CDP-0, CDP-G, CDP-DUO INSTRUCTION MANUAL (M B)

Transcription

1 Dynamic power control -0, -G, -DUO INSTRUCTION MANUAL (M B)

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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 specifi c 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 voltages 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 fi re. Read the manual carefully 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. Refer to the instruction manual before using the unit In this manual, if the instructions marked with this symbol are not respected or carried out 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 notifi cation. DISCLAIMER CIRCUTOR, SA reserves the right to make modifi cations to the device or the unit specifi cations 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 specifi cations and the most updated manuals. 3

4 CONTENTS SAFETY PRECAUTIONS...3 DISCLAIMER...3 CONTENTS...4 REVISION LOG...6 SYMBOLS VERIFICATION UPON RECEIPT PRODUCT DESCRIPTION INSTALLATION OF THE DEVICE PRELIMINARY RECOMMENDATIONS INSTALLATION DEVICE TERMINALS MODEL G AND -DUO MODELS CONNECTION DIAGRAMS SINGLE-PHASE CONNECTION SCHEME WITH MC3 TRANSFORMERS SINGLE-PHASE CONNECTION SCHEME WITH MC1 TRANSFORMERS THREE-PHASE CONNECTION SCHEME WITH MC3 TRANSFORMERS THREE-PHASE CONNECTION SCHEME WITH MC1 TRANSFORMERS COMMUNICATIONS CONNECTION OPERATION OPERATING PRINCIPLE MEASUREMENT SYSTEM GRID INJECTION PROTECTION RELAY G MODEL : MANAGEMENT OF NON-CRITICAL LOADS DUO MODEL: NETWORK TYPE IDENTIFICATION APPLICATIONS SINGLE-PHASE CONNECTION BASIC THREE-PHASE CONNECTION THREE-PHASE CONNECTION WITH MONITORING KEYBOARD LEDs DISPLAY DISPLAY SINGLE-PHASE MODE THREE-PHASE MODE BASIC THREE-PHASE CONNECTION THREE-PHASE CONNECTION WITH MONITORING DISPLAY MENU : MEASURES DISPLAY WEBSIDE MODEL G MODEL DUO MODEL DATA LOGGER CONFIGURATION CONFIGURATION MENU: NETWORK DHCP ASSIGNMENT NETMASK Y GATEWAY PRIMARY Y SECONDARY DNS CONFIGURATION MENU: SYSTEM DATE AND TIME CONFIGURATION WEBSIDE GENERAL PARAMETERS POWER CONTROL & DATA LOGGER : INVERTER POWER CONTROL & DATA LOGGER : CONTROL POWER CONTROL & DATA LOGGER : REVERSE CURRENT RELAY POWER CONTROL & DATA LOGGER : AUXILIAR LOADS RELAYS POWER CONTROL & DATA LOGGER : DATA LOGGER ANALYZERS SETUP : LOAD ANALYZER ANALYZERS SETUP : GRID ANALYZER

5 ANALYZERS SETUP : PV ANALYZER ANALYZERS SETUP : COMUNICATIONS NETWORK & SECURITY SETUP : NETWORK NETWORK & SECURITY SETUP : SECURITY SAVE SETUP, LOAD DEFAULT SETUP y RESET G MODEL : OPERATING EXAMPLES SINGLE-PHASE INSTALLATION WITH 1 LOAD TO BE CONNECTED SINGLE-PHASE INSTALLATION WITH 3 LOADS TO BE CONNECTED MODBUS MAP MEASURE PARAMETERS POWER AND REGULATION PERCENTAGE ENERGÍA, TENSIÓN Y CORRIENTE PARAMETERS MEASURED IN THE LOAD PARAMETERS MEASURED IN THE GRID PHOTOVOLTAIC PARAMETERS DEVICE INFORMATION CONFIGURATION PARAMETERS STATE OF RELAYS OTHER PARAMETERS TECHNICAL FEATURES TECHNICAL SERVICE GUARANTEE CE CERTIFICATE UNE IN CERTIFICATE

6 REVISION LOG Table 1: Revision log Date Revision Description 06/13 M A Original version 07/14 M A General revision 09/14 M B Introduction model -G 01/15 M A 02/17 M A 09/17 M B Changes in the following sections: Appendix A Changes in the following sections: Changes in the following sections: SYMBOLS Symbols Table 2: Symbols. Description Compliant with the relevant European standards. Corriente continua. ~ Corriente alterna. Note : Device images are for illustrative purposes only and may differ from the actual device. 6

7 1.- VERIFICATION UPON RECEIPT Check the following points when you receive the device: a) The device meets the specifications described in your order. b) The device has not suffered any damage during transport. c) Perform an external visual inspection of the unit prior to switching it on. d) Check that it has been delivered with the following: - An installation guide. If any problem is noticed upon reception, immediately contact the transport company and/or CIRCUTOR s after-sales service. 2.- PRODUCT DESCRIPTION devices are a family of dynamic power controllers that shift the operating point of the solar field, enabling regulation of the inverter s generation level based on user consumption. The device features: - 1 Ethernet communications channel for Online monitoring from any PC or mobile device with a web browser character, 2-line display for viewing all the electric variables measured by the device. - 6 indicator LEDs indicating the communications and alarm status in real time. - 4 keys to browse the menu. The -G model can manage up to 3 non-critical loads. 7

8 3.- INSTALLATION OF THE DEVICE PRELIMINARY RECOMMENDATIONS The device must only be installed and maintained by authorised and qualified personnel. In order to use the device safely, it is critical that individuals who handle it follow the safety measures set out in the standards of the country where it is being used, use the necessary personal protective equipment, and pay attention to the various warnings indicated in this instruction manual. The device must be installed by authorised and qualified staff. The power supply plug must be disconnected and measuring systems switched off before handling, altering the connections or replacing the device. It is dangerous to handle the device while it is powered. Also, it is critical to keep the cables in perfect condition in order to avoid accidents, personal injury and damage to installations. The manufacturer of the device is not responsible for any damage resulting from failure by the user or installer to observe the warnings and/or recommendations set out in this manual, nor for damage resulting from the use of non-original products or accessories or those made by other manufacturers. If an anomaly or malfunction is detected in the device, do not use the device to take any measurements. Inspect the work area before taking any measurements. Do not take measurements in dangerous areas or where there is a risk of explosion. Disconnect the device from the power supply (unit and measuring system power supply) before maintaining, repairing or handling the unit s connections. Please contact the after-sales service if you suspect that there is an operational fault in the device. 8

9 3.2.- INSTALLATION Install the device on a DIN rail (EN 50022). All connections are located inside the electric panel. Terminals, opening covers or removing elements can expose parts that are hazardous to the touch while the device is powered. Do not use the device until it is fully installed DEVICE TERMINALS MODEL Table 3:List of -0 terminals. Device terminals 1: VL1, Voltage measurement 22: L3, current measurement 3: VL2, Voltage measurement 23: L2, current measurement 5: VL3, Voltage measurement 24: L1, current measurement 6: N, Voltage measurement neutral 28: Digital input 1 17: Auxiliary power supply, Vac 29: Digital input 2 18: Auxiliary power supply, Vac 30: Digital input 3 19: -, Auxiliary power supply, Vdc 31: Digital input 4 20: +, Auxiliary power supply, Vdc 36: C, Digital inputs common 21: C, Current measurement common C INPUTS + 12 V - DC Power Supply ON LINK OK ACT COM 1 COM 2 ALARM Figure 1: -0 terminals. 9

10 G AND -DUO MODELS Table 4:List of terminals: DCP-G and -DUO. Device terminals 1: VL1, Voltage measurement 17: Auxiliary power supply, Vac 3: VL2, Voltage measurement 18: Auxiliary power supply, Vac 5: VL3, Voltage measurement 19: -, Auxiliary power supply, Vdc 6: N, Voltage measurement neutral 20: +, Auxiliary power supply, Vdc 8: Auxiliary relay 4 / Inverse current relay (NC) 21: C, Current measurement common 9: Auxiliary relay 4 / Inverse current relay (COM) 22: L3, current measurement 10: Auxiliary relay 4 / Inverse current relay (NO) 23: L2, current measurement 11: Auxiliary relay 3 (COM) 24: L1, current measurement 12: Auxiliary relay 3 (NO) 28: Digital input 1 13: Auxiliary relay 2 (COM) 29: Digital input 2 14: Auxiliary relay 2 (NO) 30: Digital input 3 15: Auxiliary relay 1 (COM) 31: Digital input 4 16: Auxiliary relay 1 (NO) 36: C, Digital inputs common C INPUTS + 12 V - DC Power Supply ON LINK OK ACT COM 1 COM 2 ALARM Figure 2: Terminals: -G and -DUO. 10

11 3.4.- CONNECTION DIAGRAMS The measures current using the MC1 or MC3 transformers with a secondary current of 250 ma MC3 MC1 Table 5: Measurement transformers. Measurement transformers Three-phase transformer. Single-phase transformer SINGLE-PHASE CONNECTION SCHEME WITH MC3 TRANSFORMERS Current consumed from the grid L1 3P1 2P1 1P1 3P2 2P2 1P2 Current consumed by the user Current generated by the inverter VL1 VL2 Grey / Pink Green /White Red /cblue Brown /Green VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 3:Single-phase connection scheme with MC3 transformers. Note: The device has terminals for supplying it either AC voltage (terminals 17 and 18 of Table 3) or DC voltage (terminals 19 y 20 of Table 3). 11

12 1S1 1S2 2S1 2S2 MC1 1S1 1S2 2S1 2S2 MC1 1S1 1S2 2S1 2S2 MC SINGLE-PHASE CONNECTION SCHEME WITH MC1 TRANSFORMERS Current consumed by the user Current consumed from the grid L1 Current generated by the inverter VL1 VL2 VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 4:Single-phase connection scheme with MC1 transformers. Note: The device has terminals for supplying it either AC voltage (terminals 17 and 18 of Table 3) or DC voltage (terminals 19 y 20 of Table 3). Table 6:List of terminals of the MC1 transformer. Terminal MC1-20 MC1-30 1S1 Common Common 1S2 Scale 150 A Scale 250 A 2S1 Scale 200 A Scale 400 A 2S2 Scale 250 A Scale 500 A 12

13 THREE-PHASE CONNECTION SCHEME WITH MC3 TRANSFORMERS L1 L2 L3 3P1 2P1 1P1 3P2 2P2 1P2 VL1 Current consumed by the user VL2 Grey / Pink Green /White Red /cblue Brown /Green VL V - DC Power Supply ON LINK -0 OK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 5:Three-phase connection scheme with MC3 transformers. Note: The device has terminals for supplying it either AC voltage (terminals 17 and 18 of Table 3) or DC voltage (terminals 19 y 20 of Table 3). 13

14 1S1 1S2 2S1 2S2 MC1 1S1 1S2 2S1 2S2 MC1 1S1 1S2 2S1 2S2 MC THREE-PHASE CONNECTION SCHEME WITH MC1 TRANSFORMERS L1 L2 L3 VL1 Current consumed by the user VL2 VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 6:Three-phase connection scheme with MC1 transformers. Note: The device has terminals for supplying it either AC voltage (terminals 17 and 18 of Table 3) or DC voltage (terminals 19 y 20 of Table 3). Table 7:List of terminals of the MC1 transformer. Terminal MC1-20 MC1-30 1S1 Common Common 1S2 Scale 150 A Scale 250 A 2S1 Scale 200 A Scale 400 A 2S2 Scale 250 A Scale 500 A 14

15 COMMUNICATIONS CONNECTION The has three communications channels referred to as R1, R2 and R3. R1, Ethernet communications channel. R2, Channel for communicating with the inverter: RS-422 / RS-485 / RS-232. R3, Channel for communicating with the external measuring devices:rs-485. ON LINK OK ACT COM 1 COM 2 ALARM Communications channel R1 Communications channel R2 and R3 Figure 7: Communications channels Communications channel R2 The R2 channel is used for communications with the inverter. Table 8: Description of the R2 channel terminals. Terminals Communication protocol RS-422 RS-485 RS TxD + A+ CTS 2 RxD - - RTS 3 TxD - B- RX 4 RxD + - TX 5 GND GND GND Note: For the proper working of RS-485 communications, always connect the GND terminal. 15

16 Communications channel R3 The R2 channel is used to create a network with the auxiliary units that help measure the power in three-phase installations. Table 9: Description of the R3 channel terminals. Communication protocol Terminals RS GND 6 B- 7 A+ Note: For the proper working of RS-485 communications, always connect the GND terminal Connection diagram Connection diagram with an inverter through channel R2, RS-422 protocol and a CVM Mini, channel R3, RS-485 protocol. ON OK LINK ACT COM 1 COM 2 ALARM Tx + Rx - Tx - Rx + A+ B - GND RS-422 RS-485 Figure 8: Communication connection diagram. Table 10 shows the connections between the, R3 communications channel and the CVM Mini. Table 10:Connection between and the CVM Mini. CVM Mini Terminal Description Terminal Description 5 GND 2 GND 6 B- 1 B- 7 A+ 3 A+ 16

17 To ensure that the can communicate with the external CVM Mini, this must be configured as per Table 11. Table 11: Configuration of the external CVM Mini. Configuration of the external CVM Mini Parameter Peripherical number Baud rate Value Configurable Configurable Bits 8 Parity No Stop bits 1 Note : It is recommended that a category 5e FTP cable or higher is used and a twisted pair must be used for each earth leakage signal pair. 17

18 4.- OPERATION 4.1.-OPERATING PRINCIPLE One of the main features of the is that it can measure all the energy flows of the installation: Energy consumed by the user. Energy generated by the inverter. Energy consumed or injected into the grid. The inverter power must be configured in the device and, through a communications channel, the can adapt generation to energy consumption with the aim of achieving zero grid injection The generates a database with all the power and energy information for every measuring point, including the inverter s regulation percentage. The following functions have also been implemented in the : Grid injection alarm control. Management of non-critical loads, -G model. Dual configuration of the network parameters for hybrid installations, -DUO model MEASUREMENT SYSTEM The measures the user s voltage and current and uses these values to calculate the consumed power. If the power generated by the inverter differs from that consumed, the unit changes the inverter s working setpoint to adjust it to the real-time needs of the installation GRID INJECTION PROTECTION RELAY If measuring the power consumed from the grid, both in single-phase and three-phase installations, the can control a redundant grid current injection protection relay. Relay number 4 is used for this function, by default the relay status is NC (terminals 8, 9 and 10 to the Table 3). Table 12 describes the parameters that can be configured in the in relation to the control tasks of this function: Table 12: Configuration parameters for the grid injection protection relay. Configuration parameters for the grid injection protection relay Parameter Description Units Enable inverse current relay Activation of the inverse current protection - Stop time Grid injection validation time s Reconnection time Reconnection time s Max. Disconnections Maximum number of reconnections - Disconnect. Timeout Maximum reconnection time s 18

19 If power is injected into the grid during the period defined by the Stop time parameter, relay number 4 is desactivated. (If Stop time is programmed with the value 0 this function remains deactivated). In addition, an orange alarm icon appears on the web site, as shown in Figure 9: Orange alarm icon Figure 9: Hardware control alarm activated. When the current injected into the grid disappears, after the Reconnection time, the alarm status is deactivated. Power injected into the grid ALARM activated Power injected into the grid > 0 ALARM deactivated Power injected into the grid = 0 Validation period alarm Reconnection period Figure 10:Inverse current relay reconnection time. If the maximum number of reconnection attempts defined in the Max Disconnections parameter is reached within the time defined in the maximum reconnection period, Disconnect. Timeout parameter, the device definitively activates the alarm. 19

20 Power injected into the grid Permanent status alarm Redundant state relay ALARM activated Validation period Reconnection period Validation period Reconnection period Validation period Figure 11:Alarm reconnection sequence. Reconnection period The following indications appear in the when the reconnection sequence has been completed: Alarm LED: The alarm LED is activated in the indicating that power is being injected into the grid and that the reconnection sequence is complete. Figure 12: Inverse current relay alarm. When the alarm is activated the red LED is on Device display: A screen appears on the indicating that the device has activated the inverse current protection relay, and there is an option to unlock it. The option NO appears on the home screen; this can be changed with the and keys to YES. Press the OK key to validate the selected option. Figure 13:Inverse current alarm screen. 20

21 If NO is selected, the alarm remains permanently activated. If the OK key is pressed on the main screen, the option to deactivate the inverse current alarm is displayed. Figure 14: Inverse current alarm display. If the inverse current alarm is activated, although the device turns off and on again, this condition is memorised and the alarm notification will appear on the screen indicating that it is possible to unlock it. Web side: The icon is red indicating that the alarm has been activated. Red alarm icon Figure 15:Inverse current relay alarm activated. If you press above the alarm icon a message will appear asking if you want to deactivate the grid injection alarm. You can accept or cancel this option as shown in Figure 16. Figure 16:Deactivating the alarm on the web site. 21

22 G MODEL : MANAGEMENT OF NON-CRITICAL LOADS This functionality allows you to add non-critical loads depending on if more power can be obtained from the inverter. This management can be manual or dynamic and is carried out through the use of the system s auxiliary relays (terminals 11 to 16 of Table 3). Manual management is performed from the configuration web site, from which you can view and modify the status of the relays (Figure 17). Figure 17:Manual management of non-critical loads from the web site. When managing dynamic control, the loads are connected based on having met two conditions: Condition 1: Setpoint value Maximum modulation value PPPPPPPPPPPPPPPPPP xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii Equation 1: Condition 1 for load connection. Where the Maximum modulation value is the ratio between the power consumed by the user and the maximum power that can be obtained by the configured inverters. In other words, the maximum modulation value is (%) : Condition 2: If Injection Margin = 0% PP cccccccccccccccc PP ccmmmmmmvv 100 Equation 2: Maximum modulation value. Grid power < ( 3 x 0.03 x Consumed power) Equation 3:Condition 2 for load connection (Injection Margin = 0%). If Injection Margin 0% Grid power < ( 3 x Injection Margin x Consumed power) Equation 4:Condition 2 for load connection ( Injection Margin 0%). As soon as conditions 1 and 2 are met, a new load will be added to the system via the device s 22

23 auxiliary relays. The loads will be disconnected, based on the maximum grid contribution. This parameter is the ratio between the power supplied to the grid and the sum of the powers of the loads managed by the system. PP Grid PP CG 100 Figure 18:Maximum grid contribution. As soon as the value is greater than or equal to the value programmed by the user, the last relay to be activated will be deactivated. To ensure correct system stability, a minimum reclosing time (programmable by the user) must pass between the activation and deactivation of two loads or a single load. The order in which loads are activated is another parameter that can be set by the user. The order may be set as: connection by priority or rotating connection. Connection by priority: In this case the user sets the order in which loads are to be activated. Rotating connection: Each connection cycle begins with a different load. In other words, the first connection cycle begins by connecting load 1, then 2 and finally 3. The following connection cycle will begin with the load from relay 2, then 3 and finally 1, and so on and so forth. The disconnection order for both modes is based on a LIFO system in which the last load connected to the system will be the first load to be disconnected. Note: See examples of operation in section 7.- -G MODEL: EXAMPLES OF OPERATION DUO MODEL: NETWORK TYPE IDENTIFICATION The device can be adapted to the injection parameters, thanks to the digital inputs of the - DUO model, according to the type of network. When the unit has no active digital inputs, it operates with the injection parameters of Mode 1 (Main). When digital input 1 is activated (terminal no. 28 in Table 3), the unit changes the injection parameters specified in Mode 2 (Secondary) of the unit s web server (See POWER CONTROL & DATA LOGGER: CONTROL ). 23

24 4.2.- APPLICATIONS The is the ideal unit for managing photovoltaic installations for self-consumption with and without grid injection. Four types of configurations can be distinguished depending on the type of grid connection: Single-phase connection, the measures the power consumed by the user, the power generated by the inverter and the power consumed from the grid. Basic three-phase connection, in which the only measures the power consumed by the user. Three-phase connection with monitoring, the measures the power consumed by the user, the power consumed from the grid and calculates the power generated by the inverter. The different configurations are described below SINGLE-PHASE CONNECTION The has three voltage measuring channels (VL1, VL2 and VL3) and three current measuring channels (IL1, IL2 and IL3) and uses an MC3 current transformer to measure the power consumed by the user (VL1, IL1), the power consumed from the grid (VL2, IL2) and the power generated by the inverter (VL3, IL3). MC3 Figure 19:Single-phase connection. 24

25 Current consumed from the grid L1 3P1 2P1 1P1 3P2 2P2 1P2 Current consumed by the user Current generated by the inverter VL1 VL2 Grey / Pink Green /White Red /cblue Brown /Green VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 20:Connection diagram for the single-phase measurement system. Note : For the single-phase connection with monitoring, the terminals VL1, VL2 and VL3 must be connected to the single-phase grid phase. 25

26 BASIC THREE-PHASE CONNECTION The has three voltage measuring channels (VL1, VL2 and VL3) and three current measurement channels (IL1, IL2 and IL3), and will measure the three-phase power consumed by the user using an MC3 current transformer. MC3 Figure 21:Connection diagram for the basic three-phase system.. L1 L2 L3 3P1 2P1 1P1 3P2 2P2 1P2 VL1 Current consumed by the user VL2 Grey / Pink Green /White Red /cblue Brown /Green VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 22:Connection diagram for the basic three-phase system. Note: Full monitoring of the installation is not available with this connection, only of the consumption data, so the reverse current relay feature will be disabled. 26

27 THREE-PHASE CONNECTION WITH MONITORING Figure 23 shows a three-phase installation in which the directly measures the user s consumption, in this case a small-scale industry, by connecting an MC3 current measurement transformer. The power control uses its RS-485 channel to communicate with a CVM-MINI/NET type three-phase measuring unit. This unit is responsible for measuring the power consumed by the grid. CVM MC3 Figure 23:Connection diagram for the three-phase system with monitoring. L1 L2 L3 3P1 2P1 1P1 3P2 2P2 1P2 VL1 Current consumed by the user VL2 Grey / Pink Green /White Red /cblue Brown /Green VL V - DC Power Supply ON -0 OK LINK ACT COM 1 COM 2 ALARM N N Auxiliary Power Supply ~ Figure 24:Connection diagram for the three-phase system with monitoring. Note: The voltage readings must be identical to the current readings to ensure that the measurements are taken correctly. Make sure that there are no mismatches between them. 27

28 4.3.- KEYBOARD The has four keys so that the user can browse through the different screens on the unit. ON OK LINK ACT COM 1 COM 2 ALARM Keyboard Figure 25: keyboard. Key OK OK Table 13: Teclado Function Go back in the display of the device screens Advances in the display of the device screens Advances in the list of options on the menus. Validate the parameter entries. Load the factory parameters of the device Note: The keys must be held down for 1 second. 28

29 4.4.- LEDs The has six LEDs so that it is easy for the user to identify the operating status of the device. ON LINK OK ACT COM 1 COM 2 ALARM LEDs Figure 26: LEDs LED ON LINK ACT COM1 COM2 ALARM Table 14: LEDs Function 1 s. flashing Indicates that the devices is power on. Connection to the active Ethernet network. Flashing. Communication frames are being sent. Indicates the communications status of the R2 channel to which the inverters are connected. In 1 second, the device flashes as many times as the number of inverters it has connected and responding. Flashing. Indicates the communications status of the R3 channel through which the communicates with the auxiliary CVM Mini devices Indicates that power is being injected into the grid DISPLAY The includes a 20-character, two-line display which is used as a user interface. Figure 27: Display. 29

30 5.- DISPLAY SINGLE-PHASE MODE If the device is configured to work in single-phase mode, the default screen is shown in Figure 28. Power corresponding to the percentage regulation value Percentage regulation of the nominal power of the inverter. Power consumed by the user in kw with 1 decimal. MC3 Channel 1 Power consumed from the grid in kw with 1 decimal. MC3 Channel 2 Power generated by the inverter in kw with 1 decimal. MC3 Channel 3 Figure 28: Default screen in single-phase mode. The regulation percentage and corresponding power are indicated on the top line; in the example shown in the Figure 28 below, the nominal power of the inverter is 4.0 kw and the is sending an order to inject 15%, corresponding to 0.6 kw. The power consumption for each of the three measuring channels is indicated on the botton line. If the connection has been performed correctly, the three power values should appear with a positive sign. If any of the values appear with a negative sign, this means that the cable of the phase in question has been connected the other way round and should therefore be turned. Press the key to access the display and configuration menu, Figure 29. Enter the menu Enter the menu Enter the menu Figure 29: Display and Configuration menu. 30

31 5.2.- THREE-PHASE MODE BASIC THREE-PHASE CONNECTION The default screen displayed when the unit has been connected to a basic three-phase system is shown in Figure 30. Power corresponding to the percentage regulation value Percentage regulation of the nominal power of the inverter Total three-phase power consumed by the user, in kw, with one decimal. Figure 30: Default screen in basic three-phase mode. The same information as the single-phase configuration is shown on the first line. The total three-phase power is shown on the second line. Press the key to access the display and configuration menu, Figure THREE-PHASE CONNECTION WITH MONITORING The default screen displayed when the unit has been connected to a basic three-phase system with monitoring features is shown in Figure 31. Power corresponding to the percentage regulation value Percentage regulation of the nominal power of the inverter. Power consumed by the user in kw with 1 decimal. MC3 Channel 1 Power consumed from the grid in kw with 1 decimal. MC3 Channel 2 Power generated by the inverter in kw with 1 decimal. MC3 Channel 3 Figure 31: Default screen in three-phase connection with monitoring. The top line indicates the percentage three-phase regulation and corresponding power. The bottom line indicates the three-phase power consumption of each one of the measuring channels. If the connection has been performed correctly, the three power values should appear with a 31

32 positive sign. If any of the values appear with a negative sign, this means that the cable of the phase in question has been connected the other way round and should therefore be turned. Press the key to access the display and configuration menu, Figure DISPLAY MENU : MEASURES Figure 32 shows the main screen of the Measures menu, displaying all measurement parameters of the device. Figure 32: Measures menu, main screen. Press the key to open the display menu. Use the and keys to browse the screens. Press the OK key to exit the menu. Single-phase mode Voltage and Current to: - User, Channel 1, - Grid, Channel 2, - Inverter, Channel 3 Table 15: Measures menu. Measures display menu Three-phase mode Three-phase voltage and current. Single-phase mode Three-phase mode Inductive reactive power (1) Capacitive reactive power (1) From each channel Three-phase Inductive reactive power (1) Three-phase Capacitive reactive power (1) Active energy Consumed (kwh) US : User energy - GR: Grid energy - PV: Inverter energy Inductive reactive energy consumed (kvarh) US : User energy - GR: Grid energy - PV: Inverter energy 32

33 Table 15 (Continuation) : Measures menu. Measures display menu Capacitive reactive energy consumed (kvarh) US : User energy - GR: Grid energy - PV: Inverter energy Active energy generated (kwh) US : User energy - GR: Grid energy - PV: Inverter energy Inductive reactive energy generated (kvarh) US : User energy - GR: Grid energy - PV: Inverter energy Capacitive reactive energy generated (kvarh) US : User energy - GR: Grid energy - PV: Inverter energy (1) A negative sign indicates that the direction of the current is inversed. 33

34 5.4.- DISPLAY WEBSIDE You can enter the device web site from any browser using the IP address. Where xxx.xxx.xxx.xxx is the IP address assigned by the user. Note: Use Google Chrome. Note: When you access the web site for the first time, you will have to accept the security certificate so that you can use secure connections. Figure 33: Acceptance alert for the SSL secure connection certificate. The display web site will be different, according to the model of the device. 34

35 MODEL Power corresponding to the percentage regulation value Percentage regulation of the nominal power of the inverter Power generated by the inverter Power consumed by the user Power consumed from the grid Data Logger Figure 34: Display Webside: -0 model. Note: When the is configured to operate in the three-phase mode and there is a problem with the exterior CVM minis or these have not been connected, the Power consumed from the grid section will display -- 35

36 G MODEL Power corresponding to the percentage regulation value Percentage regulation of the nominal power of the inverter Power generated by the inverter Power consumed by the user Power consumed from the grid Data Logger State of relays Figure 35: Display Webside: -G model. Note: When the is configured to operate in the three-phase mode and there is a problem with the exterior CVM minis or these have not been connected, the Power consumed from the grid section will display -- 36

37 DUO MODEL Percentage regulation of the nominal power of the inverter Power corresponding to the percentage regulation value Power consumed by the user Power generated by the inverter Power consumed from the grid (Main) Consumed power of the secondary generator (Secondary). Data Logger State of relays Parameters Mode 1 (Main) Parameters Mode 2 (Secondary) Figure 36: Display Webside: -DUO model. 37

38 DATA LOGGER This function allows you to install only the in a first phase, without the inverters and solar panels, so that you can regularly analyse the power consumed and the energy accumulated, in order to analyse the performance of the installation and thus design the future self-consumption installation. To download the data, the user must select the days between which they want to download the file with the data log. Figure 37: Selecting the download period. From, Start date for the download period. The download will start at 00:00. To, End date for the download period. The download will end at 23:59. On selecting the start or end date a calendar appears which allows you to select the download period, Figure 38. The days marked in green are days with a corresponding log. Figure 38:Introducing the download start and end date. Once the start and end date are selected, press the Download log key and a file with the name cdp.csv will be downloaded to the path configured in the web browser. The file is downloaded in.cvs format and can be opened in Microsoft Excel..cvs files are a simple file format to represent data in the form of a table, in which the columns are separated by commas (or a semicolon in countries which use the comma as the decimal separator: Spain, France, Italy, etc.) and rows are separated by line feeds. The file size is 100 MBytes allowing users to save approximately 5200 days in total. The memory is of the rotating type; when it is full the oldest value is replaced with the newest one. The size of each log is approximately 200 bytes. If the time is changed and delayed, the existing log is opened as well as the new one. 38

39 The downloaded file is given the name cdp.csv. If another file is downloaded to a directory which already contains a file, a new file is generated with the name cdp (1).csv. The number in brackets increases with the number of successive downloads in the same directory. The files are saved in the download directory selected in the browser. The can act as a Data Logger and record the electrical parameters that it measures every 1, 5, 10 or 15 minutes. If the is configured to work in three-phase mode and the information from the external CVM Mini is not available, nan appears in the corresponding column. Table 16 shows the fields recorded in the file. Table 16: Fields of the Data Logger file of the. Column Name (3) Description Units 1 Date and time Log date DD/MM/AA HH:MM 2 PV W L1 Photovoltaic power produced in L1 W (1) 3 PV W L2 Photovoltaic power produced in L2 W (1) 4 PV W L3 Photovoltaic power produced in L3 W (1) 5 LOAD W L1 Power consumed by phase 1 load W (1) 6 LOAD W L2 Power consumed by phase 2 load W (1) 7 LOAD W L3 Power consumed by phase 3 load W (1) 8 GRID CONSUMPTION W L1 Power consumed by the phase 1 grid. W (1) 9 GRID CONSUMPTION W L2 Power consumed by the phase 2 grid. W (1) 10 GRID CONSUMPTION W L3 Power consumed by the phase 3 grid. W (1) 11 GRID INJECTION W L1 Power injected into the phase 1 grid. W (1) 12 GRID INJECTION W L2 Power injected into the phase 2 grid. W (1) 13 GRID INJECTION W L3 Power injected into the phase 3 grid. W (1) 14 PERCENT L1 15 PERCENT L2 16 PERCENT L3 Regulation percentage of the nominal power of the phase 1 inverter Regulation percentage of the nominal power of the phase 2 inverter Regulation percentage of the nominal power of the phase 3 inverter 17 PV Wh Energy generated by the inverter Wh 18 LOAD Wh Energy consumed by the load Wh 19 GRID CONSUMPTION Wh Energy consumed by the grid Wh 20 GRID INJECTION Wh Energy injected into the grid Wh 21 STATUS R1 Status of relay 1 for managing non-critical loads (2) - 22 STATUS R2 Status of relay 2 for managing non-critical loads (2) - 23 STATUS R3 Status of relay 3 for managing non-critical loads (2) - (1) Parameter with 1 resolution decimal. (2) Possible states are : Dis : Disabled M0: Manual mode,relay deactivated. M1: Manual mode, relay activated. D0: Dynamic mode,relay deactivated. % % % 39

40 D1: Dynamic mode, relay activated. (3) The sign criteria in the Data Logger file: Positive power : consumption Negative power : generation The data gathered by the Data Logger can be used to check the insolation periods of an installation. Figure 39 shows that during periods in which insolation is minimum, the user s consumption is taken from the grid, however, it is the inverter that supplies energy during periods with maximum insolation. This is the period of maximum insolation during which the energy generated by the inverter is consumed. There is no insolation during these periods and energy is obtained from the grid. Figure 39:Graph showing the operation of the based on insolation. 40

41 Figure 40 shows the above in more detail: as insolation increases (the red curve), grid consumption (black line) decreases and the energy generated by the inverter increases. Figure 40:Detail of the operation. 41

42 6.- CONFIGURATION You can configure the device on the configuration web site (see CONFIGURATION WEB SITE ). Only the IP is configured with the keypad in the Network menu Figure 41. Figure 41: Configuration menu: Network CONFIGURATION MENU: NETWORK Figure 42 shows the main screen of the Network configuration menu, where the Ethernet connectivity parameters are configured. Figure 42: Network configuration menu, main screen. Press the key to enter the configuration menu DHCP ASSIGNMENT You can select the DHCP option and configure the IP value in this screen. DHCP Press the key to enter edit mode. Use the keys and to browse the different options: Yes, the IP is automatically assigned. No, the TCP parameters are configured manually. 42

43 Press the key to configure the IP. IP Note: If you have set the DHCP option to Yes, the parameter cannot be edited. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to exit the edit mode. Press the to go to he next configuration parameter. Press the OK key, the screen shown in Figure 43, will be displayed, which allows the modifications to be saved and exits the configuration mode NETMASK Y GATEWAY SAVE CONF NO Figure 43: Save setup parameters screen. The Netmask and Gateway are configured in this screen. Note: If you have set the DHCP option to Yes, the parameter cannot be edited. MASK This section configures the Netmask. Press the key to enter edit mode. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to configure the GW. GW This section configures the Gateway. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to exit the edit mode. Press the to go to he next configuration parameter. Press the OK key, the screen shown in Figure 43, will be displayed, which allows the modifications to be saved and exits the configuration mode. 43

44 PRIMARY Y SECONDARY DNS You can configure the preferred DNS server (DNS1) and alternative DNS server (DNS2) in this screen. Note: If you have set the DHCP option to Yes, the parameter cannot be edited. DNS1 This section configures the primary DNS server. Press the key to enter edit mode. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to configure the DNS2. DNS2 This section configures the secondary DNS server. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to exit the edit mode. Press the OK key, the screen shown in Figure 43, will be displayed, which allows the modifications to be saved and exits the configuration mode CONFIGURATION MENU: SYSTEM Figure 44 shows the main screen of the System configuration menu, where the date of the device are configured. Figure 44: System configuration menu, main screen. Press the key to enter the configuration menu DATE AND TIME You can also set the date and time on this screen. It also displays the firmware version. 44

45 Press the key to enter edit mode. Use the keys and to modify the selected digit. Use the key to change digit. When you reach the last digit, press the key to exit the edit mode. Press the OK key, the screen shown in Figure 43, will be displayed, which allows the modifications to be saved and exits the configuration mode CONFIGURATION WEBSIDE You can enter the device web site from any browser using the IP address. Where xxx.xxx.xxx.xxx is the IP address assigned by the user. Note: Use Google Chrome. Note: When you access the web site for the first time, you will have to accept the security certificate so that you can use secure connections. Figure 45: Acceptance alert for the SSL secure connection certificate. If you have activated the access password, the unit will request the user name and password on the pop-up screen shown below when you try to access via Web (Figure 46) Figure 46: Password screen. 45

46 Note : User name: admin GENERAL PARAMETERS The top of the web site shows the device information, Figure 47, and the option to update its firmware and date. Figure 47: Updating parameters S/N Serial number of the device. MAC MAC address of the device. Version to update the firm- This section displays the device version and you can click on the ware of the device. When pressing button, the screen in Figure 48 appears, where you will need to find the upgrade file that you have downloaded onto the computer and press the Upgrade button. Note : The upgrade file must be downloaded from the Circutor web site, Figure 48: Firmware upgrade screen. 46

47 During the upgrade process, you will see the screen in Figure 49. Figure 49: Screen during the upgrade process. Note: If the is upgraded with the wrong firmware version for the product, a version error message will appear on the display as shown in Figure 50. Figure 50: Version error screen. Date This section displays the date and time of the device. To modify the value, enter the new value and press. Config File When pressing the button, the configuration file is downloaded in.txt format. Data Logger It is possible to reset the historical data stored in the data logger by pressing the button POWER CONTROL & DATA LOGGER : INVERTER You can configure the inverter s parameters in this section, Figure 51. Figure 51: Inverter setup parameters. Inverter type In this section it is configured Inverter model to be used in the installation. Note: All inverters connected to the must be of the same type. 47

48 If you select the option Generic 4 inputs, the parameter Mode appears on the screen with two possible options (Figure 52): Discrete: this option allows 4 regulation stages: 0%, 30%, 60% and 100%. Binary: this option allows 16 regulation stages between 0% and 100% of the inverter s nominal power. The relay combinations are done using binary logic. When the Binary option is activated, relay number 4 stops functioning as a protection against reverse current and starts functioning like the rest of the relays. Figure 52: Inverter setup parameters (Type : Generic 4 inputs) If the SMA option is selected, the Inverter x S/N parameters will appers on the screen, Figure 53, where you will need to enter the serial numbers of each of the inverters. Figure 53:Inverter setup parameters (Type : SNA) Note : It is important to enter the serial number of each inverter in the phase in which it was installed, so that the can detect it. Inverter power In this section it is configured the total power to be controlled by the, in W. Note: If more than 1 inverter is controlled, enter the sum of the power controlled by each inverter in this section. Maximum value : 1MW Number of inverter In this section it is configured the number of inverters to control. 48

49 POWER CONTROL & DATA LOGGER : CONTROL In this section it is configured the Inverter control parameters, Figure 54. Figure 54: Power Control parameters. Phase In this section the architecture of the inverter grid connection must be selected. The available options are: Single phase for a single-phase installation with single-phase inverters. Three single phases for a three-phase installation with 3 single-phase inverters. Three phase for a three-phase installation with three-phase inverters. If we select the this option the parameter Three phases mode will appear on the screen, allowing us to select the control mode. The options are: Min. Power phase, control by minimum power: when this option is selected the sends a production setpoint based on the phase of the minimum consumption. Max. Power phase, control by maximum power: the sends a production setpoint based on the phase of the maximum consumption. Selected phase, control by set phase: this option allows the user to set a phase such that the will always send the production setpoint to the inverter based on that phase s consumption. When this option is selected a dropdown menu appears on the screen allowing you to select the phase Average power, control by average power: this option takes an average of the consumption of the three phases and sends a production setpoint to the inverter with the value of the average power. Allow compensation Note : This function is available when the unit is working with more than 1 inverter. This function allows you to manage several inverters independently to obtain the maximum generation from each of them. Example: For example, an installation with two 5 kw inverters connected to 2 strings of independent panels on a gabled roof in the east-west direction and consumption of 4 kw. If in the morning, inverter 1 can generate 5 kw but inverter 2 can only generate 1 kw, because 49

50 the panels are not receiving sufficient radiation, rather than requesting 2 kw from each inverter, the will request the maximum power from the inverter that generates the least (1 kw) and the remainder will be requested from the inverter which generates more (3 kw), to try to reach the required consumption. To do this, it will gradually increase the regulation percentage of both inverters at the same time until both generate a total power equivalent to that required by the load. Note: In three-phase systems, the connection of a CVM Mini is mandatory to measure the power consumed/delivered to the mains. Enable remote control Note: on activating this option, the options injection margin and allowed injection are deactivated. This option facilitates the remote control of the setpoint value, through the unit s digital inputs. The value of the digital input selected is a percentage that it added to the fixed setpoint value. By default, the value of the digital inputs are,table 17 : Table 17: Default values of the digital inputs. Digital input Default value Example: In an installation with a consumption of 600W and a 4kW inverter, the setpoint that calculate would be15%. No input activated: the maintains the calculated setpoint. Input 1 activated: the maintains the calculated setpoint. Input 2 activated: the adds 30% to the calculated setpoint (the new set-point will be 45%). Input 3 activated: the adds 60% to the calculated setpoint (the new set-point will be 75%). Input 4 activated: the sends the 100% setpoint to the inverter. (100% will be the maximum setpoint). If several digital inputs are activated, the will always take the highest as a reference. Injection margin You can configure the minimum power injected into the grid over the % of the consumed power with this parameter. Example: if consumption is 3 kw, and the injection margin is 10%, the will try to take 300 W from the grid and will therefore send the inverter a set-point so that it will provide 2700 W. Two different configurations can be programmed for the -DUO model, using the Injection margin parameter, according to the type of network that is present (Figure 55). 50

51 Figure 55: Power Control parameters (-DUO) When the device has no active digital inputs, the -DUO operates with the injection parameters of Mode 1 (Main). If you activate digital input 1 (terminal no. 28 in Tabla 3), the unit will operate with the injection parameters configured in Mode 2 (Secondary). Allowed injection In this section it is configured the Percentage of injection in excess of the consumed power. This value can be positive or negative with respect to the photovoltaic power. The negative values are used for hybrid networks, renewable and non-renewable networks (UPS, generator set, grid, etc.), where it is important that the non-renewable network is not permanently connecting and disconnecting. A negative Allowed injection forces the non-renewable energy source to constantly supply a residual percentage of the consumption. Example: For example, an installation with one 5 kw inverter and a 100 kw generator set. Consumption is 4 kw and one of the loads needs to be permanently supplied. In this case, the variable Inverter power will be programmed to 5000 W and the variable Allowed injection to a value of -1%. Therefore, the generator set will always be connected, supplying 50 W. Two different configurations can be programmed for the -DUO model, using the Allowed injection, according to the type of network that is present (Figure 55). When the device has no active digital inputs, the -DUO operates with the injection parameters of Mode 1 (Main). If you activate digital input 1 (terminal no. 28 in Tabla 3), the unit will operate with the injection parameters configured in Mode 2 (Secondary). Enabled Power Factor (-DUO Model) When you activate this option, the -DUO sends setpoints to compensate the reactive energy being consumed. This function is only available with FRONIUS inverters and the FRONIUS MB communications protocol. Force Secondary Mode (-DUO Model) If you activate this option, the -DUO will always operate with the parameters configured in the Secondary sector. 51

52 POWER CONTROL & DATA LOGGER : REVERSE CURRENT RELAY In this section it is configured the parameters for the inverse current control relay, Figure 56. (See GRID INJECTION PROTECTION RELAY ) Figure 56: Reverse current relay parameters. Enable reverse current relay Enable this option to activate the reverse current relay protection. If the device measures a negative power value in the grid, it desactivates the inverse current relay to disconnect the inverter. This relay acts as redundant protection against a possible grid injection. The relay has 3 terminals and can be NO or NC, depending on how it is connected. In three-phase mode it is essential to install a CVM Mini to measure the grid. Stop time This parameter configures the time during which the grid injection condition must remain active before activating the inverse current relay (seconds). Reconnection Time This parameter configures the time the device waits before deactivating relay no. 4 (seconds) when it stops measuring the inverse current. Max disconnections This parameter configures the number of disconnections the can perform via the inverse current before it is definitively locked. Disconnect. timeout This parameter configures the time once the maximum number of reconnections has been reached, this is the time taken for the unit to secure the inverse current relay. This value must be equal to or higher than: Disconnect. Timeout > = ( Stop time+ Reconnection time) x (Max.Disconnections). 52

53 POWER CONTROL & DATA LOGGER : AUXILIAR LOADS RELAYS You can configure the optional management of non-critical loads in this section, Figure 57. (See G MODEL: NON-CRITICAL LOAD MANAGEMENT ) Figure 57: Auxiliar loads relays parameters. Load Management Mode This parameter is used to select how non-critical loads are managed. The possible options are: Disabled, they are not managed. Manual, relays are managed manually.. If you select the Manual, option, the 3 relays appear on the screen,, click on the button of each relay to activate or deactivate them manually. Figure 58: Load Management Mode: Manual. Dynamic, If you select dynamic management of the loads, you have to program the following parameters, Figure 59: Figure 59: Load Management Mode: Dynamic. Max Modulation value In this parameter you enter the maximum modulation value and can add dynamic loads to the system below. Connection Order Select how you are going to connect the relays: Priority or Rotating 53

54 1st Priority, 2nd Priority, 3rd Priority If you have selected priority connection, you will then select the priority for each of the relays. Max grid contribution In this section you enter the value for maximum grid contribution, which is the minimum value for deactivating loads. Reconnecting time Minimum time to allow system stabilisation between: the activation of two loads. the deactivation of two loads. the deactivation of the last load and the activation of a new one. Relay 1, Relay 2, Relay 3: Power This parameter configures the power to be consumed by the load. If it is zero, the load is considered to be deactivated. Relay 1, Relay 2, Relay 3: Min Connection Time This parameter configures the minimum time that a load must stay connected before it can be deactivated, if required POWER CONTROL & DATA LOGGER : DATA LOGGER This parameter configures the time to record logs in the Data Logger, Figure 60. (See DATA LOGGER ) Figure 60: Data Logger parameters. Time between registers This parameter configures the time to record logs in the Data Logger. The possible values are: 1, 5, 10, 15 or 60 minutes ANALYZERS SETUP : LOAD ANALYZER In this section it is also possible to configure the communications between the and the power analyzers Figure 61. Figure 61: Parámetros de configuración de los Analizadores 54

55 Enable external analyzer When you enable this option, an external analyser is enabled as the measuring device, instead of the. Primary current Use this parameter to configure the value of the primary of the load analyser s current transformer. Device number Enter the peripheral number of the external analyser in this parameter, if the corresponding option has been activated Enable external analyzer ANALYZERS SETUP : GRID ANALYZER You can configure the communications between the and network analyser in this section, Figura 49. Primary current Use this parameter to configure the value of the primary of the network analyser s current transformer. Device number This parameter configures the peripheral number of the CVM power analyzer installed to measure the consumption of the grid ANALYZERS SETUP : PV ANALYZER You can configure the communications between the and a photovoltaic energy production analyser, Figura 49. Enable external analyzer When you enable this option, an external analyser is used as the measuring unit, instead of the. The automatically calculates the values of the photovoltaic production using the consumption measurements (Load analyzer) and the grid (Grid analyzer). Therefore, enabling this option is only of interest in installations which already have a CVM power analyzer installed, which is not communicating with any system (software or automaton) and the user wants the to read the values measured by this analyzer. Primary current Use this parameter to configure the value of the primary of the PV analyser s current transformer. 55

56 Device number Enter the peripheral number of the external analyser in this parameter, if the corresponding option has been activated Enable external analyzer ANALYZERS SETUP : COMUNICATIONS This section can be used to configure the transmission speed of the RS-485 bus. Figure 62: Analyser setup parameters: Baudrate Baudrate Use this parameter to configure the transmission speed of the RS-485 bus NETWORK & SECURITY SETUP : NETWORK You can configure the network parameters of the in this section, Figure 63. Figure 63: Network setup parameters. Host name To select the assignment of a static IP (DHCP = Off), enter in this section the MAC address shown on the label attached to the side of the unit, which appears as 00:26:45:XX:XX:XX DHCP Select the configuration of the IP address of the device in this section: DHCP = On, automatic configuration. DHCP = Off, manual configuration. 56

57 Address Note: If you have set the DHCP option to On, the parameter cannot be edited. This parameter configures the IP address. Netmask Note: If you have set the DHCP option to On, the parameter cannot be edited. This parameter configures the Netmask. Gateway Note: If you have set the DHCP option to On, the parameter cannot be edited. This parameter configures the gateway. Primary DNS server Note: If you have set the DHCP option to On, the parameter cannot be edited. This parameter configures the primary DNS server. Secondary DNS server Note: If you have set the DHCP option to On, the parameter cannot be edited. This parameter configures the secondary DNS server NETWORK & SECURITY SETUP : SECURITY You can configure the security parameters in this section, Figure 64. Figure 64: Security setup parameters. Use secure server (ssl) You can select the use of a secure server in this section. Password In this section, you can activate the use of a password to access the configuration web site: On, activate the password used to access the configuration web site. Off, deactivate the password used to access the configuration web site. 57

58 New password Enter the new password in this parameter. Repeat password Enter new password again in this parameter SAVE SETUP, LOAD DEFAULT SETUP y RESET There are 3 buttons at the bottom of the configuration web site, Figure 65. Figure 65: Save setup, Load default setup and Reset buttons. Press the save configuration button after configuring the device. When selecting this button, the devices loads the default values. When selecting this button, the is reset. 58

59 7.- -G MODEL : OPERATING EXAMPLES SINGLE-PHASE INSTALLATION WITH 1 LOAD TO BE CONNECTED We start with a single-phase installation in which we want to use the excess photovoltaic production to supply 1 non-critical load, such as a heat pump. Load 1: 5000 W heat pump The goal is to activate these loads during times in which there is a production excess, thus reducing energy costs. This is the start data: Phase Inverter power Table 18:Start data Consumption Setpoint Current production L W 4000 W 40% 4000 W (40% of the nominal) Loads 4000 W 4000 W Load W 0 W Relay W 40% Figure 66:Single-phase installation with 1 load to connect: Start mode. The -G programming is shown in Table 19. Table 19:-G programming. Parameter Value Inverter : Inverter power W Inverter : Number of inverter 1 Control : Phase Single phase Control : Injection margin 0 % Auxiliar Loads Relays: Load Management Mode Dynamic Auxiliar Loads Relays: Max modulation value 90 % Auxiliar Loads Relays: Max grid contribution 20 % 59

60 Table 19 (Continuation): -G programming. Parameter Value Auxiliar Loads Relays: Reconnecting time 5 minutes Relay 1: Power 5000 W Relay 1: Min connection time 90 minutes The -G can connect Load 1 if 2 conditions are met, according to the programmed values: Condition 1 : PPPPPPPPPPPPPPPPPP xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii The programmed Max modulation value has been set to 90%, i.e., when the consumed power / Inverter power ratio drops below 90%, the -G will try to connect the associated loads. In this case: ( 4000 xx100 = 40%) 40% 90% This condition is met Condition 2 : If Injection margin = 0% If Injection margin 0% Grid Power < 3 x 0.03 x Consumed Power Grid Power < 3 x Injection margin x Consumed Power In this case: 0 < 3 x 0.03 x 4000 this condition is med Condition 1 Condition 2 Action Relay 1 is closed and Load 1 is connected (Figure 67). 60

61 Loads 4000 W 4000 W Load W 3000 W 6000 W 90% 5000 W PPPPPPPPPPPPPPPPPP Relay 1 xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii PPPPPPPPPPPPPPPPPP xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii PP cccccccccccccccc 100 PP ccmmmmmmvv PP cccccccccccccccc PP ccmmmmmmvv 100 PP Grid PP CG 100 Figure 67:Single-phase installation with 1 load to connect: Load 1 connected. PP Grid 100 In this situation the -G maintains the system PP CG without adding or removing any loads for a time equalling the longer of PPPPPPPPPPPPPPPPPP the configured Reconnection time and Min. disconnection time xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP variables, in order to achieve PPPPPPPPPPPPPPPP system PPPPiiPPiiiiPPii stability (in this case 90 minutes). PPPPPPPPPPPPPPPPPP xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP To check if the Load 1 must PPPPPPPPPPPPPPPP be disconnected, PPPPiiPPiiiiPPii the -G waits for the amount of time programmed in the Min. connection time variable and then checks if the following condition is met: ( 4000 xx100 = 40%) 40% 90% This condition is met ( 4000 xx100 = 40%) 40% 90% This condition is met Condition 3 : PPgggggggg PPgggggggg < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr ( ( = 60%) 60% 20% This condition is not met = 60%) 60% 20% This condition is not met 0 Condition 3 0 ( ( = 0%) = 0%) 0% 0% 50% Action This condition is is met met Relay 1 is open and Load 1 is disconnected. ( 6000 ( xx100 xx100 = = 60%) 60%) 60% 60% 90% This This condition condition is is met met ( 0 0( = 0%) 0% 50% This condition is met = 0%) 0% 50% This condition is met ( 8000 xx100 = 80%) 80% 90% This condition is met xx100 = 80%) 80% 90% This condition is met (

62 7.2.- SINGLE-PHASE INSTALLATION WITH 3 LOADS TO BE CONNECTED We start with a single-phase installation in which we want to use the excess photovoltaic production to supply 3 non-critical loads: Load 1: 2000 W water pump Load 2: 2000 W heat pump Load 3: 1000 W washing machine The goal is to activate these loads during times in which there is a production excess, thus reducing energy costs. This is the start data: Phase Inverter power Table 21:Start data Consumption Setpoint Current production L W 4000 W 40% 4000 W (40% of the nominal) Loads 4000 W 4000 W Load W 0 W Load W Relay 1 Load W 4000 W 40% Relay 2 Relay 3 Figure 68:Single-phase installation with 3 loads to be connected: Start mode. The -G programming is shown in Table 22. Table 22:-G programming. Parameter Value Inverter : Inverter power W Inverter : Number of inverter 1 Control : Phase Single phase Control : Injection margin 0 % Auxiliar Loads Relays: Load Management Mode Dynamic Auxiliar Loads Relays: Max modulation value 90 % Auxiliar Loads Relays: Max grid contribution 50 % 62

63 Tabla 22 (Continuación): Programación del -G. Parameter Value Auxiliar Loads Relays: Reconnecting time 5 minutes Relay 1: Power 2000 W Relay 1: Min connection time 2 minutes Relay 2: Power 2000 W Relay 2: Min connection time 2 minutes Relay 3: Power 1000 W Relay 3: Min connection time 90 minutes The -G can connect Load 1 if 2 conditions are met, according to the programmed values: Condition 1 : PPPPPPPPPPPPPPPPPP xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii The programmed Max modulation value has been set to 90%, i.e., when the consumed power / Inverter power ratio drops below 90%, the -G will try to connect the associated loads. In this case: ( 4000 xx100 = 40%) 40% 90% This condition is met Condition 2 : If Injection margin = 0% If Injection margin 0% Grid Power < 3 x 0.03 x Consumed Power Grid Power < 3 x Injection margin x Consumed Power In this case: 0 < 3 x 0.03 x 4000 this condition is med Condition 1 Condition 2 Action Relay 1 is closed and Load 1 is connected (Figure 62). 63

64 Loads 4000 W PPPPPPPPPPPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii 0 W xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PP cccccccccccccccc 4000 W 2000 W Relay 1 Load W W PP ccmmmmmmvv Relay 2 60% PPPPPPPPPPPPPPPPPP xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii PP Grid 100 PP CG Load W Relay 3 Load W PP cccccccccccccccc 100 PPPPPPPPPPPPPPPPPP PP ccmmmmmmvv xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii Figure 69:Single-phase installation with 3 loads to be connected: Load 1 connected. PP Grid 100 In this situation the -G maintains the system PP CG without adding or removing any loads for a time equalling the longer of the configured Reconnection time and Min. disconnection time variables, in ( order 4000 xx100 to achieve = 40%) system 40% stability 90% (in this This case condition 5 minutes). is met PPPPPPPPPPPPPPPPPP xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP To check if the Load 1 must PPPPPPPPPPPPPPPP be disconnected, PPPPiiPPiiiiPPii the -G waits for the amount of time programmed in the Min. connection PPgggggggg time variable and then checks if the following condition is met: < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr ( 4000 xx100 = 40%) 40% 90% This condition is met Condition 3 : ( = 60%) 60% 20% This condition is not met PPgggggggg < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr PPPPPPPPPPPPPPPPPP = 0%) 0% xx100 50% MMPPPP. This PPPPPPPPPPPPPPPPPPPP condition iiiiiiiiii is met PPPPPPPPPPPPPPPP = 60%) PPPPiiPPiiiiPPii 60% 20% This condition is not met 0 ( 6000 ( Condition 0 ( Action xx100 ( = 0%) 50% is met = 60%) PP cccccccccccccccc 60% 90% This condition is met The Load stays connected. PP ccmmmmmmvv Then, the -G will xx100 = 60%) 60% 90% This condition is met ( check = whether 0%) it 0% can PP connect Grid 50% the This Load condition 2. To do is so, met it must verify whether the 2 connection conditions are met: 100 PP CG Condition 1 : ( ( ( = 0%) 0% 50% This condition is met PPPPPPPPPPPPPPPPPP 8000 xx100 = 80%) 80% xx100 90% MMPPPP. MMPPPPPPPPPPPPPPPPPP This condition VVPPPPPPPP is met PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii 64 ( 4000 ( ( 8000 xx100 = 80%) 80% 90% This condition is met xx100 = 10%) 40%) 40% 10% 90% 50% This condition is is met 1000

65 In this case: Condition 2 : ( 6000 xx100 = 60%) 60% 90% This condition is met If Injection margin = 0% If Injection margin 0% Grid Power < 3 x 0.03 x Consumed Power Grid Power < 3 x Injection margin x Consumed Power In this case: 0 < 3 x 0.03 x 6000 this condition is med Condition 1 Condition 2 Action Relay 2 is closed and Load 2 is connected (Figure 63). Loads 4000 W 4000 W Load W 0 W 2000 W Load W Relay W Load W 8000 W 80% Relay 2 Relay 3 Figure 70:Single-phase installation with 3 loads to be connected: Load 1 and 2 connected. In this situation the -G maintains the system without adding or removing any loads for the amount of time configured in the Reconnection time variable, in order to achieve system stability (in this case 5 minutes). To check if Load 2 must be disconnected, the -G waits for the amount of time programmed in the Min. connection time variable and then checks if the following condition is met: 65

66 Condition 3 : PPgggggggg < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr ( = 0%) 0% 50% This condition is met Condition 3 Action The Load 2 stays connected. At this point, the -G will check whether it can connect the Load 3. To do so, it must verify whether the connection condition is met: Condition 1 : PPPPPPPPPPPPPPPPPP xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii In this case: ( 8000 xx100 = 80%) 80% 90% This condition is met Condition 2 : If Injection margin = 0% if Injection margin 0% Grid Power < 3 x 0.03 x Consumed Power Grid Power < 3 x Injection margin x Consumed Power In this case: 0 < 3 x 0.03 x 8000 this condition is med Condition 1 Condition 2 Action Relay 3 is closed and Load 3 is connected (Figure 71). 66

67 PP Grid PP CG 100 PPPPPPPPPPPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii Loads 4000 W xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP ( W Load W xx100 = 40%) 40% 90% This condition is met 1000 W PPgggggggg9000 W PPccccccccccccccccgg ggggrrrrrrrr ( W Relay W Relay 2 < MMrraa 100% GGgggggg ccccccccggggccccccggcccc1000 W PPPPPPPPPPPPPPPPPP xx100 MMPPPP. PPPPPPPPPPPPPPPPPPPP iiiiiiiiii PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii = 60%) 60% 20% This condition is not met Load W Relay 3 Load W PP 0 cccccccccccccccc ( = 0%) 0% Figure 71:Single-phase installation with 3 PPloads ccmmmmmmvv 50% 100 This condition is met 6000 to be connected: Load 1, 2 and 3 connected. As shown in Figure 71, we can see that although the inverter is 10 kw the existing radiation only PP allows it to produce 9 kw, so to get 10 kw of consumption Grid 100 it will have to take 1 kw from the grid. PP ( 6000 xx100 = 60%) 60% CG 90% This condition is met In this situation the -G maintains the system without adding or removing any loads for the amount of time configured in the PPPPPPPPPPPPPPPPPP Reconnection time variable, in order to achieve system stability (in this case 5 minutes). xx100 MMPPPP. MMPPPPPPPPPPPPPPPPPP VVPPPPPPPP PPPPPPPPPPPPPPPP PPPPiiPPiiiiPPii 0 To check if Load 3 must ( be = disconnected, 0%) 0% the 50% -G waits This condition for the amount is met 8000 of time programmed in the Min. connection time variable and then checks if the following condition is met: ( 4000 xx100 = 40%) 40% 90% This condition is met Condition 3 : ( 8000 xx100 = 80%) 80% 90% This condition is met PPgggggggg < MMrraa GGgggggg ccccccccggggccccccggcccc PPccccccccccccccccgg ggggrrrrrrrr ( ( = 10%) 10% 50% This condition is met = 60%) 60% 20% This condition is not met Condition 3 ( = 0%) 0% 50% Action This condition is met The Load 3 stays connected. ( 6000 xx100 = 60%) 60% 90% This condition is met ( = 0%) 0% 50% This condition is met ( 8000 xx100 = 80%) 80% 90% This condition is met

68 8.- MODBUS MAP All Modbus map addresses are shown in hexadecimal format MEASURE PARAMETERS These parameters only accept the read function POWER AND REGULATION PERCENTAGE Table 23: Modbus memory map: Power. Parameter L1 L2 L3 III Units Active power of the grid (1) A-6B W with 3 decimals Active power measured in the load 6C-6D 6E-6F W with 3 decimals Active photovoltaic power A-7B W with 3 decimals (1) The sign indicates if it is consumed or generated. Table 24:Modbus memory map: Regulation percentage Parameter L1 L2 L3 Global Units Regulation percentage 7D 7E 7F 7C % ENERGÍA, TENSIÓN Y CORRIENTE Table 25:Modbus memory map: Energy. Parameter Address Units Active three-phase energy measured in the load kwh with 3 decimals Active three-phase energy consumed from the grid kwh with 3 decimals Three-phase active photovoltaic energy kwh with 3 decimals Active three-phase energy injected into the grid kwh with 3 decimals Table 26:Modbus memory map: Current and voltage. Parameter Channel 1 Channel 2 Channel 3 Units Current measured in the A A Voltage measured in the 8B 8C 8D V with 1 decimals PARAMETERS MEASURED IN THE LOAD Table 27:Modbus memory map: Parameters measured in the load (Table 1) Parameter L1 L2 L3 III Units Power Factor (PF) 8E-8F with 3 decimals Voltage THD A-9B 9C-9D - % with 1 decimals Current THD 9E-9F A0-A1 A2-A3 - % with 1 decimals Reactive power A4-A5 A6-A7 A8-A9 - kvar with 3 decimals Apparent power AA-AB AC-AD AE-AF - kva with 3 decimals 68

69 Table 28:Modbus memory map: Parameters measured in the load (Table 2) Parameter Address Units Three-phase inductive reactive power B0-B1 kvarl with 3 decimals Three-phase capacitive reactive power B2-B3 kvarc with 3 decimals Three-phase apparent power B4-B5 kva with 3 decimals Frequency Hz with 1 decimals voltage L1-L2 B6-B7 V with 1 decimals voltage L2-L3 B8-B9 V with 1 decimals voltage L3-L1 BA-BB V with 1 decimals Imported three-phase inductive energy BC-BF kvarlh with 3 decimals Imported three-phase capacitive energy C0-C3 kvarch with 3 decimals Imported three-phase apparent energy C4-C7 kvah with 3 decimals Exported three-phase inductive energy C8-CB kvarlh with 3 decimals Exported three-phase capacitive energy CC-CF kvarch with 3 decimals Exported three-phase apparent energy D0-D3 kvah with 3 decimals PARAMETERS MEASURED IN THE GRID Table 29:Modbus memory map: parameters measured in the grid (Table 1) Parameter L1 L2 L3 Units Voltage 12C-12D C-13D V with 1 decimals Current 12E-12F E-13F A with 1 decimals Reactive power kvar with 3 decimals Power factor A-13B with 3 decimals Voltage THD % with 1 decimals Current THD 15A-15B 15C-15D 15E-15F % with 1 decimals Table 30:Modbus memory map: parameters measured in the grid (Table 2) Parameter Address Units Three-phase inductive reactive power kvarl with 3 decimals Three-phase capacitive reactive power kvarc with 3 decimals Three-phase apparent power kva with 3 decimals Three-phase power factor 14A-14B with 3 decimals Frequency 14C-14D Hz with 1 decimals voltage L1-L2 14E-14F V with 1 decimals voltage L2-L V with 1 decimals voltage L3-L V with 1 decimals Imported three-phase inductive energy kvarlh with 3 decimals Imported three-phase capacitive energy kvarch with 3 decimals Imported three-phase apparent energy B kvah with 3 decimals Exported three-phase inductive energy 16C-16F kvarlh with 3 decimals Exported three-phase capacitive energy kvarch with 3 decimals Exported three-phase apparent energy kvah with 3 decimals 69

70 PHOTOVOLTAIC PARAMETERS Table 31:Modbus memory map: Photovoltaic parameters (Table 1) Parameter L1 L2 L3 Units Voltage A0-1A1 V with 1 decimals Current A-19B 1A2-1A3 A with 1 decimals Reactive power C-19D 1A4-1A5 kvar with 3 decimals Power factor E-19F 1A6-1A7 with 3 decimals Voltage THD 1B8-1B9 1BA-1BB 1BC-1BD % with 1 decimals Current THD 1BE-1BF 1C0-1C1 1C2-1C3 % with 1 decimals Table 32:Modbus memory map: Photovoltaic parameters (Tabla 2) Parameter Address Units Three-phase inductive reactive power 1A8-1A9 kvarl with 3 decimals Three-phase capacitive reactive power 1AA-1AB kvarc with 3 decimals Three-phase apparent power 1AC-1AD kva with 3 decimals Three-phase power factor 1AE-1AF with 3 decimals Frequency 1B0-1B1 Hz with 1 decimals voltage L1-L2 1B2-1B3 V with 1 decimals voltage L2-L3 1B4-1B5 V with 1 decimals voltage L3-L1 1B6-1B7 V with 1 decimals Imported three-phase inductive energy 1C4-1C7 kvarlh with 3 decimals Imported three-phase capacitive energy 1C8-1CB kvarch with 3 decimals Imported three-phase apparent energy 1CC-1CF kvah with 3 decimals Exported three-phase inductive energy 1D0-1D3 kvarlh with 3 decimals Exported three-phase capacitive energy 1D4-1D7 kvarch with 3 decimals Exported three-phase apparent energy 1D8-1DA kvah with 3 decimals DEVICE INFORMATION Table 33:Modbus memory map: Device information Parameter Address Version 2AF8 70

71 8.2.- CONFIGURATION PARAMETERS These parameters accept the read and write functions STATE OF RELAYS Parameter Estado de los relés 1,2 y 3 Table 34:Modbus memory map: State of relays (Table 1) Address BB8 Bit Description State 0x0001 Relay 1 0x0002 Relay 2 0x0004 Relay 3 1: Activated 0: Deactivated Note: The state of the relays can only be modified when non-critical load management is in manual mode. Note: Higher bits (bit 3, 4, etc.) must be 0 in the write function. Table 35:Modbus memory map: State of relays (Table 2) Parameter Address State Status of relay 4: reverse current relay 1 1: Activated 0: Deactivated OTHER PARAMETERS Table 36:Modbus memory map: Other parameters Parameter Address Injection Margin E8 Activates remote control E6 Allowed injection E7 Note: To save in the memory the change in Injection Margin through Modbus, you need to restart the unit. 71

72 9.- TECHNICAL FEATURES AC power supply Rated voltage V ~ Frequency Hz Consumption VA Installation category CAT III 300V DC power supply Rated voltage Consumption Installation category 12 V 4 W CAT III 300V Voltage measurement circuit Voltage measurement margin V ~ Frequency measurement margin Hz Input impedance 400 kω Minimum measurement voltage (Vstart) 10 V ~ Installation category CAT III 300V Current measurement circuit Nominal current (In) / 250 ma Overcurrent 105% In Maximum current, impulse < 1s According to the current sensor Minimum measurement current (Istart) 10 ma Installation category CAT III 300 V Measurement accuracy Voltage measurement 0.5% Current measurement 0.5% Power measurement 0.5% Energy measurement 1% Relay outputs Quantity 4 Maximum voltage open contacts 250 V ~ Maximum current 6 A ~ Maximum switching power 1500 W Electrical life 60 x 10 3 cycles Mechanical life 10 x 10 6 cycles Digital inputs Quantity 4 Type Potential-free contact Insulation Optoisolated Communications User interface Ethernet Communications with the inverter Bus RS-232/RS-485/RS-422 Baud rate Depending on the inverter (See application notes) Stop bits 1 Parity No parity 72

73 Communications (Continuation) Communications with other devices Bus RS-485 Protocol Modbus Baud rate Stop bits 1 Parity No parity Display Keyboard LED User interface Alphanumeric LCD 4 keys 6 LED Environmental features Operating temperature -25ºC ºC Storage temperature -40ºC ºC Relative humidity (without condensation) 95% Maximum altitude 2000 m Protection degree IP51 Mechanical features Dimensions (mm) Figure 72 Weight 250 gr Enclosure UL94 - V0 self-extinguishing plastic Fixing DIN rail Figure 72: Dimensions. Standard Electromagnetic compatibility (EMC) -- Part 6-4: Generic standards - Emission standard for industrial environments (IEC :2006). Safety requirements for electrical equipment for measurement, control and laboratory use -- Part 1: General requirements Electromagnetic compatibility (EMC) -- Part 6-2: Generic standards - Immunity for industrial environments UNE-EN :2007 UNE-EN :2011 UNE-EN :

74 10.- TECHNICAL SERVICE In the case of any query in relation to unit operation or malfunction, please contact the CIRCUTOR, SA Technical Support Service. Technical Assistance Service Vial Sant Jordi, s/n, Viladecavalls (Barcelona) Tel: ( España) / (outside of Spain) sat@circutor.com 11.- GUARANTEE CIRCUTOR guarantees its products against any manufacturing defect for two years after the delivery of the units. 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 units has been improperly used or the storage, installation and maintenance instructions listed in this manual have not been followed. Improper usage is defi ned as any operating or storage condition contrary to the national electrical code or that surpasses 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 classifi cation; - Poor ventilation and/or excessive temperatures; - Improper installation and/or lack of maintenance; - Buyer repairs or modifi cations without the manufacturer s authorisation. 74