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- 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 CDP 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.
3�- INSTALLATION OF THE DEVICE 3.1.- PRELIMINARY RECOMMENDATIONS The device must only be installed and maintained by authorised and quali- fied 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 vari- ous warnings indicated in this instruction manual.
Do not use the device until it is fully installed. 3.3.- DEVICE TERMINALS 3�3�1�- CDP-0 MODEL Table 3:List of CDP-0 terminals� Device terminals 1: VL1, Voltage measurement 22: L3, current measurement...
3�3�2�- CDP-G AND CDP-DUO MODELS Table 4:List of terminals: DCP-G and CDP-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)
Current generated by the inverter + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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...
Current generated by the inverter + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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...
3�4�3�- THREE-PHASE CONNECTION SCHEME WITH MC3 TRANSFORMERS Current consumed by the user + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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...
3�4�4�- THREE-PHASE CONNECTION SCHEME WITH MC1 TRANSFORMERS Current consumed by the user + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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...
3�4�5�- COMMUNICATIONS CONNECTION The CDP 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. LINK COM 1 COM 2...
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3�4�5�2�- 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-485 Note: For the proper working of RS-485 communications, always connect the GND terminal. 3�4�5�3�- Connection diagram Connection diagram with an inverter through channel R2, RS-422 protocol and a CVM Mini, channel R3, RS-485 protocol.
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To ensure that the CDP 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 Value Peripherical number Configurable Baud rate Configurable Bits Parity Stop bits 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.
4�- OPERATION 4.1.-OPERATING PRINCIPLE One of the main features of the CDP is that it can measure all the energy flows of the installa- tion: 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 CDP can adapt generation to energy consumption with the aim of achieving zero grid in- jection The CDP generates a database with all the power and energy information for every measuring point, including the inverter’s regulation percentage.
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White alarm If power is injected into the grid during the period defined by the Stop time parameter, relay icon 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...
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Permanent status alarm Power Redundant injected into state relay the grid ALARM activated Figure 11:Alarm reconnection sequence� The following indications appear in the CDP when the reconnection sequence has been completed: Alarm LED: The alarm LED is activated in the CDP indicating that power is being injected into the grid and that the reconnection sequence is complete.
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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. White alarm icon 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 Orange alarm possible to unlock it.
4�1�3�- CDP-G MODEL : MANAGEMENT OF NON-CRITICAL LOADS This functionality allows you to add non-critical loads depending on if more power can be ob- tained 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...
100 ≤ . ⋅ 100 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 man- ...
4.2.- APPLICATIONS The CDP 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 CDP 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 CDP only measures the power con- sumed by the user.
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Current generated by the inverter + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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.
Figure 21:Connection diagram for the basic three-phase system�� Current consumed by the user + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM 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 con- sumption data, so the reverse current relay feature will be disabled.
Figure 23:Connection diagram for the three-phase system with monitoring� Current consumed by the user + 12 V - DC Power Supply LINK CDP-0 COM 1 COM 2 ALARM Auxiliary Power Supply ~ Figure 24:Connection diagram for the three-phase system with monitoring�...
4.3.- KEYBOARD The CDP has four keys so that the user can browse through the different screens on the unit. LINK COM 1 COM 2 ALARM 1 2 3 4 5 6 7 Keyboard Figure 25: CDP keyboard� Table 13: Teclado Function ▲...
4.4.- LEDs The CDP has six LEDs so that it is easy for the user to identify the operating status of the de- vice. LINK COM 1 COM 2 LEDs ALARM 1 2 3 4 5 6 7 Figure 26: CDP LEDs Table 14: LEDs Function 1 s.
5�- DISPLAY 5.1.- SINGLE-PHASE MODE If the device is configured to work in single-phase mode, the default screen is shown in Figure Power corresponding to the CDP Percentage regulation of the nominal percentage regulation value power of the inverter. Power consumed by Power consumed Power generated by the user in kW with from the grid in kW the inverter in kW 1 decimal.
5.2.- THREE-PHASE MODE 5�2�1�- 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 CDP Percentage regulation of the nominal percentage regulation value power of the inverter.
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� 5.3.- DISPLAY MENU : MEASURES shows the main screen of the Measures menu, displaying all measurement Figure 32 parameters of the device.
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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)
5.4.- DISPLAY WEBSIDE You can enter the device web site from any browser using the IP address. https://xxx.xxx.xxx.xxx Where xxx.xxx.xxx.xxx is the IP address assigned by the user. Note: Use Google Chrome. Note: When you access the CDP web site for the first time, you will have to accept the security certificate so that you can use secure connections.
Power consumed from the grid Data Logger Figure 34: Display Webside: CDP-0 model� Note: When the CDP 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...
5�4�2�- CDP-G MODEL Power corresponding to the CDP percenta- Percentage regulation of the nominal ge regulation value 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: CDP-G model�...
5�4�3�- CDP-DUO MODEL Percentage regulation of the nominal power of the inverter Power corresponding to the CDP percentage regulation value Power generated by the inverter Power consumed by the user Consumed power of the secondary Power consumed from the grid generator (Secondary).
5�4�4�- DATA LOGGER This function allows you to install only the CDP 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.
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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 CDP can act as a Data Logger and record the electrical parameters that it measures every 1, 5, 10 or 15 minutes. If the CDP is configured to work in three-phase mode and the information from the external CVM Mini is not available, “nan”...
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D1: Dynamic mode, relay activated. 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 instal- lation. shows that during periods in which insolation is minimum, the user’s consumption Figure 39 ...
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shows the above in more detail: as insolation increases (the red curve), grid con- Figure 40 sumption (black line) decreases and the energy generated by the inverter increases. Figure 40:Detail of the CDP operation� Instruction manual...
6�- CONFIGURATION You can configure the device on the configuration web site (see “ 6.3.- CONFIGURATION WEB ”). SITE Only the IP is configured with the keypad in the Network menu Figure 41 Figure 41: Configuration menu: Network 6.1.- CONFIGURATION MENU: NETWORK shows the main screen of the Network configuration menu, where the Ethernet Figure 42 connectivity parameters are configured. Figure 42: Network configuration menu, main screen. Press the ► key to enter the configuration menu.
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 , will be displayed, which allows the modifica- Figure 43...
6�1�3�- 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 ▼...
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 , will be displayed, which allows the modifica- Figure 43 tions to be saved and exits the configuration mode.
Figure 48 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, www.circutor.com Figure 48: Firmware upgrade screen� Instruction manual...
During the upgrade process, you will see the screen in Figure 49 Figure 49: Screen during the upgrade process� Note: If the CDP 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�...
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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.
6�3�3�- 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. ...
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the panels are not receiving sufficient radiation, rather than requesting 2 kW from each inverter, the CDP 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.
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Figure 55: Power Control parameters (CDP-DUO) When the device has no active digital inputs, the CDP-DUO operates with the injection para- meters of Mode 1 (Main). If you activate digital input 1 (terminal no. 28 in ), the unit will operate with the injection Tabla 3 parameters configured in Mode 2 (Secondary).
6�3�4�- POWER CONTROL & DATA LOGGER : REVERSE CURRENT RELAY In this section it is configured the parameters for the inverse current control relay, Figure 56 (See “ ”) 4.1.2.- 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 neg- ative power value in the grid, it desactivates the inverse current relay to disconnect the inverter.
6�3�5�- POWER CONTROL & DATA LOGGER : AUXILIAR LOADS RELAYS You can configure the optional management of non-critical loads in this section, . (See Figure 57 “4.1.3.- ”) CDP-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: ...
● 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.
● Enable external analyzer When you enable this option, an external analyser is enabled as the measuring device, instead of the CDP. ● Primary current Use this parameter to configure the value of the primary of the load analyser’s current trans- former. ● Device number Enter the peripheral number of the external analyser in this parameter, if the corresponding option has been activated Enable external analyzer.
● Device number Enter the peripheral number of the external analyser in this parameter, if the corresponding option has been activated Enable external analyzer. 6�3�10�- 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. 6�3�11�- NETWORK & SECURITY SETUP : NETWORK You can configure the network parameters of the CDP in this section, Figure 63 Figure 63: Network setup parameters�...
● 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.
● New password Enter the new password in this parameter. ● Repeat password Enter new password again in this parameter. 6�3�13�- SAVE SETUP, LOAD DEFAULT SETUP y RESET CDP There are 3 buttons at the bottom of the configuration web site, Figure 65� Figure 65: Save setup, Load default setup and Reset CDP buttons� ●...
7�- CDP-G MODEL : OPERATING EXAMPLES 7.1.- 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 pro- duction to supply 1 non-critical load, such as a heat pump. ...
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 pro- duction to supply 3 non-critical loads: Load 1: 2000 W water pump Load 2: 2000 W heat pump ...
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100 ≤ . Tabla 22 (Continuación): Programación del CDP-G. Parameter Value Auxiliar Loads Relays: Reconnecting time 5 minutes 100 ≤ . ...
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Loads 4000 W 100 ≤ . 4000 W Load 1 2000 W Load 2 2000 W ⋅ 100 2000 W ...
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= 0%) 0% ≤ 50% This condition is met 6000 100 = 60%) 60% ≤ 90% This condition is met In this case: 6000 10000 Condition 2 : = 0%) 0% ≤ 50% This condition is met 8000 If Injection margin = 0% Grid Power <...
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= 0%) 0% ≤ 50% This condition is met 100 = 40%) 40% ≤ 90% This condition is met 4000 6000 10000 100 = 40%) 40% ≤ 90% This condition is met 4000 ...
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· 100 G rid ∑ 100 ≤ . Loads 4000 W 100 = 40%) 40% ≤ 90% This condition is met 4000 4000 W Load 1...
8�- MODBUS MAP All Modbus map addresses are shown in hexadecimal format. 8.1.- MEASURE PARAMETERS These parameters only accept the read function. 8�1�1�- POWER AND REGULATION PERCENTAGE Table 23: Modbus memory map: Power� Parameter Units Active power of the grid 64-65 66-67 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 96-97 Hz with 1 decimals...
8�1�5�- PHOTOVOLTAIC PARAMETERS Table 31:Modbus memory map: Photovoltaic parameters (Table 1) Parameter Units Voltage 190-191 198-199 1A0-1A1 V with 1 decimals Current 192-193 19A-19B 1A2-1A3 A with 1 decimals Reactive power 194-195 19C-19D 1A4-1A5 kvar with 3 decimals Power factor 196-197 19E-19F 1A6-1A7...
8.2.- CONFIGURATION PARAMETERS These parameters accept the read and write functions. 8�2�1�- STATE OF RELAYS Table 34:Modbus memory map: State of relays (Table 1) Parameter Address Estado de los relés 1,2 y 3 Description State 0x0001 Relay 1 1: Activated 0x0002 Relay 2 0: Deactivated...
9�- TECHNICAL FEATURES AC power supply Rated voltage 110 ... 240 V ~ Frequency 50 ... 60 Hz Consumption 6 ... 10 VA Installation category CAT III 300V DC power supply Rated voltage 12 V Consumption Installation category CAT III 300V Voltage measurement circuit Voltage measurement margin 10 ...
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Communications (Continuation) Communications with other devices RS-485 Protocol Modbus Baud rate 4800-9600-19200-38400 Stop bits Parity No parity User interface Display Alphanumeric LCD Keyboard 4 keys 6 LED Environmental features Operating temperature -25ºC ... +70ºC Storage temperature -40ºC ... +85ºC Relative humidity (without condensation) Maximum altitude 2000 m Protection degree...
• 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 pos- sible failure, improper installation or “improper usage”...
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