Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | FBM219 discrete I/O module |
| Part Number | P0916RH |
| Inputs | 24 channels, group-isolated voltage monitor |
| Outputs | 8 discrete output channels, switch (external source) |
| Communication | Redundant 2 Mbps module bus to FCM or FCP |
| Supply Voltage | 24 VDC, +5% / -10% (redundant) |
| Power Dissipation | Max 5 W at 24 VDC (module-level figure; verify with OEM) |
| Input On-State Voltage | 15 to 30 VDC typical |
| Input Off-State Voltage | 0 to 5 VDC |
| Input Current | Approx. 2.2 mA at 30 VDC |
| Input Filter/Jitter | Configurable: none, 4 ms, 8 ms, 16 ms, 32 ms |
| Operating Temperature | -20 to +60 °C (compact FBM219); terminal assembly may differ |
Product Introduction
Replacing a failed I/O card in a live I/A Series node is not the time to discover a part-number typo. The FBM219 P0916RH is often mislabeled in surplus listings, but the module itself is straightforward: a 24-input voltage-monitor and 8-output discrete card for Foxboro I/A Series field bus nodes.
It sits on the 2 Mbps redundant module bus and reports status back to the associated FCM/FCP. The group-isolated inputs make it useful for status monitoring of relays, valve position switches, breaker auxiliaries, and permissive circuits. The outputs are discrete, not analog, so do not confuse this with a 4–20 mA card. Verify the terminal assembly and output source type before pulling the old module.
FOXBORO FBM219 RH916RH
QA/QC Transparency SOP
- Intake & Origin Verification: Photograph the label, P0916RH marking, serial number, and connector pins. Reject units with bent pins, corrosion, or mismatched labels.
- Live Functional Testing: Install in a compatible I/A Series rack. Confirm module recognition, status LEDs, and 2 Mbps bus communication with the FCM/FCP.
- Electrical Parameter Tests: Apply 24 VDC supply within tolerance. Inject known DC voltages into input channels and verify on-state/off-state detection. Test each discrete output for correct switching behavior.
- Firmware/Config Verification: Read module identification and firmware revision. Back up configuration data and confirm compatibility with the host controller version.
- Final QC & Anti-Static Packaging: Record test results per channel. Pack in ESD-safe bags with desiccant and include photos, revision data, and test logs.
Field Engineer Gotchas
- Part number confusion: “RH916RH” is not the correct number. The correct P/N is P0916RH. Ordering against the wrong number risks receiving an unrelated module.
- Output type mismatch: FBM219 provides discrete outputs, not analog 4–20 mA. If the loop expects analog control, this is the wrong card.
- Terminal assembly compatibility: The FBM must mate with the correct terminal assembly. Wrong TA wiring can cause false inputs or output failures.
- External-source outputs: The 8 outputs are listed as switch (external source). Do not assume internal power; verify the external supply and wiring.
- Input filtering: Configurable filter times (4/8/16/32 ms) affect response. If a replacement module has different filter settings, permissive logic or trip indications may behave differently.
FOXBORO FBM219 RH916RH
Application Scenarios
- Power plant auxiliary status monitoring: Monitors breaker auxiliaries, relay contacts, and valve limit switches across 24 isolated inputs while driving discrete alarms or permissive outputs.
- Refinery ESD permissive monitoring: Reads valve position and pressure-switch status inputs, then provides discrete outputs to indication circuits or interlock logic.
- Water/wastewater pump station control: Monitors pump run, fault, and valve position signals; drives discrete outputs for local indication or interlocks.
FAQ
Is P0916RH the same as RH916RH?
No. The correct part number is . “RH916RH” is a common misread.
No. It provides 24 voltage-monitor inputs and 8 discrete outputs. It is not an analog output module.
Can it be hot-swapped?
Foxboro I/A Series FBMs are generally designed for field replacement, but hot-swap behavior depends on system configuration and redundancy status. Follow site procedures and OEM guidance.
What terminal assembly does it need?
The exact TA depends on the application and wiring scheme. Confirm against the installed documentation before replacement.
Is this module still supported?
is widely available through surplus and refurbishment channels. For lifecycle status and replacement guidance, verify with Schneider Electric/Foxboro documentation.
How do I verify a refurbished unit?
Check the label, test all 24 inputs and 8 outputs, confirm bus communication, and record firmware/revision data before installation.
