Home

Protect PV.250 Operating Instructions

1. X10 x108 x21 x208 x30 X 200 X 202 XIB SF SSS SHES z E ry gt J a s 2 g i Flm ate ally 3 7 42 S F f A17 H3 2 ah j f iI me e A1152 A115 1 E E 2 i a Ae e TiS TS i a SI 7 i iol lt f i z d Ras i ime al T H it au PAE Tal le el TA27 L re O41 a i ol i a WI J aH l J a1 AR l T j a q yl Eg T o
2. cece 11 The Operation Status ccccccccccccceeccceeeceeeeeeeeaeeeaeeeaeenes 11 Og Coed ge ees 10 Aer eee eee et cer eer eee 11 The Fault Status cccccccccccccecccecccececeeeeceeeeeeeeeeeeeeeeeeeeeeeeas 12 The Night Status aciccicstaanticoniccacicecsaxnscieecoraeianaiamtccustauanagtas 12 Sequence Control During the Course of the Day 12 Sequence Control Parameters ccccccecceeeeeeeeeeeeeeeeeeeeeees 14 Description of Fan Control cceecceeceeeeeeeeeeeeeeeeeeeeeeeeeees 14 General ser eae a a e r eet orucnatts 14 Fan Control Parameters 0 eseeeeeeeeeeeseeeeeeeeeeeeeeeeeeees 16 Insulation Monitoring and Earthing of PV Cells 16 CTA eee 16 Operation With Monocrystalline or Polycrystalline Cells 17 Operation With Thin Film Solar Cells cccccecseeseeeseeees 17 Insulation Monitoring in Partner Operation ceeeeee 18 Insulation Monitoring Parameters ccccceeeeeeeeeeeeeeeeeees 18 MPP Tracker 0 ccceeeeeee cece cece cece eeeeteeeeeeeeseeeseeeseeeeeeeeeeeeseees 18 Partner Operation ccccccecceeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeereeeeeees 19 Linked Operation ccccceeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeess 19 Single Operations a ee er eee re 20 Linked Operation in the Event of a Fault eeee 20 Partner Operation During the Course of the Day 0 21 P
3. culated limit value this start up attempt will fail Delay until the next start up attempt following failure on ac count of excess voltage dip After the failure of a start up attempt this delay must elapse before the next start up attempt is made Power limit value for shutdown delay time for shutdown If the power fed into the mains is below the limit value for longer than the delay time the unit switches to the Waiting status Standard delay for a renewed start up attempt following shut down offset delay added to the standard delay after shutdown maximum number of times the offset delay can be added to the standard delay Variable delay in the Waiting status see also Chapter 4 1 4 Minimum DC voltage fill factor PV system parameter If the DC voltage rises above a value resulting from the minimum DC voltage divided by the fill factor a start up attempt is made Description of Fan Control General The Protect PV 250 features temperature dependent fan control The fans are either switched off or run on a fast or slow fan stage Fan control extends the operating time of the fans minimises the noise generated by the fans and improves the efficiency of the unit by reducing its power consumption Page 14 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions As soon as the control assembly of the Protect PV 250 is supplied with voltage fan control always starts with the fast
4. gt Verbunden 00 02 09 VT100 3600 8 N 1 RF GROE 7 Fig 16 Main menu If the configuration does not start you must wait for 10 seconds and repeat the procedure Make sure that no data is received via the X2 X5 interfaces during this time Press one of the following keys in the main menu e lt CR gt to save all settings finish the configuration and acti vate the MultiCom interface e lt ESC gt to cancel the configuration e lt 2 gt to access the X5 data transmission configuration e lt 4 gt to access the X5 data protocol configuration The possible keyboard actions are shown in the menu in lt gt The following special keys can be used in all menus lt CR gt lt ESC gt lt TAB gt lt BS gt lt gt Carriage Return 4 or ENTER key Escape key Tabulator key Backspace lt or rubout key Space bar Page 32 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 6 1 4 2 Configuring the Modbus Protocol To access the X5 data protocol configuration you must press lt 4 gt in the main menu amp YT100 COM1 HyperTerminal of x Datei Bearbeiten Ansicht Anrufen bertragung EEEE EEEEEEEEEEEEEEEEEEEEETEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEE REG Power Solutions MultiCom CONFIGURATION V PPIMC22J D02 gt gt gt XS DATA PROTOCOL lt lt lt l gt Select CBSER protocol lt TAB gt Enter current protoc
5. 5 H H h i F e E eee j j Ani ES eo le o e Jeg Dna i g 7 mi m e l Tal a aL a ot m or i X41 L4 SEs a ON fa o TS p XB f HHBH E MEN wi L xu N X3UMW m mo FORO ee Hmmm e mnnn e n senn seeni eenn Fig 4 Arrangement of the operating elements components and individual PCBs with doors open p NOTE 1 The image above may not always be strictly accurate depending on which options have been selected Item Designation A1 Power stack 250 kW A115 1 A115 2 CAN I O A12 Remote signalling A17 PV INV interface A20 Partner operation A27 COM server A29 1 A29 2 Multicom CCC A30 Modem PV A91 1 A91 2 Fan monitoring F41 Input fuse DC voltage DC K7 Inverter output contactor L26 Mains filter choke only on MV version Q4 1 DC load interrupter switch X3 Inverter output mains connection X11 Power supply mains 2 X13 230 VAC client terminal X200 X203 Terminal layout cabinet connection X41 Input terminals DC voltage DC Page 8 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 2 Safety Instructions NOTE 1 All the key safety instructions are specified in the document entitled Installation Instructions and Start Up 3 System Description 3 1 General This chapter describes the operating modes and functions of the Protect PV 250 3 2 Operating Modes Two different operat
6. Protect PV 250 Operating Instructions AEG Power Solutions X3 When a signal is received the contact between the two con tact points with the lower numbers is closed normally open or NO X4 When a signal is received the contact between the two con tact points with the lower numbers is opened normally closed or NC X5 The control signal is active when the input is bridged normally open The inverter is switched off The following default signals are used for remote signalling X3 1 2 3 Inverter feed operation NO X3 4 5 6 DC distribution message NO X3 7 8 9 AC distribution message NO X3 10 11 12 Incoming mains fault NO X4 1 2 3 Inverter fault NC X5 1 2 Inverter remote switch off NO Collective signals that contain all messages and faults Fig 20 shows the normally closed contact in the state that applies when the signal is not active normally open or the voltage is zero The service switch enables maintenance work on the unit to be signalled to the MultiCom interface using various protocols Page 39 of 51 80000027023 BAL en 7 7 1 Protect PV 250 Operating Instructions AEG Power Solutions Graphical Display and Operation Unit General The graphical display and operation unit DOU is integrated into the front of the solar inverter It serves to signal and visualise unit data and to control the inverter system The DOU consists of a display unit with 3 LEDs a graphical LCD and an
7. a fault in partner operating mode Page 20 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Change of status to linked operation The system switches to linked operation when the fault message is acknowledged in the inverter affected by the fault The inverter affected by the fault is switched off logically once the fault has been acknowledged 4 5 4 Partner Operation During the Course of the Day Early morning The tie switch is closed from the previous day Overnight a deci sion has been made as to which inverter will be switched on logi cally in linked operation on this day and which will be switched off logically If the sequence control see Chapter 4 1 of both invert ers now switches from the Night status to the Waiting status one inverter is switched off logically The other inverter is switched on logically and feeds power into the mains subject to sufficient levels of insolation Linked operation is active Later that morning Insolation increases As a result the inverter feeding power into the mains works at increased capacity If capacity utilisation rises above a certain value the system switches to single operation The tie switch opens and the inverter which is switched off logically is switched on Single operation is active Evening Levels of insolation fall during the course of the day The capacity utilisation at which the two inverters are working drops a
8. day gt Monthly overview gt Current yearly overview gt Yearly overview Cr If messages have been output or faults have occurred you can acknowledge the acoustic signal generator here otherwise this key is not assigned ci Use the bottom key with the measuring instrument symbol to call up menus with detailed information on the status and meas ured values This key flashes in the event of a fault in the unit enabling you to access menus containing additional fault informa tion directly Power Solutions 7 3 4 Status Measured Values You can call up the Status Measured values menu from the operating display using the bottom key with the measuring instru ment symbol Here you can use the lt gt and ENTER keys to open the submenus containing the statuses and measured values for the individual unit components Press the ENTER key to return to the Status Measured values menu Status Measured values Photovoltaics Incoming mains Inverter COM interface AUX signals Fig 37 Menu Status Measured values You can use the Photovoltaics menu item to display the meas ured values for the panels Any faults in the DC distribution are shown here too Page 48 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Photovoltaics 600 R ISO K 100 O 481 289 Fig 38 Photovoltaics menu You can use the Incoming mains menu item to display the measured va
9. exit the COM server is now installed in the network Page 36 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions e Please use the ping command to test that the COM server can be reached in the network For additional detailed information please refer to the quick start instructions as well as the manual on the CD ROM 6 2 8 Configuration of the Virtual COM Port To install the virtual COM port on your operating system you have to start the CD ROM in the computer in question e Please select the Com Server button in the top line of the main window of the product CD The reference to the COM redirection appears amongst other items e Please click the corresponding Browse button A new dialog box appears with the prompt to select the operating system e Click the plus sign on the left of the window in order to be able to run this operation e Now select your operating system and perform the installation using the Install button Following installation the dialog box for the virtual COM port ap pears with the IP address of the COM server Here you can change or adapt the name of the COM port using the Numbering button Once you click OK the virtual COM port is installed For additional detailed information please refer to the manual on the CD ROM Page 37 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 6 3 Remote Signalling The r
10. fan stage The control can be restarted to check whether the fans are working cor rectly 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 IGBT stack temperature is checked after this time If it is below a certain value fan control switches to the slow fan stage The IGBT stack temperature is also checked in the slow fan stage If it is below a certain value the fans are switched off However if the temperature rises again during operation with the lower fan stage fan control switches back to the fast fan stage If the IGBT stack temperature rises above a certain value with the fans switched off fan control switches to the fast fan stage Fast fan stage least time IGBT Sack temperature lt limit IGBT Stack temperature gt limit IGBT Stack temperature gt limit Slow fan stage IGBT Stack temperature lt limit Fan switched off Fig 6 Fan control Page 15 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 4 2 2 Fan Control Parameters 4 3 4 3 1 Stack temperature limit value for switching on the fan If the IGBT stack temperature rises above this limit value the fans which were switched off are switched to the fast fan stage Stack temperature limit value for switching off the fan If the IGBT st
11. feed conditions Although the sun s rays are not as strong the DC voltage might still be high enough for a suc cessful start up attempt with the inverter stack and the inverter output contactor K7 being switched on again However because the sun s rays are not as strong it is unlikely that the operating conditions will still be met in the Operation status As a result the unit will switch back to the Waiting status once a delay has elapsed When the unit switches back to this status the delay is extended until the unit switches back to the Waiting for feed con ditions status The cyclic changes of status Operation gt Waiting gt Waiting for feed conditions gt Operation can take place several times depending on insolation the time of year location and other condi tions e g snow on the PV cells So that the inverter output con tactor K7 is not overloaded by this cycle of changes the delay in the Waiting status is extended every time the unit switches to this status This has very little effect on the energy fed in because the low levels of insolation mean that hardly any energy is being gener ated Later in the evening Levels of insolation continue to fall As a result the DC voltage drops again If the DC voltage drops below a certain value for a certain time no more start up attempts are made If the DC volt age continues to drop the unit switches to the Night status Night The Protect PV 250 s
12. is represented in the middle of the left hand section If a fault occurs or a message is present the corresponding sym bols flash on the inverter The bar on the left shows the PV voltage as a symbol and a digital value If the bar is completely filled in this indicates that sufficient PV voltage is present The bar on the right shows the inverter status If the inverter is feeding power into the mains the bar is filled in The total energy fed in is shown at the bottom of the display Examples of possible displays TE En Ser 69ed02k Wh Fig 27 The system is in its normal state the inverter is feeding power into the mains CO n ee 69s402k Wh Fig 28 Solar radiation is sufficient the inverter is switched off If the sine symbol on the inverter is flashing the inverter has been switched off due to a fault or it is currently in the synchronisation phase Page 45 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG O 2 a A Sere 9e402kWh Fig 29 Power Solutions Solar radiation is too low the inverter is in standby mode a A SES 98402k Wh Fig 30 Solar radiation is too low the inverter is in its idle state The middle section displays the unit s most important infeed values in the form of digital values and a graph covering a certain period of time The current daily data is shown as standard This display appears automatically if no keys have been pressed for 1 minute
13. period has elapsed the insulation test finishes and the active earthing is switched on again Page 17 of 51 80000027023 BAL en 4 3 4 4 3 5 4 4 Protect PV 250 Operating Instructions AEG Power Solutions The insulation test can only be started manually if an insulation test is not already running at the time Insulation Monitoring in Partner Operation In partner operation see Chapter 4 5 both inverters are fitted with the isometer Insulation measurement in single operation In single operation the two inverters behave like two single units Insulation measurement is active in both inverters Insulation measurement in linked operation In linked operation the inverters are connected on the DC voltage side If both inverter isometers were to be active in this operating mode this would distort the measurement of the insulation resis tance Therefore in linked operation the isometer of the inverter which is not active is switched off and its sensors are disconnected from the DC voltage Now only one isometer is active and the measurement of the insulation resistance is correct Insulation Monitoring Parameters MPP Tracker All parameters are only relevant for operation with thin film solar cells Insulation test time The analogue and digital signals from the isometer are evaluated during this time Delay for insulation test following shutdown of K21 Once the earthing has been disconnected this time must ela
14. serial EEPROM Monitoring X Watchdog watchdog Monitoring X 15 V supply voltage fault 15 V supply voltage Monitoring X Stack fault IGBT stack Monitoring X Short circuit short circuit overload Monitoring X Load current transformer fault load current transformer Monitoring X AC voltage deviation inverter output voltage Monitoring X Stack overcurrent stack overcurrent Monitoring X Synchronisation fault mains synchronisation Monitoring X ICommunication fault parallel communication parallel CAN CAN Monitoring X IRemote monitoring fault communication remote monitoring DC voltage monitoring systems Monitoring X DC voltage deviation DC overvoltage Grid monitoring systems Monitoring X Mains frequency deviation grid overfrequency Monitoring X Mains frequency deviation grid underfrequency Monitoring X Mains voltage deviation grid overvoltage Monitoring X Mains voltage deviation grid undervoltage Monitoring X Mains symmetry fault symmetry fault Page 24 of 51 80000027023 BAL en 6 6 1 6 1 1 Interfaces Protect PV 250 Operating Instructions AEG Power Solutions PV power stations are usually monitored from a central location Alongside the PV cells the inverter is a key component of a power station which is why several communication interfaces are avail able as standard These include relay contacts and optocouplers as well as various serial interfaces with protocols for integration into hig
15. subse quent operation the switch is only opened by deactivating faults see Chapter 5 The inverter output contactor K7 remains open initially The con tactor is switched by sequence control The sequence control statuses are shown in graphic format in Fig 5 OFF command OFF command Operating Daytime conditions met detection Operating Night time conditions no detection longer met Fault acknowledgement OFF command Fig 5 Sequence control The Protect PV 250 has been switched off logically via the DOU or the master control unit The unit is running without faults the monitoring systems are not activated In this status no power is fed into the mains Possible change of status The status can be switched from OFF to Waiting for feed condi tions by switching the unit on via the DOU and the master control unit Page 10 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 4 1 2 The Waiting for feed conditions Status In this status the Protect PV 250 monitors the DC voltage of the PV cells that is present at the unit as well as the mains voltage and the mains frequency The monitoring systems are activated In this status no power is fed into the mains Possible change of status If the DC voltage rises above a certain value for a certain time and the mains voltage and mains frequency are within a certain range the unit switche
16. 250 Operating Instructions AEG 7 3 5 Blocking 7 3 6 Fault History 7 3 7 7 3 8 Settings Information Power Solutions There then follows the total energy counter gt and the inverter op erating hours counter gt You can scroll through the measured values using the v and 4 keys You can use the COM interface menu item to look up the statuses of the communication PCBs You can use the AUX signals menu item to look up the status of optional general signals on the remote signalling board You can call up the Blocking menu from the main menu After you have entered the current password you can block operation of the inverter switching on off and fault acknowledgement The password must be entered digit by digit and then confirmed by pressing the ENTER key The default password is 1201 In menus where switching operations are normally possible block ing is indicated by a key You can call up the Fault history menu from the main menu A data logger that records the inverter s fault history is integrated in the inverter unit You can display the 20 most recent faults as of the current date or as of another specific date You can call up the Settings menu from the main menu Here you can set the following parameters in the submenus LCD contrast Language Real time Acoustic signal generator for indicating faults and for key board operations You can call up the Information menu from th
17. AEG Power Solutions Protect PV 250 Operating Instructions AEG Power Solutions GmbH Department PS TED Name Wegener Schenuit Revision 01 Date 27 09 2010 Operating Instructions 8000027023 BAL en Protect PV 250 Operating Instructions AEG Table of Contents WOW Ww N k N Q N gt w w NN NO AARARAARAAR AS a e CE ONOoaBRWN 4 2 Power Solutions General Information sso sisesssscstecceec necpeearecencepance ce ceensecennteswcenss 4 MINEO yaa ah ates castes umeancatated i ntald bale pemecuats buobaedeaanetadeaenes 5 Operating ElSINGNtS xicestieco d ect canceled cee ene 7 View of the Cabinet ccccccccccecccecccceccceeeceeeeeeeeeeeeeeeeeteneess 8 Safety Instructions cde ccanseticdete chcaselicticdic dicate deeded 9 System Description cseeecessseeeeeeeseeeeeeeesseeeeeeessenneeeeseeees 9 General ssie iaeaea aiaa taani 9 Operating MOUS weccitacnicconseceniiconedadatccnimevetabiorrametbieateniatuyanses 9 Individual Operation ceeceeeceeeeeeeeeeeeeeeeeeeeeseenseenseeene 9 Partner Operation ccecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 9 System Function ssi sasscccessesusce ceecesnccencecactecantsnscnecseseereeressence 10 Description of Sequence Control cceeeeeeeeeeeeeeeeeees 10 The Off Status cccccccccceecceeceaeeeaeeeaeeaaeeaaeeaaeeaaaeaaaesaaeaes 10 The Waiting for feed conditions Status
18. Pew Mo 10 0kt 2009 125 t P 102kW E 3sikWh Fig 31 Operating display Central section You can use the double arrow key to select the following in feed periods Pew Mo 10 0kt 2009 125 P 102kW E 351kWh Fig 32 Daily data for the current day previous day t 00 00 04 00 15 minute intervals Page 46 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions E kWh Okt 2009 52H 53 E 4075kWh Fig 33 Monthly data t day 1 31 for the last 12 months Ekwh z009 S2665 E 208469k Wh Fig 34 Current yearly data t month 1 12 Erwh 2007 2009 2952625 meses E 696402k Wh Fig 35 Yearly overview t year of start up to current year The current display key assignment is shown on the right hand side Fig 36 Operating display Right hand side Page 47 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Eee Here you can switch the inverter on or off depending on the unit status If the operation has been blocked this is indicated here via a key symbol If a blank button is shown here a fault is pre sent The flashing measured values menu then takes you to the inverter menu where detailed information can be found on the fault and where you have to acknowledge it You can use the double arrow key to select the different display types for the energy data logger Current day default gt Previous
19. a termi nal program such as HyperTerminal on the PC Setting the terminal program Data transmission COMx 9600 baud 8 data bits 1 stop bit No parity no protocol Terminal emulation VT100 You can then start the configuration by pressing the S1 but ton on the MultiCom interface You must make sure that no com munication has taken place via the X2 X5 interfaces for at least the previous 10 seconds The start of the configuration is indicated by two flashing LEDs on the MultiCom interface and by the following message on the termi nal display PRESS lt CR gt FOR CONFIGURATION WHILE LED IS FLASHING The configuration starts providing you press the lt ENTER gt key lt CR gt within 30 seconds The configuration main menu is opened Page 31 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 1T100 COM1 HyperTerminal ioj x Datei Bearbeiten Ansicht Anrufen bertragung EERE EAAA AERA AAA EE EEE RELA AE EEE LEAL AEE EEEE EAE EEREREEEEE AEG Power Solutions MultiCom CONFIGURATION Y 2 PPIMCZZI_ DOZ lt l gt 2 gt 3 gt 4 gt S gt i lt 6 gt 2 data transmission data transmission data protocol data protocol data protocol remote signalling lt i gt System information lt gt MCC factory settings lt CR gt Save all settings and finish EERE EEAA AREER AAA RE EA EE AEE AAA AEA AAA EAE AAA RA EAE EEAE EERE EE OF
20. ack temperature falls below this limit value the fans which were running in the slow fan stage are switched off Stack temperature limit value for switching to the fast fan stage If the IGBT stack temperature rises above this limit value the fans which were running in the slow fan stage are switched to the fast fan stage Stack temperature limit value for switching to the slow fan stage Minimum time in the fast fan stage If the IGBT stack temperature falls below this limit value the fans which were running in the fast fan stage are switched to the slow fan stage if the minimum time in the fast fan stage has elapsed Insulation Monitoring and Earthing of PV Cells General Insulation measurements and tests are carried out with a Bender A ISOMETER IRDH275B This device detects and checks the in sulation resistance The insulation resistance detected is compared with two limit val ues stored in the isometer If the insulation resistance is below one of the limit values the device generates a signal If the limit value is below the other limit value the device generates a second sig nal The limit values can be displayed and even modified on the isometer The insulation resistance detected and the two signals are sent to the Protect PV 250 control The insulation resistance is displayed as a measured value Signalling faults are generated from the two isometer signals see Chapter 5 Sequence control behaviour differs dependi
21. alue in Operation the unit switches to the Waiting status Although the incoming power is low the DC voltage of the PV cell could still be high enough and even stable enough to meet the feed conditions in the Waiting for feed conditions status So that the inverter does not switch back on again immediately thereby subjecting the inverter output con tactor K7 to unnecessary load due to frequent switching after the Operation status the unit initially switches to the Waiting status It remains in this status for a certain time only switching to the Waiting for feed conditions status once this time has elapsed The monitoring systems are activated Page 11 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Possible change of status Once the delay has elapsed the unit switches to the Waiting for feed conditions status If a deactivating or self acknowledging fault is triggered the unit switches to the Fault status The status can be switched from Operation to OFF using the Off control command 4 1 5 The Fault Status If a deactivating or self acknowledging fault is triggered see Chap ter 5 the unit switches to the Fault status The monitoring systems are activated In this status no power is fed into the mains Possible change of status If a self acknowledging fault has been triggered and this fault does indeed acknowledge itself the unit switches to the Wait
22. an RS485 network the ends of the bus must always be terminated If required insert the 120R resistor supplied be tween connections A and B Shield connection of the RS485 bus line Shielding is a means of weakening attenuating magnetic elec trical or electromagnetic interference fields Interference currents on line shields are dissipated to earth by means of the shield busbar that has a conductive connection to the housing A low impedance connection to the PE conductor is es pecially important to prevent these interference currents from themselves becoming a source of interference If possible only use lines with a braided shield The shield cover age should be at least 80 Avoid using lines with a foil shield be cause tensile and compressive stresses applied when fastening the line can easily damage the foil resulting in a reduction in the shielding effect Please bear the following points in mind when handling the shield e Use cable clips or shield terminal blocks made of metal to se cure the braided shield The clips must surround the shield and make good contact with it over a large area e Route the shield on a shield busbar directly from where the line enters the cubicle Route the shield right up to the assembly however ensure that it does not make contact there When used in PV applications the shield of the RS485 bus line should only be earthed on one side so that no equalising or inter ference currents ca
23. artner Operation Parameters cceccceeeeeeeeeeeeeeeeeeeees 21 Monitoring Systems Messages and Faults 000 22 Gen ral seir a de a ean 22 Table of Faults rices ir ERE 23 Page 2 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 6 Interfaces seccsscscsceascessceasssenscnvsaadieassaesstansscassavsieastaissassaaasieaies 25 6 1 Communication Interface ccccccecccceccceeeeeeeeeeeeeeeeeeeeeneees 25 6 1 1 GMP al eee ceeeeeeeeeeeeeeeeeeeeeee cece eeeeeeeeeeeeeseeeseeeseeeeeeeeeeeeeeees 25 6 1 2 Technical Data cc cceccesseeeeeeeeeeeeeeeseeeeeeeeeeeeseeseeeeeseeeeeees 26 6 1 3 Structure of the MultiCom CCC Interface 0 cee 27 6 14 Contig ratiOMs iiciin eee rr 31 6 1 4 1 Configuration Preparations ccccceeeeeeeeeeeeeettteeeeeeeeeeeeee 31 6 1 4 2 Configuring the Modbus Protocol cceeeeeeeeeetteeeeeeeeeeeeee 33 6 1 4 3 Configuring Modbus Data Transmission 00eee 34 6 2 COM Server E 35 621 General r egit ities cee a E a E ae 35 6 2 2 Network Connection 0 ceseeeeeeeeeeeeeeeeeeeeseeeseeeseeeseeeseeees 35 6 2 3 COM PO arrisera i E a ETENE 35 6 2 4 Power Supply 0ccseeeeeeeceeeeeeeeeeeeeeeeeeeeeeeeseeeseeeeeeeseeeeseees 35 NSE Ses sate gat ersees Meus a aa a a a EE 36 6 2 6 Installation of the Virtual COM Pott eeseeeeeeeeeeeee 36 6 2 7 Network Integration Configurati
24. ated The following monitoring systems will cause the inverter to switch off are self acknowledging or signalling and are shown on the DOU with corresponding plain text Page 22 of 51 80000027023 BAL en Protect PV 250 Operating Instructions 5 2 Table of Faults AEG Power Solutions Fault Message Deacti Self Signal DOU message vating acknowl ling edging Temperature monitoring systems IGBT stack temperature warning X Equipment temperature fault IGBT stack temperature fault X Equipment temperature fault IGBT supply air temp warning X lAmbient temperature fault IGBT supply air temperature fault X Ambient temperature fault Unit exhaust air X lAmbient temperature fault temperature warning Unit exhaust air X Ambient temperature fault temperature fault Temperature sensor fault X Temperature sensor fault IGBT stack Temperature sensor fault X Temperature sensor fault IGBT supply air temperature Temperature sensor fault X Temperature sensor fault unit exhaust air temperature CAN I O monitoring systems Feedback signal X Q4 x Switch feedback fault DC load interrupter switch Q4 1 Switch position Q4 1 X Q4 x Switch open Feedback signal X K21 Switch feedback fault K21 earthing PV cells Monitoring X Miniature circuit breaker tripped F21 earthing circuit breaker Monitoring X Overvoltage protection tripped F81 surge volta
25. certain time is allowed to elapse before the digital signals from the isometer are evaluated and the analogue measured value is output Sequence control When the Protect PV 250 sequence control switches to the Night status see Chapter 4 1 6 the active earthing is switched off once a certain time has elapsed The insulation test starts with a delay after a certain test time the insulation test is terminated and active earthing is switched back on If the sequence control switches to the Operation status be fore the test time has elapsed the timer control is ignored the in sulation test is terminated and active earthing is switched back on Maintenance mode Maintenance mode can be triggered either via a command or by means of remote signalling Active earthing switches off immedi ately when maintenance mode is activated However the digital and analogue signals from the isometer continue to be ignored Active earthing is switched on again the next time a switch is made to the Operation status However the unit remains in mainte nance mode for at least a certain time i e even on a change of status to Operation maintenance mode is not terminated until this time has elapsed Starting the insulation test manually The insulation test can be started manually for maintenance work Active earthing is switched off after the start of the insulation test and the insulation test starts once a delay has elapsed When the test
26. e main menu Using this menu you can look up information about the unit type the firmware versions and the available communication options Page 50 of 51 80000027023 BAL en 7 3 9 Service 7 3 10 Help Protect PV 250 Operating Instructions AEG Power Solutions You can call up the password protected Service menu from the main menu The password must be entered digit by digit and then confirmed by pressing the ENTER key The default password is 1201 Once the current password has been entered you can select a submenu where you can change the DOU password e Inthe Password menu you can set the password for block ing operation and for setting parameters A range of 0000 to 9999 is possible ATTENTION Keep the password secure If you have forgotten the password the DOU will need to be reset at the customer s expense You can call up the Help menu from the main menu using the 2 key This enables you to look up the meaning of the key board symbols Page 51 of 51 80000027023 BAL en
27. e based on microcomputer assemblies The fact that the various assemblies are logically integrated and linked into the overall system means that unit properties can be defined by making unit specific parame ter settings in the software Information is exchanged between the individual modules using the CAN bus Controller Area Network This CAN bus features high interference immunity and is used in a wide variety of indus trial applications DC PV modules Display o Control unit Control unit power supply AC mains 2 AC Incoming mains Fig 1 Functional principle of the Protect PV 250 for connection to a low voltage mains The main assemblies of the inverter are Fig 1 e DC load interrupter switch Q4 e Inverter stack display and control unit with communication components e AC filter e Inverter output contactor K7 e Mains transformer e Mains disconnector Q26 e Mains filter choke only on MV version L26 see Fig 2 Page 5 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Fig 1 illustrates the principle of the Protect PV 250 The PV cells supply the INV stack with DC voltage via DC load in terrupter switch Q4 The INV stack converts this DC voltage into a 3 phase AC voltage A sinusoidal current is fed into the mains via the AC filter contactor K7 and the mains transformer Main
28. e key functions that are currently active are represented as symbols which can be found in a small framed area on the right hand side of the LCD In the Operating display and Inverter menus you can switch the inverter on and off using the general keys The keyboard symbols in the menu indicate the control function which is currently available If a switch off procedure has been initiated you must confirm it by means of a security prompt in order to avoid inadver tent switching off The general control system of the inverter can be blocked and protected with a password If a unit fault occurs refer to the Inverter menu where the cause is specified After eliminating the cause acknowledge the fault in the menu You can then switch the individual converters back on again You can acknowledge the acoustic signal generator using the keyboard On the LCD operating display you will find a special ac knowledgement key represented by a loudspeaker symbol In all other menus you can press any key even a key to which no func tions have been assigned to acknowledge the generator If the number of messages or faults increases the acknowledgement is cancelled You can impose a general block both on the acoustic signal generator from notifying you of faults and on the clicking sound when you press a key Page 41 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Possible keyboard symbols and their fu
29. ection option which can be used for monitoring via a remote panel The MultiCom CCC interface can be found on the pivot inside the AC cabinet item A29 1 see the assembly diagram Page 25 of 51 80000027023 BAL en 6 1 2 Technical Data Protect PV 250 Operating Instructions AEG Power Solutions MultiCom CCC hardware data assembly A29 1 Connector i Port 1 RS232 for configuration and COM server connection X2 9 pin D sub socket insulated Port 2 RS232 RS485 for Modbus X5 9 pin D sub socket insulated RS485 connection Twisted pair with Data Data shielded shield attached on one side Distance 1200 m max at 9600 baud Bus stations Max 32 Data line Shielded 1 1 2 x 0 22 twisted pair e g Lapp UNITRONIC BUS LD Port 3 CAN bus for remote panel X4 3 pin Combicon connector Communication data port 1 X2 Protocol CBSER Transmission rate 1200 57 600 baud variable Transmission parameters 9600 baud 8 E 1 default Configuration mode 9600 baud 8 N 1 Communication data port 2 X5 Protocol Modbus Transmission mode Half duplex Transmission code RTU Transmission rate 1200 57 600 baud variable 19 200 baud default Start bits 1 Data bits 8 Parity none even odd variable Stop bits 2 with no parity 1 with parity Function code 03 read register 06 write register 16 write multiple registers Min response time of slave 0 99 ms variable 0 ms default Modb
30. egulate the two inverters to the same DC voltage When the DC voltages are approximately identical the tie switch is closed Once the tie switch has been closed one inverter is switched off If the DC voltages cannot be regulated to the same value in a certain time the two MPP trackers are switched back on Once a delay has elapsed the MPP trackers are switched back off again and the next attempt to match the DC voltage is started Change of status to linked operation in the event of a fault In the event of a deactivating or self acknowledging fault in one in verter the two inverters are switched to linked operation First the inverter which is not affected by the fault is also switched off The DC voltage is checked When the DC voltages are ap proximately identical the tie switch is closed and the inverter which is not affected by the fault is then switched back on If the DC volt ages are still not the same once a certain time has elapsed the in verter which is not affected by the fault is switched back on After a delay a new attempt is made to exit single operation and switch to linked operation in the event of a fault 4 5 3 Linked Operation in the Event of a Fault One inverter is switched on and is feeding power into the mains The other inverter has been shut down due to a fault The tie switch is closed This operating mode is active when one inverter is affected by a fault Fig 10 Linked operation in the event of
31. emote signalling board is a contact interface for signalling PV messages and controlling PV units It is supplied as an option for the AEG PV system and is intended for installation in the PV unit The remote signalling master board consists of 5 potential free signalling contacts and one control input There is an independent 24 VDC power supply for the control in put The control signal is activated by bridging the relevant input There is no need for an additional auxiliary power supply The signals are assigned as standard or can be configured on a customer specific basis An integrated service switch enables maintenance work on the unit to be signalled Technical data The maximum load of the signalling contacts X3 X4 is 250 V 8 A AC or 50 V 2 A DC NOTE 1 If the specified power has been applied to the relay contacts once those contacts can no longer reliably switch an extra low voltage evaporation of the gold alloy The control input X5 has an independent 24 VDC power supply The input is activated via a bridge Structure Fig 20 Remote signalling master module A12 top view X1 Power supply connection X2 Connection for remote signalling expansion board X3 X4 Remote signalling outputs with relay changeover switches X5 Remote signalling input via optocoupler with inde pendent power supply X6 Service plug X7 Connection to a MultiCom interface S1 Service switch Page 38 of 51 80000027023 BAL en
32. ge arrester DC input Monitoring X Insulation monitor warning insulation monitor level 1 Monitoring X Insulation monitor alarm insulation monitor level 2 Monitoring mains voltage X lAuxiliary power supply mains auxiliary power supply mains 2 failed Monitoring Xx F82 F83 Overvoltage protection F82 F83 surge voltage arrester tripped AC mains 1 2 Monitoring X F60 Miniature circuit breaker F60 auxiliary power supply mains 2 tripped Monitoring X F61 Miniature circuit breaker F61 independent power supply tripped mains 1 Monitoring X Q26 Switch open Q26 AC mains disconnector Monitoring X Unit cabinet door open unit cabinet door Monitoring communication CAN I O X ICommunication fault with I O AC cabinet control Monitoring communication CAN I O X ICommunication fault with I O DC cabinet control Monitoring X 1 O parameter error CAN I O parameters Page 23 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Unit monitoring systems Monitoring X Fan failure fan fault Monitoring K91 X K91 Switch feedback fault feedback signal fan contactor Monitoring K7 X Fault K7 feedback signal feedback signal INV output contactor Monitoring X Parameter limit fault parameter limits Monitoring X Self test fault PCB ID Monitoring X EEPROM fault EEPROM Monitoring X System fault
33. gy produced by the PV cells into an AC voltage mains The Protect PV 250 is available in two basic versions For feeding into a low voltage mains e g 400 VAC For feeding into a medium voltage mains e g 10 kV 20 kV 33 kV The required mains transformer is not supplied with either version of the unit and can be ordered as an extra if necessary It is possible to combine two Protect PV 250 units to create a 500 kW system With the low voltage version each Protect PV 250 has its own iso lating transformer whereas a shared isolating transformer can be used for the medium voltage version in this case each Protect PV 250 has an electrically isolated low voltage connection 500 kW systems can be made to support partner operation to in crease their efficiency The nameplate featuring all relevant data can be found on the AC panel on the inside of the door NOTE 1 Important information about Protect PV 250 documentation Further descriptions and unit diagrams are included in the docu ment folder Page 4 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 1 1 Technology Due to the utilisation of high performance electronic components the Protect PV 250 boasts a very high degree of operational reli ability is extremely efficient and is characterised by its versatility in communicating with other systems by means of interfaces The entire control electronics of the Protect PV 250 ar
34. her level monitoring systems In terms of monitoring PV power stations AEG also offers corre sponding additional components that are adapted for use with in verters and PV generators This enables the client to monitor an entire PV power station from a central location easily and reliably Communication Interface General The photovoltaic inverter is equipped with a central communication unit a MultiCom CCC interface As well as performing various other functions this unit facilitates communication between PV inverters and higher level monitoring systems A special system of central monitoring via the Internet can be real ised using AEG monitoring components such as the PV LoG The connection between the inverter and PV LoG has been opti mally adapted for monitoring and management purposes and is established via the Modbus protocol If you have any further ques tions please contact your supplier Two separate potential free serial interfaces are provided as stan dard for the purpose of establishing communication connections One interface port X2 is assigned the AEG specific protocol CBSER and is used both locally and remotely for corresponding service tools The other one port X5 supports the Modbus pro tocol and enables the PV inverter to be integrated into higher level monitoring and control systems with ease This port can be switched over from RS232 to RS485 An external CAN bus provides a further conn
35. hes to linked operation if the difference is less than the pa rameter value Monitoring Systems Messages and Faults General All monitoring systems only generate fault messages when the in verter is switched on when it is switched off the inverter is always reported as being free of faults A distinction is made between deactivating self acknowledging and signalling faults Deactivating faults switch the unit off permanently K7 and Q4 are opened The fault can be acknowledged manually or by switching the unit off and on However if the cause of the fault is still present follow ing manual acknowledgement another deactivating fault will be generated Self acknowledging faults switch the unit off K7 is opened Q4 remains closed The unit starts up again when the cause of the fault is no longer present The fault can also be acknowledged manually or by switching the unit off and on However if the cause of the fault is still present following manual acknowledgement another self acknowledging fault will be generated Signalling faults do not have any effect on the unit s sequence control K7 and Q4 remain closed A signalling fault acknowledges itself automatically when the cause of the fault is no longer present The fault can also be acknowl edged manually or by switching the unit off and on However if the cause of the fault is still present following manual acknowledge ment another signalling fault will be gener
36. huts down all possible loads so that as little energy as possible is being consumed The inverter remains in the Night status until the following morning Page 13 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 4 1 8 Sequence Control Parameters 4 2 4 2 1 Switch on conditions Underfrequency overfrequency undervoltage overvoltage The unit will only switch from the Waiting for feed conditions status to the Operation status if the feed conditions are met These conditions include the mains voltage and the mains frequency These values must be within certain limits which are described with the switch on conditions Voltage limit value for night detection delay time for night detection If the DC voltage falls below the voltage limit value for longer than the delay time the unit switches to the Night status Voltage limit value for day detection delay time for day detection If the DC voltage rises above the voltage limit value for longer than the delay time the unit switches to the Waiting for feed condi tions status Stack switch on time The time for which the inverter stack is switched on during a start up attempt Permissible voltage dip after switching on the stack Prior to the start up attempt a limit value is calculated from the in stantaneous DC voltage and the permissible voltage dip If the start up attempt causes the DC voltage to fall below this cal
37. ing for feed conditions status If a deactivating fault has been triggered the Acknowledge fault control command can be used to switch the unit back to the Wait ing status The status can be switched from Fault to OFF using the Off control command In the OFF status the unit is always free of faults 4 1 66 The Night Status If the DC voltage falls below a certain value for a certain time the Protect PV 250 switches to the Night status The monitoring systems are activated In this status no power is fed into the mains Possible change of status If the following morning the DC voltage rises above a certain value for a certain time the unit switches to the Waiting for feed conditions status If a deactivating or self acknowledging fault is triggered the unit switches to the Fault status The status can be switched from Operation to OFF using the Off control command 4 1 7 Sequence Control During the Course of the Day Early morning The Protect PV 250 is in the Night status The sun s rays in crease the DC voltage generated by the PV cells If this voltage stays above a certain value for a certain time the unit switches to the Waiting for feed conditions status The DC voltage continues to be monitored in this status In order for a start up attempt to be made it must remain above a certain value for a certain time The mains voltage and mains frequency are also checked These values mus
38. ing modes may be used e Individual operation e Partner operation 3 2 1 Individual Operation In individual operation the inverter works independently and is not connected to any other inverters The DC infeed from the PV cells and the link to the AC mains are only connected to this inverter Switching operations control commands and modifications to set ting parameters are only performed by the unit concerned 3 2 2 Partner Operation In partner operation two inverters are connected via a CAN bus The DC voltage infeeds of both units can be linked using a tie switch Levels of efficiency can be increased in this operating mode by running one inverter on two connected PV cells at less than full power It is the inverter itself that connects and discon nects the DC voltage it is also responsible for switching the units on and off This operating mode is described in detail in Chapter 4 5 Page 9 of 51 80000027023 BAL en 4 4 1 4 1 1 Protect PV 250 Operating Instructions AEG Power Solutions System Function Description of Sequence Control The Off Status As soon as the control assembly of the Protect PV 250 is supplied with voltage sequence control starts Initially the load interrupter switch Q4 remains open Once the ini tialisation phase is complete and if no deactivating and self acknowledging faults are pending the load interrupter switch Q4 is closed in the Waiting for feed conditions status During
39. lues for the incoming mains Any mains faults or faults in the AC distribution are shown here too Incoming mains Uii2 31 V 270 270 270 Ti1 3 A 587 587 587 F Hz 50 0 Faults 2 Fig 39 Incoming mains menu You can use the Inverter menu item to display the statuses and measured values for the inverter You can toggle between the two menus using the gt and lt keys In normal operation the inverter can be switched on and off using the top key here In the event of a deactivating fault you can call up a detailed description of the fault here Once the fault has been rectified you will need to acknowledge it using the top key A high voltage symbol 4 will then appear on the top key INV status MPP feed operation INV measured values Uii2 31 V 270 270 270 Tu1 3 A 587 587 587 P kW 261 S KVA 275 Q kvar 14 cos phi 275 F Hz 50 0 E kWh 937 T C 25 0 T2 C 28 0 2E kWh 2089336 2 h 1262 Fig 40 Inverter menu The voltage and current of the three phases are displayed as measured values The power values P S Q and cos phi appear underneath these voltages and currents These are then followed by the frequency F and the daily energy E The ambient temperature of the cabinet T4 and the supply air tem perature of the inverter stack T2 are shown as the temperatures Page 49 of 51 80000027023 BAL en Protect PV
40. n flow through the shielding However if sev eral bus stations are present you must make sure that the shield is never interrupted Please always attach the shield of the RS485 bus line to earth on the quiescent side i e only one side of the shield is attached to earth on the master or data logger side In the PV inverter the shield must not be connected to the housing in any way Insert the RS485 bus cable into the unit until it reaches the Mul tiCom interface shorten it accordingly and attach both wires to terminals A and B Page 29 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions The X5 interface can be switched from RS485 to RS232 with jumpers J4 and J5 The factory setting is RS485 i e all jumpers are inserted at J4 You have the option to switch the interface to RS232 by reconnecting all jumpers to J5 Port 2 X5 RS232 pin assignment Pe ets Handshake kousa INV rousing poieni If the RS232 version is used for this port please use a 1 1 data line Controller Area Network CAN at X4 Up to four remote panels can also be connected to the potential free CAN interface for central signalling and display 1 r oa R G e ee Fig 14 Connector X4 Port 3 X4 CAN pin assignment Pin number Designation Cable colour coding Please use a shielded CAN bus cable as the line e g 2 x 0 22 twisted pair Lapp UNITRONIC BUS LD Route the CAN bus line f
41. n speed and the duplex process are automatically negotiated with the connected switch or hub and are set accordingly Ex works the COM port is set so it can communicate directly with MultiCom interface connector X2 of the PV inverter via RS 232 The power supply is connected at the screw terminal blocks lo cated on the underside of the housing A DC voltage of any polar ity may be used The protection against polarity reversal means the following maximum and minimum values apply to the supply voltage e 12 VDC 10 24 VDC 10 A corresponding switch mode power supply in the PV inverter supplies the COM server with power Page 35 of 51 80000027023 BAL en 6 2 5 LEDs Protect PV 250 Operating Instructions AEG Power Solutions Power LED This signals that the supply voltage is connected If this LED does not light up please check that the supply voltage is connected cor rectly Status LED This flickers when there is any network activity on the serial port Periodic flashing indicates that the port has a valid connection to another network station Error LED This uses different flashing codes to indicate error statuses on the COM server or the serial port 1 x flashing Check network connection The COM server cannot receive a link pulse from a switch or a hub Please check the cable or the network components 2 x flashing Check serial data format At least one mark with a parity frame error was received
42. nction Switch off inverter Switch on inverter Acknowledge acoustic signal generator Cursor up Increase value Scroll upwards Cursor down Decrease value Scroll downwards Cursor to the right Cursor to the left Status Measured values menu System is blocked Acknowledge fault Select day month year curve ku Help menu No function Ia 0 a Fig 22 Keyboard symbols 7 2 Start Up Following the power up reset the DOU performs a self test Data is read from the inverter once the test has been completed suc cessfully The LEDs light up in sequence during this phase A start screen appears on the LCD and a status bar indicates the duration of the start up process When you start up the DOU for the first time select the menu language using the general keys lt and gt The languages that are available are indicated using their respective country specific abbreviations the same as those found on car number plates The language that is currently selected is displayed on a black background Once you have confirmed the selected language by pressing the ENTER key the next menu opens In order to comply with international requirements all of the displays up to the one for language selection are displayed in English Page 42 of 51 80000027023 BAL en Protect PV 250 Operating Instructions __ _ o AEG Power Solutions 7 3 Menu Structure 7 3 1 Menu Tree Power ON Fault i history Settings Status Measured C
43. ng on which solar cells are connected The solar cells do not need to be earthed for operation with monocrystalline or polycrystalline solar cells Insulation measure ment is always active In the case of operation with thin film solar cells the solar cells have to be earthed Insulation measurement is not active during earthing Insulation measurement sequence control features a Mainte nance mode This mode can only be activated for thin film solar cells Activating this mode removes earthing This can be useful when mowing areas where solar panels are installed for example Page 16 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 4 3 2 Operation With Monocrystalline or Polycrystalline Cells General This type of solar cell does not require active earthing Sequence control Insulation monitoring is always active Maintenance mode No action in the event of a maintenance mode command Starting the insulation test manually No action since the insulation test is always active 4 3 3 Operation With Thin Film Solar Cells General This type of solar cell requires active earthing Active earthing is switched on during the day and switches off at night an insulation test is carried out whilst the earthing is switched off When active earthing is switched on the digital signals and ana logue signal from the Bender Isometer are ignored Once active earthing is switched off a
44. ol lt l gt New protocol lt CR gt Return ESC Cancel lt E Current protocol MODBUS JBUSwvZ FREER EEA EE EEE EEE EERE EEE EEE EE EEE EEE EERE EEE E EERE ERE EEE 4 L Verbunden 00 05 39 VT100 3600 8 N 1 RF GROS 5 Fig 17 Data protocol configuration Press one of the following keys in the X5 Data Protocol menu e lt TAB gt to configure the Modbus protocol e lt CR gt to save all settings The configuration is finished and the main menu is opened again e lt ESC gt to cancel the configuration This opens the main menu T100 COM1 HyperTerminal Iof x Datei Bearbeiten Ansicht Anrufen bertragung Dls 213 cls El kttttttttttttktttkttt ttttkkttkkttkktkkkkEEEEEEEEEEEEEEEEEE a BR E G Power Solutions MultiCom CONFIGURATION ee VY PPIMCZZ2I DOZ gt gt gt XS DATA PROTOCOL gt MODBUS JBUSvZ lt lt lt Z gt Response delay Oms lt gt Modbus JBus factory settings lt CR gt Return lt ESC gt Cancel ERE EE EEE EERE AEE AEE EEE EEE EE EERE EEE EEE EEE REE EEE ERE REE EEE EEEEE M Verbunden 00 06 58 T100 9600 8 N 1 RF GROS 7 Fig 18 Modbus protocol configuration Press one of the following keys in the X5 Data Protocol Mod bus JBusV2 menu lt gt to load the factory settings e lt 1 gt to configure the Modbus slave address e lt 2 gt to configure the delay time between a request from the master and the
45. on eeeeeeeeeeeeeeeeeeees 36 6 2 8 Configuration of the Virtual COM Port 37 6 3 Remote Signalling seeeseeseeeseeeeeeeeseeeseeeseeeseesseeeeeeees 38 7 Graphical Display and Operation Uniit cccsssssssseee 40 7 1 ETS nS al siveecicbecad eves E Obed asinb dana cde taeda eaves 40 PAZ SSUOUAMAG ecsctuccccutie stare a a a eee wees 41 7 1 2 Keyboard Operation saissiccccccncdsecncsstactucvcrsevarsavenideaentetadeeuarernane 41 7 2 Start UP eiiis aieiai aiai d hinti annin a eaka aHa 42 7 3 Menu Structure 0 c ccc cee cece cece eeeeeeeeeeeeeeseeeseeeseeeeeeeseeeeeeees 43 7 3 1 Men Tre 00 0 ccc eccccceeceeeeeeeeeeeeeee eee eee eee eeaeeeeeeeeeeeeeeeeeeseeeenees 43 G32 Main Men s elie 43 7 3 3 Operating Display cscs incictedevedccxceranaten ceca pixcantertatdeatsccedeccsntauanes 44 7 3 4 Status Measured Values cccceeeeeeeeeeeeeseeetseeeseeeseeeneeees 48 3 9 VBE ING T eenia aaia a A A A a e SEEE 50 1 9 0 Fault SCO oat facets elie ie tates Sect oh aed eane daa nctanamtat case 50 CT UNS mr ees seers ews Deeps eee ete 50 K3 8 normato et gidinsidesies evo a E ES 50 ESQ Serice eneore E EEE A E EEEN 51 7 39 10 Help cchcenrtidantocersdtccuas tune tasredsmihtemimaakehenbibinsd hbasiasecebeenssseabheucs 51 Page 3 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions General Information The Protect PV 250 is a solar inverter INV that feeds the electri cal ener
46. on the se rial port Please check that the set serial parameters and the serial data cable are correct All LEDs on Self test fault The self test performed after each start or reset of the COM server could not be terminated correctly This fault can occur if you have cancelled an update of the COM server prematurely Please refer to the supplied manual on the CD ROM from W amp T for more information about the COM server 6 2 6 Installation of the Virtual COM Port In order to communicate via the COM server it must be integrated into the network and a virtual COM port must be set up on a com puter 6 2 7 Network Integration Configuration For network integration you will need a free IP address for the COM server the subnet mask and the IP address for the gate way This information can be obtained from your administrator if necessary e Now please remove the product CD from the W amp T quick start instructions supplied and start this CD ROM on a computer in the same subnet as the COM server then please install the WuTility tool e Use the Scan button to search the local network for W amp T de vices If several devices are found please select the device to be configured on the basis of its Ethernet address This can be found on the sticker on the COM server and starts with EN 00c03dXXXXXXXXX e Select the required device and press the Assign IP address button Please enter the necessary parameters here e Save and
47. ontrast values Language Photovoltaics a Incoming Real time mains Acoustic Inverter signal generator COM interface AUX signals Fig 23 Menu tree Service password protected Password Blocking password protected Operating display Information From all menus the system automatically LI returns to the operating display after a certain period of time if no keys are pressed on the DOU 7 3 2 Main Menu Operating display Blocking Fault history Settings Information Mo 05 Jan 2009 07 00 Fig 24 Main menu Following start up the main menu is the highest menu level which means that you can open further submenus from here and you can always return to this level Page 43 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions The main menu has a typical menu structure Additional submenus are displayed on the left hand side All se lectable submenus are displayed in a frame A black background indicates the current cursor position The bottom line displays the current real time which can be adjusted using the Settings menu On the right hand side the current key function is represented as a symbol which is displayed in a small framed area You can navi gate using the lt and gt keys to select the required submenu Use the ENTER key to open the submenu You can use the key to call up the Help menu which pr
48. op bits e lt CR gt to save the settings The configuration is finished and the main menu is opened again e lt ESC gt to cancel the configuration This opens the main menu The Modbus factory setting is 192008 E 1 Page 34 of 51 80000027023 BAL en 6 2 COM Server 6 2 1 General Protect PV 250 Operating Instructions AEG Power Solutions The COM server makes the serial port of the PV inverter available via an Ethernet network A software application can communicate with the PV inverter via the network using a virtual COM port this needs to be installed on a server or a workstation The COM server is installed as standard and is used by the AEG service de partment for remote maintenance purposes An appropriate Ethernet network with an Internet connection and a fixed IP ad dress assignment is required here An assembly made by W amp T is used as the COM server It is an in dustrial version for 10 Mbit and 100 Mbit Ethernet networks The COM server is item A27 in the system s AC cabinet see Figure 4 6 2 2 Network Connection 6 2 3 COM Port 6 2 4 Power Supply This COM server has an IEEE 802 3 compatible network connec tion on a shielded RJ45 plug connector Its assignment corre sponds to that of an MDI interface which means the connection to the hub or switch is made using a 1 1 wired patch cable Ex works the COM server operates in an autonegotiation mode on the network side This means the data transmissio
49. operating panel with 5 keys The global unit status can be read from the 3 LEDs An acoustic signal generator stresses the urgency of critical system statuses The graphical LCD shows system statuses and measured values using symbols and plain text You can control and parameterise the unit using menus which are protected by a password The DOU is operated using 4 display keys to which alternating functions are assigned and one ENTER key The key functions that are currently active are shown on the LCD in the form of sym bols 1 2 3 4 Fig 21 DOU 1 LEDs Red yellow green from top to bottom 2 Graphical display LCD 3 4 general function keys 4 ENTER key Page 40 of 51 80000027023 BAL en 7 1 1 Signalling Protect PV 250 Operating Instructions AEG Power Solutions LEDs Red permanently ON Deactivating fault must be acknowledged via the menu Red flashing Self acknowledging deactivating fault Yellow flashing Self acknowledging messages Green OFF INV in sleep mode Green flashing 1 Hz INV waiting for feed conditions Green flashing 0 5 Hz INV feeding into mains with derating Green permanently ON INV feeding into mains Acoustic signal generator Signal generator ON Urgent messages and system fault 7 1 2 Keyboard Operation You can use the ENTER key to open and close submenus and to acknowledge control functions and parameters The 4 display keys are assigned to different functions Th
50. ovides descriptions for all the keyboard symbols that are available 7 3 3 Operating Display You can call up the Operating display from the main menu If the DOU has not been used for some time the system auto matically switches back to the operating display no matter which menu it is in The LCD background illumination is switched off if no further op erations are carried out and the system is not in an abnormal status In the event of a unit fault the background illumination re mains switched on until the fault is acknowledged If the inverter is in night mode the content of the LCD is cleared and Sleep mode is displayed instead The background illumination is also switched off You can reactivate the DOU by pressing any key Pkw Mo 10 0kt 2009 125 se Lins Her 69o402kWh P 102kW E 35ikWh Fig 25 Operating display Normal operation The Operating display consists of 3 parts The left hand side shows the current global unit status x Ber ese4d02k Wh Fig 26 Operating display Left hand side Page 44 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions At the top a sun symbol indicates the current solar radiation trend If the sun is black or a moon symbol is displayed the PV voltage is so low that the inverter is in its idle state An empty sun with no rays also indicates that the PV voltage is still too low with the inverter in standby mode The inverter
51. pse before insulation measurement can start Delay for shutdown of K21 in night operation Once sequence control has switched to the Night status see Chapter 4 1 6 this time must elapse before earthing is removed with contactor K21 Minimum time in maintenance mode If maintenance mode has been activated the earthing is discon nected and remains so for at least this time In the Operation status see Chapter 4 1 3 the inverter detects the maximum power point MPP of the PV cells The MPP tracker detects the point at which the solar cells give off maximum power This enables the system to achieve optimum efficiency Page 18 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 3 4 DY eo ooo Pee 26 Cell current in A Cell power in W Cell voltage in Y Fig 7 MPP performance curve 4 5 Partner Operation In partner operation the efficiency of a system with two inverters can be increased by connecting the two PV cells at less than full power If insolation levels fall the PV cells are connected and only one in verter is in operation If insolation levels rise the connection is terminated Now both in verters are in operation Each inverter is supplied with power by its associated PV cell 4 5 1 Linked Operation One inverter is switched on and is feeding power into the mains The other inverter is logically switched off The tie switch i
52. response from the slave e lt CR gt to save the settings The configuration is finished and the main menu is opened again e lt ESC gt to cancel the configuration This opens the main menu Page 33 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 6 1 4 3 Configuring Modbus Data Transmission To access the X5 data transmission configuration you must press lt 2 gt in the main menu T100 COM1 HyperTerminal x Datei Bearbeiten Ansicht Anrufen bertragung Dle 213 alal ei E aaa aaa aaa aa aa aa aaa aa aa aaa S A EG Power Solutions bal MultiCom CONFICGURATION V PPIMCZ22J D02 gt gt gt XS DATA TRANSMISSION lt lt lt l gt 1200Baud Z gt Z400Baud lt 3 gt 4800Baud lt 4 gt 3600Baud lt 5 gt 192Z00Baud lt 6 gt 38400Baud lt 7 gt 57600Baud lt n gt No parity lt e gt Even parity lt o gt Odd parity lt 8 gt lStopbit 9 gt ZStopbits lt m gt Modem lt CR gt Return ESC gt Cancel lt E Current settings 19200 8E1 ERA AERA AAA AAA A AEA AREA AEA A AEA AAA AREA AAR E Merbunden 00 11 42 W100 9600 8 N 1 RF GROS 7 Fig 19 Modbus JBus data transmission configuration Press one of the following keys in the X5 Data Transmission menu e lt 1 7 gt to set the baud rate e lt nh e 0 gt to set the parity e lt 8 9 gt to set the number of st
53. rom the PV inverter to the remote panel In a CAN bus network the ends of the bus must always be termi nated A 120R terminating resistor is pre installed at connector X4 of the CAN bus connection as standard Connect the line shield to the housing potential of the INV unit via shield terminal blocks Openings are provided in the plate of the PV inverter for installing the shield in the connection room area Remove approx 20 mm of the sheath at this point Page 30 of 51 80000027023 BAL en 6 1 4 Configuration Protect PV 250 Operating Instructions AEG Power Solutions Cable e lmi 12 I v 19 5 Fig 15 Shield connection The communication interface does not have to be configured in or der to connect the PV inverter to the data logger system of the AEG PV LoG Once the bus cable has been installed and the system has been powered up the configuration settings are made fully automatically If you are using a different in house monitoring system you can adjust the transmission parameters and the slave address of the Modbus interface to suit your requirements via port 1 X2 We would be happy to provide you with the Modbus unit profile on re quest 6 1 4 1 Configuration Preparations You will need a 1 1 data line and a PC To carry out the configuration you must now connect the PC to the MultiCom interface X2 with the data line and start
54. s no external communica tion via X2 and X5 Green flashes Data transmission on the serial interfaces X2 or X5 Red on Fault Description of serial interfaces Port 1 Serial interface X2 The potential free RS232 serial interface at connector X2 is equipped with the AEG specific CBSER protocol for parameter setting and monitoring purposes Special service tools can be used to monitor and manage the system locally and with the aid of the COM server remotely via a network This is also the port used for configuring the assembly s interfaces 5 1 o 9 6 Fig 12 Serial D sub connector X2 Port 1 X2 RS232 pin assignment PC receiving data from the MCC PC sending data to the MCC Interface reference potential Housing INV housing potential Please use a 1 1 data cable for configuration purposes Port 2 Serial interface X5 The potential free RS485 interface at connector X5 supports the Modbus protocol for integration into higher level monitoring sys tems 5 1 o 9 6 Fig 13 Serial D sub connector X5 Page 28 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions Port 2 X5 RS485 pin assignment default O e afiwe Housing INV housing potential Please use a shielded fieldbus cable as the line e g 2 x 0 22 twisted pair Lapp UNITRONIC BUS LD Please connect the RS485 bus line via the bus interface connector supplied In
55. s a result If the capacity utilisation of the two inverters falls below a certain value the system switches to linked operation The tie switch is closed and one inverter is switched off logically Linked operation is active Later in the evening Levels of insolation fall further Capacity utilisation drops as a re sult If capacity utilisation falls below a certain value sequence control on both inverters switches to the Night status Power stops being fed into the mains Linked operation is active Night Overnight a decision is made as to which inverter is to be active in linked operation the next day So that both inverters work at ap proximately the same capacity the inverters are operated alter nately 4 5 5 Partner Operation Parameters Load threshold for terminating the INV connection If capacity utilisation in linked operation rises above the parameter value the system switches to single operation Load threshold for connecting the INV If capacity utilisation in single operation falls below the parameter value the system switches to linked operation Page 21 of 51 80000027023 BAL en 5 5 1 Protect PV 250 Operating Instructions AEG Power Solutions Maximum DC voltage difference for connecting the INV When the system switches from single operation to linked opera tion the MPP trackers in both inverters are switched off and an at tempt is made to match the DC voltages The system only switc
56. s closed The inverter which is active in linked operation changes daily This operating mode is active when insolation levels are low Fig 8 Linked operation in partner operating mode Change of status to single operation If capacity utilisation in the inverter which is switched on rises above a certain value once a delay has elapsed the two inverters are switched to single operation First the inverter which is switched on is switched off Then the tie switch is opened Once the tie switch is open both inverters are switched on Change of status to linked operation in the event of a fault In the event of a deactivating or self acknowledging fault in the in verter which is switched on the two inverters are switched to linked operation The inverter which is switched off is switched on The faulty in verter is shut down due to the fault Page 19 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 4 5 2 Single Operation Both inverters are switched on and are feeding power into the mains The tie switch is open This operating mode is active when insolation levels are high Fig 9 Single operation in partner operating mode Change of status to linked operation If the capacity utilisation of the two inverters falls below a certain value once a delay has elapsed the system switches to linked operation The MPP tracker is switched off in both inverters and an attempt is made to r
57. s disconnector Q26 and load interrupter switch Q4 are pro vided for isolating the inverter in the event of unit faults or when maintenance needs to be performed on the unit CAUTION Potentially fatal voltages are present at the terminals on the Protect PV 250 The control unit is supplied with power from the AC mains or op tionally from a second AC mains DC PV modules Display qo f Control unit power supply Control unit ksr AC Incoming mains Fig 2 Functional principle of the Protect PV 250 for connection to a medium voltage mains Page 6 of 51 80000027023 BAL en 1 2 Protect PV 250 Operating Instructions Operating Elements Fig 3 i Arrangement of the operating elements on the doors AEG Power Solutions Item Designation Display and operation unit DOU Emergency off Q26 mains disconnector PV 250 DC panel DCD INV cabinet INV Q wW gt w AC panel ACD Page 7 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 1 3 View of the Cabinet
58. s to the Operation status An attempt to start up is made which involves switching on the inverter stack If the DC voltage collapses too dramatically during this start up attempt the stack is switched off again and there is a delay until the next start up attempt is made The unit will not switch to the Operation status until a start up attempt during which the DC voltage does not dip too significantly If the DC voltage falls below a certain value for a certain time the unit switches to the Night status If a deactivating or self acknowledging fault is triggered the unit switches to the Fault status The status can be switched from Waiting for feed conditions to OFF using the Off control command 4 1 3 The Operation Status The Protect PV 250 has met all conditions for operation and no deactivating or self acknowledging faults are present The monitoring systems are activated In this status power is fed into the mains and the inverter output contactor K7 is closed Possible change of status If the generated power falls below a certain value for a certain time the operating conditions are no longer met The unit then switches to the Waiting status If a deactivating or self acknowledging fault is triggered the unit switches to the Fault status The status can be switched from Operation to OFF using the Off control command 4 1 4 The Waiting Status If the power fed in falls below a certain v
59. t be within certain limits Page 12 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions If the DC voltage continues to increase due to the sun s rays get ting stronger and the mains voltage and mains frequency are within acceptable limits a start up attempt is made During a start up attempt the inverter stack is switched on thereby drawing power from the DC voltage that is present The inverter output con tactor is open during a start up attempt If the load on the DC volt age causes it to collapse too dramatically during this start up at tempt the stack is switched off again and there is a delay until the next start up attempt is made If the DC voltage does not dip too significantly the inverter output contactor closes and power is fed into the mains The inverter is now in the Operation status Day During the course of the day the inverter will remain in the Opera tion status if the sun s rays are strong enough and no faults occur Power is fed into the mains and the inverter output contactor K7 is closed Evening As the sun goes down the power fed into the mains decreases If this power falls below a certain value for a certain time the operat ing conditions are no longer met The inverter stack is switched off the inverter output contactor K7 opens and the unit switches to the Waiting status Once the Waiting status delay has elapsed the unit switches back to Waiting for
60. us slave address 01 99 variable 01 default Communication data port 3 X4 Protocol Proprietary CAN bus Transmission rate 50 kbaud Page 26 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions 6 1 3 Structure of the MultiCom CCC Interface RS485 RS232 wn l le e x2 L T Modbus Configuration Fig 11 MultiCom CCC interface as a Modbus interface top view Connections X1 Internal inverter bus and power supply X2 Potential free RS232 serial interface X3 Triggering of remote signalling X4 A remote panel can be connected to this potential free CAN interface X5 Potential free RS485 RS232 serial interface Configuration jumpers J1 1 2 firmware update 2 3 default J4 All closed RS485 default J5 All closed RS232 The transmission topology of the Modbus interface connector X5 is set with the two configuration jumper blocks J4 J5 The factory setting is R8485 In order to be able to use the Modbus interface as a point to point connection via RS232 you must remove all jumpers from block J4 and plug them in on block J5 Button S1 Button for initiating the configuration via connector X2 Page 27 of 51 80000027023 BAL en Protect PV 250 Operating Instructions AEG Power Solutions LED signals Green red flashes Configuration can be selected via the ter minal up to 30 seconds after restarting Green on Operating statu

Protect PV.250 Operating Instructions

Contents

Download Pdf Manuals

Related Search

Related Contents