CPS 23/28kW User Manual
Contents
1. PV Input Fuses 3 h AC PV1 MIE MPPT1 Output ae EN PV1 PV1 AC 5 Switch PV1 PV1 i e a PVI KE PV1 L1 i L2 pi TERA c bene L3 Pat PY2 Vg PV2 pve t T m Three level PV2 l inverter I PV2 Ly it l i PE AFD Figure 2 2 Schematic diagram of CPS SCA23 28KTL DO series inverter 2 5 Appearance Description Figure 2 3 Appearance sketch of CPS SCA23 28KTL DO series inverter Main items of the inverter 1 Main housing of the inverter 2 Wiring box of the inverter 3 Mounting bracket 4 External cooling fans 5 LED indication lights 6 LCD display 7 Key buttons 8 DC switch DC power on off 9 AC switch AC power on off Chapter 3 Installation install the product step by step Below is the installation procedure for the inverter Please read carefully and Before installation please check that the following items are included in the package Table 3 1 Main items No Item Q ty Note Main housing of the PV inverter Wiring box of the PV inverter Mounting bracket Upon which inverter is hung and mounted onto a wall User manual Installation and operation manual Accessory kit 1 Contains all necessary accessories The 5 Accessory kit contains items listed below Table 3 2 Accessories No Item2. Figure A 3 106 a 4 Figure A 4 b Figure A 5 a Figure A 107 Figure A 5 b Figure A 6 108 CHINT POWER SYSTEMS AMERICA CO LTD Address 700 International Parkway Suite 102 Richardson Texas 75081 Service Hotline 855 584 7168 Email AmericaSales chintpower com Website http www chintpowersystems com SHANGHAI CHINT POWER SYSTEMS CO LTD Headquarters Building 4 No 3255 Sixian Road Songjiang District Shanghai China Tele 86 21 3779 1222 6300 Fax 86 21 3779 1222 6001 Part No 9 0020 0212A0 This manual is subject to change without prior notification Copyright is reserved Duplication of any part of this issue is prohibited without written permission
3. Success Success ClearErrors Failure I i Failure Failure Success Failure FaultOperated 1 VDE0126 1 1 2 VDE4105 3 G59 4C10 11 5CEI 021 6 IEEE 1547 7 BDEW Figure 5 14 System protection parameter configuration 1 The system protection parameters of each grid standard can be set up in 1 SysPara menu Please refer to Chapter 5 4 7 2 2 Restart menu If a fault shutdown happens a severe fault may have occurred inside the inverter The user can perform a force reboot for one time in this menu if the user needs to restart the inverter INSTRUCTION This function is effective only when the fault IntFault0010 0150 in the troubleshooting table occurs The inverter may restore to normal Operation automatically if alarm or protection faults occur This function will not respond when the inverter is in operation mode and a FaultOperated alarm interface will be indicated 71 3 3 Recover menu The manufacturer s parameter default value can be restored when the inverter is not in operation mode Otherwise Fault Operated will be reminded 4 4 ClrErrRecd menu History information of the failures can be wiped clear after confirmation 5 5 Stdset menu The grid standard can only be changed when the inverter is turned off by LCD shut down The change is ine
4. CPS SCA Series Grid tied PV Inverter CPS SCA23 28KTL DO US 480 Installation and Operation Manual Version 1 4 SHANGHAI CHINT POWER SYSTEMS CO LTD 1 Table of Contents Before You Stafts isicissessstscsssscarsssnsdenssaiseandausassrdensccausesssnsacsadsasaseseaauersatucced 4 Chapter 1 IMPORTANT SAFETY INSTRUCTIONS 112 11 1 2 1 5 Chapter 2 Overview izzza a a Ez icz bc azotu aw a zt sd cia 8 2 1 Inverter for grid tied PV systems eee aaa aanaanne1 8 2 2 Product features ees mee ama iarainn Enait 8 2 3 Product protection functions sseeee eee aaa aaa earn ania 9 2 4 Circuit structure design eu eeeeu eee aaa aaa aaa 9 2 5 Appearance Description eseeee eee izni ana 11 Chapter 3 I stallatloO zz zza icz ai aa 12 3 1 Recommendations before installation 2 22 2 421111221 14 3 2 Mechanical installation oseeea eee aaa 15 3 3 Electrical installation eeeeea ooo aaa 28 3 3 1 DC connection eeee eee oaza aaa aaana wie 29 3 3 2 AC and ground connection ee eeeee eee aaa aaa aaenaeiea 41 3 3 3 Communication connection eeessseaee aaa eee aaa cena wia 47 Chapter 4 Commissioning rranvnnnnvennnvnnnnvnnnnvnnnnnnnnnvnnnnnnnnnvnnnnnnnnnvnnnnnnnnnennr 56 4 1 Commissioning CheckliSt
5. 3 Check whether the cable between the inverter 89 and power grid is disconnected or has any fault 4 Contact after sales service personnel 3 GridF OutLim Definition Grid voltage frequency is abnormal or power grid is not detected Possible causes 1 Grid frequency is abnormal 2 Cable connection between the inverter and the grid is poor Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check whether the grid frequency is within the specified range 3 Check whether the cable between the inverter and power grid is disconnected or has any fault 4 Contact after sales service personnel 4 PVVoltOver Definition PV voltage exceeds the specified value Possible causes PV over voltage Recommended solutions 1 Observe for 30 minutes and see whether the alarm will be eliminated automatically 2 Check whether PV voltage exceeds the specified range 3 Turn off the PV input switch wait for 5 minutes and then turn on the switch again 90 4 Contact after sales service personnel 5 PV1 2 Reverse Definition PV module is connected inversely Possible causes PV positive pole and negative pole are connected inversely Recommended solutions 1 Check whether positive pole and negative pole are connected inversely 2 Contact after sales service personnel 6 GFCLErr Defini
6. OT type terminal 1pcs Es ho Core wire Pre insulated end ferrule Core wire OT type terminal Figure 3 28 AC output and ground cable set up Connect the AC L1 L2 L3 N cables to the terminal block and use the OT type terminal to connect the ground cable to the external grounding point at the bottom of the wiring box see the 3 graph in Figure 3 26 Set up the cables referring to Figure 3 29 45 Pre insulated end ferrule 4pcs II Core wire Pre insulated end ferrule eo 44 Ground wire OT type terminal 2pcs Figure 3 29 AC output and ground cable set up INSTRUCTION The attached pre insulated end ferrules match with the 48AWG cables If the cable of other gauge is selected different pre insulated end ferrule is needed and provided by the installers 4 When the output of the inverter is connected to the grid an AC circuit breaker is recommended to be installed to safely disconnect the inverter from the grid when overcurrent happens Either a 3 pole or a 4 pole AC circuit breaker can be used The maximum breaker size allowed is 50A or 70A A smaller breaker may also be used keeping in mind that a smaller breaker may result in nuisance trips that may need servicing Table 3 9 Specification of AC breaker selection Inverter AC breaker rated current A CPS SCA23KTL DO 50 CPS SCA28KTL DO 70 46 3 3 3 Communicat
7. eeee eee aaa aaa aaa aaa wanaaca 56 4 1 1 Mechanical installation e oseeea aaa aaa anna 56 4 1 2 Cable connections e seee eee aaa eee aaa aaa aaa ana wia 56 4 1 3 Electrical check ueoo ooo ea aaa aaa ana aow aaa anawa 56 4 2 Commissioning steps Lese wyzna EA AAAA PE AAA a AE 56 Chapter 5 User Interface r nnsnvnnnnvnnnnvnnnnvnnnnvnnnnnnnnnvnnnnnnnnnvnnnnnnnnnvnnnnnennnnnnr 59 5 1 Description of LCD panel eeeeee aaa aaa aaa aaa aenaaiea 59 5 2 Operation State ee eeeeeue eee aaa aaa aaa aini cwi 61 5 3 Interface types 0 eesueea aaa ana ian 61 5 4 Menu TUNCHONS sze aa A pa AA ALE 63 5 4 1 Operation information eeeeeee es ea aaa asa saaaa enia 64 5 42 Alam o od Pas e ay eet ada 65 5 4 3 FHIStONY soap R EE 65 5 4 4 System configuration 2 seeeeea aaa aaa aaa aaa aaaaa nana 67 5 4 5 Power dispatch sus ozone 70 5 4 6 System protection parameters setup 122111122111112 70 5 4 7 System control parameters e ueeeua aa eaa asza aeaaaasanae 72 5 4 8 Arcing fault current interruption seeee eee eeaa aa ianaanea 79 Chapter 6 Operation cciicccccsicetcccceccieccnexscssceccctedcnctzcceeessaceccnceccenexcendeceesiatess 82 6A Sta UD uu ised BIE Niele Ll Soe es 82 6 2 SHUECOWN i ciniel ea hie eR 82 6 3 Operation mode used BRAU
8. 80 In the System Setting gt OtherCmd menu execute ARCFaultClear command to clear ARC Protect fault alarm and LCD will show Succeed if the fault is successfully cleared as shown in Figure 5 21 AFCIOperation Enable ARCFaultClear Succeed Figure 5 21 Manually clear ARC Protect fault 81 Chapter 6 Operation 6 1 Start up Manual start up Manual start up is required after regulation setting or manual fault shut down Move the cursor from the main operation interface to 4 Setting Press ENT and go to submenu 1 ON OFF Then move the cursor to ON and press ENT to start the inverter Then the inverter will start up and operate normally if the start up condition is met Otherwise the inverter will go to stand by mode Automatic start up The inverter will start up automatically when the output voltage and power of PV arrays meet the set value AC power grid is normal and the ambient temperature is within allowable operating range 6 2 Shut down Manual shutdown Normally it is not necessary to shutdown the inverter but it can be shut down manually if regulation setting or maintenance is required Move the cursor from the main operation interface to 4 Setting Press ENT and go to submenu 1 ON OFF Move the cursor to OFF and press ENT and then the inverter will be shut down Automatic shutdown The inverter will be shut down automatically when t
9. Internal protection of the inverter Possible causes 92 Protection procedure occurs inside the inverter Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Contact after sales service personnel Fault Definition Internal fault of the inverter Possible causes Fault occurs inside the inverter IntFault0010 0150 Recommended solutions 1 The inverter can be forced to restart once if it is required by operation and if it is confirmed that there is no other problem 2 Contact after sales service personnel INSTRUCTION The actual display of PV VoltOver is PvlvVoltOver or PV2VoltOver The actual display of PV Reverse is PV1Reverse or PV2Reverse DANGER Please disconnect the inverter from AC grid and PV modules before opening the equipment Make sure hazardous high voltage and energy inside the equipment has been discharged Do not operate or maintain the inverter until at least 5 minutes after disconnecting all sources of DC and AC 93 7 2 Product maintenance 7 2 1 Check the electrical connection Check all the cable connections as a regular maintenance inspection every 6 months or once a year 1 Check the cable connections If loose please tighten all the cables referring to 3 3 Electrical installation 2 Check for cable damage especially whether the cable s
10. 515mm s 18 7 in 475mm 15 9 in 405mm 13 7 in 347mm 10 9 in 277mm 85in mm 6 2 in 157mm a 97mm D Figure 3 17 External connection ports 28 OOPROOBHHHO External ground connection point Side hole for DC input cable 1 1 4 Side hole for AC output cable 1 1 4 DC input fuse holders AC output terminal block Li te L3 N OUTPUT EJ O Lo Nop 000006 A gt Figure 3 18 Internal connection points Knockout holes for DC input cable 1 1 4 or 1 Knockout hole for AC output cable 1 1 4 or 1 Knockout hole 1 2inch amp 3 4inch for comm cable Knockout hole 1 2inch amp 3 4inch for comm cable reserved Internal ground connection point amp grounding studs Choose the cables for inverters according to the following configuration table Table 3 3 Cables specifications Position Cable DC input DC cables specifications refer to Table3 6 AC output Cable 10 2AWG 8AWG cable recommended L1 L2 L3 N PE Cable 10 6AWG 8AWG cable recommended RS485 UTP CAT 5e or 3x 22 18AWG communication cable eg communication Belden 3106A 29 3 3 1 DC connection 1 Working mode CPS SCA23 28KTL DO series inverter has two PV inp
11. When the inverters are monitored via the RS485 communication the unique RS485 address for each inverter can be set through the LCD interface Up to 31 inverters can be connected together in the RS485 communication network The Daisy chain topology is recommended for the RS485 network connection as shown in Figure 3 39 And the port RS485 IN should be connected to the port RS485 OUT of other inverter for RJ45 connections Other communication topologies such as the star networks are not recommended Figure 3 39 R485 network connection Reference to Figure 3 36 If there are multiple inverters in the RS485 networking the selector switch S402 of the last inverter in the daisy chain should be in ON position to have the 1200hm terminal resistor enabled while keeping the selector switch S402 of other inverters in OFF position to disable the terminal resistor 55 Chapter 4 Commissioning WARNING Please follow the guidelines below before on grid operation to eliminate possible dangers to ensure safety 4 1 Commissioning Checklist 4 1 1 Mechanical installation Make sure that the mounting bracket is secure and all the screws have been tightened to the specified torque values Please refer to 3 2 Mechanical installation 4 1 2 Cable connections gt Make sure that all cables are connected to the right terminals gt The appropriate cable management is important to avoid physical damage gt The polarity of DC inpu
12. gt UP gt DOWN Press ENT to confirm and set the current system parameters as shown in Figure 5 12 There are 7 submenus in 4 Setting 1 ON OFF 2 Language 3 Buzzer 4 SysTime 5 Commun 6 OtherCmd and 7 NetConfig ON OFF ON State PX Francaise Italiano LONOBE English Deutsch i 2 Language 4 Setting 3 Buzzer 4 SysTime EnglishVer EnglishVer EnglishVer 5 Commun KeyBeep 6 OtherCmd Enabled 7 NetConfig AlarmBeep Disabled U 2009 12 15 21 14 Address 2 BaudRate 3 1 2400 2 4800 3 9600 4 19200 ARCOption IPAddr 10 122 ARCFaultClear 1 123 MPPTOption SubMask 255 255 MPPTCycle 255 Min 0 GateWay 10 MPPTScan 122 1 254 DHCP DNSSer 10 lt Enable Disable gt 0 StaticiP 1 Figure 5 12 System setup menu and submenu 67 1 The inverter can be started and shut down with 1 ON OFF menu Move the cursor to ON and press ENT ON State will then be indicated at the bottom of LCD screen move the cursor to OFF and press ENT then OFF State will be indicated as well The inverter will stand by instead of working normally if the startup conditions do not meet the set value even if ON is selected The inverter will be shut down immedia
13. 122lbs 55kg Orientation 15 90 degrees from horizontal Safety PV Arc Fault Circuit Protection Type 1 Safety and EMC Standard UL1741 2010 CSA C22 2 NO 107 1 01 IEEE1547 FCC PART15 Grid Standard IEEE1547 2003 IEEE1547 1 2005 101 Note 1 When the DC input voltage is lower than 480V or higher than 800V the inverter begins derating as shown in Figure 8 1 300 500 800 900 1000 PV Voltage V Figure 8 1 SCA23 28KTL derating curve of PV input voltage Note 2 When the ambient temperature is higher than 113 F 45 C the output power begins derating as shown in Figure 8 2 Po Pn 100 80 60 40 7 20 7 gt 113 F 140F Tamb 45 C 600 Figure 8 2 SCA23 28KTL derating curve with high temperature 102 Note 3 When the altitude is higher than 6562ft 2000m the power of the inverter needs derating as shown in Figure 8 3 Po Pn 100 70 6562ft 13123ft 2000m 4000m Figure 8 3 SCA23 28KTL derating curve with high altitude Note 4 The inverter can output the AC power with full loads under 88 110 of the rated grid voltage When the grid voltage is lower than 88 the output current will be limited within the allowable Max current 0 88 Un 1 1 Un Grid Voltage Figure 8 4 SCA23 28KTL derating curve of grid voltage 103 Chapter 9 Limited Warranty The warranty policy of this product is specified in the contr
14. AC Output Rated AC Output Power 23kW 28kW Max AC Output Power 23kW 28kW Rated Output Voltage 480Vac Output Voltage Range 422 528Vac Grid Connection Type 30 N PE Max AC Output Current 27 7A 33 7A Rated Output Frequency 60Hz Output Frequency Range 59 3 60 5Hz Power Factor gt 0 99 0 8 adjustable 1 Exceeding the Max DC Input Voltage may cause permanent damage to the equipment 2 The Output Voltage Range may differ according to specific grid standard 3 The Output Frequency Range may differ according to specific grid standard 100 Current THD lt 3 AC Disconnection Type Load rated AC switch System Topology Transformerless Max Efficiency 98 6 CEC Efficiency 98 0 Stand by Night Consumption lt 20W lt 2W Environment Protection Degree NEMA 4 Cooling Variable speed cooling fans Operating Temperature Range 13 F to 140 F 25 to 60 derating from 113 F 45 C Storage Temperature Range 22 F to 158 F 30 C to 70 C Operating Humidity 0 95 non condensing Operating Altitude 13123 4ft 4000m derating from 6561 7ft 2000m Display and Communication Display LCD LED Communication Standard RS485 Modbus Mechanical Data Dimensions WxHxD 23 6x39 4x9 1in 600x1000x230mm Weight
15. Please confirm the following things before replacing the inverter 1 The inverter is turned off 2 The DC switch of the inverter is turned to OFF position Then Replace the inverter according to the following steps a Unlock the padlock if it is installed on the inverter Figure 7 2 Unlock the padlock b Use a No 2 Phillips head screwdriver to unscrew the 2 screws on both sides of the inverter Figure 7 3 Remove the screws on both sides 97 c Use a No 10 Hex wrench to remove the 4 screws between the main housing and the wiring box Lift up the main housing and disconnect from the wiring box Figure 7 4 Disconnect the main housing from the wiring box d Use a No 2 Phillips head screwdriver to remove the 2 screws on the left side of the wiring box and take off the cover board Put the board on the connector of wiring box Torque value 1 2N m I r ZZL Figure 7 5 Install the cover board on the connector of the wiring box 98 7 3 De installing the inverter De install the inverter according to the following steps when the service time is due or for other reasons DANGER Please disconnect the electrical connection in strict accordance with the following steps Otherwise the inverter will be damaged and the service personnel s life wi
16. screen Please refer to 5 4 2 Present fault for detailed operation The causes of a fault can be identified based on the faults listed in Table 7 2 Proper analysis is recommended before contacting after sales service There are 3 types of fault alarm protection and hardware fault Table 7 2 LCD Troubleshooting table Alarm 1 TempSensorErr Definition Prompt detection of abnormal temperature Possible causes 1 Temperature Sensor socket connecter has poor contact 2 Temperature Sensor is damaged Recommended solutions 1 Observe temperature display 2 Switch off 3 phase working power supply and then reboot the system 3 Contact after sales service personnel 2 CommErr Definition Communication inside inverter fails Possible causes Terminal block connecters of internal communication wires have poor contact Recommended solutions 1 Observe for 5 minutes and see whether the alarm 87 will be eliminated automatically 2 Switch off 3 phase working power supply and then reboot the system 3 Contact after sales service personnel 3 ExtFanErr Definition Cooling fan failure by visual check Possible causes 1 Fan is blocked 2 Fan service life has expired 3 Fan socket connecter has poor contact Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Check for foreign objects on fan
17. Common 8 strings Configuration 23kW 28kW PV1 lt nH INKY 2MPPT 3 na PV1 lt 2 mH Independent peas Inverter Mode PV2 lt A A gt IN2 o gt oH PV1 4 3 1MPPT ABE H iNi Parallel i Inverter Mode PV2 L A B PV2 lt gt E IN Current 6 3A 7 3A DC cable 16 6AWG 16 6AWG Note 1 The temperature rating of the input wirings should be no less than 90 C 1947 Note 2 The recommended fuse types are configured according to the condition that the input strings are the same d Check the polarity Figure 3 22 before plugging the DC connectors with the cables of PV strings according to the following steps i Use a multi meter to measure the PV strings cable ends and check the polarity ii The positive terminal of cable should match the positive terminal of inverter s DC input 39 iii The negative terminal of cable should match the negative terminal of inverter s DC input NOTICE It is important to use a multi meter to check the polarity of DC input cables to avoid any risk of reverse polarity Multi Meter EEE Figure 3 22 Polarity check e Knock out the holes of the DC side and plug the suitable conduits of 1 1 4 or 1 inch through the holes Then put the cables through the conduits inside the wiring box f The DC cables are recommended to be pre insulated to ensure the cables are well connected Crimp the DC cables with the attached pre insu
18. Max grid FmaxTripT2 S 0 0 05 600 00 frequency Recovery threshold value of GridFmaxRecT Hz 49 00 60 40 66 00 Max grid frequency Recovery threshold value of GridFminRecT Hz 45 00 59 40 60 00 Min grid frequency Recovery time of grid GridFRecT S 0 300 00 600 00 frequency protection Threshold value of grid GridV Unbal 0 1 2 6 10 0 voltage unbalance 74 2 3 ON OFF menu Set up the start up and shut down control parameters Table 5 4 Start up and turn off control parameters Setup range lower limit Parameter name Description default amp Fr limit PVStarvol V PV start up PV start up voltage 300 0 330 0 400 0 0 330 0 400 0 0 01 0 92 2 00 CPS SCA23KTL SoftStep KW S Soft step 0 01 1 12 2 00 CPS SCA28KTL Disable Disable SoftOffOption Soft turn off option Enable 0 01 1 38 2 00 CPS SCA23KTL 0 01 1 68 2 00 CPS SCA28KTL IsoResis KOhm 10 0 250 0 1000 0 GridReStep KW S Grid fault recovery step 0 01 0 04 2 00 3 4 PowerContr menu relative functions of active reactive power control OffPStep KW S Turn off power step and over frequency derating including ActiveContr RePowerContr and FreqDeratCtrl menus 1 ActiveContr menu adjust the active power of AC output the range is 0 100 0 2 RePowerContr menu set up the reactive power control mode including 6 submenus 1 Non
19. There are 4 submenus in 3 65 History 1 HistErr 2 OP Recd 3 Version and 4 TotalTag 1 The error log can store up 100 fault messages in 1 HistErr menu 2 The last 21 days of operation history data is available to be checked in 2 OP Recd menu All variable names in the data comply with the content in 1 OP Info menu of the main interface The users can select the 2 OP Recd menu and input the retraceable days For example the input number is 21 If the current date is December 15th the LCD will indicate the operation information of 21 days before that date which is November 24th 3 The DSP version LCD version and serial number of the product are listed in 3 Version menu 4 Cumulative generated power from the first day the inverter began working is available to be checked in 4 TotalTag menu No NoError 1 St2010 12 15 20 50 Yes SPI Error 2 Ed2010 12 15 20 59 SPI Error 1 HistE i EE Pls input date epay 123 5KWh 2 OP Recd gt o m b PDayPk 20 0KW 3 Version 2 12 15 DayT 7 0h 4 TotalTag 3 History gt DSPVer 0 01 LCDVer 0 01 Serial No 10731220003 TotalTag KWh 2123 5 Figure 5 11 History menu and submenu 66 5 4 4 System configuration Move the cursor to 4 Setting in the main interface Press ENT to enter the password UP gt DOWN
20. any private AC power equipment CAUTION CPS SCA23 28KTL DO series inverter is approx 55kg 122 pounds Please ensure the mounting is properly installed before hanging the inverter on the bracket gt gt gt CAUTION CPS SCA23 28KTL DO series inverter have the Arc Fault Detection feature in the disabled mode by default Please ensure that this setting meets local code requirements If you need to enable this feature for your install then please call our HOTLINE 855 584 7168 or contact your local sales or service manager for assistance INSTRUCTION Please check with your local electricity supply company before selecting the grid standard If the inverter is operated with a wrong grid standard the electricity supply company may cancel the operation license Putting the inverter into operation before the overall system complies with the national rules and safety regulation of the application is not permitted 2 Chapter 2 Overview 1 Inverter for grid tied PV systems CPS SCA23 28KTL DO US 480 series inverter is suitable for use with commercial and large scale PV grid tied systems The system is generally made up of PV modules DC power distribution equipment PV inverter and AC power distribution equipment Figure 2 1 The inverter converts the DC from PV modules to AC with the same frequency and phase as the AC grid All or part of the AC power is supplied to local loads and the sur
21. gt gt gt gt gt gt Figure 6 3 Inverter system in standby mode 4 Fault mode as shown in Figure 6 4 The inverter will disconnect from the power grid and turn into fault mode when the inverter or power grid fails Check the specific cause in Troubleshooting table Table 7 2 according to the fault message displayed on the LCD and eliminate the fault referring to the instructions SPICommeErr Figure 6 4 Fault indication interface WARNING All the installation and wiring connections should be performed by qualified technical personnel Disconnect the inverter from PV modules and the AC supply before undertaking maintenance Do not operate or maintain the inverter until at least 5 minutes after disconnecting all sources of DC and AC 6 4 Grid tied power generation CPS SCA23 28KTL DO US 480 series inverter has an automatic grid tied power generation process It will check constantly whether AC power grid meets the conditions for grid tied power generation and also test whether the 84 PV array has adequate energy After all conditions are met the inverter will enter grid tied power generation mode While in grid tied power generation the inverter can detect the power grid at all times and also keep the photovoltaic array output in maximum power point tracking MPPT mode In case of any abnormity the inverter will enter the protection program immediately In low light conditions when p
22. wire box cover 1 Use a 3mm 0 12in Hex screwdriver to remove the 4 screws on the wiring box and take off the cover see Figure 3 16 a Figure 3 16 a Take off the cover of the wiring box 2 To replace the cover use a 3mm 0 12in Hex screwdriver to replace the 4 screws on the cover INSTRUCTION It is important to use a hand tool e g Hex key Allen key socket or T handle 3mm and not power drivers or other types of screw drivers Also it is important to hold the cover in alignment with balanced force across the cover not weighted toward any edge for screw to Pem nut alignment Partially engage all four screws to Pem nuts a few rotations before tightening any one screw This is important to maintain alignment and avoid thread damage 26 INSTRUCTION We posted on our website www chintpowersystems com under the Service menu a how to video showing the best technique for installing the wire box cover 27 3 3 Electrical installation The connection interface of CPS SCA23 28KTL DO series inverter BYPASS INPUT TERMINAL DC SPD AC SPD ojojojojpjpjojoja w w o I mmj m m www a n njnj n n r w w m w m ojojpjojojojojojojwjw c E E B i 3 e 1 2 3 2 3 4 1 2 3 nie N fe N Figure 3 16 b Full view of wiring box with options 20 3 in
23. 23in flat screwdriver 2 8mm hex socket wrench 3 Diagonal pliers 4 Wire stripping pliers 5 Crimping pliers Table 3 8Torque value AC output terminal block 3 5 N m Internal grounding bar 1 6 N m Internal grounding stud 1 6 N m External grounding point 1 6 N m 42 D li ohokol ei6i0i0 h U aa TH WY w AUD u NGT Jr o q occa NIe 7 por 186 MM ZF MM please see the user manual a 4 la HI High touch current Earth connection essential BU 4 before connecting supply Figure 3 26 a AC output and ground cable connection 43 1 Figure 3 26 b AC output and ground cable connection The AC cables are recommended to be pre insulated to ensure the cables are well connected Connect the AC L1 L2 L3 N cables to the terminal block and the ground cable to the grounding bar see the 3 graph in Figure 3 26 Set up the cables referring to Figure 3 27 44 2 3 r Pre insulated end ferrule 5pcs FI IG Cora wire Pre insulated end ferrule Figure 3 27 AC output and ground cable set up Connect the AC L1 L2 L3 N cables to the terminal block and use the OT type terminal to connect the ground cable to the internal grounding stud inside the wiring box see the a graph in Figure 3 26 Set up the cables referring to Figure 3 28 Pre insulated end ferrule 4pcs V
24. 4 Inverter pillar mounting dimensions INSTRUCTION If the inverter is installed in open air on metallic brackets instead of 18 solid wall the top clearance distance can be reduced to as minimum as 100mm 3 94in 4 Mount the inverter onto the bracket 1 Mark the 8 holes on the bearing surface for mounting the bracket as shown in Figure 3 5 Z M A 550mm min 250mm 250mm pn mm 21 7in 8tin 84n 425mm min 16 7in 522mm 20 55in 140mm 5 51in 1100mm min 43 3in 813mm min 32in Figure 3 5 Dimensions of holes on the bearing surface 2 Drill holes at the marked positions with a 10mm 0 4in drill and put the M8 expansion tubes nto the holes Fasten the mounting bracket with the M8x25 assembling bolts n the accessory kit Tool Electric drill P10mm 0 4in head No 13 wrench 19 2 pol L p s 7 l J a Figure 3 6 Secure the mounting bracket 3 Hang the inverter onto the mounting bracket as shown in Figure 3 7 and Figure 3 8 Lift mounting Take out the lifting eye nut M10 2pcs from the accessory kit and screw them on the bolts at the top of the inverter Use sling rope or bar inserted through both lifting eye nuts to lift the inverter onto the bracket The minimum angle between the two sling ropes should be less than 90 degrees Manual mounting Two people grab th
25. 7 The Table 5 5 lists the parameters of QReactSet PF Set PF P Curve and Q U Curve modes Press ENT to start up the modes after the parameters are set up Table 5 5 Parameters of reactive power control IEEE 1547 Setup range lower limit Mode Parameter Name Description default amp upper limit ReactiveComp z 0 80 1 000 080 PFCurveP1 0 50 0 100 0 See Figure 5 17 PFCurvePF1 0 800 1 000 0 800 See Figure 5 17 PFCurveP2 0 100 0 100 0 See Figure 5 17 PF P PFCurvePF2 0 800 0 900 0 800 See Figure 5 17 PF curve trip 100 0 0 0 100 0 PFCurvTripV V 480 0 480 0 528 0 voltage PF curve revocation PFCurveReV V 422 4 432 0 480 0 voltage QuCurveU1 V 480 0 518 4 528 0 See Figure 5 18 QuCurveQ1 100 0 0 0 100 0 See Figure 5 18 QuCurveU2 V 480 0 528 0 528 0 See Figure 5 18 100 0 50 0 Q U QuCurveQ2 See Figure 5 18 100 0 QuCurveU1i V 422 4 441 6 480 0 See Figure 5 18 QuCurveQ1i 100 0 0 0 100 0 See Figure 5 18 QuCurveU2i V 422 4 432 0 480 0 See Figure 5 18 78 100 0 50 0 QuCurveQ2i See Figure 5 18 100 0 QuCurvTripP 5 0 20 0 100 0 Qu curve trip power Qu curve revocation QuCurveReP 5 0 5 0 100 0 power 3 FreqDeratCtrl menu Set up the parameters of over frequency active power deraring INSTRUCTION The FreqDeratCtrl function is not ava
26. 85 communication cables according to the following table Table 3 14 Cables specifications Cable RS485 UTP CAT 5e or 3x 22 18AWG communication cable communication eg Belden 3106A AC porn Figure 3 36 RS485 connection 1 Cable connection of RS485 communication RJ45 connector 2 Cable connection of RS485 network communication RJ45 connector 3 Cable connection of RS485 communication 5 pin connector 4 Cable connection of RS485 network communication 5 pin connector 53 Colour Function White orange 485 Orange N C White green 485 Blue N C White blue N C Green N C White brown COM Brown N C Figure 3 37 Crimp RJ45 connector on the RS485 and Ethernet cable 1 NC 2 NO 3 Red RS485 4 Blue RS485 5 Green COM 1 2 1 RS485 communication of single inverter 2 RS485 network communication Figure 3 38 Fasten the cable terminal on the RS485 5 pin connector a Put the communication cable through the conduits inside the wiring box and crimp the cable as shown in Figure 3 37 and Figure 3 38 Tools Wire stripping pliers crimping pliers for RJ45 connector 54 Wire stripping pliers 2 or 2 5mm 0 08in or 0 1in flat screwdriver for 5 pin connector b Plug the crimped connector into the corresponding port RS485 network connection
27. A DC cable 16 6AWG 16 6AWG 36 Common 5 strings Configuration 23kW 28kW 1MPPT Parallel Inverter Mode pvi _ AI 1MPPT m Cm Parallel EH Inverter Mode PV2 4 PV2 Z IN2 Current 10A 11 6A DC cable 1676AWG 1676AWG Common 6 strings Configuration 23kW 28kW 2MPPT EJ PV1 Independent are ea inverter Mode ae an i PV2 L z IN2 37 1MPPT Parallel Inverter Mode Current 8 4A 9 7A DC cable 1676AWG 1676AWG Common 7 strings Configuration 23kW 28kW 1MPPT Parallel Inverter Mode 1MPPT Parallel Inverter Mode Current 7 2A 8 3A DC cable 1676AWG 1676AWG 38
28. D panel the keys is shown in Table 5 2 Table 5 1 LED Indication LED light Name Status Indication Light Energized control panel starts to Working on work POWER power Light light i Power supply not working o RUN Grid tied Light In grid tied power generation state 59 operation on indication A Derated running status light up 0 58 as light light off 1 65 Light In other operation status or power off supply not working Light Grid Grid is normal on status GRID Flash Grid fault light up 0 5s light off 1 65 indication l Light light n Power supply not working o Light Indicates a Fault on Fault Slow Indicates Alarm light up 0 5s light off status flash 2s FAULT indication Fast Protective action light up 0 5s light light flash off 0 58 Light A No fault or power supply not working o Table 5 2 Definition of the keys Key Description Definition of function ESC Escape key Back end mute Confirm entering the menu confirm set ENT Enter key value Switch to parameter setting mode Page up in selection menu 1 when setting parameters 60 v D Page down in selection menu 1 when own setting parameters 5 2 Operation state Table 5 1 indicates the definitions of LED i e indicates the information of the inverter s operation state It indicates that the system is energized and under DSP co
29. ER eRe 82 6 4 Grid tied power generation eceeeceeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeaes 84 Chapter 7 Maintenance and De installation s 2m 86 7 1 Fault shut down and troubleshooting s2111 12122 86 7 1 1 LED fault and troubleshooting essseaaaasanaaane 86 7 1 2 LCD fault and troubleshooting e sssaeasaaaasnaaasanaa 86 7 2 Product maintenance 2 eseeee esse enea aaa zazna ian niee 94 7 2 1 Check the electrical conneciion e sssaeaaaaaaaasaaa 94 7 2 2 Clean the air vent filter eoee eee aaa aaa aaa 94 7 2 3 Replace cooling fans esseeea aaa aaa a aaa iani anna 94 7 2 4 Replace the inverter e sseeeea aaa aaa naaa a iann a ioh 97 7 3 De installing the inverter see aaa aaa ana aaa a anawa 99 Chapter 8 Technical Data 100 Chapter 9 Limited Warranty userasnvnnnvnnnvnnnnvnnnvnnnnennnvnnnvnnnnennnennnvnnnnnnnnennnvnnnnennnennnvnnnnnnnnen 104 Appendix Instruction of inverter selection rsernsarnnnvnnnvnnnnvnnnvnnnvvnnnvnnnvnnnnennnvnnnvnnnnennnen 105 Before You Start This manual contains important information regarding installation and safe operation of this unit Be sure to read this manual carefully before using Thank you for choosing this CPS Grid tied PV Inverter This P
30. M 8 Brown N C RS485 1 NC port Did NC Spin 3 RS485 connector 4 RS485 P208 5 COM Selector on on 1 Disable the termination resistance switch for LIT 2 Enable the terminal resistor setting the 1 2 1200 terminal resistor of the RS485 communic 48 ation 402 elector PAR PAR 1 Independent mode switch for IND IND gt Parallel mode setting the 1 2 PV connection mode 5401 Q Dry contact communication The inverter features an alarm function that opens or closes a dry contact on the communication board available both as contact normally open N O and as contact normally closed N C as shown below N O N C COM Figure 3 31 Dry contact communication port The voltage and current rating of the dry contact shown in the following table must not be exceeded in any case Table 3 11 Rating of dry contact 49 Different modes of dry contact output can be accessed by connecting different pins of the P205 connector as shown in following table Table 3 12 Working modes of dry contact Status in fault Status without fault condition Connection Plan You can connect a LED or other loads to indicate the operational status of Dry contact communication condition port the inverter as shown in the following figure rL N or L N z Line circuit Breaker 3 A COM Fault In operation COM N C N
31. NSTRUCTION indicates important supplementary information or Olep e gt provides skills or tips that can be used to help you solve a problem or save you time Markings on the product A HIGH VOLTAGE The product works with high voltages All work on the product must only be performed as described in this document A HOT SURFACE The equipment is designed to meet international safety standards but surfaces can become hot during operation Do not touch the heat sink or peripheral surfaces during or shortly after operation EARTH GROUND This symbol marks the location of grounding terminal which must be securely connected to the earth through the PE protective earthing cable to ensure operational safety WARNING All the installation and wiring connections should be performed only by qualified technical personnel Disconnect the inverter from PV modules and the Power Grid before maintaining and operating the equipment DANGER Please disconnect the inverter from AC grid and PV modules before opening the equipment Make sure hazardous high voltage and energy inside the equipment has been discharged Do not operate or maintain the inverter until at least 5 minutes after disconnecting all sources from DC and AC sides u NOTICE This inverter is designed to connect AC power only to the public grid Do not connect the AC output of this equipment directly to
32. O In operation 8 Light on in trouble free operational Light on in error Figure 3 32 Schematic diagram of dry contact communication 50 If you connect the contact port to the power distribution grid you must install an individual miniature circuit breaker between the dry contact and the power distribution grid Dry contact communication cable connection a Knock out the holes for suitable cable conduits of 3 4 inch b Put the dry contact communication cable through the cable conduit and inside the wiring box c Use double layer insulated cables Strip the cables according to the following requirements Tool Wire stripping pliers D A Ll L2 Figure 3 33 Wire stripping Table 3 13 Cable set up Cable type Double layer insulated cable Cross section area of conductor 0 2 mm 0 75 mm Length of stripped outer wire skin Length of stripped inner wire skin 51 Ls 8 d Connect wires to the terminal Tool 2 or 2 5mm flat screwdriver Figure 3 34 Wire connection e Plug the cable terminal into the P205 connector i Figure 3 35 The dry contact communication cable connection 52 RS485 communication cable connection Choose the RS4
33. ON The total weight of the CPS SCA23 28KTL DO series inverter is about 55kg 122 pounds Please ensure the mounting is properly installed before hanging the the inverter on the bracket 5 Attach the main housing and the wiring box to the mounting bracket with the M5x10 bolts 6 pcs see Figure 3 12 Tool No 2 Phillips head screwdriver torque value of 1 6N m 23 Figure 3 12 Fix the main housing and wiring box on the bracket 6 Attach the cover board shown in Figure 3 10 to the left side of the wiring box see Figure 3 13 Tool No 2 Phillips head screwdriver torque value of 1 2N m Figure 3 13 Attach the cover board to the left side of the wiring box 24 7 Optional Install an anti theft padlock when the installation is complete The anti theft padlock is used to prevent the inverter from being stolen when the equipment is installed outdoors You can lock the inverter on the bracket as shown in Figure 3 14 Figure 3 14 Location of the anti theft padlock The anti theft padlock should meet the requirement of the dimensions shown in Figure 3 15 B i Recommended lock size A 03 6mm B 20 50mm C 20 50mm Figure 3 15 The dimensions of anti theft padlock 25 5 Removing Replacing the
34. Q ty Note 1 M8 Expansion tubes 8 For mounting bracket 2 M8x25 assembling bolts 8 For mounting bracket For wiring box and main housing 2 3 M6X16 screw 6 spare parts For mounting bracket and inverter 4 M5X10 screw 8 external ground connection 5 M3X8 screw 2 For Partition plate 1 spare part For internal ground stud connection 1 6 M5 flange nut 2 spare part 7 Lifting eye nut M10 2 For lifting the main housing 8 OT type terminal 2 For ground connection Pre insulated end 9 5 For AC output cables 1 spare part ferrule for AC side Pre insulated end 10 8 For ground cables ferrule Pre insulated end 11 20 For DC input cables 4 spare parts ferrule for DC side For RS485 or Ethernet 12 RJ45 connecter 4 communication 2 spare parts 5 pin connector For RS485 communication 3 pin connector For dry contact communication Partition plate For partition signal cable and the power cable INSTRUCTION The items in the accessory kit table above are for the standard configuration The accessories may vary if optional parts are purchased 13 3 1 Recommendations before installation v Check that the product environmental specifications protection degree Operating temperature range humidity and altitude etc meet the requirements of the specific project location v Make sure that the power grid voltag
35. V Inverter is a high performance and highly reliable product specifically designed for the North American Solar market If you encounter any problems during installation or operation of this unit first check the user manual before contacting your local dealer or supplier This user manual is applicable for the following 2 models CPS SCA23KTL DO US 480 and CPS SCA28KTL DO US 480 Instructions inside this user manual will help you solve most installation and operation difficulties Contact your local supplier if the problem still exists Please keep this user manual on hand for quick reference Chapter 1 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS Please read this user manual carefully before product installation CPS reserves the right to refuse warranty claims for equipment damage if the user fails to install the equipment according to the instructions in this manual Warnings and symbols in this document DANGER DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE NOTICE indicates a hazardous situation which if not avoided could result in equipment working abnormally or property loss INSTRUCTION I
36. act otherwise the warranty period is 5 years For service Chint Power Systems America will provide local support For Warranty terms please refer to the CPS America standard warranty policy in place at time of purchase 104 Appendix Instruction of inverter selection Table A 1 Optional accessory fm fee uCPS SCA23 28KTL DO US 480 inverter 1 looosDp tt ooo 0000000 fa Options L od E The following figure shows the wiring box equipped with the optional components BYPASS INPUT TERMINAL DCSPD ACSPD ajajajojajnjojojoja a o tofnfnfofonfonfononfonfon onfon O ddddod ddd o oe o B SOB dOn ee o CIC ala Zigbee card or Ethernet card ui L N OUTPUT o Figure A 1 Internal structure of CPS SCA23 28KTL DO inverter with optional components 105 Bypass input terminal instructions 1 Remove the protection cover see Figure A 2 2 Use No 2 Phillips head screwdriver to remove the jumper busbar torque value of 1 6N m see Figure A 3 3 Use No 2 Phillips head screwdriver to install the bypass input terminals 2sets or 1set torque value of 1 6N m see Figure A 5 4 Use No 10 wrench to screw DC input cable on the bypass input terminals torque value of 6 0N m see Figure A 6 5 Reinstall the protection cover see Figure A 7 FEN
37. and use UP and DOWN to enable disable the ARC function and press ENT to confirm the setting 68 2 ARCFaultClear is used to clear the ARC fault Move the cursor to this menu and press ENT The operation result will appear on the LCD ie Succeed or Failed 3 MPPT scan function is effective only when and the total input power is lower than 90 of the active power spec on parallel if not in parallel each input power is lower than 75 of the each input spec The PV voltage should be larger than 300V Once this MPPT scan function is set on LCD it will search the maximum power point in steps of 5V on the full input voltage range and get the maximum power point MPPTOption is used to enable the MPPT Scan Move the cursor to this menu press ENT to set up the function Use UP and DOWN to enable disable the MPPTOption function Press ENT to confirm the setting 4 MPPTCycle is used to set up the cycle time of MPPT Scan Move the cursor to this menu press ENT to set up the cycle time Use UP and DOWN to adjust the MPPT cycle time Press ENT to confirm the setting 5 MPPTScan is to execute the MPPT scanning manually Move the cursor to this menu and press ENT to initiate the scanning The LCD screen will skip to normal operation interface if the MPPT scanning succeeds but remain on the MPPTScan menu interface if the scanning fails 7 Configure the network address in the 7 NetConfig menu Mo
38. blades 3 Switch off 3 phase work power supply and then reboot the system 4 Contact after sales service personnel 4 EepromErr Definition Internal alarm Possible causes Internal memory has a problem Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Contact after sales service personnel Protection 1 TempOver Definition Ambient or internal temperature is too high Possible causes 88 1 Ambient temperature outside the inverter is too high 2 Fan is blocked 3 Convection airflow is insufficient due to improper installation Recommended solutions 1 Confirm that external ambient temperature is within the specified range of operating temperature 2 Check whether air inlet is blocked 3 Check whether fan is blocked 4 Check whether the location of installation is appropriate or not 5 Observe for 30 minutes and see whether the alarm will be eliminated automatically 6 Contact after sales service personnel 2 GridV OutLim Definition Grid voltage exceeds the specified range Possible causes 1 Grid voltage is abnormal Power grid breaks down 2 Cable connection between the inverter and the grid is poor Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check whether the grid voltage is within the specified range
39. e 2 Dispatch 3 Q Set 4 PF Set 5 PF P Set and 6 Q U Set 75 1 None 5 PF P Curve 2 Dispatch 6 Q U Curve 3 QReactSet 4 PF Set Figure 5 15 Reactive power mode 1 None No mode disable reactive power mode 2 Dispatch Remote power dispatch mode Note The ActivePower PF and Q value can be adjusted by remote software if the Dispatch is selected 3 QReactSet Set the Q value Note Change the reactive power by adjusting the Q value reactive compensation 4 PF Set Set the PF value Note Change the reactive power by adjusting the PowerFactor 5 PF P Curve PF curve mode Note The power factor changes according to the power change as shown in Figure 5 16 INSTRUCTION The PF P Curve function is only available for VDE 4105 CEI 0 21 and IEEE 1547 grid standards 76 PF A PFCurveP1 PFCurvePF1 Inductive 1 P 1 Capacitive PFCurveP2 PFCurvePF2 Figure 5 16 PF P curve mode 6 Q U Curve Q U curve mode Note The reactive compensation changes according to the grid voltage change as shown in Figure 5 17 INSTRUCTION The Q U curve function is only available for CEI 0 21 and IEEE 1547 grid standards Q QuCurveU2i QuCurveQ 2i Inductive i QuCurveU1 QuCurveQ1 gt QuCurveUti U V m QuCurveQ1i Capacitive QuCurveU2 QuCurveQ2 Figure 5 17 Q U curve mode 7
40. e handle positions marked in Figure 3 8 and mount the inverter onto the bracket CAUTION A The main housing of the CPS SCA23 28KTL DO series inverter is about 46 5kg 102 5 pounds Please ensure the mounting is properly installed before hanging the the inverter on the bracket It is recommended to have at least 2 people to mount the inverter due to the weight of the equipment 20 7 Figure 3 8 Position of grab handle 4 Install the wiring box GDRemove the cover plate at the bottom of the main housing see Figure 21 3 9 Tool No 2 Phillips head screwdriver Figure 3 9 Cover plate of the main housing Remove the cover board at the top of the wiring box see Figure 3 10 Figure 3 10 Cover board of the wiring box Save the cover board and screws and fix the board on the left side of the wiring box after the wiring box is attached to the inverter housing see step 6 Figure 3 13 Tool No 2 Phillips head screwdriver Glnsert the wiring box to the main housing and use M6x12 screws 4pcs 22 to attach the wiring box to the inverter housing see Figure 3 11 Tool No 10 Wrench torque value of 2 8N m Figure 3 11 Installation of the wiring box CAUTI
41. e is within normal range v Ensure that the local electricity supply authority has granted permission to connect to the grid v Ensure that local code requirement is met by enabling the AFCI function from the LCD screen This feature is disabled by default but can be enabled in the field v Installation personnel must be qualified electricians or people who have received professional training v Sufficient space is provided to allow the inverter cooling system to operate normally v Install the inverter away from flammable and explosive substances v Avoid installing the inverter in locations that exceed the temperature limits specified in the inverter data sheet to limit undesirable power loss v Do not install the inverter near the electromagnetic source which can compromise the normal operation of electronic equipment 3 2 Mechanical installation 1 Dimensions 1 1in 28mm 9 tin 230mm 23 6in 600mm Figure 3 1 Dimensions of CPS SCA23 28KTL DO series inverter 2 Installation method see Figure 3 2 Make sure that the mounting structure wall rack etc is suitable to support the inverter weight Follow the mounting guidelines below a If the location permits install the inverter vertically 15 b If the inv
42. erter cannot be mounted vertically it may be tilted backward by no lower than 15 degrees from horizontal c Do NOT mount the inverter leaning forward d Do NOT mount the inverter in a horizontal position lt 15 degrees e Do NOT mount the inverter upside down 7 Figure 3 2 Mount the inverter correctly NOTICE ZN When the inverter is mounted backward by 215 outdoor shield 16 cover is recommended to be installed above the inverter to avoid direct sunlight 3 Installation space requirement see Figure 3 3 The distances between the inverters or the surrounding objects should meet the following conditions NOTICE The spacing between two adjacently mounted inverters should be 2500mm 19 7 inches Ensure that the air space around the inverter is well ventilated 2300mm 4 11 8in 2 2500mm L 19 7in MENE PE 2600mm 23 6in Figure 3 3 Inverter wall mounting dimensions 17 increased when the ambient temperature is higher than 45 C INSTRUCTION If the inverter is tilted backward by no lower than 15 from horizontal NOTICE The installation clearance between two inverters needs to be the bottom clearance distance can be reduced according to specific conditions LLY F norm sin 11 8in i 400mm I 00mm 11 8in 11 8in Figure 3
43. ess ENTER Set Standard Figure 4 1 Set up grid standard gt 1 VDE 0126 5 CEI 0 21 2 VDE 4105 6 IEEE1547 3 G59 2 7 BDEW 4 C10 11 57 Figure 4 2 Select grid standard 5 When the LCD screen shows the normal operation status Figure 4 3 and the RUN light on the LED panel lights up it indicates that the grid connection and power generation are successful 08 12 13 10 05 08 12 13 10 10 a b Figure 4 3 Normal operation status 6 If the inverter fails to operate normally FAULT light will light up and the fault information will show on the LCD screen Please refer to 7 1 2 Troubleshoot LCD faults 7 Set up system time and language Set up the system time and language according to 5 4 4 System configuration 8 To check the real time operation information you can refer to 5 4 1 Operation information 9 The unit ships with the Arc Fault Detection function in the disabled mode by default To enable this function refer to 5 4 4 System configuration 58 5 1 Description of LCD panel The inverters LCD panel mainly consists of LCD screen LED indicator lights buzzer and 4 keys as shown in Figure 5 1 Chapter 5 User Interface N a POWER RUN i GRID ze FAULT J Interpretation for the indicator lights is shown in Table 5 1 and function of Figure 5 1 LC
44. ffective under normal operation mode Please refer to 6 2 Shut down after the inverter stops working and choose the grid standard as per the local requirement of the electricity supply company NOTICE Please don t change the grid standard when the inverter is in normal operation mode or the change is invalid Please refer to the 6 2 Manual shutdown to turn off the inverter INSTRUCTION CPS SCA23 28KTL DO series PV inverter supports 7 grid standards Please check with your local electricity supply company before selecting the grid standard If the inverter is operated with a wrong grid standard the electricity supply company may cancel the operation license Putting the inverter into operation before the overall system complies with the national rules and safety regulation of the application is not permitted 5 4 7 System control parameters The 1 SysPara menu has 6 submenus including 1 GridVProtect 2 GridF Protect 3 ON OFF 4 PowerContr 5 LVRTSet and 6 OtherProtect 1 1 GridVProtect and 2 GridFProtect menus Set up the parameters of grid voltage frequency protection and recovery etc as shown in Table 5 3 72 a Table 5 3 Parameters of grid voltage and frequency IEEE 1547 etup range lower limit Parameter name Description a default 8 upper limit Threshold value of Level 1 GridV Max1 V 200 0 528 0 552 0 Max grid voltage Thresho
45. gration Embedded DC AC switches and up to 8 fused string inputs eliminates the need for external combiner boxes and simplifies installation 2 3 Product protection functions a 8 RAA 2 R A A A 4 Polarity reverse protection of DC input Short circuit protection DC input insulation against ground monitoring AC output voltage and frequency monitoring Integrated Arc Fault Detection and Interruption Leakage current against ground monitoring Monitoring of DC injection from AC output Anti islanding protection Input and output over voltage protection Input over current protection Environmental temperature monitoring Module temperature monitoring The AFCI function ships from factory in disabled mode to enable this feature please contact CPS at HOTLINE 855 584 7168 number to get instructions 9 2 4 Circuit structure design The basic schematic diagram of CPS SCA23 28KTL DO US 480 series inverter is shown in Figure 2 2 The input of PV modules passes through surge protection circuitry DC EMI wave filter and the front end boost circuitry to achieve maximum power tracking and boost up voltages The output of the inverter converts the DC voltage to 3 phase AC voltage The high frequency AC components are removed with a wave filter Then the 3 phase AC voltage is passed through two stage relays and EMI wave filter to produce high quality AC power
46. gure 3 20c Figure 3 20 b 31 HE UP HOLES Figure 3 20 c q o 5 ol Ji e 16350004 O pron i UJ N eJ N WSss555 Ma O 600000 o Figure 3 21 Location of the PV connection mode selector switch 32 Selector switch for independent mode PV connection parallel mode mode 2 DC fuse configuration CPS SCA23 28KTL DO inverters are equipped with standard 15A 23 28kW Inverter DC fuses Customers must verify that the appropriate fuses are used depending on the actual configuration of PV strings 1 Each independent string of DC input from the PV strings needs fuse protection 2 The rated voltage of fuse should be higher than the Max Voc of each PV string 3 In order to keep the output power normal the rated current of fuse is generally larger than the 1 56 x Max output current from the PV strings 4 In order to protect the PV strings the rated current of fuse should NOT be larger than the sum of the Isc of any two of the PV strings Make sure the rated current of fuse is as small as possible on the condition of normal output
47. he output voltage and power of PV modules are lower than the set value or AC power grid fails or the ambient temperature exceeds the normal range 6 3 Operation mode There are 4 operation modes The following are corresponding indications for each mode 1 System check mode for start up as shown in Figure 6 1 82 Sys Checking gt gt gt gt gt gt Figure 6 1 System self check ongoing This mode indicates that the inverter is checking whether it is ready for normal operation after the manual start up of inverter 2 Normal operation mode Default indication interface for normal operation is shown in Figure 6 2 a and 6 2 b The switching time between a and b is 5 seconds 480 AC ji aov 60 ay 802 kah 08 12 13 10 05 OS 12 13 10 10 a b Figure 6 2 Default indication interface for normal operation In this mode the inverter converts the power generated by PV modules to AC continuously and feeds into the power grid 3 Standby mode as shown in Figure 6 3 The inverter will enter standby mode when the output voltage and power of PV modules do not meet the startup conditions or PV voltage and input power are lower than the set value The inverter will check automatically whether it meets the startup conditions in this mode until it turns back to normal mode The inverter will switch from standby mode to fault mode if a malfunction occurs 83 Standby
48. ilable for the IEEE 1547 grid standard 4 6 OtherProtect menu set up the threshold value of leakage current and output DC component protection Table 5 6 Protection parameters of leakage current and output DC component 24 Setup range lower limit default Parameter name Description amp upper limit Leakage current LeakCurMax mA Se 0 250 300 Max limit 0 135 1000 DC component CPS SCA23KTL IdcMax mA current Max limit 0 165 1000 CPS SCA28KTL 5 4 8 Arcing fault current interruption CPS SCA23 28KTL DO US 480 is embedded with Type 1 DC arcing fault current detection device which stops the inverter from working when arcing fault current is detected on the DC side and shows ARC Protect on the LCD This fault can only be cleared by manual operation This feature is disabled by 79 default in the inverter and to enable this contact CPS customer service at Hotline 855 584 7168 ARC Protect Figure 5 18 ARC Protect fault In the System Setting gt OtherCmd menu execute the AFCI Test the inverter will stop working and test AFCI When the test is over TestFinish will be displayed on the LCD if no fault is detected or AFCI Fault will be shown if a fault occurs as shown in Figure 5 20 MPPT Scan AFCI Test Testing Figure 5 19 AFCI test MPPT Scan AFGI Test AFCI Fault TestFinish Figure 5 20 AFCI test result
49. ion connection CPS SCA23 28KTL DO series inverter supports industry standard Modbus RS485 communication 1 Communication board description U U e o o 7 S o 2 jej o E Sih a o kdl Cc LJ LJ o O sssosssesoeoesoooooo o O Communication board OF o i le o op L H N e USAGI Partition plate Figure 3 30 Communication board 2 Connectors and communication cards Table 3 10 Communication connection interfaces Item Picture Configuration description GDry Please see the section after the table for detailed contact communic information ation port P205 47 QUSB port P207 Firmware upgrade via USB disk RS485 No Colour Function port IN 1 White orange 485 P204 2 Orange N C RS485 3 White green 485 port OUT 4 Blue N C P203 A White bl N C RJ45 5 ite blue C connector 6 Green N C 7 White brown CO
50. lated end ferrule 16Pcs by using the the crimping pliers see Figure 3 23 Tools Diagonal pliers wire stripping pliers crimping pliers wire Pre insulated end ferrule Figure 3 23 Set up the DC input cables g Connect the crimped DC cables to the fuse holders and fasten the screws as shown in Figure 3 24 40 Tools 6mm 0 23in flat screwdriver Torque value 3 4 N m _ sTOTO O Somos 0 0 0 LI BBW 000000 I DI koe gt Figure 3 24 a Conneciion of DC input cables OUTPUT Figure 3 24 b Conneciion of DC input cables 3 3 2 AC and ground connection The following describes how to connect the AC output and ground cables between the inverter and the AC grid 1 Use the 3mm 0 12in Hex screwdriver to remove the 4 screws on the wiring box and take off the cover see Figure 3 16 a 2 Knock out the holes of the AC side and plug the suitable conduits of 1 1 4 or 1 inch through the holes Then put the cables through the conduit inside the wiring box 3 The inverter supports 3 kinds of cable connection on the AC side depending on the grouding connection method The cable set up 41 procedures are illustrated below Figure 3 25 Take off the cover of the wiring box Table 3 7 Necessary tools for cable set up No Tools 1 6mm 0
51. ld value of Level 1 VMaxTripT1 S 0 1 00 600 00 Max grid trip voltage Threshold value of Level 1 GridV Min1 V 0 422 4 480 0 Min grid voltage a Threshold value of Level 1 VMinTripT1 S 0 2 00 600 00 Min grid trip voltage Threshold value of Level 2 GridV Max2 V i 200 0 576 0 624 0 Max grid voltage Threshold value of Level 2 VMaxTripT2 S PG 10 0 16 600 00 Max grid trip voltage Threshold value of Level 2 GridV Min2 V 0 240 0 480 0 Min grid voltage Threshold value of Level 2 VMinTripT2 S 0 0 16 600 00 Min grid trip voltage Recovery threshold value of GridVmaxRecT V 200 0 518 0 533 0 Max grid voltage Recovery time of grid GridVRecT S 0 300 00 600 00 voltage protection Protection threshold value of GridF Max1 Hz 50 00 60 50 66 00 Level 1 Max grid frequency 73 Recovery threshold value of GridVminRecT V 0 432 4 480 0 Min grid voltage rip time of Level 1 Max grid FmaxTripT1 S 0 0 16 600 00 frequency Protection threshold value of GridF Min1 Hz 45 00 59 30 60 00 Level 1 Min grid frequency Trip time of Level 1 Min grid FminTripT1 S 0 0 16 600 00 frequency Protection threshold value of Grid F Min2 Hz 45 00 59 00 60 00 Level 2 Min grid frequency Trip time of Level 2 Min grid FminTripT2 S 0 0 05 600 00 frequency Protection threshold value of GridF Max2 Hz 50 00 61 00 66 00 Level 2 Max grid frequency i rip time of Level 2
52. ll be endangered 1 Turn off the AC breaker and use Padlocks if provided 2 Turn off the DC breaker and use Padlocks if provided Skip the two steps if there are no circuit breakers 3 Switch the AC switch to OFF position 4 Switch the DC switch to OFF position 5 Wait for 10 minutes to ensure the internal capacitors have been completely discharged 6 Measure the AC output cable terminal voltage against the ground and make sure the voltage is OV 7 Disconnect the AC and PE cables referring to 3 3 2 AC and ground connection 8 Disconnect the DC cables referring to 3 3 1 DC connection 9 De install the inverter using reverse of installation steps referring to 3 2 Mechanical installation 99 Chapter 8 Technical Data Model Name CPS SCA23KTL DO US 480 CPS SCA28KTL DO US 480 DC Input Max PV Power 31kW 15 5kW MPPT 38kW 19kW MPPT Nominal DC Input Power 24kW 29kW Max DC Input Voltage 1000Vdc Operating DC Input Voltage Range 300 900Vdc Start up DC Input Voltage Power 330V 300W Number of MPP Trackers 2 MPPT Voltage Range 480 800Vdc 500 800Vdc Max Input Current Imp 50A 25A per MPPT 58A 29A per MPPT Max Short Circuit Current Isc 82A 41A per MPPT 96A 48A per MPPT Number of DC Inputs 8 inputs 4 per MPPT DC Disconnection Type Load rated DC switch
53. n interface by pressing ESC 5 4 1 Operation information When the cursor moves to 1 OP Info in the main screen you should press ENT to select the operation information as shown in Figure 5 8 Check the information by pressing UP and DOWN Return to the previous menu by pressing ESC EDay 23 5kWh 1 OP Info PDayPk 19kW DayT 12 1 h Vv Uab 400 2V Ubc 400 9V Uca 399 7V Freq 60 0Hz y la 13 9A Ib 14 1A Ic 13 1A y Tmod 78 2C Tamb 50 C v Upv1 360 0V lpvt 14 7A Upv2 360 4V Ipv2 14 3A v Sac 17KVA Pac 16 7kW Figure 5 8 Operation information indication PV independent mode 64 Remarks The LCD display is shown as follows when PV parallel mode is selected Upv 360 0V Ipv 14 7A Figure 5 9 Operation information indication PV parallel mode 5 4 2 Alarm As described before if a fault occurs during normal operation of the inverter corresponding fault messages will be indicated in 2 Alarm menu in addition to the sound and light alarms Move the cursor to 2 Alarm and press ENT to check out the specific fault information as shown in Figure 5 10 No 2 Alarm No Alarm EepromErr Yes Protect0010 Figure 5 10 Alarm failure information 5 4 3 History Move the cursor to 3 History in the main interface Press ENT to check the history information as shown in Figure 5 11
54. ntrol when POWER lights up RUN will light up when the inverter detects that the grid connection conditions meet the requirements and power is fed into the grid RUN will blink if the grid is in de rated running state during the period of feeding power into the grid GRID will light up when the grid is normal during the operation of the inverter Otherwise GRID will blink until the grid restores to normal FAULT will blink quickly as a fault except grid fault occurs FAULT will not light out until the fault is eliminated The light will blink slowly when an alarm occurs FAULT remains illuminated when an internal fault occurs The buzzer will give an alarm if a fault involving power grid fault occurs 5 3 Interface types Users can perform the corresponding operations with the 4 function keys according to the indications of the LCD display 1 The LCD interface starts with the company logo once the system is energized as shown in Figure 5 2 61 Figure 5 2 LOGO interface 2 Indication of inverter operation mode Sys Checking gt gt gt gt gt gt Figure 5 3 Inverter system check ongoing Figure 5 4 Inverter system in standby mode Standby gt gt gt gt gt gt PV1 725 V 38 5A 08 12 13 10 05 BT je PV2 27 9 Gr 720 V 223 2 p 31 9A 08 12 13 10 10 a b 277 22 9 183 7 Figure 5 5 Defaul
55. ower generation is not enough to keep the inverter in operation the inverter will enter standby mode When the voltage of PV array changes and becomes stable and higher than the required set value the inverter will attempt to start grid tied power generation again 85 Chapter 7 Maintenance and De installation 7 1 Fault shut down and troubleshooting 7 1 1 LED fault and troubleshooting Please refer to the definition of LED lights in Table 5 1 and troubleshoot according to Table 7 1 Table 7 1 Trouble shooting of LED lights LED fault status Solutions Neither the Power LED nor the 1 Turn off the external AC LCD screen lights up breaker 2 Switch the DC switch to OFF position 3 Check the PV input voltage and polarity The GRID LED is blinking 1 Turn off the external AC breaker 2 Switch the DC switch to OFF position 3 Check whether the grid voltage is normal and whether the cable connection of AC side is correct and secure The RUN LED lights off or FAULT Refer to Table 7 2 for LED lights up troubleshooting 7 1 2 LCD fault and troubleshooting The inverter will be shut down automatically if the PV power generation system fails such as output short circuit grid overvoltage undervoltage grid 86 overfrequency underfrequency high environmental temperature or internal malfunction of the machine The fault information will be displayed on the LCD
56. plus power is supplied to the electricity grid 2 vilde GA m DC power AG power Bidirectional distribution gt distribution electric meter gt AC Grid equipments 7 equipments Figure 2 1 Grid tied PV system 2 Product features High conversion efficiency Advanced 3 level conversion technology Max efficiency 98 6 CEC efficiency 98 Strong grid adaptability 7 grid standards applicable Reactive power adjustable PF value 0 8 Remote Curtailment Flexible communication Supports standard modbus communications to ensure compatibility with 3 party monitoring and control systems Wide DC input voltage range Operating DC Input Voltage Range 300 900Vdc Max DC input voltage 1000V Long service life Uses thin film capacitors to extend inverter s service life 8 2 MPPTs Dual and independent MPPT Maximum Power Point Tracking enable maximum design flexibility and optimize energy harvest over the life of the system Integrated AFCI Integrated AFCI Arc Fault Circuit Interruption feature enables the need to meet advanced local electrical and grid codes This feature is disabled by default but can be enabled if needed in the field Please contact CPS at HOTLINE 855 584 7168 number to get instructions High protection degree NEMA 4 protection degree meets the needs of both indoor and outdoor use Intelligent Inte
57. power The following table lists the fuse type specifications and number under the rated voltage and power range of 8 strings of PV panels Table 3 5 DC Fuse selection Brand 4 Strings 5 strings 6 strings 7 strings 8 strings 23 OSPFO15 T OSPF015 T OSPFO15 T OSPFO15 T OSPFO15 T kW Littelfuse 15A 1000V 15A 1000V 15A 1000V 15A 1000V 15A 1000V 28 OSPFO15 T OSPF015 T OSPFO15 T OSPFO15 T OSPFO15 T Littelfuse kW 15A 1000V 15A 1000V 15A 1000V 15A 1000V 15A 1000V Note 1 The input string size must be the same 33 Note 2 The DC fuse protectors of different fusing capacity should be chosen according to the short circuit current of PV modules The 1000VDC Littelfuse KLKD fuse series are recommended The detailed information is available for customers to find and download from http www littelfuse com 3 DC cable connection To ensure the optimum performance of the inverter please read the following guidelines before DC connection a Confirm the DC configuration referring to Table 3 5 and ensure that the maximum open circuit voltage of the PV modules is lower than 1000 Vdc under any conditions b Confirm that the PV strings for each MPPT of the inverter are of the same type and specification before connection The number orientation and tilt of PV strings may differ for different applications c Configure the external wiring according to the following condi
58. t cables should be correct and the DC Switch should be on OFF position Please refer to 3 3 Electrical installation 4 1 3 Electrical check gt Make sure that the AC circuit breaker is appropriately sized gt Test whether the AC voltage is within the normal operating range gt Make sure the DC open circuit voltage of input strings is less than 1000V 4 2 Commissioning steps Complete the checklist above before commissioning the inverter as follows 1 Turn on the AC circuit breaker 2 Turn on the DC circuit breaker Skip these two steps if there are no circuit breakers 3 Switch the DC Switch to the ON position When the energy supplied by 56 the PV array is sufficient the LCD screen of inverter will light up The inverter will then start up with the message sys checking 4 Set up the grid standard INSTRUCTION Please check with your local electricity supply company before selecting the grid standard If the inverter is operated with a wrong grid standard the electricity supply company may cancel the operation license Putting the inverter into operation before the overall system complies with the national rules and safety regulation of the application is not permitted gt When the inverter completes sys checking LCD shows the screen as Figure 4 1 below Press ENTER to the standard selection interface as shown in Figure 4 2 gt Select the corresponding grid standard and pr
59. t display interface for normal operation 62 VAC KW Kwh GridV OutLim Figure 5 6 Fault indication interface LCD screen will display different mode interfaces based on the operation modes of the inverter There are four operation modes startup system check mode as shown in Figure 5 3 stand by mode as shown in Figure 5 4 normal operation mode as shown in Figure 5 5 the switching time between a and b is 5 seconds and fault mode as shown in Figure 5 6 The default indication interface mainly indicates PV voltage PV current grid voltage instant power daily generated power and time information under normal operation The fault information of the most recent current fault will be indicated on the LCD screen when the inverter is in fault mode 5 4 Menu functions LCD screen displays default indication interface when the inverter is in operation mode Press ESC in this interface to escape the default interface and enter the main operation interface The main operation interface is shown in Figure 5 7 1 OP Info 5 Dispatch 2 Alarm 3 History 4 Setting 63 Figure 5 7 Main menus on the LCD screen The main operation interface of LCD screen has 5 menus i e 1 OP Info 2 Alarm 3 History 4 Setting and 5 Dispatch The users may select options with UP and DOWN and then press ENT to confirm selection The users can return to the default indicatio
60. tely if OFF is selected in any case 2 Five languages i e Chinese French English German and Italian are available in 2 Language menu 3 Key beep and Alarm beep can be set mute unmute in 3 Buzzer menu Key beep and Alarm beep can be chosen by pressing UP and DOWN Shift between Enable and Disable by pressing UP and DOWN if the cursor is on the Key beep Complete the setup by pressing ENT Similarly the Alarm beep can be set up in the same way 4 Set up the system date and time with 4 SysTime menu These parameters are of critical importance and will be used in history information 5 Set the 485 communication parameters with 5 Commun menu 6 There are 5 submenus in the 6OtherCmd menu 1 Arcing check and protection is mainly divided into two parts the Arcing check board is responsible for whether there is Arcing in line and transfer Arcing protection signal to the DSP in the dominating control board The control board DSP is responsible for the control of inverter off the grid after receiving Arcing signal to ensure safety The Arcing board failure will cause arc board err shown on the LCD and it will not connect to the grid until the arc board is OK If there is Arcing fault the LCD displays the fault which can only be cleared manually The inverter ships in a default AFCI disabled mode ARCOption is used to enable disable the ARC function Press ENT
61. tion System leakage current is too high Possible causes 1 Excessive parasitic capacitance on PV module due to environmental factor 2 Grounding is abnormal 3 Internal inverter fault Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Detect whether the electrical connection is abnormal 3 Contact after sales service personnel 7 lsolationErr Definition Insulation impedance of PV positive to ground or PV negative to ground exceeds the specified range Possible causes Air humidity is high 91 Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check insulation of PV system 3 Contact after sales service personnel Definition ARC fault Possible causes Protection actions of ARC board Recommended solutions 8 ARC Protect 1 Use ARCFaultClear to clear the ARC fault Refer to section 5 4 4 2 Check if there is an arc in PV input or the connection of PV cable is not good 2 Contact after sales service personnel Definition Arcboard error Possible causes Poor contact or damage of Arcboard Aber Recommended solutions 1 Check whether the Arcboard is in good condition 2 Use ARCFaultClear to clear the ARC fault Refer to section 5 4 4 3 Contact after sales service personnel 10 IntProtect0010 0620 Definition
62. tions Table 3 6 DC input configuration Rare 1strings Configuration 23kW 28kW PVI INI tt THT ULI 1MPPT ja INI Parallel gt Inverter Mode IN2 Bypass Fuse IN2 1 rrr LLL 34 INI DE 1MPPT ik Ni Parallel y i AR Inverter Mode PV2 cg S Bypass Fuse PV2 Pak M IN2 Current 50A 58A DC cable 2AWG Maximum Fuse NA Rare 2 strings Configuration 23kW 28kW PV1 _ gt IN1 2MPPT PV1 2 IN1 Independent 7 m 1 Inverter Mode 2 Bypass Fuse PV2 PV2 i IN2 z gt 1MPPT PV1 fw PV1 Parallel p 2 Inverter Mode pine c Bypass Fuse Current 25A 29A DC cable 2AWG Maximum Fuse NA Common 4 strings Configuration 23kW 28kW evar 2 IN1 4 2MPPT pvi L a AH INL Independent i J Inverter pva _ 2 rH ind Mode p L POH IN2 1MPPT Parallel Inverter Mode Current 12 5A 14 5
63. urface is scratched or smooth Repair or replace the cables if necessary 7 2 2 Clean the air vent filter The inverter can become hot during normal operation It uses built in cooling fans to provide sufficient air flow to help in heat dissipation Check the air vent regularly to make sure it is not blocked and clean the vent with soft brush or vacuum cleaner if necessary 7 2 3 Replace cooling fans If the internal temperature of the inverter is too high or abnormal noise is heard assuming the air vent is not blocked and is clean it may be necessary to replace the external fans Please refer to Figure 7 1 for replacing the cooling fans 1 Use a No 2 Phillips head screwdriver to take off the 10 screws on the fan tray 6 screws on the upper fan tray and 4 screws on the lower fan tray 2 Disconnect the waterproof cable connector from the cooling fan 3 Use a No 2 Phillips head screwdriver to take off the screws 4 Fix the new cooling fan on the fan tray and fasten the cable on the fan tray with cable ties Torque value 0 8 1N m 5 Install the assembled fans back to the inverter Torque value 1 2N m 94 Q X D Kofi R MEN MME V ACZ AMAR FA MM NM KEEP P GII LLL IL AAAA ARAA zzz SIS zza gt EAI gt CIITA QR zy A A s 95 Figure 7 1 Replace cooling fans 96 7 2 4 Replace the inverter
64. ut sections DC Input 1 and DC Input 2 These two sections can work under Parallel mode or Independent mode see Figure 3 19 Under Parallel mode the two PV input sections share one MPP Tracker Under Independent mode each PV input section works with one MPP Tracker Inverter DC DC Input 1 Input 2 PAR PAR IND IND 5401 je sg a Inverter DG DG Input 1 Input 2 I I I T nl n2 n3 n4 5401 nl n2 n3 n4 Figure 3 19 a Parallel mode Figure 3 19 b Independent mode Table 3 4 DC input power specification Inverter model Max DC input power Rated DC input power of each input section SCA23KTL DO 31kW 15 5kW SCA28KTL DO 38kW 19kW Remarks The standard configuration is Parallel mode If it needs to switch to the Independent mode please take the follow 1 Remove the cover of the wiring box screwdriver to remove the 4 screws on the wiring box and take off the cover see Figure 3 16 a 2 Remove the protection cover see Figure 3 20a 3 Use No 2 Phillips head screwdriver to remove the jumper busbar 30 Use 3mm 0 12in Hex torque value of 1 6N m see Figure 3 20b Set the selector switch on the LCD board see Figure 3 21 to independent mode Reinstall the protection cover see Fi
65. ve the cursor to the menu press ENT and set up the parameters by UP and DOWN INSTRUCTION Move the cursor to the corresponding menu to set up the parameters and the number will flash after pressing ENT Use UP and DOWN to adjust the parameters 69 5 4 5 Power dispatch Move the cursor to 5 Dispatch in the main interface and press ENT to go to the following interface Figure 5 13 ActivePower 100 0 PowerFactor 1 000 5 Dispatch gt Figure 5 13 Active Power and PowerFactor Remote power dispatch The ActivePower and PowerFactor can be adjusted remotely by software 5 4 6 System protection parameters setup Press DOWN and ENT at the same time in the main interface and enter the password UP gt DOWN gt UP gt DOWN to access the system protection parameters setup menu This menu includes 6 submenus 1 SysPara 2 Restart 3 Recover 4 ClrErrRecd and 5 Stdset as shown in Figure 5 14 70 1 GridVProtect 2 GridFProtect 3 ON OFF 4 PowerContr 5 LVRTSet 6 OtherProtect Pls Input Pwd 1 SysPara 2 Restart 3 Recover Are You Sure 4 CirErrRecd 5 StdSet Pwd Error Pls Input Again Initialization Wrong Pwd Restarting Recovering FaultOperated Success
Download Pdf Manuals
Related Search