P0972QR | Foxboro | 32-Ch Termination Assembly Module

Product Overview

The P0972QR is a 32-channel termination assembly module manufactured by Foxboro (Invensys) for the I/A Series distributed control system. It provides high-density field wiring termination for both analog and digital I/O signals, interfacing field sensors, thermocouples, RTDs, and actuators with Foxboro FBM modules. The module supports a wide signal range with ±0.1% accuracy and 2000 V RMS isolation for reliable signal conditioning in process control environments.

Key Specifications

• System: Foxboro I/A Series
• Channels: 32
• Input/Output Type: Analog and digital
• Voltage Signal Range: -40 VDC to +80 VDC
• Current Signal Range: -20 mA to +20 mA
• Accuracy: ±0.1%
• Isolation Voltage: 2000 V RMS
• Operating Temperature: -40°C to +70°C
• Humidity: 0% to 95% RH, non-condensing
• Dimensions: 145 × 170 × 40 mm
• Weight: 750 g

Features & Benefits

1. 32-Channel Density: High channel count reduces termination footprint in control cabinets.
2. Universal Analog & Digital Support: Handles both voltage/current analog signals and discrete digital I/O on a single assembly.
3. Wide Signal Range: -40 V to +80 VDC and ±20 mA coverage accommodates diverse field instrument types.
4. High Accuracy: ±0.1% precision ensures faithful signal transmission to FBM input modules.
5. High-Voltage Isolation: 2000 V RMS isolation prevents ground loops and protects system electronics from field transients.
6. Cold Junction Compensation: Integrated terminal compensation networks support direct thermocouple and RTD connection with uniform thermal referencing.

FAQ

Q: What is the difference between P0972QR and P0972QL?
A: The P0972QR is a 32-channel termination assembly module for analog and digital I/O. The P0972QL is an isolated 16-channel output switch module with a different function and channel count.

Q: Which FBM modules are compatible with the P0972QR?
A: The P0972QR interfaces with Foxboro FBM200-series and compatible I/O modules. Verify specific FBM model compatibility via the I/A Series wiring manual.

Q: Does the module provide loop power for 2-wire transmitters?
A: The P0972QR is a termination assembly primarily for signal routing and conditioning. Loop power distribution depends on the upstream FBM module and field power configuration.

Installation Guide

• Mount the termination assembly on a panel or DIN rail inside the control cabinet.
• Connect field instrument wiring to the designated terminal blocks per the I/A Series wiring diagram.
• Connect the assembly to the FBM module using the appropriate Foxboro system cable.
• Verify shield grounding at a single point to prevent ground loops.
• Check each channel for continuity and correct polarity before energizing the control loop.

Selection Tips

• Channel Count: The P0972QR provides 32 channels. For lower density requirements, consider 16-channel termination assemblies.
• Signal Mix: Verify your field devices require analog (-40V to +80V, ±20mA) and digital I/O compatibility.
• Isolation Needs: For applications with high common-mode voltage or ground potential differences, the P0972QR's 2000 V RMS isolation provides necessary protection.
• FBM Matching: Confirm your FBM module catalog number supports the P0972QR termination assembly before ordering.