EGPWS LINE MAINTENANCE MANUAL

3.8.41 WEIGHT ON WHEELS DISCRETE

Weight On Wheels Discrete may be used by EGPWS to determine if the aircraft is on the ground.

Type:

Weight On Wheels Status

 

 

 

 

Signal Status:

On Ground or Not On Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 6 Audio readout

Weight On Wheels Discrete

 

 

Selected =>

“On Ground”

 

Not Selected =>

“Not On Ground”

 

 

 

3.8.42 GPWS INHIBIT DISCRETE

This discrete inhibits all audio and visual except for Windshear, Terrain Awareness and TCF.

Type:

Analog discrete input from a flight deck mounted switch

Signal Status:

GPWS enabled or disabled

Fault monitoring: Activation of this input for more than 5 seconds will result in the ‘GPWS Inhibit’ fault which will cause a GPW INOP indication.

 

 

 

Level 6 Audio readout

GPWS Inhibit Discrete

 

GPWS Inhibit =>

“GPWS Inhibit”

 

Not Inhibit =>

“GPWS Not Inhibit”

 

 

3.8.43 RAAS ENABLE DISCRETE (MK V AND MK VII ONLY)

Type:

Discrete for enabling RAAS functionality

 

Signal Status:

RAAS Enabled or Disabled

 

 

 

 

 

 

 

 

 

 

 

Level 6 Audio readout

RAAS Enable Discrete

 

True =>

“Runway Awareness Enabled”

 

False =>

“Runway Awareness Disabled”

 

 

 

3.8.44 RAAS INHIBIT DISCRETE (MK V AND MK VII ONLY)

Type:

Discrete for inhibiting RAAS functionality, also inhibits Long Landing Monitor and Takeoff Flap

 

Configuration Monitor

 

 

 

 

Signal Status:

RAAS Inhibit or Not Inhibit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 6 Audio readout

 

RAAS Inhibit Discrete

 

True =>

“Runway Awareness Inhibit”

 

 

False =>

“Runway Awareness Not Inhibit”

 

 

 

 

 

CAGE CODE: 97896

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

REV: G

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Honeywell MK VIII, MK XXII Weight on Wheels Discrete, Gpws Inhibit Discrete, Raas Enable Discrete MK V and MK VII only

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.