7

66(96)

Control Keypad

Honeywell

 

17

Motor

 

Motor underload protection has tripped.

FAN: check that Belt is not broken

underload/

 

 

PUMP: check that Pump is not dry

Pump Dry

 

 

 

 

detection/

 

 

 

 

Broken belt

 

 

 

 

Detection

 

 

 

 

 

 

 

 

 

22

24

25

EEPROM checksum fault

Counter fault

Microprocessor watchdog fault

Parameter save fault

Contact the distributor near to you

faulty operation

component failure

Values displayed on counters are incorrect

faulty operation

Reset the fault and restart.

component failure

Should the fault re-occur, contact

 

 

the distributor near to you.

 

 

 

29

Thermistor fault

The thermistor input of option board has

Check motor cooling and loading

 

 

detected increase of the motor temperature

Check thermistor connection

 

 

 

(If thermistor input of the option

 

 

 

board is not in use it has to be short

 

 

 

circuited)

34

Internal bus

Ambient interference or defective hardware

Reset the fault and restart

 

communication

 

Should the fault re-occur, contact

 

 

 

the distributor near to you.

 

 

 

 

35

Application fault

Selected application does not function.

Contact the distributor near to you.

 

 

 

 

39

Device removed

Option board removed.

Reset

 

 

Drive removed.

 

40

Device unknown

Unknown option board or drive.

Contact the distributor near to you.

 

 

 

 

41

IGBT temperature

IGBT Inverter Bridge overtemperature protection has detected too high a motor current.

Check loading. Check motor size.

 

 

44

Device change

Option board changed.

Reset

 

 

 

 

 

 

Option board has default settings.

 

 

 

 

 

45

Device added

Option board added.

Reset

 

 

 

 

50

Analogue input

Current at the analogue input is < 4mA.

Check the current loop circuitry.

 

 

 

 

 

Iin<4mA

control cable is broken or loose

 

 

 

 

 

 

(selected signal

signal source has failed

 

 

 

 

 

 

range 4 to 20

 

 

 

 

 

 

 

mA)

 

 

 

 

 

 

51

External fault

Digital input fault. Digital input has been

Check the programming and the

 

 

 

 

 

 

programmed as external fault input and this

device indicated by the external

 

 

 

 

 

 

input is active.

fault information. Check also the

 

 

 

 

 

 

 

cabling of this device.

 

 

 

 

52

Keypad

The connection between the control keypad

Check keypad connection and

 

 

 

 

 

communication

and the frequency converter is broken.

possible keypad cable.

 

 

 

 

 

fault

 

 

 

 

Page 66
Image 66
Honeywell NXL user manual Control Keypad

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.