7

￿ ￿        

Control Keypad

79(96)

Status Word

15

14

-

-

 

 

13

-

12

-

11

-

10

-

9

-

8

-

7

F

6

Z

5

AREF

4

W

3

FLT

2 1 0

DIR RUN RDY

Information about the status of the device and messages is indicated in the Status word. The Status word is composed of 16 bits the meanings of which are described in the table below:

Actual speed

15

MSB

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

LSB

This is actual speed of the frequency converter. The scaling is –10000...10000. In the application, the value is scaled in percentage of the frequency area between set minimum and maximum frequency.

Control word

15

-

14

-

13

-

12

-

11

-

10

-

9

-

8

-

7

-

6

-

5

-

4

-

3

-

2 1 0

RST DIR RUN

In Honeywell applications, the three first bits of the control word are used to control the frequency converter. However, you can customise the content of the control word for your own applications because the control word is sent to the frequency converter as such.

Speed reference

15

14

13

12

11

10

9

8

7

6

5

MSB

 

 

 

 

 

 

 

 

 

 

4

3

2

1

0

LSB

This is the Reference 1 to the frequency converter. Used normally as Speed reference. The allowed scaling is –10000...10000. In the application, the value is scaled in percentage of the frequency area between the set minimum and maximum frequencies.

Bit definitions

 

Bit

 

 

Description

 

 

 

Value = 0

 

Value = 1

 

RUN

 

Stop

 

Run

 

DIR

 

Clockwise

 

Counter clockwise

 

RST

 

Rising edge of this bit will reset active fault

 

RDY

 

Drive not ready

 

Drive ready

 

FLT

 

No fault

 

Fault active

 

W

 

No warning

 

Warning active

 

AREF

 

Ramping

 

Speed reference reached

 

Z

-

 

Drive is running at zero speed

 

F

-

 

Flux Ready

 

 

 

 

 

 

Page 79
Image 79
Honeywell NXL user manual Control Keypad 7996, Bit Description

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.