Sungrow PC-4 User manual

PC-4-V11-UEN-Ver10-201803
PC-4
Environment Monitoring Device
User Manual

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Contents
1System Introduction...............................................................1
2Main Technical Parameters...................................................2
2.1 Digital Wind Speed Sensor........................................................2
2.2 Digital Wind Direction Sensor....................................................2
2.3 Solar Radiation Sensor .............................................................2
2.4 Module Temperature Sensor (surface mounted).......................3
2.5 Main Control Box.......................................................................3
2.6 Mechanical Parameters of the Entire Device ............................3
2.7 Ambient Temperature & Humidity Sensors................................3
2.8 Air Pressure Sensor ..................................................................3
3Mechanical Installation..........................................................4
3.1 Precautions on Installation ........................................................4
3.2 Mechanical Installation..............................................................4
4Electrical Connection.............................................................9
4.1 Power Supply Wiring...............................................................10
4.2 Communication Wiring............................................................10
5About Us..............................................................................12

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1 System Introduction
The PC-4 environment monitoring device for PV plant is a portable,
user-friendly, and highly precise mobile system that can monitor multiple
meteorological elements. The device can collect information, such as
temperature, humidity, wind direction, wind speed, solar radiation, and air
pressure, display the information and perform tendency analysis.
The structure of the PC-4 environment monitoring device for PV plant is shown
in the following figure.
A
B
C
D
E
Item
Name
A
Digital wind direction sensor
B
Digital wind speed sensor
C*
Radiation shield (temperature & humidity sensors and an air
pressure sensor have been installed inside)
D
Solar radiation sensor
E
Main control box
Note 1: If you purchase the temperature & humidity sensors and the air
pressure sensor, Sungrow will install the sensors inside the radiation shield
before delivery.
Note 2: According to the on-site configuration, the wind speed sensor and the
wind direction sensor can be divided into separated one and integrated one.
The separated sensors are taken as an example for brief description below.
Note 3: In this document, the description is given by using two solar radiation
sensors. However, you may install either one according to on-site requirement.

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2 Main Technical Parameters
2.1 Digital Wind Speed Sensor
Threshold velocity
≤0.5 m/s
Sensor range
0-70 m/s
Resolution
0.1m/s
Accuracy
±(0.3+0.03V)m/s
2.2 Digital Wind Direction Sensor
Threshold velocity
≤0.5 m/s
Sensor range
0-360°
Resolution
3°
Accuracy
±3°
2.3 Solar Radiation Sensor
Sensitivity
9.577uv/wm-2
Accuracy
≤5%
Response
time
≤30s
Spectral
Range
280～3000nm
Internal
resistance
184.5Ω
Temp.
coefficient
±2% (-20°C～+40°C)
Annual
stability
±2%
Sensor range
0～2000 W/m2
Resolution
1 W/m2
——
——

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2.4 Module Temperature Sensor (surface mounted)
Sensor range
-40~80℃
Resolution
0.1℃
Accuracy
±0.1℃
2.5 Main Control Box
Operation vol.
DC12V/AC220V
Communication manner
RS485
2.6 Mechanical Parameters of the Entire Device
Item
Parameter
Width
1-1.2m
Height
1.8-2.5m
Weight
15KG
2.7 Ambient Temperature & Humidity Sensors
Temperature sensor
Sensor range
-50~+80℃
Resolution
0.1℃
Accuracy
±0.1℃
Humidity sensor
Sensor range
0~100%RH
Resolution
0.1%RH
Accuracy
±2% RH (≤80%h), ±5% RH (>80%h)
2.8 Air Pressure Sensor
Sensor range
550～1060Hpa
Resolution
0.1Hpa
Accuracy
±0.3Hpa

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3 Mechanical Installation
3.1 Precautions on Installation
Select a proper installation site and construct the foundation before
assembling the supports
The short-strut side should face south during installation
Only one person is required for assembling the supports. Prepare a wrench,
a screwdriver, and other tools in advance
PV modules should be installed facing south and not obstructed at the front,
to ensure better conversion efficiency
After installation, ensure that all screws are firmly in place
The wind speed/direction sensor, whether the separated one or the
integrated one, should be installed at the top of the upright strut and ensure
that the north arrow or north line faces north
3.2 Mechanical Installation
The system structure is shown in the following figure:

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Lightning
rod
Main
control
box
Support
Upright strut
Proceed as follows to install the environment monitoring device:
1. Insert the lighting rod (not in the scope of delivery) into the reserved
threaded hole on the top of the support, screw the lightning rod, and check
whether the wind speed sensor, the wind direction sensor, and the main
control box are mounted securely.
2. Install the 2 solar radiation sensors equipped for the monitoring device,
where the 2 sensors can be installed horizontally or inclinedly.
The inclined-installed solar radiation sensor is the solar radiation sensor 1
The horizontally installed solar radiation sensor is the solar radiation sensor
2
The solar radiation sensor 1
Ensure that the orientation and the angle of inclination of the inclined-mounted
solar radiation sensor are the same as those of the PV modules. In the
following figure, both angles of inclination are θ.

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Installation
manner
θ
PV module
Orientation and
angle of inclination
θ
The angle of inclination can be any value between 0°and 40°, and the angle is
determined according to that of the on-site PV module. The angle can be
adjusted by turning the solar radiation sensor.
The solar radiation sensor 2
When the solar radiation sensor is installed horizontally, a level instrument can
be used to ensure the levelness.
Remove the external protective cover of the sensor after ensuring that it is
installed firmly. The solar radiation sensor without the protective cover is shown
in the following figure.
It is normal that in the same radiation condition, the difference
between the value collected by the purchased standard radiation
meter and the value collected by the solar radiation sensor of the
environment monitoring device is between 20% to 30%.
Reason: The spectral range of the purchased standard radiation
meter is the solar visible light ranging from 400nm to 1050nm; but
the solar radiation sensor of the environment monitoring device is
the pyrradiometer whose spectral range is 280nm to 3000nm.
The two devices have different spectral ranges, and therefore the
read radiation values are different. The pyrradiometer can better
reflect the actual radiation value of the PV plant.
3. Install the digital wind speed sensor and the digital wind direction sensor:

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connect the two sensors by using screws and a cross arm support and
install them onto the top of the upright strut. Notice: the north arrows and
the north lines on the sensors should face north.
North line
4. Install the radiation shield: remove two nuts at the bottom of the radiation
shield and connect the radiation shield to the radiation shield rack which is
installed on the upright strut (The installation height is approx. 1.5 m.).
5. Install the module temperature sensor: attach the module temperature
sensor to the back surface of the PV module closely, so as to ensure that
the measured temperature is consistent with the actual temperature.
During installation, you can directly stick the sensor to the back surface of
the PV module. Use hot melt adhesive to seal the gap between the sensor
and the module to prevent air penetration, and then use long tape to
fasten the sensor onto the module to ensure firm installation. This is
shown in the following figure.

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6. Fix the bottom of the environment monitoring device onto the foundation
made by the user. Notice: the solar radiation sensor is fixed on the
outmost edge of the lower cross arm support.
When the entire device is installed on the roof of the high building, the
foundation of the device can be connected to the lightning strip on the
roof, so that the device is grounded via the grounding system of the
building. When the device is installed in the open field, the device can
be fixed on the cement column or metal base of more than 3m.
If the device is damaged by lightning due to the lack of on-site lightning
protection measures, Sungrow holds no liability for corresponding
consequence.
7. Lead a downlead from the foundation of the environment monitoring
device or the metal base, arrange the earthing network around the
foundation by using angle steels, and connect the grounding downlead to
the earthing network. For the specific process, refer to the lightning
protection standard for local rules and regulations.

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4 Electrical Connection
All external ports of the environment monitoring device are located at the
bottom of the main control box. Port types are shown in the figure below.
Temperature 1
Temperature 2
(reserved)
Temperature 3
(reserved)
Temp & humidity
Pressure
WS & WD
RS232/GPRS
communication
(reserved)
485
communication
AC220V
Pyrgeometer 2
Pyrgeometer 1
DC12V
Diffuse radiometer
(reserved)
Direct radiometer
(reserved)
DC12V
(reserved)
External DC power supply 12V
Solar radiation sensor 1
Solar radiation sensor 2
Module temperature sensor
Temperature & humidity sensors
Air pressure sensor
Digital wind speed sensor
Digital wind direction sensor
Logger
External power supply
Note: Two types of power supply ports are reserved on the main control box,
that is, the DC power supply port and the AC power supply port. On site, the
user can select either one to supply power.

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4.1 Power Supply Wiring
DC power supply: There are two DC power supply ports DC 12V at the
bottom of the main control box. Select either port to connect to external 12V
DC power supply.
AC power supply: Connect the AC power supply port AC 220V to the
external AC 220V power supply.
Note: Two types of power supply ports are reserved on the main control box,
that is, the DC power supply port and the AC power supply port. On site, the
user can select either one to supply power.
4.2 Communication Wiring
External port
Connected to
Cable specification
Pyrgeometer 1
Inclined-mounted solar
radiation sensor
RS485
Pyrgeometer 2
Horizontally mounted
solar radiation sensor
RS485
Temperature 1
Module temperature
sensor
RS485
Temp & humidity
Temperature &
humidity sensors
RS485
Pressure
Air pressure sensor
RS485
WS & WD
Digital wind speed
sensor
Digital wind direction
sensor
One RS485 cable is divided
into two at the top of the
upright strut. One is
connected to the digital wind
speed sensor while the other
is connected to the digital
wind direction sensor
485
communication
Logger
RS485

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Running information of the environment monitoring device can be viewed on
the PC by connecting the device to the PC via the logger. This is shown in the
following figure.
485
communication
Logger3000
PC
RS485
Environment monitoring device

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5 About Us
If you have any problems concerning our products, contact us in the following
manners:
Company: Sungrow Power Supply Co., Ltd.
Address: No.1699 Xiyou Rd., New & High Technology Industrial Development
Zone, Hefei, Anhui
Zip: 230088
Telephone: [phone]
Fax: [phone]
Website: www.sungrowpower.com
E-mail address: [e-mail] (sales)
[e-mail] (technical support)
[e-mail] (service)

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