7

￿ ￿        

Control Keypad

67(96)

53

54

55

Fieldbus fault

Slot fault

Actual value supervision

The data connection between the fieldbus

Check installation.

Master and the fieldbus board is broken

If installation is correct contact the

 

 

nearest Honeywell distributor

 

 

 

Defective option board or slot

Check board and slot.

 

 

Contact the nearest Honeywell

 

 

distributor

 

 

 

Actual value has exceeded or fallen below

 

(depending on par. 2.7.22) the actual value

 

supervision limit (par. 2.7.23)

 

 

 

 

Table 7-4. Fault codes

 

READY

 

READY

 

READY

STOP

I/O term

STOP

I/O term

STOP

I/O term

 

 

 

 

nxlk20. fh8

 

 

 

Push Enter to reset!

 

 

7.4.6Fault history menu (H5)

The Fault history menu can be entered from the Main menu by pushing the Menu button right when the location indication H5 is visible on the keypad display.

All faults are stored in the Fault history menu in which you can browse through them using the Browser buttons. You can return to the previous menu anytime by pushing the Menu button left.

The memory of the frequency converter can store a maximum of 5 faults in the order of appearance. The latest fault carries the indication H5.1, the second latest H5.2 etc. If there are 5 uncleared faults in the memory the next occurring fault will erase the oldest from the memory.

Pressing the Enter button for about 2 to 3 seconds resets the whole fault history.

Figure 7-9. Fault history menu

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Image 67
Honeywell NXL user manual Control Keypad 6796, Fault history menu H5

NXL specifications

Honeywell NXL is an advanced building management system designed to optimize the efficiency of HVAC, lighting, and security systems within commercial buildings. It incorporates cutting-edge technologies to enhance operational performance, improve energy savings, and provide a comfortable environment for occupants.

One of the standout features of Honeywell NXL is its integration capabilities. The system allows seamless connections between various subsystems, facilitating a unified approach to building management. This interoperability means that data from different systems can be aggregated, analyzed, and applied to enhance overall building performance.

The Honeywell NXL employs a user-friendly interface that empowers facility managers to easily navigate through critical information. The intuitive dashboard offers real-time analytics and visualizations, providing insights into energy consumption, system performance, and occupant comfort. Users can quickly identify inefficiencies and make informed decisions to improve operational effectiveness.

In terms of technologies, Honeywell NXL utilizes IoT connectivity, which enables devices and systems within the building to communicate with one another. This connectivity allows for remote monitoring and control, which is essential for effective facility management. By leveraging IoT technology, facility managers can receive alerts, conduct diagnostics, and perform maintenance proactively, reducing equipment downtime and avoiding costly repairs.

Another significant characteristic of the Honeywell NXL is its robust data analysis capabilities. The system collects vast amounts of data from sensors and connected devices, which is then processed to identify patterns and trends. This analytical approach not only aids in energy management but also enhances occupant comfort by adjusting parameters in real-time based on occupancy and environmental conditions.

Energy management is a critical issue for modern buildings, and Honeywell NXL addresses this with advanced optimization strategies. The system can implement demand response capabilities, adjusting energy usage based on peak periods or grid demands, ultimately saving costs and reducing environmental impact.

Moreover, Honeywell NXL places a strong emphasis on security features. Its design includes integrated surveillance and access control systems, ensuring the safety of occupants while facilitating efficient access management.

In summary, Honeywell NXL is a comprehensive building management solution that combines user-friendly design, IoT connectivity, advanced data analytics, energy optimization, and enhanced security features. Its ability to integrate various building systems makes it an essential tool for contemporary facility management, promoting efficiency and sustainability in building operations.