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User Manual-English,”'~Page 1

1. of i Serial interface BIDIRECTIONAL Se x NO EXCESS ENERGY Be C Load will reconnect a ee 1 l t Pa San ta The SRCXM remote display is designed to display panel current load current Battery is low as soon as battery if a Sep H EERS G G and battery voltage of your PV system and status values like charging ee is recharged Load on off v ae eaa E C ete ce overload low voltage disconnect as symbols Additional it can display several Switch off all loads 2 amp Wid lial l Low volage Slee na 3 D values of SRCX 1 s datalogger of the past 7 days such as Ah SOC Battery l Remove short S E E voltage morning evening This provides you more detailed information of pian pine A circuit Controller agga t ee Mawitoteas Mester aray Le your PV system load wiil switch on load Short push i e i 3 en f i l See SRCXM manual for details oaas automatically after lt Second pe l LYD current compensated B In Programming Menu 8 Serial interface BIDIRECTIONAL NO EXCESS EN max 1 minute eae a MARRS dT gt ERGY is also default setting the behaviour could modified Check proper S m ios ka E O lt 4 fee OU Baw nelinge sicommecn nS oL ed External Temperature Sensor SRCXT Controller is ventilation of a ae i i k thermally contr
2. REMARK place positive and negative wire close to each other to minimize electromagnetic effects REMARK Solar panels provide voltage as soon as exposed to sun light Mind he solar panel manufacturer s recommendations in any case To avoid voltage at the load terminal push the button to shut off the load output Connect the wires leading to the loads with correct polarity Mind the recommended wire size SR170CX 1 min 2 5 mm SR340CX 1 min 4 mm Fasten the strain relieves Close the terminal lid Now you have successfully connected your SRCX 1 controller Grounding the Solar System Be aware that the SRCX 1 is negative grounding and the negative terminals of the SRCX 1 controller are connected internally and therefore have the same electrical potential If any grouneing is required always do this on the nese wires Self Test As soon as the controller is supplied with power either oH the battery or the solar array it starts a self test routine This is indicated first by running LCD bars for approx 0 5 seconds and then the firmware version is displayed in coded symbols for about another second this is for service purposes only Then the display changes to normal operation System Voltage The controller adjusts itself automatically to 12 V or 24 V system voltage As soon as the voltage at the time of start up exceeds 20 0 V the controller implies a 24 V system If the battery vol
3. gt night Switching point night gt d 1 Ti 4 9 1 9 8V GI j factory 3 A setting Se P NTEN i Curve of open circuit voltage solar array The two voltage levels before after the slash are valid for 12 V and 24 V systems respectively To find the right value we recommend measuring the solar array open circuit voltage at the time when twilight has reached the level when the controller should switch on off This value the closest available can then be set according to the description in the programming section Programming Lock out By pushing the programming button for 8 s in normal operation mode the programming lock out is activated to prevent any accidental settings change interface and Datalogger SR_CXI and SR_CXCOM The controller comes with a serial interface which can be connected to a PC with an optional interface adapter SR_CXI see interface adapter manual for details In Prograrnming Menu 8 Serial interface BIDIRECTIONAL NO Programmable Solar Charge Controller with Nightlight Function SR170CX 1 SR340CX 1 User Manual English Page 2 ad EXCESS ENERGY is also default setting the behaviour of the serial interface paate factory Your can be modified i ge Tsp i 3 iti i R d p q Battery type aa l i eae Display Poe Pi Rex hee OO
4. tion EE a polarity i Max solar panel current SR170CX 1 10A 44 BBV Solar voltage bal Se Battery connected SR340CX 1 20A i S with wrong Unrestricted Unrestricted Acoustic Unrestricted 25 C without load current at 50 C 497 SAV Sobrspannung xe polarity Warning gt Max load current SR170CX 1 10A l l i i Day Night threshold rl 7 Load output is SR340CX 1 20A j 551 110V Solar voltage Ld L _ lYes not at 24V Yes if only the protected but 25 C without solar current at 50 C ae Sap ted Reverse polarity System voltage battery is connected oads might be Dimensions 92 x 93 x 38 mm w x h x d 607 IZV Solar volage d C Acoustic Warning damaged Weight 175gr l aS Unrestricted Max wire size 16 mm AWG 6 Ga AV Solar volage pet a CAUTION Batte SEN consumpuon emi ore a Short circuit Unrestricted hust be protectedi by Unrestricted Ambient temperature 25 to 50 C i 72 SV Solar votage eI fuse i range s et 1 i Day Night threshold r o i Controller limits Controller switches Case protection Ui 22 ZZ LAAN Soir volage biota vercurrent current off load terminal Subject to change without notice Version SRCX 1_20070728 ae an ee Controller is Made in one of the following countries China Germany Buzzer ON S L Thermal overload electronically ET aati SOLARA Hamburg ee a es protected Ort eae Perera www solara de RoHS ask ee Unrestri
5. Programmable Solar Charge Controller with Negative Ground SR170CX 1 SR340CX 1 User Manual English Page 1 Dear Customer Thank you very much for buying this Solara product With your new SRCX 1 controller you own a state of the art device which was developed according to the latest available technical standards It comes with a number of outstanding features such as a Multifunctional LC display a Programmable Low Voltage Disconnicce with new ALVD Adaptive Low Voltage Disconnect i Sophisticated programmable nightlight function Complete electronic protection i Negative Grounding i This manual gives important recommendations for installing using and programming as well as remedies in case of problems with the controller Read it carefully in your own interest and mind the safety and usage recom mendations at the end of this manual The charge controller protects the battery from being overcharged by the solar array and from being deep discharged by the loads The charging characteristics include several stages vouch includes automatic adoption to the ambient temperature The charge controller adjusts itself automatically to 12V or 24V system voltage a The pushbutton allows switching the load on and off manually The charge controller can be programmed for lighting applications a The controller provides a control output for special loads that make use of The controller is intended for indoor
6. RROR DESCRIPTION for details Acoustics Signals Another 8 sec pes releases the lock out The controller has an acoustic signal which indicates the change of the state of charge This function can be deactivated in Programming Menu 7l i Low Voltage Disconnect Function LVD The controller has 5 different modes to protect the battery from being deep discharged Mode1 Disconnect at 11 4 V at nominal load current up to 1 1 9 V at no load current Normal operation mode for good battery protection Disconnect at 11 0 V at nominal load current up to 11 75 V at no load current Mode with lower disconnection point Battery is cycled deeper this can shorten battery lifetime Disconnect at 11 0 V to 12 2 V depending on load current and previous charging cycles This adaptive mode leads to longer life time of the battery because it allows recovery of the battery by full recharge Maximum battery life Disconnect at 11 5 V fixed setting Appropriate if bypass loads draw current directly from battery Disconnect at 11 0 V fixed setting Appropriate if bypass loads draw current directly from battery Mode with lower disconnec tion point Battery is cycled deeper this can shorten partery life time The controller is preset to Mode 1 from the factory Use Programming Menu 2j to change the setting see back page In case of doubts which mode to choose consult your dealer because this has to be evaluated depending on the bat
7. Siete ter gc a ag a the last item only l P E ooa turer shall not be liable if there has been service or repair carried out by any 6 Pl gt SP eon i Day Night threshold o g a We therefore recommend that you first note down your required settings unauthorised person unusual use wrong installation or bad system design ae a om be rare as a 7 in the check boxes beside the menu structure and then do the program Opening case voids warranty i Los Day Night threshold on ming in one go This makes programming easier and avoids errors ae wr l aa LELY Solr votage A TN a All programming settings are stored in a non volatile memory and remain obi n ee ee Day Night threshold m stored even if the controller was disconnected from the battery voltage 2 24 V automatic recognition PI IES Lt Absorption voltage 14 4 7 28 8 V 25 C 0 5 2h rit eee ne r 7 TA ay Night threshold f f 5 atures _ Equalization voltage 14 8 729 6 V 25 C 2h PY Servete L L The controller is protected against wrong installation or use i Float voltage 13 7 27 4 V 25 C ETE EA a resno i ae At the solar At the battery At the load Load disconnect voltage 11 0 12 2 22 0 24 4 V depending on setting 321 68V Solr volage Cal terminal terminal terminal Load reconnect voltage 12 8 25 6 V anes a iad Battery connected l Temperature compensa 4 mV cell K l 38 76V Solar voltage J 0 with correct Unrestricted Normal operation Unrestricted
8. cted Unrestricted Unrestricted CID 181300111 ef E Seral inerface EXCESS ENERGY 7 A ji amp CURRENT DATA L ea Unrestricted nero 7 ms 3 Varistor 56 V Controller switches asee e Serial interface EXCESS ENERGY Cj Overvoltage Max 40 V off load terminal i Fa Se amp DATALOGGER Lo Un dervoltage Normal Controller switches Controller switches operation off load terminal off load terminal WARNING The combination of different errors may cause damage to the controller Always remove errors before continue connecting the controller Ore 4a ii i i Date of your EELNES id as i ape pa 4 4 Keep individual settings AR an Wi Weld Dir 07 gt own settings v Reset t factory preset
9. distance to floor and ceiling this is necessary for ventilation reasons A DIN Rail mounting plate is available as an accessory Solar SRCX DR This allows mounting the controller on a standard 35mm DIN rail Use the screws supplied with the mounting plate to fix it to the controller i gt 10c gt 4 Connect the wires leading to the battery with correct polarity To avoid any voltage on the wires first connect the controller then the battery Mind the recommended wire length min 30 cm to max approx 100 cm and the wire size SR170CX 1 min 2 5 mm SR340CX 1 min 4 mm Wrong polarity will cause a permanent warning sound WARNING If the battery is connected with reverse polarity the load terminals will also have the wrong polarity Never connect loads during this condition REMARK The controller has a built in voltage drop compensation which automatically compensates battery wire voltage drops of up to 250 mV REMARK Mind the recommendations of your battery manufacturer We strongly recommend connecting a fuse directly to the battery to protect any short circuit at the battery wiring The fuse must take the charge controller nominal current SR170CX 1 15A SR340CX 1 30A Connect the wires leading to the solar array with correct polarity To avoid any voltage on the wires first connect the controller then the solar array Mind the recommended wire size SR170CX 1 min 2 5 mm SR340CX 1 min 4 mm
10. ease see section DESCRIPTION OF FUNCTIONS for after short time ve capacity s y i neS details amp Nightlight function 4 reel Battery is not No up MENING SERS feat sy The default low voltage disconnect LVD setting is Mode 1 Disconnect at Bind E Aaa Solar array faulty Check Solar array i E DER 11 4 V at nominal load current up to 11 9 V at no load current during daytime bars or wrong polarity and wiring a Nighelghe funcrion i ae Nenu 3 Nightlight function type Battery wrong Permanent sane B ith Remove reverse loo ae Nights function iine yo In this menu you can set the type of nightlight function or switch off the polarity sound connected wi polarity es mre beore maota LJ L nightlight function of your SRCX 1 controller a poadty erat ey iNet pt ees i ishtlight functi is OFF ontroller 1S ount controuer a mf ae TO IHRS before mid of night L The geru sering of nightlig t uneton type is OFF thermally a location with A e m ight it rue ue dead cla Aaa atl Controller limits a Overloaded 1 better ventilation bok 8 Thad apg SoS O When the nightlight function type is set to EVENING MORNING mode you can s lar c rrent E Solar array Got lt l ESE o T set the load ON hours after sunset in this menu exceeds nominal Check solar array x 4 Nightlghs function EVENING 7 E The default load ON hours after sunset is 0 hr l i current of current ke os Menu 5 Night
11. light function morning settings controller ea Reta NINE 0 G When the nightlight function type is set to EVENING MORNING mode you can r ee i saa o L Ngn fugon 7 77 58 oT aes ora set the load ON hours before sunrise in this menu Intended Use LEF K My MORNING OFF a E The default load ON hours before sunrise is 0 hr The charge controller is intended for use in photovoltaic systems with 12 V or aE pone EERE mom Menu 6 Day Night threshold 24 V nominal voltage It shall be used with vented or sealed VRLA lead acid ae MORNING HR eid LJ A is batteries only i CIA Nehi ii as In this menu you can set the open circuit voltage of PV panel that the bressan ye Nightlight function SEI G SRCX 1 controller should know it s day or night pie baen tace a eee ers ies is eect The default day night threshold is 4 9V for 12V PV system 9 8V for 24V PV Batteries store a large amount of energy Never short circuit a battery munaa pe Nightlght function ras i system yeng y under all circumstances We recommend connecting a fuse slow acting ER MORNING HRS ele oe l type according to the nominal controller current directly to the battery l my Nightighe function pnr Menu 7 Buzzer on off terminal 28 foo BZ MORNING 4HRS ee UE f 3 L amp I You can turn ON turn OFF the buzzer in this menu Batteries can produce flammable gases Avoid making sparks using fire or Nightight fu
12. nction gq g Menu 8 Settings of datalogger any naked flame Make sure that the battery room is ventilated MORNING S HRS i a Avoid touching or short circuiting wires or terminals Be aware that the Aen tonsa AORNINE a i PA ae OF SRE Mi the tunetions df SREK tnteniace should Be properly voltages on specific terminals or wires can be up to double the battery FROM 2 HRS after mid of night Bl set in this menu a voltage Use isolated tools stand on dry ground and keep your hands dry Niandghi fined a MORNING P Menu 9 Individual factory settings Keep children away from batteries and the charge regulator FROM 3HRS after mid of night H t You can save your current menu setting or reset to default factory setting in Please observe the safety recommendations of the battery manufacturer Nighi reer venie ae this menu If in doubt consult your dealer or installer Al FROM 4 HRS after mid of night 4 L Programming logout O ETTER STEET y ee a ee When you exit programming menu the controller displays the state of charge he manufacturer shall not be liable for damages especially on the battery z available energy of the battery and the status of the load caused by use other than as intended or as mentioned in this manual or if the Ween he ebaehedneten MORNING F E a Mind that once you have entered the programming menu you can exit it at recommendations of the battery manufacturer are neglected The manufac i
13. oller al 2 a Low voltage disconnect i1 0V i E With the optional temperature sensor SRCXT SRCX 1 can measure the Loads arenot amp overloaded and After cooling down li 235 Lo battery temperature and adjust the charging voltage accordingly to extend supplied has disconnected the loads are G A ire E E a Orne ore the battery life span TU the loads reconnected 1 es ie Ie 7 Sia CO EM See SRCXT manual for details automatically j a i Nean ineo EE i Check if other f R DUSK TO DAWN Ep La Battery voltage sources overcharge a Sei ie ae ee _ You enter the programming mode with a long push 2s 8s on the button too high the battery If not Fe J Nighdighefunetion TEE The programming menu structure is described as below i 15 5 7 31 0 V controller is y cn SS Menu 1 Battery type damaged Od Ecce x o f boils i a ae In this menu you can select the proper battery type liquid electrolyte or Battery wires or f j E E GEL YRLA according to your PV system to get better charge of your battery greats ka Check aey i ee ax BENING TER ey ic Hay p amaged wires fuses an g 7 7 The default battery type is liquid electrolyte eA battery has high batteiy oOo F e spe unin aes Menu 2 Low voltage disconnect resistance f Mc In this menu you can set 5 different LVD modes to protect the battery from Battery is flat PR Battery has low Chona batte r Nihiighe function gq o being deep discharged Pl
14. tage i is not within the normal operation range approx 12 to 15 5 V or approx 24 to 31 V at start up a status display according to the section ERROR DESCRIPTION occurs Battery Type The controller is preset to operate with lead acid batteries with liquid electrolyte If you intend to use a VREA battery GEL type you can adjust the controller in 1 see back page The equalization charge is deactivated then In case of any doubts consult your dealer Le Displays In normal operation mode the controller displays the state of charge avail able energy of the battery Any change of the state of charge SOC to a lower status is additionally signalled acoustically System conditions are displayed as follows gt 80 ae 35 60 10 35 lt 10 Load Disconnect Poo i onnan oa lan Perris O P ggg ye O igh ee j ge qt H Flashes O X 3x The percentage aN to the available energy unt Low Voltage Disconnect in relation to a fully charged battery As long as the solar array supplies enough voltage to charge the battery this is indicated by up moving bars alternately to the state of charge display In normal operation the loads can be switched on and off by pushing the button This is indicated in the display Load Load Ls manually ON manually O FF Special conditions are shown in the LC display if the Low Voltage Disconnect function shuts off the load output or in case of various other error fella See section E
15. tery used Nightlight Function The SRCX 1 controller comes with a sophisticated nightlight function It controls the load output at night and is widely programmable There are 2 modes available Mode 2 Mode 3 Mode 4 Mode 5 DUSK TO DAWN and EVENING MORNING The mode can be selected in Programming Menu 3 m Sr time e after ofhours mid of night am gt mamma If EVENING MORNING is selected allows choosing the MORNING timing behaviour and 4 allows choosing the EVENING timing behaviour l Mind that the load output is switched off as soon as the battery has reached the Low Voltage Disconnect threshold The Low Voltage Disconnect has priority above the nightlight function Mid of night is detected automatically as the middle between dusk and dawn no real time setting is required It may take some days until the controller has learnt midnight This method can cause some inaccuracy but avoids any clock readjustment The controller s Mid of night can be different from the real time midnight depending on your location The controller recognizes day and night based on the solar array open circuit voltage In Programming Menu 6j this day night threshold can be modified according to the requirements of the local conditions and the solar array mid of night of hours used i oe DK Th E Threshold setting range a a 771 154V a f fh rz Switching point day
16. use only Protect it from direct sunlight excess energy Additionally it has a serial interface which can be used with an optional interface adapter SR CXI The charge controller has a number of safety and display functions m up g norma p ventilation e g in an installation cabinet the controller limits the solar charge current to prevent overheating The controller does not need any maintenance or service Remove dust with a dry tissue l It is important that the battery gets fully charged frequently at least monthly Otherwise the battery will be permanently damaged A battery can only be fully charged if not teo much energy is drawn during charging Keep that in mind especially if you install additional loads and place it in a dry environment Never install it in humid rooms like bathrooms The controller measures the ambient temperature to adopt the charging voltage therefore it must be installed in the same room as the battery The controller warms up during operation It shall be installed on a non flammable surface only Open the terminal lid Remove the screws from the strain relief and take off the strain relief bridges Mount the controller to the wall with screws that fit to the wall material Use screws with 4 to 5 mm shaft and max 9 mm head diameter no counter sunk Mind that the screws have to carry also the force applied by the wiring Mind also the minimum required

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