EGPWS LINE MAINTENANCE MANUAL

TABLE 3-4: LEVEL 2 SELF-TEST - EXTERNAL FAULTS

THE FOLLOWING EXTERNAL FAULTS ARE AVAILABLE IN LEVEL 2 SELF-TEST:

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“<BUS> Inactive”

GPS BUS 1 Inactive

Input source not powered or a wiring problem exists between source LRU and the

EGPWC.

Verify input source LRU is powered. Verify wiring from the source LRU. Verify program pin configuration.

“<BUS><SIGNAL> FAULT”

ILS BUS 1 GLIDESLOPE FAULT

Input signal SSM = Fail Warning, or Input signal is not being transmitted (incorrect update rate).

Repair input signal.

“<SIGNAL> FAULT ESE” (See Table 3-5 for other failure codes)

External signal is outside reasonable limits

Verify signal scaling

“<BUS> WIRING FAULT”

RADIO ALTIMETER 1 WIRING FAULT

Open wire monitor has detected no connection from the source LRU. Verify wiring from the source LRU.

“FLAP SWITCH FAULT”

Electrical short at the flap discrete input.

Verify wiring from the flap override switch and/or flap input discretes.

“GEAR SWITCH FAULT”

Electrical short at the gear discrete input.

Verify wiring from the gear override switch and/or gear input discrete.

“AUDIO CANCEL INVALID”

Electrical short at the audio cancel input.

Verify wiring from the audio cancel switch.

“ALL MODES INHIBIT INVALID”

Electrical short at the audio cancel input.

Verify wiring from the audio cancel input.

“GLIDESLOPE CANCEL INVALID”

Electrical short at the glideslope cancel input.

Verify wiring from the glideslope cancel input.

“ILS SELECT INVALID”

Electrical short at the ILS Select inputs.

Verify wiring from the ILS Select switches.

“FLAP ANGLE UNREASONABLE”

Electrical short at the flap discrete input(s).

Verify wiring from the flap-input discrete(s).

CAGE CODE: 97896

SCALE: NONE SIZE: A DWG NO.: 060-4199-180

REV: G

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Honeywell MK VIII Bussignal Fault, BUS Wiring Fault, Flap Switch Fault, Gear Switch Fault, Audio Cancel Invalid

MK VIII, MK V, MK XXII, MK VII, MK VI specifications

Honeywell's range of control systems, particularly the MK VI, MK VIII, MK VII, V, and XXII, are pivotal innovations that have revolutionized process automation and control in various industries, especially in power generation and oil and gas sectors. Each of these systems comes with unique features and technologies to enhance operational efficiency, safety, and reliability.

The Honeywell MK VI control system is renowned for its ability to provide effective plant control and management tools, featuring advanced operator interfaces and robust hardware components. It employs a modular design, which allows for easy scalability and integration into existing infrastructure. The MK VI is equipped with Ethernet-based communication protocols, ensuring high-speed data transfer and enabling seamless connectivity with other systems.

The MK VIII system takes automation a step further, emphasizing enhanced performance and reliability. With its built-in redundancy and advanced diagnostics, the MK VIII minimizes downtime and optimizes maintenance efforts. Its powerful software tools are designed to improve operator decision-making, providing critical insights into plant operations and trends.

Honeywell’s MK VII control system is designed for high-performance applications, especially in gas turbine environments. It features advanced control algorithms, enabling precise control of emissions and improving overall efficiency. The MK VII stands out with its ability to maintain optimal performance under varying load conditions, ensuring reliability in challenging operational scenarios.

The MK V system is one of Honeywell's legacy products, known for its simple and user-friendly interface. Despite its age, it continues to be a dependable choice for many plants. It offers solid performance with basic control functions and has been a reliable backbone for older facilities transitioning into newer technologies.

Lastly, the MK XXII brings a modern twist to control systems with its focus on cybersecurity and data analytics. This system takes advantage of big data and IoT technologies, providing enhanced visibility of operations through real-time monitoring and predictive maintenance capabilities. The MK XXII ensures that plants not only operate efficiently but also mitigate risks associated with cyber threats.

Overall, Honeywell's series of control systems showcases their commitment to innovation and reliability in process automation, catering to the diverse needs of contemporary industrial environments. Each system is designed with specific features and capabilities that address the evolving challenges of process control, ensuring that users can achieve optimal performance and safety in their operations.