Foxboro P0926GH Power Supply Module

Description

Foxboro P0926GH Power Supply Module

Product Dimensions：

The Foxboro P0926GH is a high-performance Termination Assembly (TA) designed for the I/A Series (now part of the EcoStruxure Foxboro DCS) distributed control system. It serves as the physical interface between field communication devices and the FBM224, FBM230, or FBM231 Field Device System Integrator (FDSI) modules.

Product Detailed Description

The P0926GH is a Compression-Screw type Polyamide Termination Assembly. Its primary role is to provide a secure and organized landing point for field wiring. Specifically, it facilitates 4-channel serial communication (RS-232, RS-422, or RS-485) by converting the high-density signals from the FBM module into accessible terminals and standard connectors for external devices like Modbus RTUs, flow meters, or motor controllers.

Technical Parameters

Product Advantages

• Multi-Protocol Support: Allows each of the four ports to be independently configured for different electrical standards (RS-232 vs. RS-485), providing immense flexibility in mixed-device environments.
• Integrated Switches: Features built-in DIP switches to match the RS-232 signal pinouts of various field devices and to enable/disable termination resistors for RS-485 buses without external components.
• Compact Design: The Polyamide housing is durable and designed for high-density DIN rail mounting, saving valuable cabinet space.
• Reliable Connection: Compression screw terminals provide a gas-tight, vibration-resistant connection, which is superior to standard plug-in terminals in industrial settings.

Important Considerations (Precautions)

• Supersession: Note that the P0926GH has been largely superseded by the RH926GH in newer installations, though they remain functionally compatible in many legacy systems.
• Wiring Distance: When using RS-232 through the DB-25 ports, keep cable lengths under 15 meters to prevent signal degradation. For longer runs, utilize the RS-422 or RS-485 terminals.
• Shielding: To prevent EMI/RFI interference in serial data transmission, ensure that the communication cable shields are properly landed on the TA ground bar.
• Switch Configuration: Ensure the DIP switches on the TA are correctly set to match your field device’s wiring (e.g., CTS/RTS jumpers) before powering up the FBM.

Product Applications

The P0926GH is used in mission-critical process automation where the Foxboro DCS needs to talk to third-party hardware:

• Power Plants: Connecting the DCS to protection relays or turbine control panels via Modbus.
• Oil & Gas: Interfacing with Flow Computers or Tank Gauging systems in refineries.
• Water Treatment: Communicating with remote PLCs or VFDs distributed across a facility.
• Manufacturing: Integrating smart instruments like weighing scales or barcode readers into the plant control logic.

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