Overview
The Foxboro P0916JS, also cataloged as the FBM207B Contact Sense Input Interface Module, operates as a dedicated hardware component for isolated discrete signal acquisition within the Foxboro I/A Series and EcoStruxure Foxboro DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FBM207B |
| Full Part Number | P0916JS |
| Brand | Foxboro |
| Origin | USA |
| Module Type | 16-Channel Contact Sense / Voltage Monitor Input Module |
| System Platform | Foxboro I/A Series and EcoStruxure Foxboro DCS |
| Input Channels | 16 isolated discrete input channels |
| Input Signal Type | Dry contact and solid-state switch inputs |
| Contact Sense Voltage | 24 VDC +/-15% open-circuit voltage |
| Short-Circuit Current | 3.2 mA typical |
| Logic One ON-State Resistance | 1.0 kohm maximum |
| Logic Zero OFF-State Resistance | 100 kohm minimum |
| Channel Isolation | Individual channel isolation from other channels and earth ground |
| Power Supply Input | 24 VDC (+5%, -10%) redundant supply |
| Power Consumption | 4 W maximum |
| Heat Dissipation | 4 W maximum |
| Dimensions | 102 mm x 45 mm x 104 mm |
| Weight | Approx. 284 g |
| Operating Temp | -20 deg C to +60 deg C |
| Relative Humidity | 5% to 95% non-condensing |
| Environmental Rating | ISA Standard S71.04 Class G3 |
| Mounting Method | DIN rail or baseplate mount through Compression Termination Assembly |
| Configuration Mode | Single or redundant module configuration |
| Processing Functions | Discrete input processing, ladder logic, pulse counting, and SOE tracking |
Foxboro DCS Signal Isolation and Loop Interface Characteristics
The FBM207B applies channel-to-channel isolation to maintain electrical separation between discrete field inputs. Therefore, each input channel can process contact signals without introducing common ground interference between field devices.
Moreover, the module supports discrete input processing functions within the Foxboro I/A Series control architecture. The local processing capability allows the module to execute pulse counting, sequence of events tracking, and ladder logic functions before transferring data to the control system.
The FBM207B follows the Foxboro DCS I/O design approach used for process instrumentation interfaces. In addition, the isolated input structure supports connection of dry contacts and solid-state switches while maintaining signal integrity in industrial environments.
Frequently Asked Questions
Q: Does the FBM207B support isolated input channels?
A: Yes. The FBM207B provides 16 discrete input channels with individual isolation between channels and earth ground.
Q: What type of field devices can connect to the P0916JS input channels?
A: The module accepts dry contacts and solid-state switching devices using a 24 VDC contact sense input circuit.
Q: Can the FBM207B operate in redundant configurations?
A: Yes. The module supports single or redundant installation configurations within compatible Foxboro DCS architectures.
Field Installation Guidelines
Install the FBM207B on the specified DIN rail or baseplate assembly according to Foxboro mounting requirements. Ensure that field wiring maintains proper separation between discrete signal cables and high-voltage power conductors.
Connect cable shields according to the site grounding practice and avoid creating multiple grounding paths. Verify terminal connections before energizing the 24 VDC supply circuit.
For redundant installations, confirm that both module positions and termination assemblies match the approved Foxboro system configuration. Check environmental conditions to ensure compliance with the Class G3 harsh environment rating.
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