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FA221C Wireless Wind Data Display
Mounting dimensions
Unit: mm
Wiring diagram
RS485 protocol
1. Baud rate: 9600 bit/s, 8 bit data, no parity check, one stop bit .
2.Data definition: auto-output a frame per 1s, total 7 bytes.
0xAA
0x04
0xXX
Caution:
RS485 interface is standard 9-pin DB9 connector. Foot 1 is A line of RS485, foot 2 is B line, the others are useless.
Operating and Debugging
1. Wirelesserror：
FA221C display wind data when FA221C and FA231W connected, if display"_ _ _", go to check the connection, ensure no obstruct objects.
2. Mode and parameter setting:
1) A is wind speed and scale: A00.0 is wind speed (see fig.1), A10.0 is wind scale (see fig.2).
2) b is Pre-alarm setting: For example, if display "b18.0", wind speed indicator is lit up, wind speed is 18m/s (see fig. 3). When wind speed
or wind scale reach the set value, product output pre-alarm signal, built-in buzzer start to alarm, frequency is 1HZ.
3) C is Alarm setting: For example, if display "c09.0", wind scale indicator is lit up, wind scale is 9 (see fig. 4). When wind speed or wind
scale reach the set value, product output alarm signal, built-in buzzer start to alarm, frequency is 2HZ.
4) d is wind speed range: For example, if display"d50.0", it means wind speed range is 0-50m/s (see fig.5)
If wind speed range is linearly proportional to wind speed 0-50m/s, please set d mode as „d50.0"
If wind speed range is linearly proportional to wind speed 0-30m/s, please set d mode as „d30.0"
5) Mode setting (Automatic return to normal mode and don't save changing data if no action within 10 seconds in SETTING mode.)
Mode A: Press the SET button for 3 seconds untill digit A flash.
Mode b: When character C or A is flashing, shore press ▼ or ▲ unitl digit b flash.
2| 4
0xXX
0x00
0x00
checksum
Installation
1.Ensure that the input voltage is correct.
2. Ensure mount face is flat.
3. Fix product to mount face by using four nos. M5 screws(not
provided), ensure mount face is flat and has enough mechanical
strength.
4. Remove screws from front cover, see terminal blocks.
5. Insert the cable through cable gland, correctly connect power
line, data line and control line and control line to terminals
according to the indication tags on wires (wiring diagram is provide
on the left).
6.Product start to operate when power on, display wind data when
wind speed sensor is operating.
7. To prevent short circuit, fix well the unused terminals.
Wiring connection:
it is recommended to use RVVP/4 core/0.5mm²/copper core/high
and low temperature resistant shielding cable
Caution
1. Ensure cable connection is correct before power on
2. Cable shield layer and housing must be well grouded.
3. Manage and fix wind speed sensor cables well.
4. Indoor application, work with UART signal wind speed sensor only.
3. Byte definition: 0xAA is synchronoushead, 0x04 is message
length, next 0xXX bytes combine a word which indicate wind
speed, the next two bytes are useless, checksum =
0xXX+0xXX+0x00+0x00, indicate checksum.
4. For example: 0xAA 0x040x01 0x6A 0x000x6B
Wind speed is 0x016A = 36.2m/s(data is binary number, convert
to decimal number indicate wind speed)
Checksum is 0x6B=0x01+0x6A+0x00+0x00
datasheet-FA221C-1704-en.1.1
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