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Foxboro P0916NG Compression Termination Assembly

The Foxboro P0916NG, also cataloged as the P0916NG Compression Termination Assembly, operates as a dedicated hardware component for physical field wiring distribution and loop execution within Foxboro I/A Series DCS networks. The hardware functions as a 2-tier relay discrete output isolation block, routing and conditioning discrete control signals between external field relay circuits and host fieldbus modules.

Hardware Specifications

Parameter Specification
Model P0916NG
Brand Foxboro (Schneider Electric)
Origin USA
Weight 1.72 lbs
Dimensions 147 mm x 51.5 mm x 114 mm
Operating Temp -20 to +60 deg C
Power Consumption <= 8.5 W
Circuit Architecture 2-tier relay discrete output
Termination Type Screw-clamp terminals
Redundancy Switching Time < 10 ms
Signal Response Time < 50 ms
Input Voltage Options 100-120 V AC / 24 V DC configuration dependent
Output Voltage Range 5-30 V DC
Enclosure Rating IP20 (cabinet installation required)
Storage Temp -40 to +85 deg C

Process Control & DCS Instrumentation Properties

The termination assembly incorporates a 2-tier physical array to enforce galvanic separation between inductive field relay loops and the primary digital backplane logic. This channel-to-channel isolation architecture suppresses high-voltage inductive switching transients and localized electromagnetic cross-talk. The subsystem interface is engineered to maintain a deterministic redundancy switching time of less than 10 ms when paired with redundant I/O configurations, ensuring continuous, uncompromised fail-safe state execution without dropping critical fieldbus data frames.

Frequently Asked Questions

Q: Can an FBM module mapped to this termination assembly be extracted while the system is powered?

A: Yes, the hot-swappable hardware layer allows active fieldbus modules to be extracted or inserted without interrupting the discrete loop state or disconnecting the field wiring secured to the screw terminals.

Q: What is the maximum line response delay through the internal relay isolation circuits?

A: The total signal response time from the backplane command transition to the physical state change at the screw terminals is rated at less than 50 ms under full electrical load parameters.

Field Installation Guidelines

  • Terminal Block Wiring: Strip incoming discrete signal lines to specified lengths and secure them into the 2-tier screw-clamp terminals. Ensure conductors are properly sized to prevent loose connections or physical binding inside the track.
  • Shield Grounding Protocol: Terminate all external control cable drain wires directly to the master instrumentation grounding bar inside the panel cabinet. Do not configure ground paths at both ends of the wire run to avoid ground loop contamination.
  • DIN Rail Stability: Slide the assembly onto standard symmetric DIN rails and verify that the mechanical locking feet are fully extended and locked to ensure long-term structural alignment against machine-induced vibrations.

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