Installation and Operation Manual

Transcription

1 CPS SCSeriesGrid-tiedPVInverter CPS SCKTL-DO/US-08 Installation and Operation Manual Ver. C0

2 Table of Contents Before You Start... Chapter IMPORTANT SAFETY INSTRUCTIONS... Chapter Overview Inverter for grid-tied PV systems Product features Circuit structure design Appearance description... 7 Chapter Installation Recommendation before installation Mechanical installation Electrical installation DC connection AC and ground connection..... Communication connection... 7 Chapter Operation Start-up Shut-down Operation mode Grid connection and power generation Fault shutdown... 0 Chapter 5 User Interface Description of LCD panel Operation state Interface and menu functions Interface types Main operation interface Operation information Alarm History System setup Power/PF Power Control System protection parameters setup... 6 Chapter 6 Technical Data Chapter 7 Limited Warranty... 69

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4 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. Thanks for choosing this CPS Grid-tied PV Inverter. This PV 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 this manual before contacting your local dealer or supplier. Instructions inside this manual will help you solve most installation and operation difficulties. Please keep this manual on hand for quick reference.

5 Chapter 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: INSTRUCTION indicates important supplementary information or provides skills or tips that can be used to help you solve a problem or save you time.

6 Markings on the product HIGH VOLTAGE: The product works with high voltages. All work on the product must only be performed as described in this document. 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. DANGER: Please disconnect the inverter from AC grid and PV modules before opening the equipment. When the PV array is exposed to light, it supplies DC voltage to this 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. WARNING: All the installation and cable 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.

7 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 any private AC power equipment. CAUTION: CPS SCKTL-DO inverter is approx 6kg ( pounds). Please ensure the mounting is properly installed before hanging the the inverter on the bracket.

8 Chapter Overview. Inverter for grid-tied PV systems CPS SCKTL-DO/US-08 inverter is suitable for use with various commercial rooftop systems and distributed power station systems. Normally, the system mainly consists of PV modules, DC power distribution equipments, PV inverter and AC power distribution equipments (Figure -). 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 surplus power is supplied to the electricity grid. DC power distribution equipments AC power distribution equipments Bidirectional electric meter AC Grid Figure - Grid-tied PV system. Product features The two-mppt design has the benefit of increasing the power generating efficiency of the whole PV system. The inverter has MPPTs, so a separate array can be controlled by an independent Maximum Power Point Tracking (MPPT) control circuit. This means that the two arrays can be installed in different positions and orientations. The transformerless design of inverter with the benefit of small size, light weight, high power density, flexible installation and convenient maintenance provides the best cost performance for the whole PV system. 5

9 . Circuit structure design The basic schematic diagram of CPS SCKTL-DO/US-08 is shown in Figure -. The input DC passes through surge protection circuitry, DC EMI filter, and the boost circuit to achieve maximum power tracking and boost up voltages. The inverter converts the DC energy to -phase AC energy. The high frequency components of AC voltage are removed with a line filter. Then the -phase AC energy is sent through two-stage relays and EMI filter to produce high quality AC power. PV+ PV- DC_Switch EMI Filter DC/DC INV Filter EMI Filter AC_Switch L L L Lightin g surge N Lightin g surge PV+ PV- EMI Filter DC/DC PE Lightin g surge Figure - Schematic diagram of CPS SCKTL-DO/US-08 6

10 . Appearance description Figure - Appearance sketch of CPS SCKTL-DO/US-08 Description of main items of CPS SCKTL-DO/US-08 (See Figure -):. LCD key buttons: operate the functions and change settings of inverter. LCD display: indicates data. LED indicator lights: indicate the status of inverter. Holes for cable entry 5. DC switch: control the DC power on and off 6. AC switch: control the AC power on and off 7. Main housing 8. Wiring box 7

11 Chapter Installation Below is the installation instruction of the inverter. Please read carefully and install the product step-by-step. Before installation, please check that the following items are included in the package: Table - Main items No. Item Q ty Note () CPS SCKTL-DO/US-08 Grid-tied PV inverter () Mounting bracket () Installation and operation manual () Accessory kit contains all necessary accessories The () Accessory kit contains items listed below: Table - Accessories Item Q ty Purpose M8x5 Expansion bolts&nuts 8 pairs for bracket installation OT type terminal for ground cable Pre-insulated end ferrule 0 6 for DC input cables, for AC output cables RJ5 connecters for communication cables Flange M5 nut for grounding wire ( nut for backup use) 8

12 Red wire Black wire for inverter with MPPT working alone for inverter with MPPT working alone INSTRUCTION: The items in the accessory kit table above are for the standard configuration. The accessories may vary if optional parts are purchased.. Recommendation before installation Check that the product environmental specifications (protection degree, operating temperature range, humidity and altitude, etc) meet the requirements of the specific project location; Make sure that the power grid voltage is within normal range; Ensure that the local electricity supply authority has granted permission to connect to the grid; Installation personnel must be qualified electricians or people who have received professional training; Sufficient space is provided to allow the inverter cooling system to operate normally; Install the inverter away from flammable and explosive substances; Avoid installing the inverter in locations that exceed the temperature limits specified in the inverter data sheet to limit undesirable power loss; Do not install the inverter near the electromagnetic source which can compromise the normal operation of electronic equipment; 9

13 .7in 060mm. Mechanical installation () Dimensions The dimensions of CPS SCKTL-DO/US-08 inverter are shown in Figure -..in 5mm 8.6in 5mm Figure - Dimensions of CPS SCKTL-DO/US-08 () Installation method 0

14 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. (b) If the inverter cannot be mounted vertically, it is allowed to be tilted backward by Max. 5. (c) Do NOT mount the inverter forwards. (d) Do NOT mount the inverter in a horizontal position. (e) Do NOT mount the inverter upside down. Figure - Mounting the inverter properly

15 NOTICE: When the inverter is mounted backward by 5 outdoor, shield cover is required to be installed above the inverter to avoid direct sunlight. () Space required for inverter mounting on the wall (see Figure -) The distances between the inverter and the surrounding objects should meet the following conditions: two sides from the walls 00mm (.8in.); top distance 00mm (.8in.); bottom distance 600mm (.6in.); the minimum spacing between two inverters in parallel 600mm (.8in.). Figure - Inverter mounting dimensions () Secure the bracket with bolts through the mounting holes and install

16 the inverter: (a) Mark the 6 bolt holes for mounting the bracket as shown in Figure -; Figure - Bracket mounting dimensions (b) Drill holes at the marked positions with a diameter of 0.in. drill and put the 6 expansion bolts into the holes;

17 (c) Take the mounting bracket out of the package and secure the bracket on the wall with the 6 nuts in pair as shown in Figure -5; Figure -5 Positions of bolt holes on the bracket (d) Screw off the bolts and remove the two panels on both sides of the inverter as shown in Figure -6; Figure -6 Removal of panels before mounting inverter

18 (e) Two people grab at the position on each side (see Figure -7a), lift up the inverter and then hang it on the bracket (see Figure -7b~c). Make sure the inverter is securely fixed on the bracket; Hand Grab Figure -7a Mounting inverter on the bracket 5

19 Figure -7b Mounting inverter on the bracket Figure -7c Mounting inverter on the bracket (f) Put the two removed panels back and secure them with M* bolts on each side, as shown in Figure -8. 6

20 Figure -8 Securing panels on both sides. Electrical installation Inverter cable terminals of CPS SCKTL-DO/US-08 are shown in Figure -9: Figure -9 Inverter cable terminals Knockout holes for &.5inch conduit of DC inputs knockout hole for &.5inch conduit of AC output and ground cables Knockout hole for 0.5 & 0.75inch conduit of communication cables.. DC connection () To ensure the optimal performance of the inverter, please read the following guidelines before DC connection: (a) Make sure that the maximum open circuit voltage of the PV modules is lower than 600Vdc under any conditions; (b) Confirm that the PV modules for each MPPT of the inverter are of the same types and specifications before connection. The number, orientation, and tilt of PV modules may differ for different application. (c) Configure the external wiring according to the following conditions: 7

21 8 Rare Configuration strings MPPT- Independent Mode Bypass Fuse Inverter IN+ IN- IN+ IN- PV+ PV+ PV- PV- MPPT- Parallel Mode Bypass Fuse Inverter IN+ IN- IN+ IN- PV+ PV+ PV- PV- Current 6A DC cable 0~6AWG Fuse NA Common Configuration strings MPPT- Independent Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN-

22 9 MPPT- Parallel Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN- Current A DC cable 6~0AWG Common Configuration 5 strings MPPT- Independent Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN- MPPT- Parallel Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN- Current 0.A DC cable 6~0AWG Common Configuration 6 strings

23 0 MPPT- Independent Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN- MPPT- Parallel Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN- Current 8.7A DC cable 8~0AWG Common Configuration 7 strings MPPT- Independent Mode PV+ PV- PV+ PV- Inverter IN+ IN- IN+ IN-

24 PV+ IN+ MPPT- Parallel Mode PV- PV+ IN- IN+ Inverter PV- IN- Current 7.A DC cable 8~0AWG Common Configuration 8 strings PV+ IN+ MPPT- PV- IN- Independent Mode PV+ IN+ Inverter PV- IN- PV+ IN+ MPPT- PV- IN- Parallel Mode PV+ IN+ Inverter PV- IN- Current 6.5A DC cable 8~0AWG Note : The temperature rating of the input wirings should be no less than 90 (9 ).

25 Note : The recommended fuse types are configured according to the condition that the input strings are the same. (d) CPS SCKTL-DO/US-08 inverter is equipped with standard A DC fuses. Customers must verify that the appropriate fuses are used depending on the actual configuration of PV strings. ) Each independent string of DC input from the PV strings needs fuse protection. ) The rated voltage of fuse should be higher than the Max. Voc of each PV string. ) In order to keep the output power normal, the rated current of fuse is generally larger than the.56 Max. output current from the PV strings. ) 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 power. 5) The following table lists the fuse type, specifications and number under the rated voltage and power range of 8 strings of PV panels. Table - DC Fuse selection kw Brand Strings 5 strings 6 strings 7 strings 8 strings KLKD 5 KLKD 0 KLKD 5 KLKD KLKD Littelfuse 5A/600V 0A/600V 5A/600V A/600V A/600V Note : The input string size must be the same. Note : The DC fuse protectors of different fusing capacity should be chosen according to the short circuit current of PV modules. The 600VDC Littelfuse KLKD fuse series are recommended. The detailed information is available for customers to find and download from

26 (e) Strip the skin 0. inch off the cables as shown in Figure -0: Figure -0 Wire stripping of DC input (f) Crimp the terminal as shown in Figure -: Figure - Terminal crimping of DC input (g) The order of cable connection from left to right is PV+, PV-, PV+, PV-. Connect the PV- and PV- to the corresponding fuse socket of the negative pole and connect the PV+ and PV+ to the corresponding fuse socket of the positive pole with the torque value of.n-m (0.6Lb-In.). Figure - Wire connection of DC input (h) For the inverter with MPPT working alone, connect J (IN+) with J (IN+) wire socket (in the Wiring box) through the red wire in the accessory kit;

27 Connect J (IN-) with J (IN-) wire socket through the black wire in the accessory kit, as shown in Figure -: Figure - Wire connection in the Wiring box ( MPPT working alone).. AC and ground connection The following describes how to connect the AC output and grounding cables between the inverter and the public power grid: () Use the recommended cables: L (Line ), L (Line ), L (Line ), Neutral and Gnd (Equipment grounding conductor):8~0awg copper cored soft cables L L L Neutral Gnd Wire 8~0AWG diameter Bolts M screw M5 nut Torque.9N-M (0.5Lb-In.) value () Cable making for AC output: (a) Strip the skin 0. inch off the cables as shown in Figure -:

28 Figure - Diagram for wire stripping of AC output (c) Crimp the terminal as shown in Figure -5: Figure -5 Diagram for terminal crimping of AC output () Cable making for grounding: (a) The Gnd cable (Equipment grounding conductor) is recommended to be green or green with continuous yellow stripes, per National Electrical Code. Strip the skin 0. inch off the cables as shown in Figure -6: Figure -6 Diagram for wire stripping of grounding conductor (b) Crimp the terminal with the ring terminal in the accessory kit as shown in Figure -7(a) or (b): Figure -7(a) Diagram for terminal crimping of grounding conductor 5

29 Figure -7(b) Diagram for terminal crimping of grounding conductor () Connection of AC output and ground cables (a) Connect the L, L, L and Neutral AC output cables to the corresponding terminals of the socket on the PCB board. (b) Connect the Gnd cable with a M5 nut at the marked place on the lower right side of the Wiring box, as shown in Figure -8(a). The Gnd cable can also be connected to the copper stick as shown in Figure -8(b). Figure -8(a) Diagram of AC output and ground cable connection 6

30 Figure -8(b) Diagram of AC output and ground cable connection () 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 pole or pole AC circuit breaker should be selected as per the following specifications: Table -8 Specification of AC breaker selection Inverter AC breaker rated current(a) CPS SCAKTL-DO/US Communication connection ) Standard RS85 communication There are two RS85 signal ports on the inverter. Shielded cables should be used for communication cables with the maximum length of 80 feet. () The communication of one single local inverter is to connect the RS85 communication bus cable through the RS85- or RS85- port of the inverter directly. Wiring requirement of RS85-/ is shown in Table -9: 7

31 Table - RS85-/ wiring requirement No. Color Function White orange 85+ Orange N.C. White green 85- Blue N.C. 5 White blue N.C. 6 Green N.C. 7 White brown COM 8 Brown N.C. () The wires are labeled ~8 from left to right, as shown in Figure -9: Figure -9 Diagram of RS85-/ wiring () RS85 network connection: When the inverters are monitored via the RS85 communication, the unique RS85 address for each inverter can be set through the LCD interface. Up to inverters can be connected together in the RS85 communication network. The Daisy-chain topology is recommended for the RS85 network connection, as shown in Figure -0. Other communication topologies, such as the star networks, are not recommended. 8

32 N Datalogger Figure -0 RS85 connection between inverters and datalogger () A terminal resistance of 0 ohms connected between Pin and Pin of RS85-/ of the last inverter in the multiple inverters string and data logger as shown in Figure -0 is recommended. (5) The connection inside the Wiring box of the inverter after the first one is shown in Figure -: 9

33 Figure - Diagram of communication wiring ) Optional communication card connection The inverter also supports optional communication methods: Ethernet and ZigBee. Each communication card supports firmware upgrade by USB disk. INSTRUCTION: Please remove the communication cables in Figure - before installing the optional communication card. a.) Ethernet communication. Install the communication card and fasten the screws. (see Figure -) NOTICE: Please install the communication card in the wiring box as per the requirement of ESD to avoid damaging the card. 0

34 Figure - Install the Ethernet card. Crimp the communication cable, as shown below: Figure - Diagram of Ethernet wiring Table - Ethernet wiring requirement No. Color White orange Orange White green Blue 5 White blue

35 6 Green 7 White brown 8 Brown. Connect the communication cables as figure -: Figure - Cable connection of Ethernet communication The Ethernet card is equipped with an Ethernet port for TCP/IP communication. The factory default IP address is You may check the IP address by the finder.exe software. Use the Web Page function embedded in the Ethernet card to input the effective IP address in the IE address bar, such as // Then the user can set up the internet parameters and check the real-time information of inverter, etc.

36 b.) Zigbee communication Figure -5 Communication port on the Ethernet card. Install the Zigbee card in the wiring box, and fasten the screws, as follows: Figure -6 Install the Zigbee card NOTICE: Please install the communication card in the wiring box as per the requirement of ESD to avoid damaging the card.. Install and fasten the cable gland from the inside of the wiring box, as follows:

37 Figure -7 Fix the cable gland. Fix the antenna on the bottom of the wiring box. Fasten the two screws and put the antenna cable through the cable gland. (see Figure -8). Figure -8 Installation of Zigbee antenna

38 Figure -9 ZigbeeCard. The Zigbee card supports wireless network communication. The communication frequency is optional from.05ghz.80ghz and the visible communication distance reaches up to 656 feet. The Zigbee communication is an excellent choice for the onsite where the communication cables are inconvenient to pave. The factory default configuration of ZigBeeCard is transit route mode. The communication frequency is.80ghz. Network ID is 0xFF. The transmit mode is Master-slave, and the communication baud rate is 9600pbs. 5. Connect the communication cables as follows: 5

39 Figure -0 Cable connection of Zigbee communication 6. Plug the unused holes on the cable gland with waterproof stick, and fasten the cap of the cable gland. Figure - Plug waterproof stick into the unused hole For more information about CPS monitoring solutions, please visit or contact our after-sales service center. 6

40 Chapter Operation. Start-up Manual start-up: Manual start-up is required after initial installation or manual (fault) shut-down. Move the cursor from the main operation interface to Setting. Press ENT and input the password (PAGEUP -> RIGHT -> PAGEDOWN -> LEFT) to access the submenu 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 stands by. Automatic start-up: The inverter will start up automatically when the output voltage and power of PV modules meet the set point, AC power grid is normal, and the ambient temperature is within allowable operating range.. Shut-down Manual shutdown: Normally, manual shutdown is not required. It can be shut down manually if repair or maintenance is required. Move the cursor from the main operation interface to Setting. Press ENT and input the password (PAGEUP -> RIGHT -> PAGEDOWN -> LEFT) to access the submenu ON/OFF. Move the cursor to OFF and press ENT, and then the inverter will be shut down. Automatic shutdown: The inverter will shut down automatically when the output voltage and power of PV modules are lower than the set point, or AC power grid fails; or the ambient temperature exceeds the normal range.. Operation mode There are operation modes. The following are corresponding indications for each mode. () System check mode for start up, as shown in Figure -: 7

41 Sys.Checking >>>>>> Figure - 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 the inverter. () Normal operation mode: Default indication interface for normal operation of CPS SCKTL-DO/US-08 is shown in Figure - (a) and - (b). The switching time between (a) and (b) is 5 seconds. (a) (b) Figure - 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. () Standby mode, as shown in Figure -: The inverter will turn into 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 point. 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 malfunction occurs. 8

42 Standby >>>>>> Figure - Inverter system in standby mode () Fault mode, as shown in Figure -: The inverter will disconnect from the power grid and turn into fault mode when the inverter or power grid fails. Check the specific cause through Troubleshooting table (Table -) in terms of the fault message displayed on the LCD and eliminate the fault according to the instructions. SPICommErr Figure - Fault indication interface WARNING: All the installation and cable 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.. Grid connection and power generation The grid connection and power generation process of CPS SCKTL-DO/US-08 is automatic. It will check constantly whether AC power grid meets the grid connection and power generation conditions. At the same 9

43 time, it will also check whether the DC input of PV modules is sufficient. The inverter will turn into normal operation mode when both of AC and DC conditions are fulfilled. The inverter will disconnect from the power grid and switch to standby mode when the sunlight is weak and power generation is small. The inverter will try to reconnect to the power grid and generate power again when the voltage of PV modules is stable and higher than the set point..5 Fault shutdown The inverter will be shut down automatically when the PV power generation system fails, such as output short circuit, grid overvoltage / undervoltage, grid overfrequency / underfrequency, high ambient temperature or internal malfunction of the machine. The causes of fault can be identified based on the faults listed in Table -. Proper treatment is recommended before contacting after-sales service. There are mainly types of faults: alarm, protection and hardware fault. 0

44 Table - Troubleshooting Table Definition: Prompt detection of abnormal temperature. TempSensorErr Possible causes:. Temperature Sensor socket connecter has poor contact;. Temperature Sensor is damaged; Recommended solutions:. Observe temperature display;. Switch off -phase working power supply and then reboot the system;. Contact after-sales service personnel Alarm Definition: Communication inside inverter fails. SPICommErr Possible causes:. Communication circuits inside inverter are loose;. LCD software problem;. Inverter software problem; Recommended solutions:. Observe for 5 minutes and see whether the alarm will be eliminated automatically;. Turn off -phase working power supply and then reboot the system;. Contact our after-sales service center.

45 . IntFanErr. ExtFanErr 5. EepromErr Definition: Fan (invisible from outside) inside inverter is working abnormally Possible causes:. Fan service life has expired;. Fan socket connecter has poor contact. Recommended solutions:. Observe for 5 minutes and see whether the alarm will be eliminated automatically;. Switch off -phase work power supply and then reboot the system;. Contact after-sales service personnel Definition: The visible fan from outside view is working abnormally Possible causes:. Fan is blocked;. Fan service life has expired;. Fan socket connecter has poor contact. Recommended solutions:. Observe for 5 minutes and see whether the alarm will be eliminated automatically;. Check for foreign matters on fan blades;. Switch off -phase work power supply and then reboot the system;. Contact after-sales service personnel Definition: Internal alarm

46 Protect. TempOver. GridV.OutLim Possible causes: Internal memory has a certain problem Recommended solutions:. Observe for 5 minutes and see whether the alarm will be eliminated automatically;. Contact after-sales service personnel Definition: Ambient temperature or temperature inside inverter is too high Possible causes:. Ambient temperature outside the inverter is too high;. Fan is blocked;. Cooling is affected because of incorrect installation. Recommended solutions:. Confirm that external ambient temperature is within the specified range of operating temperature;. Check whether radiation air inlet is blocked;. Whether radiation fan is blocked;. Check whether the location of installation is appropriate or not; 5. Observe for 0 minutes and see whether the alarm will be eliminated automatically; 6. Contact after-sales service personnel Definition: Grid voltage exceeds the specified range,

47 . GridF.OutLim Possible causes:. Grid voltage is abnormal; Power grid breaks down. Cable connection between the inverter and the grid is poor; Recommended solutions:. Observe for 0 minutes and see whether the alarm will be eliminated automatically;. Check whether the grid voltage is within the specified range;. Check whether the cable between the inverter and power grid is disconnected or has abnormalities;. Contact after-sales service personnel Definition: Grid voltage frequency is abnormal, or power grid is not detected Possible causes:. Grid frequency has abnormalities;. Cable connection between the inverter and the grid is poor; Recommended solutions:. Observe for 0 minutes and see whether the alarm will be eliminated automatically;. Check whether the grid frequency is within the specified range;. Check whether the cable between the inverter and power grid is disconnected or has

48 abnormalities;. Contact after-sales service personnel Definition: PV voltage exceeds the specified value Possible causes: PV over-voltage Recommended solutions:. PV(). Observe for 0 minutes and see whether the VoltOver* alarm will be eliminated automatically;. Check whether PV voltage exceeds the specified range;. Turn off the PV input switch, wait for 5 minutes, and then turn on the switch again;. Contact after-sales service personnel Definition: PV module is connected inversely Possible causes: PV positive pole and negative pole are 5. PV() connected inversely; Reverse* Recommended solutions:. Check whether positive pole and negative pole are connected inversely;. Contact after-sales service personnel Definition: System leakage current is too high 6. GFCI.Err Possible causes:. Excessive parasitic capacitance on PV module due to environmental factor; 5

49 . Grounding is abnormal;. Fault inside the inverter Recommended solutions:. Observe for 0 minutes and see whether the alarm will be eliminated automatically;.. Detect whether the electrical connection is abnormal. Contact after-sales service personnel Definition: Insulation impedance of PV positive to ground or PV negative to ground exceeds the specified range Possible causes: 7. IsolationErr Air humidity is high Recommended solutions:. Observe for 0 minutes and see whether the alarm will be eliminated automatically;. Check insulation of PV system;. Contact after-sales service personnel Definition: Internal protection of the inverter Possible causes: 8. Protection procedure occurs inside the inverter IntProtect000-0 Recommended solutions: 80. Observe for 0 minutes and see whether the alarm will be eliminated automatically;. Contact after-sales service personnel 9. ARC Protect Definition: 6

50 The electric arc occurs in the circuit. Fault Possible causes:. The electric arc occurs on the DC side;. Fault with the ARC board Recommended solutions:. Check whether the circuit is in good condition, including the cable aging and animal gnawing; If no problem is found, restart the inverter to clear the ARC Protect alarm.. Contact after-sales service personnel Definition: Self-checking of the ARC board fails Possible causes:. Communication error in the connection between the ARC board and the inverter. Abnormal with the ARC board Recommended solutions: 0. ARC Board Err. Check whether the communication cable of the ARC board is normal. Turn off the power supply and restart the inverter to see whether the alarm will be eliminated automatically;. Contact after-sales service personnel Note: The ARC Board Error doesn t interfere with the normal operation of the inverter. Definition: Internal fault of the inverter IntFault Possible causes: Fault occurs inside the inverter 7

51 Recommended solutions:. 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;. Contact after-sales service personnel INSTRUCTION: *The actual display of PV.VoltOver is PVVoltOver or PVVoltOver. *The actual display of PV.Reverse is PVReverse or PVReverse. 8

52 Chapter 5 User Interface 5. Description of LCD panel The CPS SCKTL-DO/US-08 LCD panel mainly consists of LCD screen, LED indicator lights, buzzer and 6 keys, as shown in Figure 5-. Interpretation for the indicator lights is shown in Table 5- and function of the keys is shown in Table 5-. Table 5- LED Indication LED light Name Status Indication POWER Working power light Light on Light off Energized (control panel starts to work) Power supply not working Grid-tied Light on In grid-tied power generation state RUN operation indication Flash Derated running status (light up 0.5s, light off.6s) light Light In other operation status or power off supply not working GRID Grid status indication light Light on Flash Light off Grid is normal Grid fault (light up 0.5s, light off.6s) Power supply not working FAULT Fault status indication Light on Slow Indicates a Fault Indicates Alarm (light up 0.5s, light off light flash s) 9

53 Fast flash Light off Protective action (light up 0.5s, light off 0.5s) No fault or power supply not working Table 5- Definitions of the keys Key Description Definition of function Escape key Back/end/mute Enter key Confirm entering the menu/confirm set point Up Page up in selection menu Down Page down in selection menu Left - when setting parameters Right + when setting parameters 5. Operation state Table 5- 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 control 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 derated 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 50

54 inverter. Otherwise, GRID will blink until the grid restores to normal. FAULT will blink quickly as a fault (except grid abnormality) occurs. FAULT will not light off until the fault is eliminated. The light will blink slowly when an alarm occurs. FAULT keeps being lighted up when an internal fault occurs. The buzzer will give alarms if a fault (involving power grid abnormality) occurs. 5. Interface and menu functions Users can perform the corresponding operations with the 6 function keys according to the indications of the LCD display. 5.. Interface types () The LCD interface starts with the company logo once the system is energized, as shown in Figure 5-. Figure 5- LOGO interface () Indication of inverter operation mode: Sys.Checking >>>>>> 5

55 Figure 5- Inverter system check ongoing Standby >>>>>> Figure 5- Inverter system in standby mode (a) Figure 5-5 Default display interface for normal operation (b) SPICommErr 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-), stand-by mode (as shown in Figure 5-), 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, 5

56 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.. Main operation interface 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. Measurements Alarm History Setting 5 Power/PF 6 Power Control Figure 5-7 Contents indicated on the main operation interface The main operation interface of LCD screen has 6 menus, i.e. Measurements, Alarm, History, Settings, 5 Power/PF and 6 Power Control. The users may select options with PAGEUP and PAGEDOWN, and then press ENT to confirm selection. The users can return to the default indication interface by pressing ESC. 5.. Operation information When the cursor moves to Measurements in the main interface, you should press ENT to select the operation information as shown in Figure 5-8. Check the information by pressing PAGEUP and PAGEDOWN. Return to the previous menu by pressing ESC. 5

57 Measurements Yield MPac Pac RunT.5kWh.kW.8kW. h Pdc.KW Uab 08.0V Ubc 08.9V Uca 08.5V Freq 60.0Hz Ia 8.A Ib 8.A Ic 8.A Tmod 78.C Tamb 50 C Upv 8.0V Ipv 8.8A Upv 58.0V Ipv 0.0A 5.. Alarm Figure 5-8 Operation information indication As described before, when faults occur during the normal operation of the inverter, corresponding fault message will be indicated in Alarm menu besides the sound and light alarms. Move the cursor to Alarm and press ENT to check out the specific fault information, as shown in Figure

58 Alarm No NoError Yes EepromErr Protect000 Figure 5-9 Alarm / failure information 5..5 History Move the cursor to History in the main interface. Press ENT to check the history information, as shown in Figure 5-0. There are submenus in History : ErrHist, Recent Data, Version and Etot. () UP to 00 pieces of latest fault messages can be recorded and found in ErrHist menu. () The latest days operation history data is available to be found in Recent Data menu. All variable names in the data comply with the content in Measurements menu of the main interface. The users can select the Recent Data menu and input the retraceable days (For example, the input number is. If the current date is December 5th, the LCD will indicate the operation information of days before that date which is November th). () Software version, hardware version and serial number of the product are listed in Version menu. () Cumulative generated power since the first day the inverter began working is available to be found in Etot menu. 55

59 No NoError Yes.St :50 SPI Error.Ed :59 SPI Error History ErrHist Recent Data Version Etot Pls input date ß /5 RunT Yield MPac 7.0 h.5kwh 0.0KW IEE57 SN 8000 DSPVer. 0.0 LCDVer. 0.0 TotalTag (KWh) 5.5 Figure 5-0 History menu and submenu 5..6 System setup Move the cursor to Setting in the main menu, and press ENT to input the password (PAGEUP -> RIGHT -> PAGEDOWN -> LEFT). Then you can access the menu to set up the parameters. There are 7 submenus in Setting : Power ON/OFF, Language, Sounds, Systime, 5 Commun., 6 MPPT Scan and 7 ARC Setup. () The inverter can be started and shut down with 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 are not met even ON is selected. 56

60 The inverter will be shut down immediately if OFF is selected in any cases. () Two languages, i.e. English and Chinese are available in Language menu. () Key beep and Alarm beep can be set mute/unmute in Sounds menu. Key beep and Alarm beep can be chosen by pressing PAGEUP and PAGEDOWN. Shift between Enable and Disable by pressing Left and Right if the cursor is on the Key beep. Complete the setup by pressing ENT. Similarly, the Alarm beep can be set up as well. () Set up the system date and time with SysTime menu (These parameters are of critical importance and will be used in history information). (5) Set the 85 communication parameters with 5 Commun. menu. (6) 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 00V. 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. The 6 MPPTScan menu has three submenus.. The first submenu is used to enable/disable the function of MPPT scan by pressing LEFT or RIGHT. Press ENT to confirm the selection. When the MPPT scan is enabled, the inverter will scan the MPPT automatically according to the scheduled cycle.. Cycle(min) is the second submenu used to set the cycle time of MPPT scan. Move the cursor to the submenu, press ENT, and use LEFT and RIGHT to set the cycle time. The range is (0, 50), and the unit is minute. Press ENT to confirm the selection, or press ESC to get back to the previous menu.. Manual is the third submenu used to enable the MPPT scan manually. Move the cursor to the submenu, press ENT to start MPPT scanning. Note: The function is only effective when the MPPTScan is enabled. 57

61 (7) 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. 7 ARC Setup menu has two submenus, ie. ARC Option and ARC Clear.. ARC Option is used to enable/disable the ARC function.. ARC Clear is used to clear the ARC fault protection. When ARC Protect occurs, the system cannot clear the fault automatically. Please use ClearErr to clear the fault manually. Note: The warning Arc board Err cannot be cleared by ClearErr. If the Arc board Err occurs, the fault system will continuously detect the status of Arc board and won t clear the fault until the Arc board works normally. 58

62 ON OFF ON Setting Power ON/OFF Language Sounds SysTime 5 Commun 6 MPPTScan 7 Arc Setup 中文 English KeyBeep Enabled AlarmBeep Disabled 009 / / 5 : ARC Operation Enable ARC Clear CleraErr < Enable > Cycle(min) 60 Manual Address BaudRate Figure 5- System setup menu and submenu 5..7 Power/PF Move the cursor to 5 Power/PF in the main interface. Press ENT to access and check the parameters of ActivePower and PowerFactor, as shown in Figure 5-. The user can set the parameters of the two options through LCD operations as well as remote control by monitoring software. 59

63 Local Command ActivePower(%) 00.0 PowerFactor.000 Dispatch Command 5..8 Power Control Figure 5- Options of Power/PF Press ENT to access the Power Control menu, as follows: ActivePower 00% Reactive Mode PF(P) Figure 5- Power control menu The active power parameters are adjustable from 0% to 00.0% in the ActivePower (%) menu. You can select the specific reactive mode in the ReactiveMode menu. The ReactiveMode menu has 6 submenus (Figure 5-), including None, Dispatch, Q Set, PF Set, 5 PF(P) Set and 6 Q(U) Set. 60

64 None Dispatch Q Set PF Set Figure 5- Submenus of ReactiveMode. None: No mode/disable reactive mode. Dispatch: Remote power dispatch mode Note: When the dispatch mode is selected, the reactive parameters of the inverter will change according to the remote change order, including ActivePower, PF and Q values. ActivePower(%) 00.0 ReactiveMode None None Dispatch Q Set PF Set Figure 5-5 Enable the dispatch function. Q Set: Set the Q mode Note: Change the reactive power by adjusting the Q value (reactive compensation). PF Set: Set the PF mode Note: Change the reactive power by adjusting the PowerFactor 5..9 System protection parameters setup By pressing PAGEDOWN and ENT at the same time in the main interface 6

65 and entering the password (PAGEUP -> PAGEDOWN -> RIGHT -> LEFT), the system parameter setup menu is accessed. This menu includes submenus: Syspara, Restart, Recover and ClrErrRecd, as shown in Figure 5-6. () Set up the system protection parameters in Syspara menu. The specification of protection parameters is shown in Table 5-. Table 5- Protection Parameters Table No. LCD indication Description Setup range (lower limit, default & upper limit). V.MaxI (V) Class I Max. grid voltage {.0, 8.8, 9.0}. VmaxTripTI (S) Class I Max. trip time {0.08,.00, }. V.MinI (V) Class I Min. grid voltage {0.0, 8, 87.0}. VminTripTI (S) Class I Min. grid voltage trip time {0.08,.00, } 5. V.MaxII (V) Class II Max. grid voltage {0, 9.6, 85.0} 6. VmaxTripII (S) Class II Max. grid voltage trip time {0.08, 0.6, } 7. V.MinII (V) Class II Min. grid voltage {00.0, 0, 8.0} 8. VminTripTII (S) 9. F.MaxI (Hz) 0. FmaxTripTI (S). F.MinI (Hz) Class II Min. grid voltage trip time Class I Max. grid frequency Class I Max. grid frequency trip time Class I Min. grid frequency 6 {0.08, 0.6, } {60.00, 60.5, 6.00} {0.08, 0.6, } {57.00, 59., 60.00}

66 . FminTripTI (S). V.MaxRecover. V.MinRecover Class I Min. grid frequency trip time Max. grid voltage recover value Min. grid voltage recover value {0.08, 0.6, } {08.0, 5, 9.0} {0.0, 86, 08.0} 5. V.RecoverT (S) Grid voltage recover time {0.08, 00, } 6. F.MaxRecover 7. F.MinRecover 8. F.RecoverT Max. grid frequency recover value Min. grid frequency recover value Grid frequency recover time {50.00, 60., 6.00} {58.00, 59., 60.00} {0.08, 00, } 9. PVStartVol (V) PV startup voltage {50.0, 95, 0.0} 0. SoftStep (KW/S) Soft step {0., 0., } () Restart menu. If an internal fault shutdown happens, a severe fault has occurred inside the inverter. The user may perform a force restart once in this menu if the user needs to restart the inverter. INSTRUCTION: The Restart function is effective only when the fault IntFault 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. () Recover menu, the manufacturer s parameter default value can be 6

67 restored when the inverter is not in operation mode. Otherwise, a FaultOperated will be prompted. () In ClrErrRecd menu, history information of the faults can be cleared. A confirmation is required to clear the records. GridV.Max(V) 08 GridVmaxTripT(S) GridF.Max(Hz) 60. FmaxTripTI(S) 0.0 Are You sure? Pls Input Pwd **** SysPara. Restart Recover ClrErrRecd Restarting.. Wrong Pwd Pwd Error Pls Input Again **** Initialization? If yes Success! If no Restoring.. FaultOperated Failure! If yes Success! ClearErrors? FaultOperated If no Failure! Success! Figure 5-6 System parameter setup 6

68 Chapter 6 Technical Data Model Name CPS SCKTL-DO/US-08 DC Input Max. PV Power 9kW Nominal DC Input Power.6kW Max. DC Input Voltage 600Vdc Operating DC Input Voltage Range Vdc Start-up DC Input Voltage / Power 00V / 00W Nominal DC Input Voltage 00Vdc Number of MPP Trackers MPPT Voltage Range 00-50Vdc Max. Input Current (Imp) 50A (5A per MPPT) Max. short circuit current limit per 5A MPPT Number of DC Inputs and Fuses 8 fused conductors ( per MPPT) DC Disconnection Type Load rated DC switch AC Output Rated AC Output Power kw Max. AC Output Power kw Rated Output Voltage 08Vac Output Voltage Range 8-8Vac Grid Connection Type Φ/ N / PE Max AC Output Current 9A Rated Output Frequency 60Hz Output Frequency Range 57-6Hz Exceeding the rated voltage shown in Max. DC Input Voltage may cause permanent damage to the equipment. 65

69 Power Factor >0.99 (±0.8 adjustable) Current THD <% AC Disconnection Type Load rated AC switch System Topology Transformerless Max. Efficiency 96.7% CEC Efficiency 96.0% Stand-by / Night Consumption <0W / <W Environment Protection Degree NEMA Cooling Variable speed cooling fans - F to +0 F / - 5 C to +60 C Operating Temperature Range (derating from + F / +50 C) Operating Humidity 0-95%, non-condensing 656ft / 000m (derating from 9ft / Operating Altitude 500m) Audible Noise <55db Display and Communication Display LCD + LED Communication RS85 Mechanical Data Dimensions (WxHxD).x.7x8.5in / 5x060x5mm Weight lbs / 6kg Safety UL7:00, CSA-C. Safety and EMC Standard NO.07.-0, IEEE57; FCC PART5 Grid Standard IEEE57: 00, IEEE57.:

70 Note : The output power of CPS SCKTL-DO/US-08 inverter de-rates when the DC voltage of is lower than 00V. (See Figure 6-) Po/Pn 00% 80% 60% 0% 0% PV Voltage (V) Figure 6- DC voltage de-rating curve Note : The output power of CPS SCKTL-DO/US-08 inverter de-rates when the environmental temperature is higher than (50 ). (See Figure 6-) Po/Pn 00% 80% 60% 0% 0% 0 (50 ) (60 ) Tamb Figure 6- Environmental temperature de-rating curve Note : When the altitude is higher than 656ft (000m), the power of CPS 67

71 SCKTL-DO/US-08 inverter needs derating. (see Figure 6-) Po/Pn 00% 70% 656ft (000m) ft (000m) Figure 6- Derating curve with high altitude 68

72 Chapter 7 Limited Warranty The warranty policy of this product is specified in the contract; 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. 69

73 CHINT POWER SYSTEMS AMERICA CO., LTD. Address: 700 International Parkway Suite 0 Richardson TX 7508 Web: americasales@chintpower.com Service Hotline: SHANGHAI CHINT POWER SYSTEMS CO., LTD. All rights reserved. Specifications and designs included in this manual are subject to change without notice. CHINT POWER 0/05-MKT PN: C0