Honeywell 51400926-100 Enhanced PDG Processor / I/O Control Board

The Honeywell 51400926-100 is an Enhanced PDG Processor and I/O Control Board designed for Honeywell TDC 3000 Distributed Control System platforms. The board provides processing, communication, and interface functions within the control system architecture, supporting connections to operator and peripheral devices while facilitating data exchange between processing and I/O resources.

Technical Specifications

Processing and Control Functions

The board combines processor and I/O interface capabilities within a single assembly for use in TDC 3000 control environments. Its 32-bit processing architecture supports execution of control-related functions, data handling, and communication management tasks within the system.

The onboard memory configuration includes 256 KB RAM and 1 MB Flash memory for storage of operating data, firmware, and application-related information.

Communication Capabilities

The 51400926-100 supports multiple communication interfaces, including Ethernet, RS-232, and USB connectivity. Support for Modbus RTU and Modbus TCP protocols allows integration with compatible devices and subsystems that utilize standard industrial communication methods.

These interfaces enable the board to exchange operational data with external devices and control system components while supporting system-level communication requirements.

Interface Integration

The board is designed to interface with a variety of peripheral equipment commonly used in industrial control environments. Supported interface applications include connections to:

• Monitors

• Keyboards

• Touchscreen devices

• Industrial drives

• Printers

This functionality allows the board to participate in both operator-oriented and equipment-oriented control system configurations.

Mechanical Construction

The module is supplied in a standard Honeywell rack-mount PCB format suitable for installation within compatible TDC 3000 system assemblies. A protective coating is applied to the board to provide additional protection against contamination and environmental exposure inside control cabinets.

Because the module is intended for rack-based installation, replacement units should match the original part number and system configuration requirements.

System Compatibility

The 51400926-100 is specified for Honeywell TDC 3000 Distributed Control System platforms. Compatibility with the installed system revision, processor configuration, and associated hardware should be verified during maintenance or upgrade activities.

The board functions as a control and communication component within the broader DCS architecture rather than as a standalone controller.

Frequently Asked Questions

Q: Which Honeywell systems use the 51400926-100 board?

A: The module is specified for Honeywell TDC 3000 Distributed Control System platforms.

Q: What communication interfaces are available on the board?

A: The board supports Ethernet, RS-232, and USB communications, with Modbus RTU and Modbus TCP protocol support.

Q: What memory resources are provided?

A: The specified configuration includes 256 KB RAM and 1 MB Flash memory.

Q: Can the board interface with operator devices?

A: Yes. The module is described as supporting connections to monitors, keyboards, touchscreens, printers, and compatible industrial devices.