Airtek Nft28u User manual

13826M_e- NFT28U.doc

21/12/01

Field Control Layer Device

Group Control Touch Panel

【Description】

The NFT28U group control LCD touch panel is a dedicated field operation man-machine

interface for DF series fan coil controllers. It has a two-wire RS485 network communication

capability and can be connected with up to 32 fan controllers to form a community network.

Through the NFT28U operating interface, users can perform control functions such as start-stop

operation, schedule start-stop operation, temperature adjustment, wind speed switching, and

timer shutdown of the fan controller in groups, partitions or individually, as well as real-time

monitoring of the operation status of each fan. View and check function, with a touch-sensitive

LCD backlit screen, and can operate the touch screen to start, stop, change the temperature and

humidity settings, etc.), and also has 8 dedicated touch function keys, which can be quickly set.

Adopting 32-bit microprocessor to manufacture super powerful functions and superior

performance, the transmission distance can reach 1,200 meters.

The NFT28U-Q is a version that incorporates the air quality sensor function. Users can

obtain the air quality value in the environment through the NFT28U-Q without having to install an

additional air quality sensor. In addition, users can upload media screens through NFTeditor, plan

various corporate images or energy-saving promotional screens, and display them when there is

no operation to enhance the added value of the product.

【Features】

It adopts MODBUS communication, which can be connected to the FCnet or SCnet layer communication of AIRTEK DFC series products as the

man-machine interface of the controller.

The 2.8” TFT LCD touch screen can display various information content, with simplified/traditional/English operation display, and menu settings

can be switched directly.

The control screen is divided into the main control screen and the advanced setting screen. The general setting can be controlled by the touch pad

on the panel to control the comfortable conditions.

With advanced settings, there are functions such as mode, sleep comfort, energy saving, scheduled power on/off, timer power off, system settings,

password, channel selection, group, and common modes.

The fan selection function can display the currently connected fans and their power on/off status at one time, so that the user does not need to

select one by one to confirm whether it is currently on/off.

In addition to the overall control, the group control function can also set the partition group. When using it, you can perform related group settings

(such as temperature, wind speed) for a specific area.

The common mode function can save the common settings of each fan in the network, so that the administrator can return all the fans in the

network to the common settings with one key operation when necessary.

You can update the firmware and upload image data through the Mini USB interface.

With the function of uploading media screens, plan all kinds of corporate images or energy-saving promotion screens, with a maximum of 18

images. You can choose to play or not to play.

With language, lock, temperature unit, background setting, buzzer, media playback, brightness, clock mode, clock setting adjustment and other

parameter setting functions.

The clock mode setting can accept the network time correction of the central monitoring, and you can also choose the clock to write out, and the

panel will display the time, and the connected controller will be synchronized.

NFT28U-Q contains temperature, humidity, and carbon dioxide sensing functions, which can sense indoor air quality and return its values to the

central monitoring network.

【Specification】

Model

Temperature

Humidity

CO2

IAQ Display

NFT28U

NFT28U-Q

○

Power Supply

5VDC, 3VA (5VDC power supply provided by V+ and V- on SCnet port of AIRTEK DFC.. controller can be used).

Display

2.8” TFT LCD touch screen, full-color 65,536 colors, resolution 320*240 modules.

Microprocessor

32-bit high-speed arithmetic microprocessor (MCU), containing 64K SRAM and 384K Flash memory space.

8M memory space for control screen and customized screen data storage.

SCnet interface

RS-485 communication interface, the maximum transmission distance is 1,200 meters.

USB interface

Mini USB transmission interface for firmware update and graphic control data download.

Function keys

8 function keys. for fan start and stop keys. , for temperature adjustment key, fan speed setting

Set key for group control. , for channel selection button, and

switch for air-conditioning mode.

Buzzer

One buzzer

Environment

0～50℃, 20～90%RH non-condensing.

Temperature

Temperature/humidity chip, range 0~50°C, accuracy is ±0.4°C (measured at 25°C).

Humidity

Temperature/humidity chip, range is 0~100%RH (non-condensing), accuracy ±3%RH (at 10~90%RH)

CO2

NDIR non-dispersive infrared sensor, range, 0~10,000ppm, accuracy ±40ppm ±3%

Certificate

CE, RoHS

Accessories

HMI-LINKER

13-826-M

NFT28U

【Application】

Room-1

DFC

Room-2

DFC

Zone-1

DFC DFC

Zone-2

DFC DFC

NFT28U

NFT28U-Q

FCnet

SCnet

Up to 32 DFC

Set

Auto

Set

Auto

Timer

Fan Mode

MFC32V

Set

Auto

Set

Auto

Timer

Fan Mode

MFC32V

Set

Auto

Fan Mode

Single

Timer

Group

NFC32V

120Ω終端電阻

【Installation】

Please read the catalog carefully before installation. Failure to follow the instructions in the catalog may cause danger or cause unpredictable results such as

product damage.

Do not connect the panel to the power supply during installation, because of the danger of electric shock or equipment damage, which may cause personal injury

or damage the electrical circuit.

Please install the control panel on the wall about 1.2 meters above the ground and in a location with good ventilation and circulation. Do not install it in a location

that is directly exposed to heat, damp, dusty or vibrating, so as not to affect the control effect or product life.

The transmission distance between the main communication network FCnet and the sub-communication network SCnet is less than 300 meters. It is

recommended to use AWG22~24#2C paired copper mesh to isolate and shield the cable. For more than 300 meters, it is recommended to use AWG18~20#2C

paired copper mesh the

er meter.

The RS485 communication network must adopt a daisy chain connection mode of one input and one output, and it cannot be divergent or star-shaped, and keep

the positive and negative polarity of the potential consistent.

The front and back ends of the RS485 communication network should be equipped with 120Ω terminal resistors to effectively improve the stability of

communication quality. The total length of the network should not exceed 1,200 meters.

When the group control panel is within 20 meters from the DF.. controller, you can use AWG22~24#4C twisted copper mesh isolation shielded cable to connect

(two of the cores are used for connecting to the power supply), and the DF.. controller can be used nearby. 5VDC power supply (terminals V+&V-) on the power

supply; if the distance exceeds 20 meters, a 5VDC power supply must be configured independently. Remember! Do not share the power supply with other

equipment, so as to avoid the short circuit burnout caused by the difference in circuit design.

FCnet and SCnet communication networks should be covered with EMT metal conduits, and should not be co-managed with power lines or power lines to avoid

noise interference.

To download the graphic control screen, set the parameters or update the firmware version of the panel, you need to use the computer to run the NFTeditor

software to operate. Notice! Please unplug the external 5VDC power supply before connecting to the computer, and then connect it to the computer with a

Mini USB transmission cable, and use the computer's USB port to directly supply 5VDC, so that the computer and panel information can be transmitted smoothly.

Wall

22AWG

Twisted pair

shield cable

MODBUS

Mini

USB

12VDC

M+ M- V+ V-

BL Y R G

Fig 1Installation

Fig 2 Dismount