Description
The WESTINGHOUSE 5X00300G02 is a high-reliability MMI Station Gateway Module for the WDPF II (Westinghouse Distributed Processing Family) distributed control system, serving as the critical communication nexus between operator workstations and control processors. This module enabled real-time data visualization and command execution across power generation and industrial facilities by interfacing CONDUCTOR® operator consoles with the peer-to-peer data highway. Designed for 24/7 operation in harsh control room environments, the 5X00300G02 handled data concentration, protocol conversion, and graphics rendering for up to four operator stations simultaneously. Its fault-tolerant architecture featured redundant communication paths and automatic failover, ensuring uninterrupted human-machine interaction during turbine startups, grid synchronization, and emergency shutdown procedures.
As part of Westinghouse’s legacy infrastructure (now supported by Emerson), the WESTINGHOUSE 5X00300G02 revolutionized control room operations in the 1990s by replacing hardwired panels with dynamic CRT displays. The module processed live analog/digital data from hundreds of field points while executing safety interlock logic for display permissions. Radiation-hardened variants (5X00300G02-N) met IEEE 323 standards for nuclear control rooms, where it managed non-safety monitoring displays for reactor auxiliary systems.

5X00300G02 WESTINGHOUSE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 5X00300G02 |
| Manufacturer | Westinghouse (Emerson Process Management) |
| Product Type | MMI Station Gateway |
| System Platform | WDPF II DCS |
| Workstation Support | Up to 4 CONDUCTOR® Operator Consoles |
| Data Throughput | 1.2 Mbps sustained (per station) |
| Protocols | Peer-to-Peer Data Highway, RS-232/422 |
| Graphics Capability | 1024×768 resolution @ 60Hz (CRT) |
| Processor | 32-bit RISC + Dedicated Graphics Coprocessor |
| Memory | 8MB DRAM, 4MB VRAM |
| Redundancy | Hot-Standby Configuration |
| Alarm Handling | 500 alarms/second with timestamping |
| Power Supply | 90-264V AC, 50/60Hz (Integrated) |
| Operating Temperature | 5°C to 55°C (41°F to 131°F) |
| Certifications | UL 60950, IEEE 323 (Nuclear), NRC RG 1.180 |
| Dimensions | 178mm × 432mm × 400mm (3U Chassis) |
Main Features and Advantages
The WESTINGHOUSE 5X00300G02 delivered deterministic graphics performance with <250ms display refresh rates – critical during plant transients. Its dual-redundant design maintained continuous operator visibility during module failures, with automatic database synchronization between primary and standby units. The module’s distributed processing architecture offloaded trending and alarm management from control processors, freeing 30%+ CPU resources for safety-critical loops.
Advanced security: Role-based access control enforced operator permissions at hardware level, preventing unauthorized commands. Nuclear-qualified variants implemented rad-hard FPGAs and error-correcting memory to withstand cumulative radiation doses. The 5X00300G02 supported virtual “soft” stations for remote monitoring – a pioneering feature in pre-Internet era DCS. Its integrated diagnostics tracked memory leaks, fan failures, and thermal overloads, triggering preemptive maintenance alerts.
Application Field
The WESTINGHOUSE 5X00300G02 was deployed in over 300 power plants worldwide:
Fossil Fuel Plants: Centralized boiler/turbine monitoring for 800MW coal units, displaying combustion optimization parameters and emission controls
Nuclear Facilities: Secondary control room displays for feedwater chemistry, turbine island equipment, and radiation monitoring (using 5X00300G02-N)
Combined-Cycle Plants: Coordinating gas/steam turbine synchronizing panels and HRSG performance dashboards
Industrial Complexes: Pulp/paper mill batch digesters control, refinery fractionator column graphics, and compressor station overviews
The module proved essential during black-start scenarios, where rapid system visualization guided restoration sequences.

5X00300G02 WESTINGHOUSE
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5X00400G01: Historian Gateway for Data Archiving
Ovation MMI Station: Emerson’s Modern Operator Interface
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5X00350G01: Alarm Management Server






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