Sungrow PC-4 User manual

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

1
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
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.

6
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: