Connection and configuration of a CDP with Fronius MB inverters

Transcription

1 Connection and configuration of a CDP with Fronius MB inverters APPLICATION NOTES (M028E A)

2 2 Application notes CDP

3 SAFETY PRECAUTIONS Follow the warnings described in this manual with the symbols shown below. DANGER Warns of a risk, which could result in personal injury or material damage. ATTENTION Indicates that special attention should be paid to a specific point. If you must handle the unit for its installation, start-up or maintenance, the following should be taken into consideration: Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the unit. In particular, handling with voltage applied may result in electric shock, which may cause death or serious injury to personnel. Defective installation or maintenance may also lead to the risk of fire. Carefully read the manual prior to connecting the unit. Follow all installation and maintenance instructions throughout the unit's working life. Pay special attention to the installation standards of the National Electrical Code. Consult the instruction manual before using the unit In this manual, if the instructions marked with this symbol are not respected or followed correctly, it can result in injury or damage to the unit and /or installations. CIRCUTOR, SA reserves the right to modify features or the product manual without prior notification. DISCLAIMER CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set out in this instruction manual without prior notice. CIRCUTOR, SA, on its web site, supplies its customers with the latest versions of the device specifications and the most updated manuals. Application notes 3

4 CONTENTS SAFETY PRECAUTIONS... 3 DISCLAIMER... 3 CONTENTS... 4 LOG OF REVISIONS INTRODUCTION FRONIUS GALVO INVERTER WITH DATA MANAGER BOX COMMUNICATION CABLE INVERTER CONNECTION CONNECTION OF SEVERAL INVERTERS INVERTER COMMUNICATION CONFIGURATION PERIPHERAL NUMBER CONFIGURATION PROTOCOL TYPE CONFIGURATION FRONIUS IG PLUS INVERTER WITH MODBUS CARD COMMUNICATION CABLE INVERTER CONNECTION CONNECTION OF SEVERAL INVERTERS INVERTER COMMUNICATION CONFIGURATION FRONIUS SYMO INVERTER WITH DATA MANAGER BOX COMMUNICATION CABLE INVERTER CONNECTION CONNECTION OF SEVERAL INVERTERS INVERTER COMMUNICATION CONFIGURATION PERIPHERAL NUMBER CONFIGURATION PROTOCOL TYPE CONFIGURATION FRONIUS ECO INVERTER WITH DATA MANAGER BOX COMMUNICATION CABLE INVERTER CONNECTION CONNECTION OF SEVERAL INVERTERS INVERTER COMMUNICATION CONFIGURATION PERIPHERAL NUMBER CONFIGURATION PROTOCOL TYPE CONFIGURATION FRONIUS PRIMO INVERTER WITH DATA MANAGER BOX COMMUNICATION CABLE INVERTER CONNECTION CONNECTION OF SEVERAL INVERTERS INVERTER COMMUNICATION CONFIGURATION PERIPHERAL NUMBER CONFIGURATION Application notes

5 6.2.2 PROTOCOL TYPE CONFIGURATION CDP CONFIGURATION COMMUNICATIONS TEST AND REGULATION COMMUNICATIONS TEST REGULATION TEST MAINTENANCE AND TECHNICAL SERVICE GUARANTEE Application notes 5

6 LOG OF REVISIONS Table 1: Log of revisions. Date Revision Description 03/15 M028E A Original version 09/15 M028E B Changes in the following sections: /15 M028E C Changes in the following sections: /15 M028E D Changes in the following sections: /16 M028E A Changes in the following sections: NB: The images of the units are solely for the purpose of illustration and may differ from the original unit. 6 Application notes

7 1.- INTRODUCTION Fronius offers several inverter models that can be managed via the CDP Dynamic power controller. For the CDP controller to be able to correctly manage the inverter, communication between the two devices must be correct and both products must be correctly programmed. These application notes are not meant as a substitute for the CDP or inverter manuals, but rather as additional support for individuals who need to interconnect the two devices. However, the guides and manuals of each product are the documents to be consulted and each company will provide the respective technical assistance. In these application notes, we will work with five different Fronius models: 1. Fronius Galvo with Data Manager Box 2.0 (single-phase) 2. Fronius IG Plus with MODBUS CARD (single-phase or three-phase) 3. Fronius Symo with Data Manager Box 2.0 (three-phase) 4. Fronius ECO with Data Manager Box 2.0 (three-phase) 5. Fronius Primo with Data Manager Box 2.0 (single-phase) The CDP stores the nominal power value of the inverter to be controlled in its configuration and periodically sends the inverter the percentage of said power to be generated. Consequently, when the CDP communicates with the Fronius inverter it is constantly sending it a regulation percentage. Some models do not accept a regulation that is less than 10% of the nominal power, and thus if consumption is below this threshold the inverter will not inject any power into the mains even during periods of maximum insolation. Consequently, it is advisable to consult this data in the inverter manual in order to clarify any doubts. Application notes 7

8 2.- FRONIUS GALVO INVERTER WITH DATA MANAGER BOX 2.0 To make the connection between the CDP and the inverter the communications card DM 1.0 must be removed of the inverter. Check, if necessary, with the manufacturer's manual for proper operation. Figure 1: Communications card DM 1.0. Communication between the CDP and the inverter is via the Data Manager 2.0 Box Fronius via an RS-485 bus. NB: This connection is as well valid for inverters with Data Manager 2.0 Card integrated COMMUNICATION CABLE List of communication cable terminals between the CDP and the Data Manager Box 2.0 (DMB 2.0): Table 2: List of communication cable terminals. CDP R2 channel communications connector DMB 2.0 OUT connector (RJ45) Terminal Description Terminal 1 TxD+ D+ 3 TxD - D- The DMB 2.0 has a final switch bus for communications between CDP and DMB 2.0 which is located on the bottom of the antenna WLAN that must be on ON position as shown in the Figure 2. 8 Application notes

9 INVERTER CONNECTION Figure 2: Final switch bus position. Figure 3 shows the connection between the CDP and a single inverter. The communication cable must be connected from the OUT terminal of the DMB 2.0 to the IN terminal of the inverter. The terminal IN of the DMB 2.0 must have connecteted the end bus terminal. Figure 3: Connection between a CDP and a single Fronius Galvo inverter CONNECTION OF SEVERAL INVERTERS Figure 4 shows the connection between the CDP and several inverters. Figure 4: Connection between a CDP and several Fronius Galvo inverters. Application notes 9

10 If there are several inverters, the communication cable connecting them must go from the OUT terminal of the first inverter to the IN terminal of the next inverter. The same holds for the remaining inverters until the last one is reached, which must always have the bus end terminal on the "OUT" connector. The communication cable between the inverters is a pin-to-pin cable with RJ45 connectors on both ends. This type of cable can be purchased at any computer supply store as it is a common connector used for PCs and other devices with an Ethernet port. The bus end terminal must always be connected to the last inverter of the bus. This terminal is an RJ45 connector that must always be connected to the OUT terminal of the inverter. Table 3: Bus end terminal Connector PIN RJ45 Description of the signal Description of the connection 1 Power supply 2 GND 3 and 4 RxD+ / TxD+ Cross cables 3 and 4 5 and 6 TxD- / RxD- Cross cables 5 and 6 7 GND 8 Power supply INVERTER COMMUNICATION CONFIGURATION The following describes how to use the display to configure the inverter for ensuring correct communication with the CDP. The AC side of the inverter must be connected to the mains before it can turn on. Consult the inverter manual if you have any doubts. The parameters to be configured are: Peripheral number Protocol type PERIPHERAL NUMBER CONFIGURATION. Go to the following path to change the peripheral number of the inverter: Config DATCOM Inverter number Figure 5: Access to the setup menu. 10 Application notes

11 Press + and - to increase or lower the value. Press the button to move through the digits and to confirm the programmed value If there is only 1 inverter, the peripheral number must be 01 (the default value is 01). If there are several inverters in cascade, which can either be single-phase connected to the same phase or three-phase connected to the same threephase AC mains (all connected to the same phase), they must have consecutive numbers from 01. If there are multiple sets of 3 single-phase inverters connected to a threephase network, with each occupying one phase, the configuration must be as follows: - Inverters connected to phase 1: peripheral number between Inverters connected to phase 2: peripheral number between Inverters connected to phase 3: peripheral number between PROTOCOL TYPE CONFIGURATION For correct communication between the CDP and the inverter, the inverter must be set up with the SOLAR NET protocol. Go to the following path to change the protocol of the inverter: Config DATCOM Protocol type 1. Use the arrows to move until the SOLAR NET text appears. 2. Confirm the selection with the button, and the SOLAR NET text will flash. 3. Press the button again to validate the selection. Enter the following menu path to ensure correct inverter programming: Config DATCOM DATCOM Status The display will show the following parameters: Status: Solar Net Baudrate: 9600 OkCnt: 0 (1) ErCnt: 0 (2) (1) Indicates the frames sent correctly between the CDP and the inverter. (2) Indicates the frames sent incorrectly between the CDP and the inverter. Application notes 11

12 3.- FRONIUS IG PLUS INVERTER WITH MODBUS CARD The CDP and the inverter communicate via an RS-422 bus. This RS-422 bus can connect up to 100 inverters, although the number of inverters in the vast majority of domestic installations ranges from 1 to 3. For data communication between inverters, each inverter must have a Com Card communications card installed (this card is ordered as optional for the inverters) COMMUNICATION CABLE List of communication cable terminals between the CDP and the inverter: CDP R2 channel communications connector Table 4: List of communication cable terminals. INVERTER Conector OUT (RJ45) Terminal Description Terminal Description 1 TxD+ 3 RxD+ 4 RxD+ 4 TxD+ 2 RxD - 5 TxD- 3 TxD - 6 RxD INVERTER CONNECTION Figure 6 shows the connection between the CDP and a single inverter. The communication cable must be connected to the inverter "OUT" terminal and the bus end terminal must be connected to the "IN" terminal. Figure 6: Connection between a CDP and a single Fronius IG Plus inverter. 12 Application notes

13 CONNECTION OF SEVERAL INVERTERS Figure 7 shows the connection between the CDP and several inverters. Figure 7: Connection between a CDP and several Fronius IG Plus inverters. If there are several inverters, the communication cable connecting them must go from the IN terminal of the first inverter to the OUT terminal of the next inverter. The same holds for the remaining inverters until the last one is reached, which must always have the bus end terminal on the "IN" connector. The communication cable between the inverters is a pin-to-pin cable with RJ45 connectors on both ends. This type of cable can be purchased at any computer supply store as it is a common connector used for PCs and other devices with an Ethernet port. The bus end terminal must always be connected to the last inverter of the RS- 422 communication bus. This terminal is an RJ45 connector that must always be connected to the IN terminal of the inverter. Table 5: Bus end terminal Connector PIN RJ45 Description of the signal Description of the connection 1 Power supply 2 GND 3 and 4 RxD+ / TxD+ Cross cables 3 and 4 5 and 6 TxD- / RxD- Cross cables 5 and 6 7 GND 8 Power supply Application notes 13

14 3.2.- INVERTER COMMUNICATION CONFIGURATION Three parameters need to be changed in this type of inverter in order to obtain correct communication between the CDP and the inverter. Table 6: Configuration parameters for communication with the CDP. Description Value for communication with the CDP Peripheral number 00 Communications protocol DAT_COM Communication speed 9600 If there are several inverters in cascade, which can either be single-phase connected to the same phase or three-phase connected to the same threephase AC mains (all connected to the same phase), they must have consecutive numbers from 01. If there are multiple sets of 3 single-phase inverters connected to a threephase network, with each occupying one phase, the configuration must be as follows: - Inverters connected to phase 1: peripheral number between Inverters connected to phase 2: peripheral number between Inverters connected to phase 3: peripheral number between Part of the 42_0410_1564_168027_snapshot.pdf Fronius document is shown below, in which the configuration process is explained. (Documentation taken with the authorisation of Fronius). 14 Application notes

15 Application notes 15

16 16 Application notes CDP

17 Application notes 17

18 18 Application notes CDP

19 Application notes 19

20 4.- FRONIUS SYMO INVERTER WITH DATA MANAGER BOX 2.0 The CDP and the inverter communicate via via the Data Manager 2.0 Box Fronius via an RS-485 bus COMMUNICATION CABLE List of communication cable terminals between the CDP and the Data Manager Box 2.0 (DMB 2.0): Table 7: List of communication cable terminals. CDP R2 channel communications connector DMB 2.0 OUT connector (RJ45) Terminal Description Terminal 1 TxD+ D+ 3 TxD - D- The DMB 2.0 has a final switch bus for communications between CDP and DMB 2.0 which is located on the bottom of the antenna WLAN that must be on ON position as shown in the Figure INVERTER CONNECTION Figure 8: Final switch bus position. Figure 9 shows the connection between the CDP and a single inverter. The communication cable between the DMB 2.0 and the inverter, must be connected from the OUT terminal of the DMB 2.0 to the IN terminal of the inverter. The terminal IN of the DMB 2.0 must have connecteted the end bus terminal. 20 Application notes

21 Figure 9: Connection between a CDP and a single Fronius Symo inverter CONNECTION OF SEVERAL INVERTERS Figure 10 shows the connection between the CDP and several inverters. Figure 10: Connection between a CDP and several Fronius Symo inverters. If there are several inverters, the communication cable connecting them must go from the IN terminal of the first inverter to the OUT terminal of the next inverter. The same holds for the remaining inverters until the last one is reached, which must always have the bus end terminal on the "IN" connector. The communication cable between the inverters is a pin-to-pin cable with RJ45 connectors on both ends. This type of cable can be purchased at any computer supply store as it is a common connector used for PCs and other devices with an Ethernet port. The bus end terminal must always be connected to the last inverter of the bus. This terminal is an RJ45 connector that must always be connected to the IN terminal of the inverter. Table 8: Bus end terminal Connector PIN RJ45 Description of the signal Description of the connection 1 Power supply 2 GND 3 and 4 RxD+ / TxD+ Cross cables 3 and 4 5 and 6 TxD- / RxD- Cross cables 5 and 6 7 GND 8 Power supply Application notes 21

22 4.2.- INVERTER COMMUNICATION CONFIGURATION The following describes how to use the display to configure the inverter for ensuring correct communication with the CDP. The AC side of the inverter must be connected to the mains before it can turn on. Consult the inverter manual if you have any doubts. The parameters to be configured are: Peripheral number Protocol type PERIPHERAL NUMBER CONFIGURATION Go to the following path to change the peripheral number of the inverter: Config DATCOM Inverter number Figure 11: Access to the setup menu. Press + and - to increase or lower the value. Press the button to move through the digits and to confirm the programmed value. If there is only 1 inverter, the peripheral number must be 01 (the default value is 01). If there are several inverters in cascade, which can either be single-phase connected to the same phase or three-phase connected to the same threephase AC mains (all connected to the same phase), they must have consecutive numbers from PROTOCOL TYPE CONFIGURATION For correct communication between the CDP and the inverter, the inverter must be set up with the SOLAR NET protocol. Go to the following path to change the protocol of the inverter: Config DATCOM Protocol type 1. Use the arrows to move until the SOLAR NET text appears. 2. Confirm the selection with the button, and the SOLAR NET text will flash. 3. Press the button again to validate the selection. 22 Application notes

23 Enter the following menu path to ensure correct inverter programming: Config DATCOM DATCOM Status The display will show the following parameters: Status: Interface Baudrate: 9600 OkCnt: 0 (3) ErCnt: 0 (4) (3) Indicates the frames sent correctly between the CDP and the inverter. (4) Indicates the frames sent incorrectly between the CDP and the inverter. The inverter automatically detects the communication speed. If it does not detect it, try turning the inverter off and reconnecting it. Application notes 23

24 5.- FRONIUS ECO INVERTER WITH DATA MANAGER BOX 2.0 The CDP and the inverter communicate via via the Data Manager 2.0 Box Fronius via an RS-485 bus COMMUNICATION CABLE List of communication cable terminals between the CDP and the Data Manager Box 2.0 (DMB 2.0): Table 9: List of communication cable terminals. CDP R2 channel communications connector DMB 2.0 OUT connector (RJ45) Terminal Description Terminal 1 TxD+ D+ 3 TxD - D- The DMB 2.0 has a final switch bus for communications between CDP and DMB 2.0 which is located on the bottom of the antenna WLAN that must be on ON position as shown in the Figure INVERTER CONNECTION Figure 12: Final switch bus position. Figure 13 shows the connection between the CDP and a single inverter. The communication cable between the DMB 2.0 and the inverter, must be connected from the OUT terminal of the DMB 2.0 to the IN terminal of the inverter. The terminal IN of the DMB 2.0 must have connecteted the end bus terminal. 24 Application notes

25 Figure 13: Connection between a CDP and a single Fronius ECO inverter CONNECTION OF SEVERAL INVERTERS Figure 14 shows the connection between the CDP and several inverters. Figure 14: Connection between a CDP and several Fronius ECO inverters. If there are several inverters, the communication cable connecting them must go from the IN terminal of the first inverter to the OUT terminal of the next inverter. The same holds for the remaining inverters until the last one is reached, which must always have the bus end terminal on the "IN" connector. The communication cable between the inverters is a pin-to-pin cable with RJ45 connectors on both ends. This type of cable can be purchased at any computer supply store as it is a common connector used for PCs and other devices with an Ethernet port. The bus end terminal must always be connected to the last inverter of the bus. This terminal is an RJ45 connector that must always be connected to the IN terminal of the inverter. Table 10: Bus end terminal Connector PIN RJ45 Description of the signal Description of the connection 1 Power supply 2 GND 3 and 4 RxD+ / TxD+ Cross cables 3 and 4 5 and 6 TxD- / RxD- Cross cables 5 and 6 7 GND 8 Power supply Application notes 25

26 5.2.- INVERTER COMMUNICATION CONFIGURATION The following describes how to use the display to configure the inverter for ensuring correct communication with the CDP. The AC side of the inverter must be connected to the mains before it can turn on. Consult the inverter manual if you have any doubts. The parameters to be configured are: Peripheral number Protocol type PERIPHERAL NUMBER CONFIGURATION Go to the following path to change the peripheral number of the inverter: Config DATCOM Inverter number Figure 15: Access to the setup menu. Press + and - to increase or lower the value. Press the button to move through the digits and to confirm the programmed value. If there is only 1 inverter, the peripheral number must be 01 (the default value is 01). If there are several inverters in cascade, which can either be single-phase connected to the same phase or three-phase connected to the same threephase AC mains (all connected to the same phase), they must have consecutive numbers from PROTOCOL TYPE CONFIGURATION For correct communication between the CDP and the inverter, the inverter must be set up with the SOLAR NET protocol. Go to the following path to change the protocol of the inverter: Config DATCOM Protocol type 1. Use the arrows to move until the SOLAR NET text appears. 2. Confirm the selection with the button, and the SOLAR NET text will flash. 3. Press the button again to validate the selection. 26 Application notes

27 Enter the following menu path to ensure correct inverter programming: Config DATCOM DATCOM Status The display will show the following parameters: Status: Solar net Baudrate: 9600 OkCnt: 0 (3) ErCnt: 0 (4) (3) Indicates the frames sent correctly between the CDP and the inverter. (4) Indicates the frames sent incorrectly between the CDP and the inverter. The inverter automatically detects the communication speed. If it does not detect it, try turning the inverter off and reconnecting it. Application notes 27

28 6.- FRONIUS PRIMO INVERTER WITH DATA MANAGER BOX 2.0 To make the connection between the CDP and the inverter the communications card DM 1.0 must be removed of the inverter. Check, if necessary, with the manufacturer's manual for proper operation. Figure 16: Communications card DM 1.0. Communication between the CDP and the inverter is via the Data Manager 2.0 Box Fronius via an RS-485 bus. NB: This connection is as well valid for inverters with Data Manager 2.0 Card integrated COMMUNICATION CABLE List of communication cable terminals between the CDP and the Data Manager Box 2.0 (DMB 2.0): Table 11: List of communication cable terminals. CDP R2 channel communications connector DMB 2.0 OUT connector (RJ45) Terminal Description Terminal 1 TxD+ D+ 3 TxD - D- The DMB 2.0 has a final switch bus for communications between CDP and DMB 2.0 which is located on the bottom of the antenna WLAN that must be on ON position as shown in the Figure Application notes

29 INVERTER CONNECTION Figure 17: Final switch bus position. Figure 18 shows the connection between the CDP and a single inverter. The communication cable must be connected from the OUT terminal of the DMB 2.0 to the IN terminal of the inverter. The terminal IN of the DMB 2.0 must have connecteted the end bus terminal. Figure 18: Connection between a CDP and a single Fronius PRIMO inverter CONNECTION OF SEVERAL INVERTERS Figure 19 shows the connection between the CDP and several inverters. Figure 19: Connection between a CDP and several Fronius PRIMO inverters. If there are several inverters, the communication cable connecting them must go from the OUT terminal of the first inverter to the IN terminal of the next Application notes 29

30 inverter. The same holds for the remaining inverters until the last one is reached, which must always have the bus end terminal on the "OUT" connector. The communication cable between the inverters is a pin-to-pin cable with RJ45 connectors on both ends. This type of cable can be purchased at any computer supply store as it is a common connector used for PCs and other devices with an Ethernet port. The bus end terminal must always be connected to the last inverter of the bus. This terminal is an RJ45 connector that must always be connected to the OUT terminal of the inverter. Table 12: Bus end terminal Connector PIN RJ45 Description of the signal Description of the connection 1 Power supply 2 GND 3 and 4 RxD+ / TxD+ Cross cables 3 and 4 5 and 6 TxD- / RxD- Cross cables 5 and 6 7 GND 8 Power supply INVERTER COMMUNICATION CONFIGURATION The following describes how to use the display to configure the inverter for ensuring correct communication with the CDP. The AC side of the inverter must be connected to the mains before it can turn on. Consult the inverter manual if you have any doubts. The parameters to be configured are: Peripheral number Protocol type PERIPHERAL NUMBER CONFIGURATION. Go to the following path to change the peripheral number of the inverter: Config DATCOM Inverter number Figure 20: Access to the setup menu. Press + and - to increase or lower the value. Press the button to move through the digits and to confirm the programmed value 30 Application notes

31 If there is only 1 inverter, the peripheral number must be 01 (the default value is 01). If there are several inverters in cascade, which can either be single-phase connected to the same phase or three-phase connected to the same threephase AC mains (all connected to the same phase), they must have consecutive numbers from 01. If there are multiple sets of 3 single-phase inverters connected to a threephase network, with each occupying one phase, the configuration must be as follows: - Inverters connected to phase 1: peripheral number between Inverters connected to phase 2: peripheral number between Inverters connected to phase 3: peripheral number between PROTOCOL TYPE CONFIGURATION For correct communication between the CDP and the inverter, the inverter must be set up with the SOLAR NET protocol. Go to the following path to change the protocol of the inverter: Config DATCOM Protocol type 1. Use the arrows to move until the SOLAR NET text appears. 2. Confirm the selection with the button, and the SOLAR NET text will flash. 3. Press the button again to validate the selection. Enter the following menu path to ensure correct inverter programming: Config DATCOM DATCOM Status The display will show the following parameters: Status: Solar Net Baudrate: 9600 OkCnt: 0 (1) ErCnt: 0 (2) (1) Indicates the frames sent correctly between the CDP and the inverter. (2) Indicates the frames sent incorrectly between the CDP and the inverter. Application notes 31

32 7.- CDP CONFIGURATION The CDP has a configuration web site where all the parameters of the connected inverter have to be entered. To do so, enter "/setup" at the end of the navigation bar where the CDP is monitoring so that the following, for example, appears in the navigation bar: /setup The CDP configuration window will then open ( Figure 21). Figure 21: CDP configuration web site: 32 Application notes

33 The most important inverter parameters that have to be configured in the CDP are (Table 13): Table 13: Parameters to be configured in the CDP. Parameter Inverter type Inverter power Number of inverters Phase Description Inverter model, in this case selecting: Fronius MB Total power to be controlled by the CDP. Number of inverters to control. Inverter connection architecture Consult the manual for more information on how to configure the CDP. When working with several three-phase inverters in cascade, the sum of the power of all the inverters must be programmed in the Inverter Power variable in the CDP so that the same regulation percentage is sent to each one. When working with single-phase inverters in three-phase installations, the total power of all the inverters must be programmed by selecting the "three single phases" option in the "Phase" variable, and then entering the number of sets of three single-phase inverters in the installation in the "Number of inverters" variable. Example: if, for example, there are six 2 kw single-phase inverters (two on the L1 phase, two on the L2 phase and two on the L3 phase) the following configuration should be entered: Inverter power: W Number of inverters: 2 Phase: three single phases However, if there are three 2 kw single-phase inverters (one inverter per phase) the following configuration should be entered: Inverter power: 6000 W Number of inverters: 1 Phase: three single phases Application notes 33

34 8.- COMMUNICATIONS TEST AND REGULATION COMMUNICATIONS TEST Check the communication between the inverter and the CDP, with LED COM1 of the CDP: A flashing (or steady) LED means communication has been correctly established. The flashing rate is one flash per second (if there is one inverter) and 1/n if there are several inverters (where "n" is the number of inverters connected). If the COM1 LED is off, it means the CDP is not communicating with the inverter. In this case check the communication cables and the inverter communication configuration. With the configuration web site, we can make sure the CDP communicates correctly with the inverters connected to it. Press the Show system status button. When this button is pressed, the CDP will scan the connected inverters and indicate how many of the total number of inverters that the CDP has been assigned to control have been detected. If the communication is correct, the following image will appear, Figure 22 : Figure 22: Verification of communications between the CDP and inverter. 34 Application notes

35 8.2.- REGULATION TEST To ensure that the CDP is regulating correctly, the following test can be performed: Let us suppose a 3000W inverter generating 1400W. This value can be displayed on the inverter. If we now program the CDP indicating that the inverter power is 6000W, the CDP will send the inverter a new setpoint to change its MPPT and the inverter will reduce the photovoltaic generation by 50% and generate 700W. Do not forget to reprogram the CDP with the initial inverter power value after the test. Application notes 35

36 9.- MAINTENANCE AND TECHNICAL SERVICE In the case of any query in relation to unit operation or malfunction, please contact the CIRCUTOR, SA Technical Assistance Service. Technical Assistance Service Vial Sant Jordi, s/n Viladecavalls (Barcelona) Tel.: (Spain) / (outside of Spain) sat@circutor.es 10.- GUARANTEE CIRCUTOR guarantees its products against any manufacturing defect for two years after the delivery of the unit. CIRCUTOR will repair or replace any defective factory product returned during the guarantee period. No returns will be accepted and no unit will be repaired or replaced if it is not accompanied by a report indicating the defect detected or the reason for the return. The guarantee will be void if the unit has been improperly used or the storage, installation and maintenance instructions listed in this manual have not been followed. "Improper usage" is defined as any operating or storage condition contrary to the National Electrical Code or that surpassing the limits indicated in the technical and environmental features of this manual. CIRCUTOR accepts no liability due to the possible damage to the unit or other parts of the installation, nor will it cover any possible sanctions derived from a possible failure, improper installation or "improper usage" of the unit. Consequently, this guarantee does not apply to failures occurring in the following cases: - Overvoltages and/or electrical disturbances in the supply; - Water, if the product does not have the appropriate IP classification; - Poor ventilation and/or excessive temperatures; - Improper installation and/or lack of maintenance; - Buyer repairs or modifications without the manufacturer's authorisation. 36 Application notes

37 CIRCUTOR, SA Vial Sant Jordi, s/n Viladecavalls (Barcelona) Tel.: (+34) Fax: (+34) central@circutor.es