Honeywell 51304584-100 EPDGP Board – Rev G+ Compatible DCS I/O Card

Brand
Model Honeywell 51304584-100 EPDGP

Product Overview

The Honeywell 51304584-100 is an EPDGP (Extended Peripheral Data Gateway Processor) I/O board engineered specifically for the Honeywell TDC 3000 Distributed Control System platform. As the peripheral interface board for the Universal Station, the 51304584-100 serves as the critical hardware bridge connecting the operator console to the station’s video display, keyboard input devices, cursor control, and external storage peripherals. This board enables the Universal Station to function as the primary human-machine interface within Honeywell DCS environments, facilitating the operator interactions that drive process control decisions.

Within the TDC 3000 architecture, the 51304584-100 occupies a dedicated slot in the Universal Station chassis and provides the physical connection points for the station’s CRT monitor, keyboard interface, and auxiliary devices. The board supports both the Engineer’s Keyboard and Supervisor’s Keyboard configurations, with a hardware option that determines which keyboard type is active when both are installed. This flexibility allows the same 51304584-100 to serve different operational roles within the control room environment without requiring separate hardware variants.

The 51304584-100 is positioned as a legacy DCS component, reflecting Honeywell’s long-standing commitment to backward compatibility and system longevity. For facilities operating TDC 2000 or TDC 3000 systems, this board represents a critical spare part for maintaining Universal Station functionality. The revision level of the board matters significantly: Rev G or above is required when the station is equipped with Bernoulli or Zip drives, making revision verification essential during procurement. As an interface board rather than a control processing element, the 51304584-100 directly impacts operator visibility and interaction with the process, underscoring its importance in maintaining continuous plant operations.

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Description

 

Technical Specifications

Parameter Name Parameter Value
Product Model 51304584-100
Manufacturer Honeywell
Product Type EPDGP I/O Board (Peripheral Interface)
Compatible System TDC 2000 / TDC 3000, Universal Station
Supported Devices Video, Keyboard, Cursor Control, Zip/Bernoulli Drive, Printer
Keyboard Compatibility Engineer’s Keyboard or Supervisor’s Keyboard
Revision Requirement Rev G or above for Bernoulli/Zip drive support
Incompatible Interfaces 51401952-100 / 51401952-200 keyboard interfaces
Alternative Models for Incompatible Interfaces 51304584-200 / 51304584-300
Dimensions Approximately 22.3 cm × 14 cm × 2.5 cm
Weight Approximately 0.18 kg
Category Micro TDC Stations, Universal Stations (Classic), Universal Workstations

 

Main Features and Advantages

Multi-Peripheral Interface Capability: The 51304584-100 consolidates connections for multiple operator station peripherals onto a single board. Video output, keyboard input, cursor control signals, external storage drives, and printer interfaces are all routed through this board, reducing cable complexity and connection points within the Universal Station chassis. This integrated approach simplifies troubleshooting and replacement procedures, as a single board swap restores functionality across multiple peripheral subsystems.

Keyboard Configuration Flexibility: The 51304584-100 includes a hardware configuration option that accommodates either the Engineer’s Keyboard or the Supervisor’s Keyboard. When both keyboards are installed in the same station, the board is configured for the Supervisor’s Keyboard, with the Engineer’s Keyboard daisy-chained through the Supervisor’s Keyboard connection. This design eliminates the need for separate interface boards when stations serve dual operational roles, providing cost savings and inventory simplification for facilities with mixed keyboard configurations.

CRT Background Default Options: The 51304584-100 features pinning options that establish the default background shade for the CRT when no palette has been set in a schematic. This capability, particularly relevant in Release 320 and later TDC 3000 environments, ensures consistent display appearance during startup or after configuration resets, reducing operator confusion and maintaining visual standardization across multiple stations.

Compatibility and Revision Management: The 51304584-100 is explicitly designed for use with EPDG and EPDG2 peripheral interfaces, serving as the newer card version for these applications. Understanding revision requirements is essential: Rev G or above must be used on stations equipped with Bernoulli or Zip drives, while earlier revisions may be suitable for stations without these storage devices. This revision-dependency underscores the importance of verifying board revision against station configuration before procurement or replacement.

 

Application Field

The 51304584-100 is deployed exclusively within Honeywell TDC 2000 and TDC 3000 Distributed Control System environments, specifically in Universal Station and Universal Workstation configurations. These stations represent the primary operator interface points in legacy DCS installations, where the 51304584-100 enables the visual and interactive functions that operators rely upon for monitoring and controlling continuous processes. Power generation facilities, petrochemical complexes, and large-scale manufacturing operations that have maintained their Honeywell DCS infrastructure depend on this board to keep operator consoles functional.

In process industries where TDC 3000 systems remain in service, the 51304584-100 supports critical human-machine interface functions. The board’s video and keyboard interfaces allow operators to navigate process schematics, acknowledge alarms, adjust setpoints, and execute control actions. When the 51304584-100 fails, operators lose access to the visualization and input capabilities of the Universal Station, potentially forcing a fallback to secondary control methods or emergency procedures. This direct impact on operational capability makes the 51304584-100 a high-priority spare for facilities running Honeywell legacy DCS platforms.

Beyond primary process control applications, the 51304584-100 supports engineering and maintenance workstations within the same DCS ecosystem. Engineering personnel use Universal Stations equipped with this board to modify control logic, update process graphics, and perform system configuration tasks. The board’s printer interface enables hardcopy documentation of process data, alarm logs, and configuration records—functions that remain relevant for regulatory compliance and incident investigation in industries such as pharmaceuticals and specialty chemicals. As TDC 3000 systems continue operating well beyond their original design lifecycles, the 51304584-100 remains an essential component for sustaining these platforms.