirm communication.
What happens if I don’t connect external power to the output terminals?
The output relays will not energize. The does not source output power from the backplane; it only switches the external supply. You must wire a regulated 24 Vdc source to the designated external power terminals on the termination assembly.
Is there a warranty on this new surplus unit?
Yes. All new surplus modules come with a standard 12-month functional warranty. If the unit fails during normal operation within that period, we provide a direct replacement. We also include our internal test report with every shipment so you can verify the 24-hour load test and fieldbus communication results before installation.

