Delta RPI-M8 Manual
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Delta RPI-M8 Manual

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  • Page 2: Table Of Contents

    Contents Section Description Page General Information ................6 1.1 About this Manual ................6 1.2 Safety Symbol & Instruction ............6 1.3 Validity .................... 6 1.4 Product Description ............... 7 1.5 Features ..................7 1.6 Application& Usage ............... 7 1.7 Additional Information ..............8 Installation and Wiring ................
  • Page 3 6.1.2 Power vs. Frequency ............26 6.2 Reactive Power Control ............... 27 6.2.1 Fixed Active Factor cosφ ............ 27 6.2.2 Active Factor cosφ(P) ............28 6.2.3 Fixed Reactive Power ............28 6.2.4 Reactive Power / Voltage Characteristic Q(U) ....28 6.3 Fault Ride Through (FRT) ............
  • Page 4 Figure 2-3 The identification label ..............10 Figure 3-1 Inverter exterior objects ............... 10 Figure 3-2 Dimension of RPI-M8/ M10/ M12/ M15A/ M20A ......11 Figure 3-3 Dimension of RPI-M15/ M20/ M30 ..........11 Figure 3-4 Input/Output interfaces of M8/ M10/ M12/ M15A/ M20A ....12 Figure 3-5 Input/Output interfaces of M15/ M20/ M30 ........
  • Page 5 Figure 7-7 Energy log flow chart ..............34 Figure 7-8 Event log flow chart ..............34 Figure 7-9 Operation data flow chart ............. 35 Figure 7-10 Inverter information page ............35 Figure 7-11 Setting page ................36 Figure 7-12 Personal setting page ..............36 Figure 7-13 Coefficient setting page .............
  • Page 6 Table 9-2 Error Message ................50 Table 9-3 Warning Message ................. 51 Table 9-4 Fault Message ................52 Table 11-1 Specification for RPI-M8/ M10/ M12 ..........56 Table 11-2 Specification for RPI-M15/ M20/ M30 .......... 58 Table 11-3 Specification for RPI-M15A/ M20A ..........60...

  • Page 7: General Information

    This manual provides the detail information of specification, installation procedures and all related function setting about the solar inverter model RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30. Installation technicians must be well-trained and qualified for installing solar system and must follow all the safety instruction and installation procedures.

  • Page 8: Product Description

    1.4 Product Description The “RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30” is a 3 phase grid-tied solar inverter. This device converts direct current (DC) electricity from photovoltaic power collected from PV Array into 3 phase alternating current (AC) to feed the excess capacity back to the local mains electrical grid. Using of cutting-edge technology allows wide voltage input range (200~1000V) and high performance efficiency based on user friendly operation design.

  • Page 9: Additional Information

    1.7 Additional Information For more detail information of RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30 other related product information, please visit website http://www.deltaww.com for more support. 2. Installation and Wiring 2.1 Instruction before Installation Due to the variety of user’s installation environment, reading thoroughly on this before installation is strongly recommended.

  • Page 10: Unpacking

    2.3 Unpacking  Unpacking process for RPI-M8/ M10/ M12/ M15A/ M20A. 1. Open the carton (see Figure 2-2a). 2. Remove the cover on the inner box (see Figure 2-2b). 3. Lift Inverter (see Figure 2-2c). Figure 2-1 Carton unpacking process ...

  • Page 11: Identify Of Inverter

    Users can identify the model number by the information on the product label. The model number, specification and the series No. is specified on the product label. Regard to the label location, please refer to the figure 2-3. RPI-M8/ M10/ M12 RPI-M15A/ M20A RPI-M15/ M20/ M30 Figure 2-3 The identification label 3.

  • Page 12: Dimension

    612 [24.1] 278 [10.9] Front view Side view Back view RPI-M8/ M10/ M12 RPI-M15A/ M20A Bottom view Figure 3-2 Dimension of RPI-M8/ M10/ M12/ M15A/ M20A Top view 278 [10.9] 612 [24.1] Front view Side view Back view 260 [10.2]...

  • Page 13: Inverter Input/Output Interface

    3.3 Inverter Input/Output Interface String1 String3 String2 String4 RPI-M8/ M10/ M12/ M15A/ M20A AC Connector DC Switch 230/400Vac, 3Ph Communication Fan*1 or 2 -RS-485 *2 -EPO *2 -Dry Contact *2 Figure 3-4 Input/Output interfaces of M8/ M10/ M12/ M15A/ M20A...

  • Page 14: Lcd Display And Buttons

    3.4 LCD Display and Buttons LCD Display ENT: Enter Menu or Confirm LED Indicator (GRN/RED) EXIT: Exit Menu Down: Move Down UP: Move Up Figure 3-6 LCD display and control panel 3.5 Air Outlet Figure 3-7 Air outlet illustration...

  • Page 15: Installation

    4. Installation 4.1 Installing Location WARNING！ Death and serious injuries may occur. ● Do not install the unit near/on the flammable objects. ● Do not install the unit at the location that people can entry/touch easily. ● Please mount the unit tightly on the solid/ smooth wall. ●...
  • Page 16 M6 Screw M6 Screw 4-1-b Wall > 70cm > 80cm > 80cm M6 Screw *6 Inverter #1 Inverter #2 > 125cm M6 Screw *6 4-1-c 4-1-d Figure 4-1 Screw the mounting bracket...
  • Page 17 Figure 4-2 Correct and incorrect installation illustration CAUTION  The location and hardware should be a solid surface or a firm holder that suitable for the weight of inverter.  Suggested to install the inverter to the location which offers free and safe access.

  • Page 18: Wiring

    > 60 CM > 60 CM > 60 CM > 60 CM > 60 CM Figure 4-3 Proper installation gap 5. Wiring 5.1 Preparation before Wiring To avoid accidents, please confirm that the PV inverter’s power of both DC and AC are switched off.
  • Page 19 PV Array DC Distribution box DC1 DC2 DC Wiring Parallel or Separate AC Wiring Communication * Some models can support 3P3W Wiring system, please refer to table 5-3. Figure 5-1 Connection of system if DC inputs are floating PV Array DC Distribution box (Plus-GND or Minus-GND) Must be Parallel...

  • Page 20: Ac Grid Connection: 3P3W+Pe Or 3P4W+Pe

    Before AC wiring, please ensure AC breaker is switched off. 5.2.1 Required Protective Devices and Cable Cross-sections Please use proper upstream circuit breaker to protect the inverter. Table 5-1 Recommended upstream protection Model Upstream circuit breaker RPI-M8 RPI-M10 RPI-M12 RPI-M15 RPI-M15A RPI-M20...
  • Page 21 AC’s wiring can be separated into 3-phase and PE (3P3W) or 3-phase, N, and PE (3P4W). In figure 5-3, the connector has to connect to the inverter’s AC plug. After de-assembling, please follow the polarity to do the proper wiring. (This product allows either positive or negative phase sequence.
  • Page 22 Rotate to tighten the plug Rotate gland to fix cable AC plug Figure 5-4 AC plug illustration for M30 Table 5-3 The wiring system of the inverter. Model RPI-M15/ M20 RPI-M8/ M10/ M12 Wiring P/N: RPIXX3N5430098 or 09 ╳ ╳ 3P3W+PE ○ ○...

  • Page 23: Dc Connection (From Pv Array)

    >1000 Vdc and > Short current.  The input power to the inverter is not recommended to exceed the maximum rated power which show in table 5-3. Table 5-4 Maximum rating of input power Type of limit RPI-M8 RPI-M10 RPI-M12 RPI-M15 Total input power 8.8 kW...

  • Page 24: Communication Module Connections

    DC wiring polarity is divided into positive and negative, which is shown as in figure 5-5. The connection shall be coherent with the indication marked on inverter. PV-KBT4/6 Ⅱ PV-KST4/6 Ⅱ Figure 5-5 DC Wiring illustration 5.4 Communication Module Connections The Communication Module support the functions of communication with computer, also provides 2 EPO input signals and 1 dry contact.
  • Page 25 Table 5-6 Definition of RS 485 pin FUNCTION DATA- DATA+ VCC(+12V) Terminal Resister 120Ω(1/2W) DATA+ to DATA- Terminal Resister 120Ω(1/2W) DATA+ to DATA- Pin Layout: Data Format: FUNCTION Baud rate: 9600 Data bits: 8 DATA- RS485/USB Stop bit: 1 DATA+ Parity: N/A VCC(+12V) RS485/RS232...

  • Page 26: Epo Functions

    5.4.2 EPO Functions RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30 provides 2 sets of emergency power off function. When the outer external switch is short, the inverter will shutdown immediately. Tabel 5-9 EPO functions Enable EPOs Short EPO1 Pin1 & Pin2...

  • Page 27: Active Power Control

    6.1 Active Power Control 6.1.1 Power Limit According to BDEW technical guideline in page 25 of June 2008 version as below: It must be possible to operate the generating facility at reduced power output. In the cases listed below, the network operator is entitled to require a temporary limitation of the power feed-in or disconnect the facility: potential danger to secure system operation, congestion or risk of overload on the network operator’s network,...

  • Page 28: Reactive Power Control

    Gradient Gradient ( Hz ) ( Hz ) stop start stop recovery start 6-1-a 6-1-b Figure 6-1 Power vs. frequency characteristic 6.2 Reactive Power Control According to BDEW: With active power output, it must be possible to operate the generating plant in any operating point with at least a reactive power output corresponding to a active factor at the network connection point of cos φ...

  • Page 29: Active Factor Cosφ(P)

    6.2.2 Active Factor cosφ(P) Once user enables this method, inverter will deliver reactive current according to output active power at that moment. The below figure is an example. Please refer to 7.2.6.4.4 cosφ(P) for the settings procedure. cosφ Cap 0.85 P/Pn Ind 0.85 Figure 6-2 cosφ(P) characteristic...

  • Page 30: Fault Ride Through (Frt)

    6.3 Fault Ride Through (FRT) According to BDEW: 2.5.1.2 Dynamic network support Dynamic network support means voltage control in the event of voltage drops within the high and extra-high voltage network with a view to avoiding unintentional disconnections of large feed-in power, and thus network collapse. In the light of the strong increase in the number of generating plants to be connected to the medium-voltage network, the integration of these plants into the dynamic network support scheme is becoming ever more important.
  • Page 31 10% of the nominal capacity per second (TC2007; 3.3.13.5, section 14). Figure 6-4 Borderlines of the voltage profile of a type-2 generating plant at the network connection point RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30 implements the FRT behavior as the figure below, in area 1. Keep normally operate 2.

  • Page 32: Turn On/Off Pv Inverter

    7. Turn on/off PV inverter WARNING：BURN HAZARD The enclosure temperature may exceed over 70° C while operating. Danger may occur owing to hot surface. Please do not touch! After installation, please confirm the AC, DC, and Communication connection are correct. Turn the DC switch to the ON postion. When solar irradiation is sufficient, the device will operate automatically after no mistakes on self-auto test (about 2 minutes at 1 startup of a day).
  • Page 33 Table 7-1 LED indicator Condition Green LED Red LED Standby or Countdown FLASH Power ON Error or Fault Night time (No DC) Bootloader mode FLASH *1 ON 1s / OFF 1s *2 ON 1s / OFF 1s, Green and Red are interleaving First startup, user has to select the country and language.

  • Page 34: Home Page

    7.1 Home Page When inverter is operating normally, LCD will show home page as Figure 7-4, user can get the information of output power, inverter status, E-today, date and time. Today Energy E-Today: 47kWh Day - Time 21. Jun 2010 13:50 Today Runtime Output Power Runtime: 8.2Hrs...

  • Page 35: Energy Log

    7.2.2 Energy Log After pressing ENT in this page, user can view the historical data about power generating yearly, monthly, and daily. Energy Log - Year Energy Log - Month Energy Log - Day Energy Log - Total 21. Jun 2010 13:50 21.

  • Page 36: Operation Data

    7.2.4 Operation Data Has 4 pages, record the maximum and/or minimum values of history, including voltage, current, power and temperature. Operation Data – 1/4 Operation Data – 2/4 21. Jun 2010 13:50 21. Jun 2010 13:50 Maximum Input1 Maximum (Vdc) Voltage Voltage (Vdc)

  • Page 37: Settings

    7.2.6 Settings “Settings” includes Personal Setting, Coefficients setting, Install Setting, Active/Reactive Power Control, and FRT. Settings 21. Jun 2010 13:50 Personal Settings Coefficients Settings Install Settings Active/Reactive Power Control Figure 7-11 Setting page 7.2.6.1 Personal Setting User can set Language, Date, Time, Screen Saver, LCD brightness and contrast in Personal Setting.

  • Page 38: Coefficient Setting

    7.2.6.2 Coefficient Setting Users can set the following parameters according their needs. Coefficient Settings 21. Jun 2010 13:50 CO2 Saved kg/kWh 1.86 Earning Value/kWh [ 2.50 Currency ($,€) € ] Figure 7-13 Coefficient setting page 7.2.6.3 Install Setting Correct passwords are requested when entering Install Setting. Install Setting for user and installation technician are different.
  • Page 39 Password Install Settings Install Settings 21. Jun 2010 13:50 21. Jun 2010 13:50 21. Jun 2010 13:50 Inverter ID AC Connection 3P4W Insulation RCMU Country ItalyMV EXIT Grid Settings Reconnection Time [ 60 s Ramp-up Power Figure 7-14 Install setting page –User mode Install Settings Insulation 21.
  • Page 40 Grid Settings – 1/4 Grid Settings – 2/4 21. Jun 2010 13:50 21. Jun 2010 13:50 Vac High Off 276.0 V Vac High Off Slow 276.0 V 253.0 V Vac High On 253.0 V Vac High On Slow Vac High Off T 0.5 s 0.5 s Vac High Off Slow T...

  • Page 41: Active/Reactive Power Control

    The function is same as Vac High Off T, but the time must be Vac High Off Slow T longer than former. The function is same as Vac Low Off, but the value must be Vac Low Off Slow higher than former. The function is same as Vac Low On, but the value must be Vac Low On Slow higher than former.

  • Page 42: Power Limit

    7.2.6.4.1 Power Limit User can set percentage of actual or rated power to limit inverter’s output power. Inverter will start the action once user set Mode as “ON”. On the contrary, inverter will stop power reduction and back to MPP Tracking once user set Mode as “OFF”.

  • Page 43: Constant Cosφ

    Constant cosφ 7.2.6.4.3 When this Mode is turned on, inverter will maintain power factor as a constant value. Users can set power factor from Cap 0.80 to Ind 0.80. Reactive Power Control 21. Jun 2010 13:50 cosφ Ind 0.90 Mode Figure 7-21 Constant cosφ...

  • Page 44: Constant Reactive Power

    7.2.6.4.5 Constant Reactive Power When this Mode is turned on, inverter will maintain reactive power as a constant value. Reactive Power Control 21. Jun 2010 13:50 Reactive Power (Q/Sn) Cap 30 Mode Figure 7-23 Constant Reactive Power setting page 7.2.6.4.6 Q(U) RPI-series support two kind of Q(U) curves.

  • Page 45: Frt (Fault Ride Through)

    7.2.6.5 FRT (Fault ride through) This function is only for Germany MV, Italy LV, and Italy MV. It is not recommended that users modify the default values. FRT – 1/2 21. Jun 2010 13:50 Dead band - Vh Dead band - Vl K factor K factor U/Un...

  • Page 46: Clean Fan

    RPI-M15A/ M20A has 2 sets of fan. RPI-M15/ M20/ M30 has 4 sets of fan. After disconnect the connectors, user can pull out the whole fan bracket from inverter and clean up the fan. RPI-M8/ M10/ M12 RPI-M15A/ M20A RPI-M15/ M20/ M30...

  • Page 47: Replace Fan

    Then replace new fan and installed it reversely (Figure 8-2 illustrates about replacing the first fan on fan bracket). RPI-M8/ M10/ M12 RPI-M15A/ M20A RPI-M15/ M20/ M30 Figure 8-2 Disassembling fan 8.3 Clean Air Outlets...

  • Page 48: Measurement, Error Message And Trouble Shooting

    9. Measurement, Error message and Trouble Shooting Please refer to the following tables for Measurement, Error message, and Trouble Shooting information. 9.1 Measurement Table 9-1 Measurement and message E-Today: 47kWh Power Meter 21. Jun 2010 13:50 21. Jun 2010 13:50 Input1 Input2 Output...
  • Page 49 Operation Data – 3/4 Operation Data – 4/4 21. Jun 2010 13:50 21. Jun 2010 13:50 Temperature Max. Min. Output Maximum Voltage (Vdc) 59.3 15.7 Inside (℃) Current 30.5 Heatsink - 1 75.5 15.3 (℃) Power 20311 74.2 15.2 Heatsink - 2 (℃) Frequency (℃)
  • Page 50 E-Month Total energy generated in that month Month CO2 saved Accumulated CO2 emission retrenched in that month Peak Hour The maximum energy generated of one hour in that day E-Day Total energy generated in that day Day CO2 saved Accumulated CO2 emission retrenched in that day Input1 Voltage Maximum The maximum DC Input1 voltage from history Input1 Current Maximum...

  • Page 51: Error Message & Trouble Shooting

    9.2 Error Message & Trouble Shooting Table 9-2 Error Message ERROR Message Possible cause Action 1. Actual utility frequency is over 1. Check the utility frequency on the inverter AC Freq the OFR setting terminal High 2. Incorrect country setting 2.
  • Page 52 1. Actual Solar1 voltage is over 1. Modify the solar array setting, and make the Solar1 High 1000Vdc Voc less than 1000Vdc 2. Detection circuit malfunction 2. Check the detection circuit inside the inverter 1. Actual Solar2 voltage is over 1.
  • Page 53 Table 9-4 Fault Message FAULT Message Possible cause Action 1. Check the utility waveform. Grid connection of HW DC 1. Utility waveform is abnormal inverter need to be far away from non-linear Injection 2. Detection circuit malfunction load if necessary 2.
  • Page 54 1. Insufficient input power 1. Check the input voltage, must > 150Vdc HW DSP 2. Auxiliary power circuitry 2. Check the auxiliary circuitry inside the inverter ADC3 malfunction 3. Check the detection circuit inside the inverter 3. Detection circuit malfunction 1.
  • Page 55 1. One or more relays are Relay Test sticking 1. Replace the defective relay(s) Short 2. The driver circuit for the relay 2. Check the driver circuit inside the inverter malfunction 1. One or more relays are abnormal 1. Replace the defective relay(s) 2.

  • Page 56: Commissioning

    10. De-Commissioning 10.5 De-Commissioning Procedure If it is necessary to put the RPI-M8/ M10/ M12/ M15/ M15A/ M20/ M20A/ M30 out of operation for RMA or maintenance, please follow the instruction below. WARNING！Death and serious injuries may occur. To avoid injuries, please follow the procedures below: 1.

  • Page 57: Technical Data

    11. Technical Data 11.1 Specification Table 11-1 Specification for RPI-M8/ M10/ M12 RPI-M8 RPI-M10 RPI-M12 GENERAL Enclosure Powder coated aluminum -20~60℃, full power up to 40℃ Operating temperature 5 – 95% non-condensing. Relative humidity Protection degree IP65 (Electronics) Galvanic isolation...
  • Page 58 > 0.99 @ full power Power factor Adjustable: 0.80 leading – 0.80 lagging DC current injection <0.5% rated current Tare loss <2 W Maximum efficiency 98.2% 98.3% 98.3% EU efficiency 97.4% 97.7% 97.7% 3 Ph + N + PE ; IP67 3-phase AC plug suitable for AC connector 4 mm N/A.
  • Page 59 Table 11-2 Specification for RPI-M15/ M20/ M30 RPI-M15 RPI-M20 RPI-M30 GENERAL Enclosure Powder coated aluminum -20~60℃, full power up to 40℃ Operating temperature 5 – 95% non condensing. Relative humidity Protection degree IP65 (Electronics) Galvanic isolation Safety class Class I metal enclosure with protective earth Weight 67.2kg 67.2kg...
  • Page 60 > 0.99 @ full power Power factor Adjustable: 0.80 leading – 0.80 lagging DC current injection <0.5% rated current Tare loss <2 W Maximum efficiency 98.2 % EU efficiency > 97.5 % 3 Ph + N + PE ; IP67 3-phase AC plug suitable for AC connector 4 mm and 6 mm...
  • Page 61 Table 11-3 Specification for RPI-M15A/ M20A RPI-M15A RPI-M20A GENERAL Enclosure Powder coated aluminum -20~60℃, full power up to 40℃ Operating temperature 5 – 95% non condensing. Relative humidity Protection degree IP65 (Electronics) Galvanic isolation Safety class Class I metal enclosure with protective earth Weight 43kg 43kg...
  • Page 62 Tare loss <2 W Maximum efficiency 98.3 % EU efficiency 97.7 % 3 Ph + N + PE ; IP67 3-phase AC plug suitable for AC connector 4 mm and 6 mm N/A. Please connect to an external protection Fuse device (1.25 rated current) SYSTEM INFORMATION / COMMUNICATION Black-on-white graphical LCD display...

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