Operating instructions EN
Contents
1. Operating instructions Solar charge controller 10A 15A 20A 30A 739 704 11 10 Contents 1 et 1 2 6 2 1 6 2 2 6 2 3 6 2 4 6 2 5 6 2 6 6 2 7 6 2 8 6 2 9 7 1 FA 7 3 7 4 7 5 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 10 11 Safety instructions Safety instructions are identified as follows General safety instructions Exclusion of liability Area of application Controller protection functions Installation Mounting location Connecting the controller Grounding Operation Display and control elements Display windows SOC window Voltage window Module current Charging current Load current Ah Battery charge meter Ah Battery discharge meter Deep discharge protection advance warning Load disconnection Functions SOC calculation Charge control Deep discharge protection Night light function Daylight function Configuring the controller Accessing and changing settings Operating modes Setting the battery type to Gel Liquid Night light settings Daylight settings Restoring default values presetting Self test Serial number query Error messages Legal guarantee Technical data Subject to change without notice OAMADMDAAAAAANNNADUN NP PW Ww ww ee ae ee ee ee eet ANUBWWWNNNNNABFTOTDOCCOO 739 704 11 10 1 Safety instructions 1 1 Safety instructions are identified as follows In this manual safety instructions for personal safety are identified with this symbol2. 8 3 Setting the battery type to Gel Liquid The default setting is Li 5 m Setting the battery type affects the final charge co moO voltage of the controller If Boab Von Son Lb you use a Gel or AGM battery then you must set the battery type to GEL Please note An incorrect battery type setting can damage the battery 8 4 Night light settings This setting offers three possibilities in the following sequence OFF The function is deactivated default e Load switch on duration selection from 1 to 12 hours lower middle Fig ON The load output remains switched on all night c gt Iic gt lie gt l mre mw ies ton ee 12 739 704 11 10 8 5 Daylight settings pea gt 8 B gt 7 T mZ i E th The daylight function has the following settings OFF The function is deactivated default e 1h 12 h Switch on point before detection of daytime upper right Fig 8 6 Restoring default values presetting Calling the presetting function PRE deletes any ai 4 previous settings and restores the settings in the charge controller to the factory defaults oc The factory defaults are FFG SOC control Li battery Night light OFF Daylight OFF The self test can be used to check if the charge controller is functioning correctly It also allows localisation of possible errors The self test can only be pe
3. Instructions relating to the functional safety of the system and the controller are in bold type 1 2 General safety instructions Be sure to observe the following instructions when installing the l controller and handling the batteries Incorrect handling of batteries results in a danger of explosion Escaping battery acid can result in acid burns Be sure to always keep children away from batteries and acid Smoking open flames and open lights are not permitted when handling batteries Avoid the generation of sparks and wear eye protection during installation Be sure to always observe and follow the handling instructions in the usage instructions and on the battery Use well isolated tools only Do not use measurement equipment you know to be damaged or defective The charge controller s constructive protective measures can dete riorate if it is not operated as specified by the manufacturer Factory labels and markings may not be altered removed or ren dered unreadable All work must be carried out in accordance with the national and the relevant local electrical regulations f the device is installed abroad information on rules and protective measures must be obtained from the corresponding institutions authorities Do not start the installation until you are sure that you have under stood all technical details in these instructions and always perform the work in the sequence described in these instructions The manual must
4. gt gt Overtemperature Allow the controller to cool e The controller has down Check for possible switched off the causes of overheating mount mz E W load due to internal ing location other heat overheating sources Possibly reduce the charging current or load cur rent Make sure the controller is adequately ventilated E Battery voltage too Check installation Check the 6 low battery voltage and manually a Voltage lt 10 5 Vor recharge the battery if neces ED lt 21 0V sary Loads directly connected to the battery can cause deep discharge Battery voltage too Check installation Check the e high battery voltage and check any enc Voltage gt 15 5 Vor additional charging sources if ie gt 31 0V present cls Excessive load cur Reduce the load current at the e rent The permissible load output cno load current of the The load may cause current m pai controller was peaks exceeded causing the load output to be switched off Try reconnecting the load 739 704 11 10 15 Mea Excessive module current The permissible input current of the con troller was exceeded Cause Remedy Reduce the charging current or module power Short circuit at load output Rectify short circuit Discon nect and reconnect the load Moon symbol during daylight hours e Short circuit at module input e No module con nected Module connecte
5. in a 24 V system It is always a good idea to cover the solar modules When laying cables ensure that no damage occurs to any of the I constructional fire safety measures present in the building The controller must not be installed or operated in wet rooms e g bathrooms or in rooms where inflammable gases may generate e g from gas bottles paint varnish solvents etc Do not store any of the mentioned materials in rooms where solar controllers are installed Om 0 O20 Connect the individual components to the connection with the correspond ing symbols Important The battery can be damaged when the connection 1 cable is short circuited Install a fuse in the battery connection cable to protect the battery Observe the following connection sequence when commissioning the system 1 Connect the battery to the charge controller plus and minus 2 Connect the photovoltaic modules to the charge controller plus and minus 3 Connect the load to the charge controller plus and minus Follow the reverse procedure when uninstalling Note If you do not follow the correct connection sequence automatic adjustment for 12 V 24 V systems will not work correctly and the bat tery can be damaged 5 3 Grounding When constructing a stand alone solar energy system from a technical point of view the controller does not necessary need to be grounded However be sure to alw
6. into the battery Displays the current being consumed from the load output 6 2 6 Ah Battery charge meter Displays the total Ah charged into the bat tery since initial installation or the last reset of the meter Pressing and holding both but tons for 3 seconds resets the meter to 0 The value is retained when the battery is discon nected After reaching a value of 99 9 kAh the meter jumps back to 0 Ah meter Displays the total Ah discharged via the load output since initial installation or the last reset of the meter Pressing and holding both buttons for 3 seconds resets the meter to 0 The value is retained when the battery is disconnected After reaching a value of 99 9 kAh the meter jumps back to 0 Ah 739 704 11 10 6 2 8 Deep discharge protection advance warning The following symbols flash in the various operating modes to provide advance warn ing of deep discharge SOC bar SOC with bar display Voltage value Voltage control e Voltage value and voltage bar display Voltage control with bar display The face symbol still looks happy The following symbols flash when the deep discharge protection is active Bar display not in Voltage control mode Battery symbol Right arrow Load symbol Alphanumeric value The face symbol remains sad until the switch on threshold is reached 739 704 11 10 7 Functions This section describes the basic functions of the charg
7. other windows After the last window the first window is displayed once more Press the right button when you want to change settings in the currently displayed window The display then starts flashing You can now use the left button to select different settings You must press the right button to save the settings you have made The display then stops flashing You can return to the normal display by waiting for 30 seconds or by press ing and holding the left button for 3 seconds This applies to all windows The settings are retained when the battery is disconnected 8 2 Operating modes gt gt gt l gt gt gt Sse SESE or O 5or DS L tot ok The device is supplied with SOC control preset This means that the charging method and deep discharge protection are controlled by the calculated SOC value If loads are directly connected to the battery and not to the controller or the battery is also charged from a different source then the Voltage control with bar display operating mode must be selected Otherwise the SOC calculation may be incorrect Notes on the Voltage control with bar display operating mode Each of the 10 bar segments represents a particular voltage The voltage values are described in Section Technical data Bar display scaling e If the voltage lies exactly between two bar segments then the display may jump back and forth between the two segments
8. OC gt 50 gt 12 5V 25 0V bar display mode 10 bar segments gt 12 9V 25 8V 9 bar segments gt 12 8V 25 6V 8 bar segments gt 12 7 V 25 4 V 7 bar segments gt 12 5 V 25 0 V 6 bar segments gt 12 0 V 24 0 V 5 bar segments gt 11 7 V 23 4 V 4 bar segments gt 11 1 V 22 2 V 3 bar segments gt 11 0 V 22 0 V 2 bar segments lt 11 0 V 22 0 V Mechanical data 1 bar segment Degree of protection IP32 Mounting method Wall mounting Weight 350g Casing Recyclable plastic case Dimensions L x W x H 187 x 96 x 44 mm Mounting hole clearances 60 mm vertical 177 mm horizontal Connection terminals fine single core 16 mm 25 mm AWG 6 4 739 704 11 10 739704
9. also be available to third parties for all work performed on the system This manual is a component of the system controller and must be included with it when sold on 2 Exclusion of liability The manufacturer cannot monitor the compliance to this manual nor the conditions and methods of installation operation usage and maintenance of the system controller Improper installation of the system may result in damage to property and as a result to bodily injury Therefore we assume no responsibility or liability for loss damage or costs which result from or are in any way related to incorrect installation improper operation or incorrect use and maintenance Similarly we assume no responsibility for patent right or other right in fringements of third parties caused by usage of this system controller The manufacturer reserves the right to make changes to the product tech nical data or assembly and operating instructions without prior notice Please note Opening manipulating or attempting to repair the device or operating the device in an improper manner will invalidate all legal guarantee claims 739 704 11 10 3 3 Area of application These instructions describe the functions and installation of a charge controller for photovoltaic PV systems to be used for charging 12 V or 24 V lead acid batteries in the hobby and leisure residential business com mercial and small company areas The charge controller is only s
10. ay and night so a certain amount of tolerance is required This is especially the case when the natural conditions are interrupted by manual intervention such as disconnection or covering of the solar modules Despite this the controller recalculates the reference point for the daylight function after each night day transition and therefore automatically adapts to the natural conditions after a few days Note The daylight function is not executed when the time periods for the night light and daylight functions overlap Overlap means The switch off point of the night light function lies after the switch on point of the daylight function When the night light function ends then the daylight function will also end An overlap of the time periods can be caused by e Incorrect setting of the night light and daylight time periods by the user Seasonal reductions in the length of the night Poor weather heavy cloud Covering of the module snow Alternatively Set the night light function to ON load output remains switched on all night regardless of the daylight function settings 739 704 11 10 11 8 Configuring the controller The following section describes the configuration settings that can be performed on the controller 8 1 Accessing and changing settings Pressing and holding the left button for at least 3 seconds brings you to the first settings window Operating mode Further pressing of the left button displays
11. ays observe the applicable respective national regu lations regarding grounding All positive connections can be grounded but with negative grounding only one connection can be grounded Caution 1 Danger of damage to the controller Make sure that no common connection exists for the Module Minus Battery Minus and Load Minus connections e g via a ground connection H T AAAAAAR TWVVVTy AAAAAAR ih In ai WET 6 739 704 11 10 6 Operation The display shows numerous types of system data using symbols and num bers All settings and display windows are controlled via the two buttons 6 1 Display and control elements Display window for o system information and error messages Button for switch ing between the display windows or for accessing settings e Manual load switch or confirmation button when performing settings 6 2 Display windows Symbols for current direction Battery symbol Sun Charge Day Moon Night Load symbol Face symbol for Tool symbol for system status error messages SOC bar display SOC state of charge Units display 7 segment display for text and numerals The display windows contain different types of system information The left button can be used to switch between the different d
12. d with incorrect polarity Correct the short circuit at module input Sun symbol appears after 10 s Connect the module Sun symbol appears after 15 min Connect the module with the correct polarity Pts No battery is con nected to the control ler or the connection to the battery is interrupted Controller is supplied only by the solar modules Connect the battery and replace the fuse in the battery cable if necessary The battery is con nected to the control ler with the wrong polarity Disconnect the battery and reconnect it to the controller with the correct polarity 739 704 11 10 10 Legal guarantee In accordance with German statutory regulations there is a 2 year legal guarantee on this product for the customer The seller will remove all manufacturing and material faults that occur in the product during the guarantee period and affect the correct functioning of the product Natural wear and tear does not constitute a malfunction No legal guarantee can be offered if the fault can be attributed to third parties unprofessional installation or commissioning incorrect or negligent han dling improper transport excessive loading use of improper equipment faulty construction work unsuitable construction location or improper op eration or use Legal guarantee claims shall only be accepted if notification of the fault is provided immediately after it
13. e ambient temperature must exist at both the controller and the battery If this is not possible for installation reasons then an external temperature sensor is available as an optional accessory Do not install the controller outside The device must be mounted protected from moisture dripping water spray rainwater and direct or indirect heat ing e g from direct sunlight The device generates heat during normal operation The rear ventilation required for cooling the device must not be hindered by the mounting loca tion or by installation in an additional casing A free space of at least 15 cm on all sides of the device must be provided to ensure the necessary circulation of air for cooling The permissible ambient temperature must be adhered to at the mounting location 15 cm 15 cm 15 cm The integrated LC display should be protected from UV radiation e g sun ight Long term exposure to UV radiation can permanently discolour the LC display 739 704 11 10 5 5 2 Connecting the controller Solar modules generate electricity under incident light The full j voltage is present even when the incident light levels are low You should therefore work carefully and avoid creating sparks Observe the appropriate safety precautions Double the normal system voltages can be present during 1 installation and electrical connection of the DC side of the photovoltaic system up to 24 V in a 12 V system and up to 48 V
14. e controller Operation of the controller is described under the respective menu items in Section Configuring the controller 7 1 SOC calculation The controller monitors various battery parameters V during normal operation and uses this information to calculate the state of charge of the battery SOC state of charge The state of charge represents the amount of energy currently available in the battery The device uses a continuous learning process to automatically compensate for changes in the system e g through ageing of the battery This SOC provides you with an accurate overview of the charge state of the battery at all times The controller also uses the SOC information for selecting the charging method and for deep discharge protection to provide optimum treatment of the battery If one or more of the parameters cannot be correctly measured e g because a load or charging source is directly connected to the battery then the SOC calculation will not be correct The controller can then be configured to use a simpler voltage controlled charging process the Voltage control with bar display mode see Section Operating modes The SOC calculation is restarted each time the controller is commissioned 7 2 Charge control The controller performs constant voltage charging of the battery The maximum current available from the charging source is used for charging the battery until the final charge voltage is reached Once charge con
15. essary e Defective controller Contact your dealer for a more detailed examination or replacement 010 Defective load output Possible causes e Load was not disconnected before the test Check this and repeat the test if necessary Defective controller Contact your dealer for a more detailed examination or replacement 001 Defective electronic battery fuse Possible causes Solar module and load were not disconnected before the test Check this and repeat the test if necessary Defective controller Contact your dealer for a more detailed examination or replacement 011 101 110 111 Solar module or load were not disconnected before the test Check this and repeat the test if necessary e Defective controller Contact your dealer for a more detailed examination or replacement 8 8 Serial number query an Every controller has a unique serial number that can be queried via this window Press the right button and the Sn will start to flash The serial number can now be queried by pressing the left button The numerals are displayed sequentially 1 2 3 4567 8 The display can be paused and continued using the right button Note the entire numeric sequence for the full serial number 14 739 704 11 10 9 Error messages Please note Never open the device to find faults and do not attempt to replace components yourself Incorrectly performed repairs can res
16. f Load switch off gt 85 C PR1010 PR1515 PR 2020 PR 3030 Max constant module cur 10A 15A 20A 30A rent at 25 C Max constant load current 10A 15A 20A 30 A at 25 C Load switch on lt 75 C Data on final charge voltage Depending on configured Gel battery GEL Liquid electrolyte Li equal for 2 h battery type Normal charging float 13 9V 27 8V 13 9V 27 8V Boost charging boost 14 4V 28 8V 14 4V 28 8V for2h Equalisation charging 14 7 V 29 4 V 30 day maintenance charg ing when necessary 14 4 V 28 8 V for 2 h 14 7 V 28 8 V for 2 h Temperature compensation Charge control activation 4 mV per K and cell internal sensor pre sent optional external sensor possible Activation thresholds of the SOC control Voltage control different charging modes Normal charging SOC 70 gt 127 Vor gt 25 4 V Boost charging SOC 11 7 V 12 7 Vor 40 69 23 4V 25 4V Equalisation charging SOC lt 40 lt 11 7 V or 23 4 V 30 day maintenance charging If no compensation charging or boost charging has taken place in the last 30 days 739 704 11 10 Load disconnection Bar display scaling only in Voltage control with gt 13 0 V 26 0 V SOC control Voltage control Load disconnection advance SOC lt 40 lt 11 7 V 23 4V warning Load disconnection SOC lt 30 lt 11 1V 22 2V Load reconnection S
17. is discovered Guarantee claims are to be directed to the seller The seller must be informed before guarantee claims are processed For processing a guarantee claim an exact fault description and the invoice delivery note must be provided The seller can choose to fulfil the legal guarantee either by repair or replace ment If the product can neither be repaired nor replaced or if this does not occur within a suitable period in spite of the specification of an extension period in writing by the customer the reduction in value caused by the fault shall be replaced or if this is not sufficient taking the interests of the end customer into consideration the contract is cancelled Any further claims against the seller based on this legal guarantee obliga tion in particular claims for damages due to lost profit loss of use or indirect damages are excluded unless liability is obligatory by law 739 704 11 10 17 11 Technical data The manufacturer reserves the right to make technical changes Electrical data Operational voltage 12 V or 24 V automatically detected 12 V voltage range 6 9V 17 2V 24 V voltage range 17 3V 43V Permissible ambient temperature range 10 C to 50 C Permissible storage temperature range 20 C to 80 C Own consumption in mA 12 5mA PWM frequency 30 Hz Maximum input voltage lt 47V Minimum battery voltage 6 9V Overtemperature switch of
18. isplay windows After the last window the first window is displayed once more The following figures show examples of system information in the SOC con trol operating mode The following differences exist in the Voltage control and Voltage control with bar display operating modes Voltage control The windows do not contain any SOC bar display The SOC window shows the battery voltage instead of the SOC Voltage control with bar display The bar display shows the battery voltage in all windows The SOC window shows a numerical value for the battery voltage instead of the SOC Notes Changing the operating mode see Section Accessing and changing settings e Scaling of the bar display in the Voltage control with bar display mode see Section Technical data Bar display scaling Note that the accuracy of the bar display cannot be compared with the accuracy of a measuring device 739 704 11 10 7 6 2 1 SOC window Displays the charge state day night status and load on off status In the Voltage control operating mode the battery voltage is displayed instead of the SOC value In the Voltage control with bar display oper ating mode the battery voltage is displayed both alphanumerically and as a bar display Displays the battery voltage measured by the controller Displays the solar module output current Displays the charging current
19. oad has been switched on The different properties of the different modules make it impossible to exactly specify the darkness threshold A switch on delay cannot be configured 10 739 704 11 10 7 5 Daylight function This function allows a switch on point for the load output to be defined that occurs during the night darkness when daylight is detected The aim is to switch on a load a specified number of hours before dawn The load output remains switched off outside this period The controller recognises Day sun symbol when the module voltage is greater than the battery voltage and the battery can be charged Recogni tion duration approx 30 s This duration extends to 15 minutes when Night was previously detected due to a solar module not being connected or a module with a reverse current diode was detected and the module was then correctly reconnected and battery charging took place The controller must first have recognised at least one night day cycle before the daylight function can be activated This means that the daylight function cannot be activated in the first night following the installation day The function can only become active in the following night The switching point is thus not based on a specific time of day but rather relative to the point when the controller detects the transition from night to day This point can be influenced by bad weather fog or the natural seasonal changes in the lengths of d
20. or the specified intended purpose Also make sure that the permissible model specific rated currents and voltages are not exceeded No liability is accepted when the device is used in a manner other than for the intended purpose Handle the product with care 4 Controller protection functions The controller is equipped with various systems for protecting its electron ics the battery and connected load Triggering of the protection devices is indicated by an error message Section Error messages The protection devices automatically reset when the error has been corrected Caution Danger of damage to the controller Despite the protective functions the controller can still be damaged when more than one component is incorrectly connected The protective functions of the controller cover the following points Protection against reverse connected solar modules The rated power of the solar modules must not exceed the rated power of the controller Protection against reverse connected load devices on the load output Protects the controller but not the load device Protection against reverse connected battery Charging and discharging of the battery are prevented Short circuit fuse at module input Short circuit fuse at load output Protection against excessive charging current The controller disconnects the battery and switches off the load No load protection when operated without battery or load Load output is protected f
21. rformed within 5 minutes of a Power On Reset controller start up through con nection of power to the battery connection After this period activating the function causes InF to be displayed left Fig ink Perform the self test as follows Disconnect the solar module Disconnect load Disconnect the battery Reconnect the battery after waiting for 30 seconds Select the Self test menu item within 5 minutes upper Fig Press the right button the display flashes Press the left button the self test starts Only when InF is displayed Disconnect the battery wait 30 seconds reconnect the battery pro ceed from step 5 9 The error code is displayed for a number of seconds see table below If an error code other than 000 is displayed Note the code and contact a Steca dealer with this information for error analysis 10 All segments are displayed and then hidden then the self test window is displayed again upper Fig CO SES OT pe u NOS ee 11 In the flashing self test window press the left button to repeat the self test or press the right button to end the self test 739 704 11 10 13 Code Description 000 After displaying the code 000 all LCD segments are displayed and then hidden The controller is OK 100 Defective solar module input Possible causes Solar module was not disconnected before the test Check this and repeat the test if nec
22. rom the module voltage Reverse current protection Prevents reverse current from flowing into the solar modules at night An additional reverse current diode is not required 4 739 704 11 10 Overvoltage and undervoltage protection Immediately switches off the load output in the case of excessively high or low battery voltage Overtemperature protection If the temperature inside the controller becomes too high then the controller load output is switched off to reduce the power loss Load output overload protection If the permissible load current is exceeded then the load output is switched off Overvoltage protection A varistor at the module input provides protection against overvoltages gt 47 V The component limits the surge energy to 4 4 joules Deep discharge protection Overcharging protection Prevents exces sive discharging charging of the battery Conforms to the relevant European CE standards 5 Installation 5 1 Mounting location Mount the device near to the battery in the orientation shown below on a surface with the following properties stable e vertical non flammable e level dry The battery cable should be as short as possible 1 2 m and have a suffi ciently large cross section to keep losses as low as possible e g 2 5 mm at 10 A and 2 m 4 mm at 20 A and 2 m 6 mm at 30 A and 2 m For correct functioning of the temperature compensation of the charging voltage the sam
23. trolling takes place the charge current is controlled via pulse width modulated PWM shunting of the module input shunt charge controller Different charging methods are used normal charging boost charging and compensation charging depending on the behaviour of the battery The battery type and operating mode settings are taken into account The final charge voltage is temperature compensated A test is automatically performed every 30 days to see if maintenance charging is required 7 3 Deep discharge protection The controller protects the connected battery from excessive discharging When the battery drops below a particular charge state with SOC control or battery voltage with voltage control the load output is switched off to prevent further discharge of the battery Advance warning and disconnec tion due to deep discharge are indicated on the display The deep discharge thresholds are predefined and cannot be adjusted 7 4 Night light function The night light function allows the load output only to be switched on in darkness at night The load output remains switched off when light is present day The light information is provided via the connected solar module as follows e The load is switched on as soon as the information from the solar mod ule indicates darkness The load is switched off after a configurable time When light is detected the controller switches off the load output regardless of how long the l
24. uitable for controlling solar modules Never con nect any other type of charging source to the charge controller This can de stroy the controller and or the charging source If other charging sources are to be used together with the device first consult your dealer or installer and observe the information in the SOC calculation section of these instructions The controller is basically only suitable for use with the following types of 12 V or 24 V rechargeable batteries Lead acid batteries with liquid electrolyte Sealed lead acid batteries AGM GEL The respective battery type must be set in the controller see Setting the battery type to Gel Liquid Observe the instructions of the battery manu facturer before connecting the battery Important The controller is not suitable for use with nickel cadmium nickel metal hydride lithium ion or any other types of rechargeable or non rechargeable batteries These types of battery must not be connected to the controller Be sure to observe the safety instructions for the respective battery used The corresponding manufacturer s installation manual must be observed when installing the remaining components e g solar modules batteries and load The controller is only suitable for indoor use It must be I installed in a manner providing protection from weathering influences such as rain and direct sunlight Ventilation openings must not be covered The controller may only be used f
25. ult in danger for the user and the system This will also invalidate all warranty claims When the device detects faults or impermissible operating states this is indicated by a flashing error code on the display Errors are basically either temporary faults e g temporary overloading of the device or serious system errors that require external intervention Since multiple errors cannot be displayed at the same time the error with the highest error number priority is always displayed first If multiple errors exist then the next error code is not displayed until the higher priority error has been fixed The error codes have the following meanings Display Meaning Cause Remedy Communication error Disconnect the load solar a e with the internal stor modules and battery Re install age EEPROM the device If the error recurs com Luc then please contact your specialist dealer Communication error Check the plug connection Pi e on the external Steca at the 6 pin edge connector Ena bus 6 pin edge con check the power supply and Eus nector check for correct functioning of external expansions If the error recurs then please contact your specialist dealer Short circuit in Check the contacts of the A e external temperature 2 pin edge connector and sensor remove the short circuit ene i Check sensor
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