AEG PV.500-MH manual Description of Fan Control General, Fan Control, Cabinet Fan

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Protect PV.500_MH Operating Instructions

5.2Description of Fan Control

5.2.1General

The equipment features temperature-dependent fan control. The fans are either switched off, run on a fast or slow fan stage (cabi- net fan only) or are gradually speeded up or slowed down (stack fan only).

Fan control:

Extends the operating time of the fans

Minimises the noise generated by the fans

Improves the efficiency of the equipment by reducing its power consumption

5.2.2Fan Control, Cabinet Fan

As soon as the equipment's control module is supplied with volt- age, fan control always starts with the fast fan stage. The control can be restarted to check whether the fans are working correctly. For example, after maintenance work, it is not necessary to wait for the fans to reach the temperature criterion to switch on the fast fan stage.

The fast fan stage is always active for at least a certain time. The unit exhaust air temperatures are checked after this time. If the highest temperature from the two sensors is below a certain value, the fan control switches to the slow fan stage.

The unit exhaust air temperatures are also checked in the slow fan stage. If the highest temperature from the two sensors is below a certain value, the fans are switched off. If the highest temperature rises again during operation with the lower fan stage, fan control switches to the fast fan stage.

If, when the fans are switched off, the highest temperature from the two sensors rises above a certain value, fan control switches to the fast fan stage.

Initialisation

Unit exhaust

air temperature

> limit value

Fast fan stage,
minimum time!
Unit exhaust air	Unit exhaust air
temperature > limit	temperature < limit
value	value
Slow fan stage
	Unit exhaust air
	temperature < limit
	value
Fan switched off

Figure 7

Fan control

80000043212 BAL

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Contents Operating Instructions Protect PV.500-MHAEG Power Solutions GmbH Table of Contents System Function Monitoring Systems, Messages and FaultsInterfaces Graphical Display and Operation Unit Validity Information on How to Use these InstructionsWarranty General InformationHandling Target GroupsExplanations of Target Groups Obligations of the Equipment OperatorSkilled Personnel Skills and Training Obligations of skilled personnel Storing InstructionsExplanation of Symbols Explanation of Symbols and Safety InstructionsSymbol Meaning Symbol Meaning for skilled personnel Safety InstructionsSignal Words Used Hazard Symbols UsedSigns Containing Orders for Personal Protective Equipment Safety Awareness Emergency Procedure e.g. in the Event of a FireAbbreviations Thin-film cells Particular Dangers associated with Photovoltaic SystemsLightning protection Protective Covers Safety Signs and Warning Notices on the EquipmentSafety and Protection Devices for the Equipment System stop switchGuard Lockable Equipment DoorsResidual Hazards Electrical Hazards Risk of injury due to rotating fans Risks Due to Moving PartsFire-Related Risks Water in electrical equipmentRisks due to Loss of Control Risks from Maintenance and Repair WorkProduct Description Product DetailsImportant information about equipment documenta- tion Inappropriate Use Dimensions and ViewsSafety Appropriate UseNameplate Standards, Directives and CE MarkTechnology Operating Elements Individual Operation System DescriptionWaiting for Feed Conditions Status System FunctionDescription of Sequence Control OFF StatusWaiting Status Operation StatusEarly morning Fault StatusNight Status Sequence Control During the Course of the DayNight DayEvening Later in the eveningSequence Control Parameters Inverter stack switch-on timePermissible voltage dip after switching on the stack Power limit value for shutdown, delay time for shutdownFan Control, Cabinet Fan Description of Fan Control GeneralFan Control, Inverter Stack Fan Cabinet Fan Control ParametersInsulation Monitoring and Earthing of PV Cells General Igbt temperature limit value for switching off the fanIgbt temperature limit Parameters of Inverter Stack Fan ControlProtect PV.500-MH Operating Instructions Sequence control Maintenance modeOperation with Thin-Film Solar Cells GeneralMPP Tracker Delay for shutdown of K21 in night operationMinimum time in maintenance mode Insulation Monitoring ParametersMonitoring Systems, Messages and Faults Temperature monitoring systems Table of FaultsCan I/O monitoring systems Fault/Message Unit Monitoring Systems Fault/Message DC voltage monitoring systems Fault/Message Communication Interface InterfacesCommunication data port 3 Technical Data MultiCom CCC hardware data assembly A29.1Communication data port 1 Communication data port 2Button Configuration jumpersStructure of the MultiCom CCC Interface ConnectionsDescription of serial interfaces Shield connection of the RS485 bus line Port 2 X5 RS485 pin assignment defaultPort 3 X4 can pin assignment ConfigurationPort 2 X5 RS232 pin assignment Controller Area Network can atSetting the terminal program Configuration PreparationsProtect PV.500MH Operating Instructions Data protocol configuration Configuring the Modbus ProtocolModbus/JBus data transmission configuration Configuring Modbus Data TransmissionCOM Server General Structure of the COM Server internally wired to A93Network Connection Installation of the COM Server Configuration of the Virtual COM Port Network Integration ConfigurationTechnical data Remote SignallingStructure Following default signals are used for remote signalling DOU Graphical Display and Operation UnitLEDs SignallingAcoustic signal generator Keyboard OperationStart-up Possible symbol keys and their functionMain Menu Menu Structure Menu TreeOperating display Normal operation Operating DisplayExample of operating display Examples of possible displaysSolar radiation is too low, the inverter is in standby mode Monthly data t = day 1 31 for the last 12 months Example of yearly overview Status/Measured Values MenuMenu Inverter example BlockingInformation Fault HistorySettings Service