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Foxboro FBM219 P0917LH0C I/A Series Discrete I/O Module

The Foxboro FBM219 P0917LH0C, also cataloged as the FBM219 Discrete I/O Interface Module, operates as a dedicated hardware component for high-density digital signal processing and event recording within Foxboro I/A Series DCS networks. The module monitors field contact states and drives discrete control outputs across dual redundant 24 VDC backplane power buses.

Hardware Specifications

Parameter Specification
Model FBM219 P0917LH0C
Brand Foxboro (Schneider Electric)
Origin USA
Weight 0.32 kg
Dimensions 4.6 cm x 11.0 cm x 11.5 cm
Operating Temp -20 deg C to +70 deg C
Power Consumption 8.5 W max
Channel Density 32 discrete channels (24 inputs, 8 outputs)
Input Voltage Support 30 VDC, 125 VDC, 120/240 VAC
SOE Resolution 1 ms time-stamping
Input Filtering Software-selectable 4 ms to 255 ms debounce
Isolation Voltage 600 VAC channel-to-earth, group-to-group
Power Supply 24 VDC redundant input via baseplate

Channel-to-Channel Isolation & Sequence of Events Recording

The FBM219 P0917LH0C incorporates galvanically isolated group structures rated for 600 VAC isolation between input channels and internal logic circuits. This isolation suppresses common-mode ground noise and prevents high-voltage field surges from degrading DCS backplane communications. Integrating continuous 1 ms Sequence of Events (SOE) resolution, the internal digital processing unit timestamps state transitions at the module level prior to transmitting buffered diagnostic packets over the system bus.

Frequently Asked Questions

Q: How does the module process different field voltage levels across the 32 channels?

A: Input channels accept field discrete signals operating at 30 VDC, 125 VDC, or 120/240 VAC. The module conditions these signals down to system logic levels (High >15 VDC, Low <5 VDC) while maintaining galvanic isolation across channel groups.

Q: Can the FBM219 be hot-swapped during active system operations?

A: Yes, operators can perform live hot-swapping on the active baseplate without disrupting adjacent operational I/O modules or interrupting backplane communication traffic.

Q: What termination hardware is required to wire field devices to this module?

A: The module requires interface integration with the dedicated P0917LH external termination assembly to correctly route field wiring to the backplane connectors.

Field Installation Guidelines

Observe the following field installation procedures during system panel wiring and hardware integration:

  1. Insert the FBM219 module into its assigned baseplate slot until the upper and lower retaining latches lock firmly.
  2. Route high-voltage AC field lines away from low-voltage digital signal wiring inside the enclosure raceways to minimize inductive coupling.
  3. Terminate field fieldbus cables directly to the associated P0917LH termination assembly according to channel assignment schematics.
  4. Ensure the enclosure maintains clean airflow and operates within the environmental temperature window of -20 deg C to +70 deg C.
  5. Ground all cable shielding at the designated panel ground bus to provide a low-impedance earth return path for transient voltage spikes.

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