elsner elektronik P03/3 User manual

P03/3-RS485 basic Weather Station 1
P03/3-RS485 basic Weather Station • Version: 07.06.2021 • Technical changes and errors excepted. • Elsner Elektronik GmbH • Sohlengrund 16 • 75395 Ostelsheim • Germany • www.elsner-elektronik.de • Technical Service: +49 (0) 7033 / 30945-250
P03/3-RS485 basic
Weather Station
Technical specifications and installation instructions
1. Description
The P03/3-RS485 basic Weather Station measures temperature, wind speed,
brightness (eastern, southern and western sun) and it recognizes precipitation.
The weather station sends the currently recorded weather data once every second.
This data flow can be received and analyzed by an end device such as SPS, PC or
MC.
Functions:
•Brightness measurement with three separate sensors for east, south and
west. Recognition of twilight/dawn
•Wind speed measurement: by means of a nonwearing electronic sensor.
No damage from storm or hail as with mechanical anemometers
• Temperature measurement
• Heated precipitation sensor (1.2 watts): No false reports as a result of fog
or dew. Dries quickly after precipitation has stopped
• Sending cycle for data 1 second
1.0.1. Scope of delivery
• Weather station
1.1. Technical specifications
The product conforms with the provisions of EU directives.
2. Installation and commissioning
Installation, testing, operational start-up and troubleshooting should
only be performed by an authorised electrician.
CAUTION!
Live voltage!
There are unprotected live components inside the device.
• Inspect the device for damage before installation. Only put undamaged
devices into operation.
• Comply with the locally applicable directives, regulations and provisions
for electrical installation.
• Immediately take the device or system out of service and secure it against
unintentional switch-on if risk-free operation is no longer guaranteed.
Use the device exclusively for building automation and observe the operating ins-
tructions. Improper use, modifications to the device or failure to observe the ope-
rating instructions will invalidate any warranty or guarantee claims.
Operate the device only as a fixed-site installation, i.e. only in assembled condition
and after conclusion of all installation and operational start-up tasks, and only in
the surroundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may
occur after publication of these operating instructions.
2.1. Installation position
Choose an installation position in the building where wind, rain and sun can be
measured unhindered by the sensors. The weather station must not be installed
underneath any structural parts from which water can still drip onto the rain sensor
after it has stopped raining or snowing. The weather station must not be shaded
by anything, such as building structures or trees.
At least 60 cm of clearance must be left all round the weather station. This facilita-
tes correct wind speed measurement without eddies. The distance concurrently
prevents spray (raindrops hitting the device) or snow (snow penetration) from im-
pairing the measurement. It also does not allow birds to bite it.
Please take note that an extended awning does not shade the device from sun and
wind.
Temperature measurements can also be affected by external influences such as by
warming or cooling of the building structure on which the sensor is mounted, (sun-
light, heating or cold water pipes).
2.2. Mounting the sensor
2.2.1. Attaching the mount
The sensor comes with a combination wall/pole mount. The mount comes adhered
by adhesive strips to the rear side of the housing. Fasten the mount vertically onto
the wall or pole.
2.2.2. View of rear side and drill hole plan
2.2.3. Connection
The weather station cover with the rain sensor snaps in on the left and right along
the bottom edge (see figure). Remove the weather station cover. Proceed carefully,
so as not to pull off the wire connecting the PCB in the bottom part with the rain
sensor in the cover (wire with push-connector).
Connect the Modbus data line to terminals A and B. Connect the power supply (24
V DC) to terminals 1 and 2. Ensure correct connection!
Push the connecting cable through the rubber seal on the bottom of the weather
station and connect the power and bus cables to the terminals provided for this
purpose.
The connection is by typical telephone cable (J-Y(ST)Y 2 × 2 × 0.8).
Housing Plastic material
Colour White / translucent
Mounting On-wall
Degree of protection IP 44
Dimensions approx. 96 × 77 × 118 (W × H × D, mm)
Weight approx. 160 g
Ambient temperature Operation -30…+50°C, Storage -30…+70°C
Operating voltage 24 V DC ±10%.
A suitable power pack can be purchased from Elsner
Elektronik.
Current max. 120 mA, residual ripple 10%
Data output RS485
Heating rain sensor approx. 1.2 W
Measurement range
temperature
-40…+80°C
Resolution (temperature) 0.1°C
Accuracy (temperature) ±1.5°C at -25…+80°C
Measurement range wind 0…35 m/s
Resolution (wind) 0,1 m/s
Accuracy (wind) at ambient temperature -20…+50°C:
±22% of the measurement value when incident flow
is from 45…315°
±15% of the measurement value when incident flow
is from 90…270°
(Frontal incident flow corresponds to 180°)
Measurement range
brightness
0 … 99,000 lux
Resolution (brightness) 1 lux up to 300 lux
2 lux up to 1,000 lux
20 lux up to 99,000 lux
Accuracy (brightness) ±15% at 30 lux … 30,000 lux
Item number 30140
Fig. 1
There must be at least 60 cm of space
below, to the sides and in front of the
weather station left from other ele-
ments (structures, construction parts,
etc.).
60 cm
Fig. 2
The weather station must be mounted
on a vertical wall (or a pole).
Wall
or
pole
Fig. 3
The weather station must be mounted
in the horizontal transverse direction
(horizontally).
Horizontal
Fig. 4
For installation in the northern hemis-
phere, the weather station must be
aligned to face south.
For installation in the southern hemis-
phere, the weather station must be
aligned to face north.
North
South
Fig. 5
When wall mounting: flat side on wall,
crescent-shaped collar upward.
Collar
Fig. 6
When pole mounting: curved side on po-
le, collar downward.
Collar
Fig. 7
Different mounting arms are available
from Elsner Elektronik as additional, op-
tional accessories for flexible installation
of the weather station on a wall, pole or
beam (pictures of sensors exemplary).
Example of the use of a mounting arm:
Due to flexible ball joints, the sensor can
be brought into ideal position.
Fig. 8
Example use of the hinge arm mounting:
With the hinge arm mounting, the weat-
her station projects from beneath the
roof overhang. Sun, wind and precipita-
tion can act upon the sensors without
hindrance.
Fig. 9
Example use of the hinge arm mounting:
Fitting to a pole with worm drive hose
clips
Langloch 7,5 x 5 mm
Fig. 10 a+b
Drill hole plan
Dimensions of rear side of housing with bra-
cket. Subject to change for technical enhan-
cement.
Fig. 11
1) Cover Snaps
2 Bottom part of housing
1
2
Unsnap cover and
remove upwards
EN

P03/3-RS485 basic Weather Station 2
P03/3-RS485 basic Weather Station • Version: 07.06.2021 • Technical changes and errors excepted. • Elsner Elektronik GmbH • Sohlengrund 16 • 75395 Ostelsheim • Germany • www.elsner-elektronik.de • Technical Service: +49 (0) 7033 / 30945-250
The connection cable must be plugged in between the cover and circuit board.
2.2.4. PCB Layout
2.2.5. Mounting the sensor
Close the housing by putting the cover back over the bottom part. The cover must
snap in on the left and right with a definite “click”.
To remove it, the sensor can be simply pulled upwards out of the mount, against
the resistance of the fastening.
2.3. Notes on mounting and commissioning
Do not open weather station if water (rain) might ingress: even some drops might
damage the electronic system.
Observe the correct connections. Incorrect connections may destroy the weather
station or connected electronic devices.
Please take care not to damage the temperature sensor (small blank at the bottom
part of the housing.) when mounting the weather station. Please also take care not
to break away or bend the cable connection between the blank and the rain sensor
when connecting the weather station.
Remove all existing protection labels after installation.
The correct wind value may only be supplied about 30 seconds after the supply
voltage has been connected.
2.4. Maintenance of the weather station
WARNING!
Risk of injury caused by components moved automatically!
The automatic control can start system components and place people
in danger.
• Always isolate the device from the mains for servicing and
cleaning.
The device must regularly be checked for dirt twice a year and cleaned if necessary.
In case of severe dirt, the sensor may not work properly anymore.
ATTENTION
The device can be damaged if water penetrates the housing.
• Do not clean with high pressure cleaners or steam jets.
3. Transfer protocol
All characters and/or digits are based on the ASCII standard, i.e. every reading pro-
cessed internally as an integer or float value will always be broken down into and
transferred in its individual ASCII format characters. They must then be reassem-
bled in the reverse process by the receiver.
Transfer rate: 19200 Baud
Data bits: 8
Stop bit: 1
Parity: none
The checksum is calculated along by the receiver by adding all received bytes up
until byte 35 and then compared with the checksum transferred from the P03.
Units:
Temperatures in degrees Celsius
Sun intensity in kilolux
Daylight in Lux
Wind in metres per second
4. Disposal
After use, the device must be disposed of or recycled in accordance with the legal
regulations. Do not dispose of it with the household waste!
Fig. 12: Overview PCB
1 Connecting cables to rain sensor
in housing cover
2 Socket for connecting plug,
suitable for massive conductors
of up to 0.8 mm²
1: +24 V DC | 2: GND
A: data | B: data
1
2
Fig. 13
Make sure the cover and bottom part
are properly snapped together! This
picture is looking at the closed sensor
from underneath.
Fastening
Fig. 14
Push the housing from above into the
fastened mount. The bumps on the
mount must snap into the rails in the
housing.
Fig. 15
After installation, remove the "distan-
ce" sticker on the top of the cover.
Byte
No
char Description
1 W Start of Weather Data
2 AT: sign Outdoor temperature sign - / +
3 AT: 1st digit Outdoor temperature 1st digit (tens) in °C
4 AT: 2nd digit Outdoor temperature 2nd digit (units)
5 AT: decimal point Outdoor temperature decimal point
6 AT: 3rd digit Outdoor temperature 3rd digit (tenths)
7 SoS: 1st digit Sun South 1st digit (tens) 1-99 klx
8 SoS: 2nd digit Sun South 2nd digit (units)
9 SoW: 1st digit Sun West 1st digit (tens)
10 SoW: 2nd digit Sun West 2nd digit (units)
11 SoO: 1st digit Sun East1st digit (tens)
12 SoO: 2nd digit Sun East 2nd digit (units)
13 Twilight Twilight: J = Yes; N = No < 10 lx
14 Daylight 0-999Lx Daylight 1st digit (hundreds) 0-999 lx
15 Daylight 0-999Lx Daylight 2nd digit (tens)
16 Daylight 0-999Lx Daylight 3rd digit (units)
17 Wind: 1st digit Wind 1st digit (tens) in m/s
18 Wind: 2nd digit Wind 2nd digit (units)
19 Wind: decimal
point
Wind decimal point
20 Wind: 3rd digit Wind 3rd digit (tenths)
21 Rain Rain: J = Yes; N = No
22 Week day: ? This function is not implemented
23 Date: ? This function is not implemented
24 Date: ? This function is not implemented
25 Date: ? This function is not implemented
26 Date: ? This function is not implemented
27 Date: ? This function is not implemented
28 Date: ? This function is not implemented
29 Time: ? This function is not implemented
30 Time: ? This function is not implemented
31 Time: ? This function is not implemented
32 Time: ? This function is not implemented
33 Time: ? This function is not implemented
34 Time: ? This function is not implemented
35 Summer time: ? This function is not implemented
36 Checksum: 1st digit Checksum 1st digit (thousands)
37 Checksum: 2nd
digit
Checksum 2nd digit (hundreds)
38 Checksum: 3rd digit Checksum 3rd digit (tens)
39 Checksum: 4th digit Checksum 4th digit (units)
40 End identifier end identifier 0x03