Description
Core Product Summary (Brand / Model / Key Attributes)
The Foxboro FBM219 is a Discrete I/O Module for the Foxboro I/A Series and EcoStruxure Foxboro DCS 200 Series subsystem. It provides 24 discrete input channels and 8 discrete output channels in a single module.
Associated termination assemblies support input and output signals at voltages of 15–60 VDC, 120 VAC/125 VDC, and 240 VAC. Channels are group-isolated. The module executes Discrete I/O or Ladder Logic application programs with configurable input filtering, fail-safe options, and sustained or momentary output behavior. It can replace the functionality of selected 100 Series FBM discrete I/O combinations when paired with the appropriate termination assemblies.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Discrete I/O Interface Module |
| Input Channels | 24 group-isolated discrete inputs |
| Output Channels | 8 group-isolated discrete outputs |
| Supported Voltages (via TA) | 15–60 VDC; 120 VAC/125 VDC; 240 VAC |
| Input On-State Voltage | 15 to 30 VDC |
| Input Off-State Voltage | 0 to 5 VDC |
| Input Current | 2.2 mA typical at 30 VDC |
| Source Resistance Limits | On-state ≤ 1 kΩ at 15 VDC; Off-state ≥ 100 kΩ at 30 VDC |
| Output Ratings (via TA) | 30 VDC at 0.25 A or 5 A; 125 VDC at 0.6 A; 120 VAC at 5 A; 240 VAC at 5 A (switch, external or internal power) |
| Filter / Debounce Time | Configurable: None, 4 ms, 8 ms, 16 ms, or 32 ms |
| Isolation | Group isolation for inputs and outputs |
| Application Programs | Discrete I/O or Ladder Logic |
| Configurable Options | Input Filter Time, Fail-Safe Configuration, Fail-Safe Fall-Back, Sustained or Momentary Outputs |
| Communication | Module Fieldbus (redundant 2 Mbps) |
| Power Supply (Redundant) | 24 V DC +5 % / –10 % |
| Environmental Rating | Suitable for Class G3 (harsh) environments |
| Typical Part Numbers | P0916RH, P0917LH and related revisions |
Detailed Product Overview
The Foxboro FBM219 combines high-density discrete input monitoring with discrete output switching in one 200 Series Fieldbus Module. The 24 input channels accept 2-wire signals for voltage monitoring or contact sensing. On-state and off-state thresholds are defined for reliable detection of DC voltage presence or dry-contact closure. Configurable digital filtering rejects contact bounce and electrical noise.
The 8 output channels function as switches that can be powered from an external source or, depending on the termination assembly, from an internal source. Output ratings vary by termination assembly and support a range of DC and AC loads up to the limits listed in the specifications. Fail-safe configuration, fall-back behavior, and sustained or momentary output modes are selectable in the application program.
When used with the correct termination assemblies, the FBM219 provides the functionality previously delivered by combinations of 100 Series main and expansion discrete I/O modules. Termination assemblies supply the necessary voltage attenuation, optical isolation, current limiting, and field power connections. The module communicates with the associated Fieldbus Communications Module or Field Control Processor over the module Fieldbus and is designed for Class G3 harsh industrial environments.
FBM219
FBM219
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| System Family | Foxboro I/A Series / EcoStruxure Foxboro DCS | 200 Series Fieldbus Module subsystem |
| Fieldbus | Module Fieldbus (redundant 2 Mbps) | Connects to FCM or FCP |
| Power Supply | Redundant 24 V DC +5 % / –10 % | Standard baseplate power |
| Termination Assembly | Voltage- and function-matched TA | Determines input/output voltage range, isolation, and power source |
| Isolation Scheme | Group isolation | Confirm TA type for specific isolation needs |
| Application Programs | Discrete I/O or Ladder Logic | Configurable filter, fail-safe, and output mode options |
| Legacy Migration | Compatible with selected 100 Series discrete I/O functionality | Requires appropriate TAs for direct replacement |
| Environmental | Class G3 (harsh) | Suitable for industrial process areas |
Dimensions, Mounting & Connection Notes
The FBM219 is a standard 200 Series Fieldbus Module form factor. It mounts on a DIN-rail or modular baseplate. Field wiring is terminated on a dedicated termination assembly that may be local or remote. Higher-voltage termination assemblies incorporate attenuation and optical isolation. Output current capacity and internal/external power options are determined by the specific termination assembly chosen. Installation follows normal 200 Series practices and must remain within Class G3 environmental limits.
Engineering Selection Highlights
- Select FBM219 when a mixed discrete I/O requirement (approximately 3:1 input-to-output ratio) must be met in a single module slot.
- Match the termination assembly to the required field voltages and to whether outputs need internal or external power.
- Use the configurable filter times to optimize noise rejection versus response speed for the discrete inputs.
- Configure fail-safe and fall-back options to meet process continuity or safety requirements on the outputs.
- Choose sustained or momentary output modes according to the actuator or interlock logic needs.
- Confirm that the control software is set for the Discrete I/O or Ladder Logic application program.
- Verify that the selected termination assembly supports the desired isolation and current ratings.
FAQ
What is the Foxboro FBM219?
The Foxboro FBM219 is a Discrete I/O Module that provides 24 discrete input channels and 8 discrete output channels for the I/A Series and EcoStruxure Foxboro DCS.
How many inputs and outputs does it have?
24 group-isolated discrete inputs and 8 group-isolated discrete outputs.
What voltage levels are supported?
Via the appropriate termination assembly: 15–60 VDC, 120 VAC/125 VDC, and 240 VAC for both inputs and outputs.
What filtering options are available?
Input filter/debounce time is configurable: none, 4 ms, 8 ms, 16 ms, or 32 ms.
What application programs does it support?
Discrete I/O or Ladder Logic, with options for input filter time, fail-safe configuration, fail-safe fall-back, and sustained or momentary outputs.
Can it replace older 100 Series discrete I/O modules?
Yes. When used with the correct termination assemblies it provides the functionality previously supplied by certain 100 Series main and expansion discrete I/O combinations.
Verification & Troubleshooting Notes
- Confirm module identity by the FBM219 designation and part number on the label and by successful recognition on the Fieldbus.
- Verify that the termination assembly matches the field voltages and the required input/output power scheme.
- Check that the 24 V DC redundant power is present and within tolerance.
- Observe channel status LEDs and control-system diagnostics for input state and output command verification.
- Review the configured filter time if contact bounce or noise is observed on inputs.
- Confirm fail-safe and output-mode settings match the process requirements.
- Module replacement should be performed only after verifying power, Fieldbus integrity, and correct termination-assembly matching.
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