InvertFlex User Manual ver 2.0
Contents
1. A 3 mima Return to default display screen default NO Stay at latest screen 0O co IJI FEF A AAA Backlight on default nie E D aN n on default ee ann Lit LON Alarm off If selected no matter how users switch display screen it will automatically return to default display screen Input voltage output voltage after no button is pressed for 1 minute If selected the display screen will stay at latest screen user finally switches Backlight off for more information please visit www flexston com oF Overload bypass Bypass disable ypass enable When enabled the unit will default transfer to line mode if gt oad Abant qn O O Y overload occurs in battery Ca DSoO a rit mode ee Record enable Record disable default JC Jo C cC Record Fault code E 3 L L g C gt L dl L 1KVA default setting 14 1V an JIC i Bulk charging voltage C V voltage 5KVA default setting 56 4V u IC CU cO 3 If self defined is selected in program 5 this program can be set up Setting range is from 12 0V to 14 6V for InvertFlex 1K model 24 0V to 29 2V for InvertFlex 2K 3K model and 48 0V to 58 4V for InvertFlex 5K model Increment of each click is 0 1V 1KVA default setting 13 5V 2K 3KVA default setting 27 0V __BATT JA E Floating charging voltage If self defined is selected in program 5 this program can be set up Setting range is from 12 0V t2. FLEXSTON SIMPLICITY IS THE ULTIMATE SOPHISTICATION InvertFlex 1K 2K 3K 5K Table of Contents ABOUT THIS MANUAL crisissen aaa aaia aaia 1 o A AS 1 Ag ecient ut casi ene ee enema E cee tee 1 SAFETY INSTRUCTIONS iaa 1 INTRODUCTION ui ao 2 CIOS ias a sola ciaci n 2 BASE SV SECM eI Ce UU ota 2 PROGUCE OVEIVICW ti 3 INSTALLATION Ga 4 URDaCKNG and IMSPecuO Msi a nee meas 4 Preparation A ida 4 Ms Me Cae Ig cetera cetera ES EDR Oe ee Ree ee on ener 4 Banen CONNECCION racista lic 5 ACIDPUVOUPHUC CONNEC HON asi 7 PV COMMCCHOMN ai A E E etnies 9 AAA o A a a E 10 COMMUNICATION COMMS CTO svisan E a A E A EA E 11 Dry CONCE INA arna an oa 11 OPERATION idas 12 POWer ON OFF za A A avda 12 Operation and DISPlay PO as 12 LED DIST ICONS AAA acest ee o O E neste aeemaia eens 13 OD SONG an Leet eet Me cout i ida 15 DI Play SCD is Ese nae eee 23 Operating Mode Desc is 25 Fault Referente Code iii eas ead O O 27 WANNA Indicator nad ia 27 SPECIFICATIONS cosita oia 28 Table 1 Line Mode Specifications coccocoococcoroononcorecnoncanonnonroncoronrnnraronrnnrnnenrnnrnnraronrnnrnnrnrnnranenronrnarnonos 28 Table Z Inverter Mode Species Susa a 29 Table 3 Charge Mode Specifications nerea a A ves ese AEI 30 Table General Spector antes ana een ean 30 TROUBLE SHOOTING sigs dvisdansiriaiavedsincntsiarisaseneretusnccuctansdsaucavedsaierseicsusaersducuauesdsdaveduacnanessanerustaniaaaes 31 Appendix Approximate Back up Time Table cscsc
3. Bottom bar will be on and the other three Constant ns 2 2 083V cel bars will flash in turns Current mode tomo bars E E e olher Constant 2 083 2 16 V cell two bars will flash in turns Voltage mode Bottom three bars will be on and the top gt 2 167 V cell bar will flash Floating mode Batteries are fully charged 4 bars will be on 13 for more information please visit www flexston com In battery mode it will present A capacity Load Percentage cm Battery Voltage LCD Display lt 1 KAIJ 1 717V cell 1 8V cell Load gt 50 1 8 1 883V cell gt 1 883 V cell lt 1 ma 1 817V cell 1 9V cell 50 gt Load gt 20 1 9 1 983V cell gt 1 983 lt 1 867V cell 1 867V cell 1 95V cell Load lt 20 1 95 2 033V cell gt 2 033 Load Information CNN Indicates overload Indicates the load level by 0 24 25 50 50 74 and 75 100 0 25 25 50 50 7 5 75 100 Mode Operation OOA Indicates unit connects to the mains Indicates unit connects to the PV panel Indicates load is supplied by utility power a Indicates the utility charger circuit is working ES Indicates the DC AC inverter circuit is working Mute Operation A Indicates unit alarm is disabled for more information please visit www flexston com LCD Setting After pressing and holding ENTER button for 3 seconds the unit will enter setting mode Press UP or DOWN button to select setti
4. Internal components failed failed Return to Return to repair center center Faultcode51 9 Restart the unit if the error a code 52 Bus voltage is too low happens again please return Output voltage is unbalanced repair center Faultcode55 0 code 55 Output Output voltage is unbalanced is unbalanced P If the battery is connected Battery is not connected well or Fault code 56 well please return to repair fuse is burnt center 31 for more information please visit www flexston com Appendix Approximate Back up Time sane a a 200 E w o e a A e a E 600 5 er 70 81 176 80 62 0 85 8 00 ION III EEN IO 2 40056 TEO Co a A DA 0 Y ee Cw IN O e ae e e a0 IN A EN TA 0 0 Co w o o Co a y TAO 900 a as0 ti DUO EN TA IMEI DON IE IA AS DA Cao A a AA 0 fT 5 Cowo IO e EN TAO 3500 sia C o y a 0 Sit Cso a AC Note Backup time depends on the quality of the battery age of battery and type of battery Specifications of batteries may vary depending on different manufacturers O ojo Oo O O Ov NO for more information please visit www flexston com
5. Take 1KVA inverter as an example to select proper PV modules After considering Voc of PV module not exceeds 40Vdc and max Vmpp of PV module close to 15Vdc or within 13Vdc 18Vdc we can choose PV module with below specification Maximum Power Pmax Max PV module numbers in series Max Power Voltage Vmpp V 17 6V 1 gt 17 6x1 15 18 Max Power Current Impp A 4 83A PV module numbers in parallel Open Circuit Voltage Voc V 21 6V 10 gt 50 A 4 83 Short Circuit Current Isc A 5 03A Total PV module numbers 1x10 10 Maximum PV module numbers in Series 1 PV module numbers in Parallel 10 Total PV module numbers 1 x 10 10 Take InvertFlex 2K InvertFlex 3K inverter as an example to select proper PV module After considering Voc of PV module not exceed 60Vdc and max Vmpp of PV module close to 30Vdc or within 30Vdc 32Vdc we can choose PV module with below specification for more information please visit www flexston com Maximum Power Pmax 260W Max PV module numbers in series Max Power Voltage Vmpp V 30 9V 1 gt 30 9x1 30 32 Max Power Current Impp A 8 42A PV module numbers in parallel Open Circuit Voltage Voc V 37 7V 6 gt 50 A 8 42 Short Circuit Current Isc A 8 89A Total PV module numbers 1x6 6 Maximum PV module numbers in Series 1 PV module numbers in Parallel 6 Total PV module numbers 1 x 6 6 Take InvertFlex 5K model inverter as an example to select proper PV module After considering
6. Voc of PV module not exceed 105Vdc and max Vmpp of PV module close to 60Vdc or within 56Vdc 72Vdc we can choose PV module with below specification Max PV module numbers in series 2 gt 30 9 x2 56 72 PV module numbers in parallel 6 gt 50 A 8 42 Short Circuit Current Isc A 8 89A Total PV module numbers 2x6 12 Maximum PV module numbers in Series 2 PV module numbers in Parallel 6 Total PV module numbers 2x6 12 Please follow below steps to implement PV module connection 1 Remove insulation sleeve 10 mm for positive and negative conductors i 2 Check correct polarity of connection cable from PV modules and PV input connectors Then connect positive pole of connection cable to positive pole of PV input connector Connect negative pole of connection cable to negative pole of PV input connector 3 Make sure the wires are securely connected Final Assembly After connecting all wirings please put bottom cover back by screwing two screws as shown below IIIN InvertFlex 1K 2K 3K InvertFlex 5K 10 for more information please visit www flexston com Communication Connection Please use supplied communication cable to connect to inverter and PC Insert bundled CD into a computer and follow on screen instruction to install the monitoring software For the detailed software operation please check user manual of software inside of CD Dry Contact Signal There is one
7. dry contact 3A 250VAC available on the rear panel It could be used to deliver signal to external device when battery voltage reaches warning level Unit Status Condition Dry contact port NC amp C Power Off Unit is off and no output is powered Program 01 is Battery voltage lt Setting Gach set as SBU or value in Program 12 d Solar first Battery voltage gt Setting value in Program 13 or l Close battery charging reaches floating stage Output is powered from Utility Output is Program 01 Battery voltage lt Low DC Open powered set as Utility warning voltage d from Battery Battery voltage gt Setting or Solar value in Program 13 or l Close battery charging reaches Power On floating stage for more information please visit www flexston com OPERATION Power ON OFF Once the unit has been properly installed and the batteries are connected well simply press On Off switch located on the button of the case to turn on the unit Operation and Display Panel The operation and display panel shown in below chart is on the front panel of the inverter It includes three indicators four function keys and a LCD display indicating the operating status and input output power information OUTPUTBATTLOAD alone BRA BODE e E LCD display a or LED indicators Function keys LED Indicator reen Solid On Output is powered by utility in Line mode Green Flashing Output is powered by battery or PV
8. in battery mode er Solid On Battery is fully charged Flashing Battery is charging Rea Solid On Fault occurs in the inverter Flashing Warning condition occurs in the inverter Function Keys Function Key Description ESC To exit setting mode To go to previous selection DOWN To go to next selection ENTER To confirm the selection in setting mode or enter setting mode for more information please visit www flexston com LCD Display Icons INPUTBATTTEMP Co amm Y OUTPUTBATTLOAD Y EHRADOOY EA a I LL 7 fe e A Ve H a fT OVER LOAD MA 25 Function description Input Source Information Indicates the AC input Indicates the PV input INPUTBATT E MO Indicate input voltage input frequency PV voltage battery voltage and II jo charger current Configuration Program and Fault Information Indicates the setting programs Indicates the warning and fault codes PA ABs Warning flashing with warning code ERROR lighting with fault code Output Information OUTPUTBATTLOAD CM Indicate output voltage output frequency load percent load in VA load in Ct Vt e Watt and discharging current Battery Information Indicates battery level by 0 24 25 49 50 74 and 75 100 in battery CHARGING mode and charging status in line mode In AC mode it will present battery charging status Battery voltage LCD Display lt 2V cell 4 bars will flash in turns
9. 1K model 20A default JN Lit Available options in InvertFlex 2K 3K model for more information please visit www flexston com Setting voltage point back to battery mode when selecting SBU priority or Solar first in program 01 46V default BATT C IO 18 for more information please visit www flexston com Setting voltage point back to battery mode when selecting SBU priority or Solar first in program 01 27V default BATT Pout dy JU _ BATT JM v JO Iv 19 for more information please visit www flexston com Charger source priority To configure charger source priority Alarm control Auto return to default display screen Backlight control Beeps while primary source is interrupted Solar and Utility default EZ Only Solar t NIE Vt 5 DL Solar energy will charge battery as first priority Utility will charge battery only when solar energy is not available Utility will charge battery as first priority Solar energy will charge battery only when utility power is not available Solar energy and utility will charge battery at the same time Solar energy will be the only charger source no matter utility is available or not If this inverter charger is working in Battery mode or Power Saving mode only solar energy can charge battery Solar energy will charge battery if it s available and sufficient Alarm on default
10. Output short circuited or over temperature is detected by internal converter components D5 Output voltage is abnormal For InvertFlex 1K 2K 3K Tal model a ii 8 83 3 C voltage is too high InvertFlex 5K model o7 Overload timeout time out e femme Bus voltage is too high 09 Bus Bus soft start failed start failed Main relay failed Output voltage is too low TRE NOTE Fault codes 51 52 53 55 56 57 and 58 are only available in 5K model Warning Indicator a Warning Event Audible Alarm Icon flashing Fan is locked when Beep three times every Tl 1 inverter is on second Battery is over charged Beep once every second a C Low battery Beep once every second u D OVERLOAD LOAD Output power derating Beep twice every 3 seconds ond for more information please visit www flexston com SPECIFICATIONS Table 1 Line Mode Specifications Input Voltage Waveform Sinusoidal utility or generator Nominal Input Voltage 230Vac 170Vac 7V UPS Low Loss Voltage 90Vac 7V Appliances 180Vac 7V UPS Low Loss Return Voltage 100Vac 7V Appliances High Loss Voltage 280Vac 7V High Loss Return Voltage 270Vac 7V Max AC Input Voltage 300Vac Nominal Input Frequency 50Hz 60Hz Auto detection Low Loss Frequency 40 1Hz Low Loss Return Frequency 42 1Hz High Loss Frequency 65 1Hz High Loss Return Frequency 63 1Hz Output Short Circuit Protection Circuit Breaker Efficiency Line Mode gt 95
11. Rated R load battery full charged 10ms typical UPS Transfer Time 20ms typical Appliances Output Power A S Rated Power Output power derating When AC input voltage drops to 170V the output power will be derated 90 Power gt 280V Input Voltage for more information please visit www flexston com Table 2 Inverter Mode Specifications Output Voltage Waveform Pure Sine Wave A Wave O O O O O 55 2150 load 10 0110 r 150 load 2 rated power for 5 seconds Nominal DC Input Voltage 12Vdc 24Vdc 48Vdc Cold Start Voltage 11 5Vdc 23 0Vdc 46 0Vdc Low DC Warning Voltage load lt 20 20 lt load lt 50 load gt 50 Low DC Warning Return Voltage load lt 20 20 lt load lt 50 load gt 50 Low DC Cut off Voltage load lt 20 20 lt load lt 50 load gt 50 11 0Vdc 10 7Vdc 10 1Vdc 11 5Vdc 11 2Vdc 10 6Vdc 10 5Vdc 10 2Vdc 9 6Vdc 22 0Vdc 21 4Vdc 20 2Vdc 23 0Vdc 22 4Vdc 21 2Vdc 21 0Vdc 20 4Vdc 19 2Vdc 44 0Vdc 42 8Vdc 40 4Vdc 46 0Vdc 44 8Vdc 42 4Vdc 42 0Vdc 40 8Vdc 38 4Vdc for more information please visit www flexston com Table 3 Charge Mode Specifications Charging Algorithm 3 Step Utility Charging Mode 2 10 20 30 40 50 AC Charging Current 10 20Amp 20 30Amp OV p 230Vac 60Amp OV p 230Vac 7 Flooded Battery 14 6 Bulk Charging AGM Gel Voltage 14 1 28 2 56 4 Battery Floating Charging Voltag
12. a separate AC breaker between inverter and AC input power source This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input The recommended spec of AC breaker is 10A for InvertFlex 1K 20A for InvertFlex 2K 32A for InvertFlex 3K 50A for InvertFlex 5K CAUTION There are two terminal blocks with IN and OUT markings Please do NOT mis connect input and output connectors WARNING All wiring must be performed by a qualified personnel WARNING It s very important for system safety and efficient operation to use appropriate cable for AC input connection To reduce risk of injury please use the proper recommended cable size as below Suggested cable requirement for AC wires InvertFlex 1K 16 AWG 0 5 0 6 Nm InvertFlex 2K 14 AWG 0 8 1 0 Nm InvertFlex 3K 12 AWG 1 2 1 6 Nm InvertFlex 5K 8 AWG 1 4 1 6Nm Please follow below steps to implement AC input output connection 1 Before making AC input output connection be sure to open DC protector or disconnector first 2 Remove insulation sleeve 10mm for six conductors And shorten phase L and neutral conductor N 3 mm 3 Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws Be sure to connect PE protective conductor D first Ground yellow green L LINE brown or black N Neutral blue InvertFlex 2K 3K 5K f WARNING Be sure that AC power
13. dhered to the wall vertically e Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires AN SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON COMBUSTIBLE SURFACE ONLY for more information please visit www flexston com Install the unit by screwing three screws Battery Connection CAUTION For safety operation and regulation compliance it s requested to install a separate DC over current protector or disconnect device between battery and inverter It may not be requested to have a disconnect device in some applications however it s still requested to have over current protection installed Please refer to typical amperage in below table as required fuse or breaker size Ring terminal WARNING All wiring must be performed by a qualified personnel l WARNING It s very important for system safety and efficient operation to use appropriate cable for battery connection To reduce risk of injury please use the proper recommended cable and terminal size as below m Recommended battery cable and terminal size 1 Typical Battery Torque Amperage capacity value Zea 1K 2K mowe fe fe se EEES feme fa Sea a fa a 1 4AWG 22 33 2 InvertFlex mawe u ea 52 Please follow below steps to implement battery connection 1 Assemble battery ring terminal based on recommended battery cable and terminal size 2 InvertFlex 1K m
14. e 13 5Vdc 27Vdc 54Vdc Battery Voltage per cell Charging Current 2 43Vdc 2 35Vdc 2 25Vdc Charging Curve mp y inimu S aximu Bulk Absorption Constant Current Constant Voltage Charging Current PWM System DC Voltage 12Vdc Max PV Array Open Circuit Voltage 40Vde sova 105v DC Voltage Accuracy 0 3 Joint Utility and Solar Charging Max Charging Current 50Amp 110Amp Default Charging Current 50Amp 50Amp Table 4 General Specifications Operating Temperature Range 0 C to 55 C Storage temperature 15 C 60 C Dimension D W H mm 95 x 240 x 3 100 x 272 x 355 120 x 295 x 468 16 30 for more information please visit www flexston com TROUBLE SHOOTING Unit shuts down LCD LEDs and buzzer automatically will be active for 3 The battery voltage is too low 1 Re charge battery during startup seconds and then lt 1 91V Cell 2 Replace battery complete off 1 The battery voltage is far too 1 Check if batteries and the No response after low lt 1 4V Cell wiring are connected well No indication power on 2 Battery polarity is connected 2 Re charge battery reversed 3 Replace battery Input voltage is displayed as 0 on the LCD and green LED is flashing Check if AC breaker is tripped Input protector is tripped and AC wiring is connected well 1 Check if AC wires are too thin and or too long Insufficient quality of AC power 2 Check if generator if S
15. elect appropriate cable size It s very important to correctly operate this inverter charger Be very cautious when working with metal tools on or around batteries A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion Please strictly follow installation procedure when you want to disconnect AC or DC terminals Please refer to INSTALLATION section of this manual for the details Fuses 4 pieces of 40A 32VDC for 1KVA 2KVA 6 pieces of 40A 32VDC for 3KVA 1 piece of 200A 64VDC for 5KVA are provided as over current protection for the battery supply GROUNDING INSTRUCTIONS This inverter charger should be connected to a permanent grounded wiring system Be sure to comply with local requirements and regulation to install this inverter NEVER cause AC output and DC input short circuited Do NOT connect to the mains when DC input short circuits Warning Only qualified service persons are able to service this device If errors still persist after following troubleshooting table please send this inverter charger back to local dealer or service center for maintenance for more information please visit www flexston com INTRODUCTION This is a multi function inverter charger combining functions of inverter solar charger and battery charger to offer uninterruptible power support with portable size Its comprehensive LCD display offers user configurable and easy accessible b
16. hore or Generator applied is working well or if input voltage range setting is correct UPS gt Appliance Green LED is flashing set Solar First as the priority of Change output source priority output source to Utility first When the unit is turned on internal LCD display and LEDs relay is switched on are flashing and off repeatedly Reduce the connected load by Overload error The inverter is ae Fault code 07 ay switching off some overload 110 and time is up equipment Check if wiring is connected Output short circuited well and remove abnormal Fault code 05 eae Mains exist but the unit works in battery mode Green LED is flashing Check if battery wires are Battery is disconnected connected well poets LP On of internal converter component is over 120 C Only ponen Rover tony Petes he a Ton o available for 1 3KVA models the ambient temperature is Internal temperature of inverter Fault code 02 a too high a 7 is over 100 C Battery is over Battery is over charged Return to repair center Fault code 03 Check if spec and quantity of Buzzer beeps The battery voltage is too high batteries are meet continuously and TOA rea LED ISON Faultcode 01 code 01 Fan Fan fault Replace the fan the fan Output abnormal Inverter voltage 1 Reduce the connected Fault code 06 58 below than 190Vac or is higher load than ai 2 Return to a center bo code 08 bo 153 57 Internal
17. lexston com AC input voltage range Power saving mode enable disable Battery type Auto restart when overload occurs Auto restart when over temperature occurs Output frequency 50A default Appliances default B Saving mode disable default ri ml DH SoS Saving mode enable Mu econ E o JIC AGM default User Defined Restart disable default ac Ub LEO A A EAS ET Restart disable default ri U tea 50Hz default NO m Y 50 16 If selected acceptable AC input voltage range will be within 90 280VAC If selected acceptable AC input voltage range will be within 170 280VAC If disabled no matter connected load is low or high the on off status of inverter output will not be effected If enabled the output of inverter will be off when connected load is pretty low or not detected Flooded If User Defined is selected battery charge voltage and low DC cut off voltage can be set up in program 26 27 and 29 Restart enable for more information please visit www flexston com Maximum utility charging current Note If setting value in program Q2 is smaller than that in program in 11 the inverter will apply charging current from program 02 for utility charger ITA Setting voltage point back II to utility source when A selecting SBU priority or Solar first in program 01 BATT aI dt ty 17 Available options in InvertFlex
18. ll wiring must be performed by a qualified personnel WARNING It s very important for system safety and efficient operation to use appropriate cable for PV module connection To reduce risk of injury please use the proper recommended cable size as below Typical Amperage Torque Value PV Module Selection When selecting proper PV modules please be sure to consider below requirements first 1 Open circuit Voltage Voc of PV modules not exceeds max PV array open circuit voltage of inverter INVERTER MODEL Solar Charger Charging Current PWM 50Amp System DC Voltage 12Vdc 24Vdc 48Vdc Operating Voltage Range 15 18Vdc 30 32Vdc 60 72vdc Max PV Array Open Circuit Voltage 40Vdc 60Vdc 105Vdc 2 Max Power Voltage Vmpp of PV modules should be close to best Vmp of inverter or within Vmp range to get best performance If one PV module can not meet this requirement it s necessary to have several PV modules in series connection Refer to below table InvertFlex 1K 15Vdc 15V 18V InvertFlex 2K 3K 30Vdc 30V 32V InvertFlex 5K 60Vdc 56V 72V Note Vmp panel max power point voltage The PV charging efficiency is maximized while PV system voltage is close to Best Vmp Maximum PV module numbers in Series Vmpp of PV module X pcs Best Vmp of Inverter or Vmp range PV module numbers in Parallel Max charging current of inverter Impp Total PV module numbers maximum PV module numbers in series PV module numbers in parallel
19. mation is switched as below order input voltage input frequency PV voltage charging current battery voltage output voltage output frequency load percentage load in Watt load in VA load in Watt DC discharging current main CPU Version and second CPU Version Selectable information LCD display Input Voltage 230V output voltage 230V OUTPUT 230 Input voltage Output voltage Default Display Screen Input frequency OUTPUT Flv PV voltage Charging current Battery voltage DC discharging current Output frequency for more information please visit www flexston com Load percent 70 BATT Load percentage When connected load is lower than InvertFlex 1k load in VA will present xxxVA like below chart INPUT _ _ LOAD iiv Load in VA When load is larger than 1kVA 1KVA load in VA will present x xkVA like below chart LOAD When load is lower than 1kW load in W will present xxxW like below chart INPUT Load in Watt When load is larger than 1kW 21KW load in W will present x xkW like below chart LOAD Main CPU version checking for more information please visit www flexston com Secondary CPU version 00003 03 Secondary CPU version checking Operating Mode Description Operation mode LCD display Charging by utility and PV energy Standby mode Power saving mode Note Standby mode The inverter is not turned on yet but at this No output is supplied by the time the inver
20. ng programs And then press ENTER button to confirm the selection or ESC button to exit Setting Programs Selectable option Exit setting mode Output source priority 01 To configure load power source priority Maximum charging current To configure total charging current for solar and utility chargers Max charging current utility charging current solar charging current Escape Solar first Utility first default SBU priority ryt Li 1 B 10A Only available for 1K model O JE O 15 Solar energy provides power to the loads as first priority If solar energy is not sufficient to power all connected loads battery energy will supply power the loads at the same time Utility provides power to the loads only when any one condition happens Solar energy is not available Battery voltage drops to low level warning voltage or the setting point in program 12 Utility will provide power to the loads as first priority Solar and battery energy will provide power to the loads only when utility power is not available Solar energy provides power to the loads as first priority If solar energy is not sufficient to power all connected loads battery energy will supply power to the loads at the same time Utility provides power to the loads only when battery voltage drops to either low level warning voltage or the setting point in program 12 for more information please visit www f
21. o 14 6V for InvertFlex 1K model 24 0V to 29 2V for InvertFlex 2K 3K model and 48 0V to 58 4V for InvertFlex 5K model Increment of each click is 0 1V for more information please visit www flexston com 1KVA default setting 10 5V Low DC cut off voltage If self defined is selected in program 5 this program can be set up Setting range is from 10 0V to 12 0V for InvertFlex 1K model 20 0V to 24 0V for InvertFlex 2K 3K model and 40 0V to 48 0V for InvertFlex 5K model Increment of each click is 0 1V Low DC cut off voltage will be fixed to setting value no matter what percentage of load is connected Solar power balance If selected solar input power will be automatically adjusted Sapien according to the following formula Max input solar power Max Solar power balance e battery charging power When enabled solar input Connected load power will be automatically Solar power balance If selected the solar input power adjusted according to delia will be the same to max battery connected load power EN l charging power no matter how Only available for much loads are connected The InvertFlex 5KVA model a A max battery charging power will be based on the setting current in program 02 Max solar power Max battery charging power for more information please visit www flexston com Display Setting The LCD display information will be switched in turns by pressing UP or DOWN key The selectable infor
22. odel supports 12VDC system InvertFlex 2K 3Kmodel supports 24VDC system and InvertFlex 5K model supports 48VDC system Connect all battery packs as below chart It s suggested to connect at least 100Ah capacity battery for 1 3KVA model and at least 200Ah capacity battery for InvertFlex 5K model for more information please visit www flexston com Inverter 1KVA Inverter 2KVA 3KVA NOTE Please only use sealed lead acid battery or sealed GEL AGM lead acid battery 3 Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened with torque of 2 3 Nm Make sure polarity at both the battery and the inverter charge is correctly connected and ring terminals are tightly screwed to the battery terminals A WARNING Shock Hazard Installation must be performed with care due to high battery voltage in series CAUTION Do not place anything between the flat part of the inverter terminal and the ring terminal Otherwise overheating may occur CAUTION Do not apply anti oxidant substance on the terminals before terminals are connected tightly CAUTION Before making the final DC connection or closing DC breaker disconnector be sure positive must be connected to positive and negative must be connected to negative for more information please visit www flexston com AC Input Output Connection CAUTION Before connecting to AC input power source please install
23. parallel installation guide for the details ES E ee a e pa pa pa papa ul BB U N e O InvertFlex 5K parallel model LCD display Status indicator Charging indicator Fault indicator Function buttons Power on off switch AC input AC output PV input Battery input Circuit breaker RS232 communication port Parallel communication cable only for InvertFlex 5K Current sharing cable only for InvertFlex 5K Dry contact for more information please visit www flexston com INSTALLATION Unpacking and Inspection Before installation please inspect the unit Be sure that nothing inside the package is damaged You should have received the following items inside of package e The unit x 1 e User manual x 1 e Communication cable x 1 e Software CD x 1 Preparation Before connecting all wirings please take off bottom cover by removing two screws as shown below Mounting the Unit Consider the following points before selecting where to install e Do not mount the inverter on flammable construction materials Mount on a solid surface e Install this inverter at eye level in order to allow the LCD display to be read at all times e For proper air circulation to dissipate heat allow a clearance of approx 20 cm to the side and approx 50 cm above and below the unit e The ambient temperature should be between 0 C and 55 C to ensure optimal operation e The recommended installation position is to be a
24. scscscscsescseseseseseeeeeeeeeeeeseeeeeeeseeeeeeeaueeeeeeeeaeneneaeas 32 for more information please visit www flexston com ABOUT THIS MANUAL Purpose This manual describes the assembly installation operation and troubleshooting of this unit Please read this manual carefully before installations and operations Keep this manual for future reference Scope This manual provides safety and installation guidelines as well as information on tools and wiring SAFETY INSTRUCTIONS 10 11 12 13 WARNING This chapter contains important safety and operating instructions Read and keep this manual for future reference Before using the unit read all instructions and cautionary markings on the unit the batteries and all appropriate sections of this manual CAUTION To reduce risk of injury charge only deep cycle lead acid type rechargeable batteries Other types of batteries may burst causing personal injury and damage Do not disassemble the unit Take it to a qualified service center when service or repair is required Incorrect re assembly may result in a risk of electric shock or fire To reduce risk of electric shock disconnect all wirings before attempting any maintenance or cleaning Turning off the unit will not reduce this risk CAUTION Only qualified personnel can install this device with battery NEVER charge a frozen battery For optimum operation of this inverter charger please follow required spec to s
25. source is disconnected before attempting to hardwire it to the unit for more information please visit www flexston com 4 Then insert AC output wires according to polarities indicated on terminal block and tighten terminal screws Be sure to connect PE protective conductor gt first Ground yellow green L LINE brown or black N Neutral blue InvertFlex 1K InvertFlex 2K 3K 5K 5 Make sure the wires are securely connected CAUTION Important Be sure to connect AC wires with correct polarity If L and N wires are connected reversely it may cause utility short circuited when these inverters are worked in parallel operation CAUTION Appliances such as air conditioner are required at least 2 3 minutes to restart because it s required to have enough time to balance refrigerant gas inside of circuits If a power shortage occurs and recovers in a short time it will cause damage to your connected appliances To prevent this kind of damage please check manufacturer of air conditioner if it s equipped with time delay function before installation Otherwise this inverter charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air conditioner for more information please visit www flexston com PV Connection CAUTION Before connecting to PV modules please install separately a DC circuit breaker between inverter and PV modules WARNING A
26. ter can charge unit but it still can charge CHARGING battery without AC output batteries Charging by PV energy Power saving mode If enabled the output of inverter 4 will be off when connected load is pretty low or not detected Charging by utility and PV energy Only available in InvertFlex 1K 2K 3K model Fault mode Note Charging by utility Only available in Fault mode Errors are caused InvertFlex 1K 2K 3K model a dee PV energy and utility can by inside circuit error or external charge batteries reasons such as over temperature output short circuited and so on CHARGING for more information please visit www flexston com Operation mode LCD display No charging Fault mode PV energy and utility can Note charge batteries Fault mode Errors are caused by inside circuit error or external Utility can power loads when m Power from utility the unit starts up without battery Only available InvertFlex 5K model with single operation reasons such as over temperature output short circuited and so on Charging by utility and PV energy The unit will provide output power from the mains It will Line Mode l Fa also charge the battery at Charging by utility line mode 100 E 25 The unit will provide output Battery Mode power from battery and PV power for more information please visit www flexston com Fault Reference Code 04 Battery voltage is too low US
27. utton operation such as battery charging current AC solar charger priority and acceptable input voltage based on different applications Features e Pure sine wave inverter e Configurable input voltage range for home appliances and personal computers via LCD setting e Configurable battery charging current based on applications via LCD setting e Configurable AC Solar Charger priority via LCD setting e Compatible to mains voltage or generator power e Auto restart while AC is recovering e Overload Over temperature short circuit protection e Smart battery charger design for optimized battery performance e Cold start function Basic System Architecture The following illustration shows basic application for this inverter charger It also includes following devices to have a complete running system e Generator or Utility e PV modules option Consult with your system integrator for other possible system architectures depending on your requirements This inverter can power all kind of appliances at home or office environment including motor type appliances such as tube light fan refrigerator and air conditioner Solar power option r Generator BATTERY ili Utility External Home Appliances Battery packs Figure 1 Hybrid Power System N for more information please visit www flexston com Product Overview InvertFlex 2K 3K NOTE For parallel model installation and operation please check separate
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