Sensors help to record the deviations between the possible and the actual power production and provide important key figures in regard to the quality of the entire PV plant. An error message is generated when there is a deviation from the reference value and its current production.
The internal cell temperature sensor allows the temperature coefficient of the modules to be included when calculating the reference values. At larger plants, up to nine Sensor Boxes Pro- fessional and Professional Plus can be connected to a Solar-Log Base, 300, 1200, 1900 and 2000. It is possible to use the Sensor Boxes with other RS485 compo- nents on the same bus.
Additionally, the Sensor Box Professional Plus can be expanded with ambient temperature sensors and wind sensors.
|Technical data||Sensor Box Professional||Sensor Box Professional Plus|
|Solar cell, laminated inside glass||Mono crystalline silicon (5 cm x 3.3 cm)|
|Dimensions (w x h x d) in mm, weight||155 x 85 x 40; approx. 360 g|
|operating temperature||-35 °C to +80 °C||-35 °C to +80 °C|
|Power supply||Via RS485-data cable from Solar-Log™, no additional power supply required|
|Supply Current||Typical 80 mA||Typical 80 mA|
|Protocol||Solar-Log™, 9600 Baud, 8N1||Solar-Log™, 9600 Baud, 8N1|
|Measurement uncertainty||Radiation strength: 5 W/m2 ± 2.5 % of the measured value|
(0 W/m2 bis 1400 W/m2)
cell-temperature: ± 1K (-40 °C to +85 °C)
|Installation||Same orientation and pitch as the PV generator|
|Connection cable||4-pole, 3 m, weather and UV resistant (LiYC11Y(4 x 0.14) prolongable up to 50 m (0.14 mm2)|
|Conformity||CE in accordiance with DIN EN-61000-6-1:2007 and DIN EN-61000-6-3:2007|
|Ambient temperature sensor||-|
|Compatibility||Solar-Log Base, 300, 1200, 1900 and 2000||Solar-Log Base, 300, 1200, 1900 and 2000|
|Warranty||2 years||2 years|
The ambient temperature sensor (PT1000) provides additional information on power generation. One problem that could arise and contribute to decreased yields is that the combination of cold temperatures and sunshine causes a buildup of ice. Such problems are easily detected when a sensor is being used. In addition to this, wind speeds can be tracked with a wind sensor and identified much better as possible causes for breakdowns, power reductions or power losses.
The Weather Station with integrated CMP3 pyranometer provides information on air pressure, wind direction, wind strength, humidity and the local solar irradiation. The local measured values give information on how weather influences the PV plant’s output. This data is available in the Solar-Log WEB Enerest™ XL portal.
|Measurement||Measuring Range||Measuring Method|
|Pyranometer||1400 W/m2; spectral range|
(50 %): 300 – 2800 mm
|Kipp & Zonen CMP3|
|Ambient temperature||-50 °C – +60 °C||NTC|
|0 – 100 %, |
300 – 1200 hPa
|Capacitive, MEMS capacitive|
|Wind direction, |
|0 – 359,9 °, |
0 – 75 m/s
|Power supply||24 Vdc +/- 10 %|
|Power consumption||20 VA at 24 V|
|Connection, Protection class||RS485, IP66|
|Dimensions in mm||Diameter: 150, Height: 332, Weight: 1.5 kg|
|Compatible pyranometer types||WS 301 UMB, WS 501 UMB|
|Compatibility||Solar-Log Base, 300, 1200, 1900 and 2000|
|Article number||on request|