MidNite Solar MN 15-12K AIO User Manual
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MidNite Solar MN 15-12K AIO User Manual

All in one inverter/charger system
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Version: V2.1
USER MANUAL
MN 15-12K AIO
All in one Inverter/Charger System

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Summary of Contents for MidNite Solar MN 15-12K AIO

  • Page 1 Version: V2.1 USER MANUAL MN 15-12K AIO All in one Inverter/Charger System...
  • Page 2 MIDNITE is not responsible for system failure, damage or injury resulting from improper installation of its products. Information in this manual is subject to change without notice. This manual is only focused on the inverter labeled as: MN 15-12K AIO. Contact...

  • Page 3: Table Of Contents

    1.1 General Description ........................................5 1.2 Specifications ..........................................6 1.3 Wire Gauge Guide ........................................8 2. Installation............................................9 2.1 Mounting the MN 15-12K AIO ....................................9 2.2 Connecting PV Modules ......................................11 2.3 Integrating Batteries........................................12 2.4 Lightning protection – Suppressor Installation ................................14 2.5 Integrating the Generator/Smart Loads/AC Coupling ..............................

  • Page 4: Important Safety Instructions

    WARNINGS Read this entire document before installing or using the MIDNITE MN 15-12K AIO inverter. Failure to follow any of the instructions or warnings in this document can result in electrical shock, serious injury, or death. Damage to the inverter is also possible, potentially rendering it inoperable.

  • Page 5: Midnite: At A First Glance

    The box should include all items shown in the component guide. If there is damage or missing parts, immediately call the phone number (USA) (360)-403-7207. COMPONENT GUIDE The MIDNITE MN 15-12K AIO system includes the following components: Component Description Quantity...
  • Page 6 WiFi/Ethernet Dongle φ67.5mm: 3 Bushing Ring （ φ67.5mm & φ49mm ） φ49mm: 6 Toroid （ φ53mm(Battery) & φ30mm(Ground & Grid) Gutter Template...

  • Page 7: General Description

    1.1 General Description AC INPUT LOAD LOAD LOADLOAD AC OUT GRID GROUND NEUTRAL 1 2 3 4 1 2 3 4 PARA 1 2 3 4 5 6 7 8 9 1 2 3 4 DR Y C T/ Meter B MS RS485 Component...

  • Page 8: Specifications

    1.2 Specifications 10.11" 17.32"(440.0mm) 16.54" (256.8mm) (420.0mm) 16.00"(406.4mm) 2×Φ0.31" (Φ8.0mm) 0.31" 9.06" (8.0mm) (230.0mm) 37.40" 0.28" (950.0mm) (7.0mm) 24.97" (634.3mm) 9.52" 13.32"(338.4mm) (241.8mm) 10.16"(258.0mm) 6.61"(167.8mm) 3.84" (97.6mm) 6×Φ1.75" (Φ44.45mm) 3×Φ2.50" (Φ63.4mm) 8.08" (205.3mm) 5.70" (144.8mm) 1.74" (44.1mm) 4.78" (121.4mm) 8.39"(213.0mm) 11.93"(303.0mm) Terminal Torque [in-lb]...
  • Page 9 North America: MN 15-12K AIO Datasheet UL: MN 15-12K AIO Input Data (PV) Max. Allowed PV Power (STC) 15,000W Nominal Voltage Range (Vdc) 70-550VDC Startup Voltage Max. Input Voltage 600V Max. Input Current per MPPT PV A: 30A; PV B/C: 22A No.

  • Page 10: Wire Gauge Guide

    1.3 Wire Gauge Guide 1. AC Input/Outputs: • “AC INPUT GRID” Terminal 100A MAX passthrough, 2 AWG conductor. • “AC OUTPUT” Terminal 100A MAX passthrough, 2 AWG conductor. • Backed up Sub-panel may have more than 100 amps of load circuits although the utility pass through current is limited to 100 amps continuous per leg.

  • Page 11: Installation

    Normal stab in breakers are thermal b r e a k e r s and t h u s can only be used at 80% of their rating. MidNite Solar uses hydraulic/ magnetic breakers that can be continuously used at 100% of their rating. Size cables for 125A.
  • Page 12 G. Use gutter template to mark the installation location on the wire guard. 4×Φ0.25''(6.0mm) 2.30''(60mm) Damage to the LCD Screen due to direct sunlight exposure will not be covered by warranty H. Use the bushing rings as needed. When installing the inverter onto a gutter, the supplied bushings will be used to eliminate wire chafing. When using conduit to bring wiring to the inverter, the bushings will not be used.

  • Page 13: Connecting Pv Modules

    I. Mount the inverter in the optimal orientation as shown below. ≤15° 90° Lean back ≤15° Upright Horizontal Upside-down 2.2 Connecting PV Modules The inverter has 3 independent MPPTs and each can handle up to 2 PV strings. Each MPPT can operate at a current of 30A/22A/22A (self-limiting) and a MAX Voc of 600V.

  • Page 14: Integrating Batteries

    The inverter/charger reaches a max battery charge/discharge of 210A. MIDNITE MN 15-12K AIO is a 48V nominal system. DO NOT connect the inverter to any other battery configuration. If you use 12V batteries, you MUST NOT exceed four (4) batteries in series, as shown in Figure 5b. The inverter can work with any battery chemistry as long as it remains within the range of 40Vdc to 64Vdc.
  • Page 15 Multi-Terminal Installation The two 5/16” battery input studs of the MN 15-12K AIO will accept most 4/0 battery terminal lugs. If a charge / discharge rate of 210A is needed and the cable length is in excess of 10 feet, then two cables should be used. Back to back lugs are possible to be installed on these studs. Two 2/0 cables in parallel have a higher current carrying capacity than a single 4/0 and will result in less voltage drop.

  • Page 16: Lightning Protection - Suppressor Installation

    AC Coupling→ On “AC COUPLING INPUT” Terminal The MIDNITE MN 15-12K AIO is a system that supports the addition of an AC coupled solar panel system. The max solar input power can be expanded by coupling micro or string inverters into the “SMART LOADS AC Coupled” terminal. A full AC coupled solar system is not recommended as power control and monitoring is limited.

  • Page 17: Automatic Generator Start

    • BTS: Battery temperature sensor, not polarity sensitive. Used for voltage compensation for Lead Acid batteries. The standard MidNite MNBTS. • RSD: Normally open dry contact for EPO (emergency power off). The built in transmitter is Sunspec compatible. MidNite Solar manufacturers String level Sunspec receivers that work with this inverter.
  • Page 18 BMS Port (CAN/RS485, Only for Lithium Battery) • CAN BUS communication principle: CAN_H to CAN_H, CAN_L to CAN_L. • Prepare RJ45 terminals and strip approperate length of COM cables • Always face the flat side of the terminal, and count the pin slots from left to right from 1 to 8. Read the pin definitions of both the battery and inverter carefully.

  • Page 19: Limit Sensors (Ct/Meter)

    1 2 3 4 5 6 7 8 9 2.8 Limit Sensors (CT/Meter) The CT/Meter will measure and calculate the demand in the Main Service Panel which the MIDNITE MN 15-12K AIO will then use to accurately supply and offset all home loads.
  • Page 20 Wiring the CT sensor PARA CT/Meter RS485 CT Sensors for Stand-alone application 120V/240V Split phase Each inverter will include two CT. • Connect CT1 from phase L1 to pin 7 (White-Brown), 8 (Brown). • Connect CT2 from phase L2 to pin 6 (Green), 5 (White-Blue). Function Description RS485_ A...

  • Page 21: Rs485

    CT+Meter for Parallel Systems 120V/208V Three-Phase • The three-phase system requires three CTs and 1 meter. • Please contact sales at 360-403-7207 to purchase the meter and bigger CT. Function Description RS485_ A 24 25 RS485_B 2.9 RS485 4-Pin interface for RS485 communication 1 2 3 4 Function Description...

  • Page 22: Parallel Communication

    2.11 Emergency Stop and Rapid Shutdown The (3,4) emergency stop pins of the MIDNITE MN 15-12K AIO are a normally open contact that triggers rapid shutdown (RSD) when closed. RSD will cut all power including the MIDNITE ’s internal power supply and stop all AC outputs. The MIDNITE will disconnect any RSD transmitter that will then shutdown all solar panels when the emergency stop button is pressed.

  • Page 23: Powering-Up And Testing The Midnite

    D. Verify that voltage between neutral and ground is 0Vac. Note: Stray parasitic capacitance in wiring may show low voltages present. E. Verify that voltage between “AC INPUT GRID” L1 and “AC OUT” L1 is 0V. Do the same for L2. 4. Power ON MIDNITE MN 15-12K AIO A. Power on the PV.

  • Page 24: Power Off Sequence

    2.13 Power Off Sequence A. Connect the cell phone App via Bluetooth. And click the Power OFF on the App. Or you can hold the ON/OFF button on the side of the inverter for 5 seconds in this step when performing subsequent shutdown. B.

  • Page 25: Lcd Screen

    2.15 LCD screen LCD screen is supplied on this inverter. If you elect to use the LCD screen, the following introduction will help you understand the function of each icon displayed. LCD screen will be automatically turned off if there is no operation within 10 mins (which cannot be changed by default). You can tap the ON/OFF button on the side of inverter to wake up the LCD screen.
  • Page 26 Example: Icon Display Area E-Total Data Unit K kWh Data Display Area Display Area Example: Icon Display Area Phase Data Unit Data Display Display Display Area Area Area Icon Introduction-2 The PV icon represents the power of PV. The Battery icon represents the current battery charge percentage or the voltage of battery.. The E-Today icon represents the electricity energy generated today.
  • Page 27 Icon Status Description Icon Status Description Icon Name Light Description Any PV voltage exists ( It should be higher than the Min. PV Startup Voltage) . PV Voltage is lower than the Min. PV Startup Voltage. Grid Voltage and frequency are normal. Grid Grid overvoltage / undervoltage / over frequency / under frequency occurs.

  • Page 28: App Setting Guide

    3. App Setting Guide Download App for Local Setting • Scan the QR code to download the App MidNite Pro. • Download the APP from the App Store or Google Play Access Permission Before using the local setting, the APP should access some permissions. (You can allow them when you install the APP or grant permissions in your own phone setting.) When the APP asks for permission, please click Allow.

  • Page 29: Installer Login

    3.1 Installer login Select the installer role to log in. Select the installer Enter the password Home 3.2 Stored energy A. Set the work mode. B. Enable the Zero Export button. C. Set the related battery parameters. D. Set smart load, generator or AC coupling parameters. E.
  • Page 30 Work Mode Self Consumption Select the "Self Consumption". Under Self consumption mode, the priority of PV energy consumption will be Load > Battery > Grid, that means the energy produced by PV gives priority to powering local loads, the excess energy is used to charge the battery and the remaining energy is fed into the grid. This is the default mode to increase self consumption rate.
  • Page 31 Grid Feed in priority (Sell to grid) Select the "Grid Feed in priority (Sell to grid)". Under this mode, the priority of PV energy consumption will be Load > Grid > Battery, that means the energy produced by PV gives priority to powering local loads, the excess energy is fed into the grid, and the remaining energy is used to charge the battery.
  • Page 32 ≥ P Load Grid AC OUT Normal load Battery Smart load...
  • Page 33 Off Grid Select the "Off Grid". Under this mode, the priority of PV energy consumption will be Battery > Load > Grid. This mode aims at charging the battery quickly, and at the same time, you can choose whether to allow AC to charge the battery. Does not allow AC charging In this mode, the battery can be charged only with PV power, and the charging power varies with PV power.
  • Page 34 b) Limited PV power When the PV energy is not enough to charge the battery, the grid energy will charge the battery as supplement. Meanwhile, the grid energy is consumed by loads. Grid AC OUT Battery Smart load Normal load Smart Load Smart Load There are three terminals available.
  • Page 35 Generator Maximum Input power from Generator: Does not allow the generator to produce power larger than the setting value. Maximum GEN charge power: Maximum battery charge power from generator. Generator start and stop by battery SOC: The battery SOC is lower than or exceeds the value, the will generator will start or stop.
  • Page 36 AC coupling AC Coupling start and stop by battery SOC: The battery SOC lower than/exceeds the value, the AC coupling start/stop. AC Coupling start and stop by battery voltage: The battery voltage lower than/exceeds the value, the AC coupling start/stop. Off-network output maximum frequency: This parameter is used to limit the output power of grid-tied inverter when the hybrid inverter works under off-grid.
  • Page 37 Logic Diagram of Start/Stop Smart Load/Generator/AC Coupling Port Function (by Battery SOC) Disable (default) Port Off ≥100% ＜80% Smart Load Start Smart Load Stop Off-Grid Battery ＜80% Smart Load Smart Load Stop On-Grid Smart Load Start Run time ＜Generator MaxRun time Generator Start Gen dry ≤50%...
  • Page 38 Logic Diagram of Start/Stop Smart Load/Generator/AC Coupling Port Function (by Battery Voltage) Disable (default) Port Off ≥60V ＜40% Smart Load Start Smart Load Stop Off-Grid Battery ＜40V Smart Load Smart Load Stop On-Grid Smart Load Start Run time ＜Generator MaxRun time Generator Start Gen dry ≤48V...
  • Page 39 TimeBase Control The TimeBase Control (Forced Charge/Discharge) function is designed to control the time setting of charging and discharging the inverter. According to the demands of application, the user can set the inverter to work on forced charge/discharge the battery in any working mode. There are three time periods in which you can set this function.

  • Page 40: Communication

    3.3 Communication Connect to the router. Click Communication Connect to Wifi 3.4 Grid Set the grid parameters. Click Grid parameters...

  • Page 41: General

    3.5 General Set the protection measures, and other (options including Grid Voltage type, Buzzer, DRM Function, Parallel mode listed). Enable or set them when necessary.) Click General Enable or set 3.6 Power control Set the power control parameters . Click Power control Set parameters...

  • Page 42: Reactive Power Control

    3.7 Reactive power control Set the reactive power time and mode of the device, and the parameters for each mode. Click Reactive power control Set parameters 3.8 Equipment maintenance Synchronize date and time, Click the Equipment maintenance then click the button...

  • Page 43: Programming Guide

    3.9 Programming Guide The next diagram shows the most used/common parameters for programming the MIDNITE MN 15-12K AIO. Work Mode Zero Export Stored energy Battery Smart Load Communication TimeBase Control Grid Settings General Power control Reactive power control Installer Account...

  • Page 44: User Interface

    4. User Interface Download App for Local Setting • Scan the QR code to download the App MidNite Pro. • Download the APP from the App Store or Google Play Access Permission Before using the local setting, the APP should access some permissions. (You can allow them when you install the APP or grant permissions in your own phone setting.) When the APP asks for permission, please click Allow.

  • Page 45: Home

    4.1 Home In this page, you can view the basic information of inverter. Grid state , present power Generator present Present PV power power Normal load present power, On-grid or off-grid, backup load present power Work mode Battery state, present power, SOC PV production today consumption today...

  • Page 46: Energy

    4.1 Energy Click Energy at the bottom to view the curve graph of home, solar, battery, and grid production or consumption over a time period (day, month, year) .Data curves in the following figures are only for illustration. You can click anywhere on the graph to see the energy value of any time. Choose home, solar, battery, and grid Switch to display...

  • Page 47: Logs

    4.3 Logs Click Log at the bottom and then go to the history log page (as shown below). It contains all the logs for the inverter. 4.4 Switch Click Switch at the bottom and then switch other inverters.

  • Page 48: Parallel Systems

    5. Parallel Systems 5.1 Before Enabling Parallel Operations A. BMS communication connection is only for lithium battery. • For shared lithium battery connection, please refer to Three-phase equipment connection diagram to connect the BMS communication cable. • For standalone lithium battery connection, the BMS communication cable needs to be connected to each inverter. B.
  • Page 49 Inverter 8 Inverter 9 Parallel systems with 2 inverters must have their DIP switches in the ON position . Parallel Systems MIDNITE MN 15-12K AIO @ 120/240V Split-Phase Grid “Pass Through” (A) # of inverters in parallel Continuous output power...

  • Page 50: Parallel Systems Programming Sequence

    Parallel Systems MIDNITE MN 15-12K AIO @ 120/208V 3-Phase Grid “Pass Through” (A) # of inverters in parallel Continuous output power Continuous output power Peak power 10 sec with PV (kW) with batteries (kW) (kVA) (only 2 phases) (all phases but unbalanced) Make sure all inverters in parallel have the same firmware version by verifying the ‘DSP’, ‘CSB’, and ‘DC-DC converter’...
  • Page 51 Parallel Systems MIDNITE MN 15-12K AIO @ 120/208V 3-Phase Under three-phase connection mode, it is necessary to connect the APP to each inverter and set related parameters by following the steps below. 1. Installer login. 2. Go to Settings > General to enable parallel mode, and set the phase position accordingly, as shown in Figure a-c. Notice that all three inverters should be set in this step.
  • Page 52 Examples of Wiring Diagram 1 inverter @ 120/240V 2 inverter @ 120/240V Using 2 phases of 3 Using 2 phases of 3 G RID L1 L2 L1 L2 G RID G RID L1 L2 L1 L2 3 inverters @ 120/208V 2 inverters @ 120/208V using 3 phases of 3 (Balanced)

  • Page 53: Three-Phase Systems: Programming And Troubleshooting

    • Same process should be done for LOAD side. • Measuring voltage different than 0Vac means the measured lines are not the same phase. • The MN 15-12K AIO can only receive direct rotation “ ” (clockwise). Be sure to check both, AC INPUT GRID and AC OUT terminal connections; both must be correct. If the error persists you will need to check your AC connection beyond the inverter and you will need to verify that the phases are correctly labeled from your meter.
  • Page 54 MIDNITE MN15-12KW-AIO Standard Wiring Diagram ③ ② L� L� Load Grid L� L� L� L� BAT+ BAT- SMA RT LOADS AC OUT AC INPUT LOAD LOAD LOADLOAD A C C O U PLI N G GEN INPUT GRID IN P UT ④...
  • Page 55 LOCATION SPECIFICATION LABEL CONDUCTOR ① BMS is only for Lithum battery. When applying standalone lithum battery connection, each inverter should be connected to BMS COM cable. ②The DC/AC breakers specification please refer to TABLE 1. Battery side(DC) 300A/80V 4/0 AWG ③The arrow indicates the current in CT flows from the grid to the inverter.
  • Page 56 MIDNITE MN15-12KW-AIO - 2<N≤5 Parallel Inverters | 120/240V Standard Wiring Diagram Inverter N1 Inverter N2 Inverter N 2 32 5 35 8 38 11 12 5-500) ② ③ 13 14 16 17 1 9 21 24 25 24 25 L� L� L�...
  • Page 57 Diagram 02 ① BMS is only for Lithum battery. When applying standalone lithum battery connection, each inverter should be connected to BMS COM cable. ②The DC/AC breakers specification please refer to TABLE 1. ③The arrow indicates the current in CT flows from the grid to the inverter. ④...
  • Page 58 MIDNITE MN15-12KW-AIO - 2 Parallel Inverters | 120/208V Standard Wiring Diagram Inverter N1 Inverter N2 ③ 2 32 5 35 8 38 11 12 2 5 8 Meter (DTSU666) 13 14 16 17 19 21 2 4 25 Grid Load Grid 24 25 Load...
  • Page 59 (AC) L1 (AC) L2 NEUTRAL GROUND TABLE 1 TABLE 2 (DC) PV- (DC) PV+ WIRE GAUGE GUIDE (COPPER) (DC) BAT - (DC) BAT + BREAKER SPECIFICATION LOCATION SPECIFICATION LABEL CONDUCTOR ① BMS is only for Lithum battery. When applying standalone lithum battery connection, each inverter should be connected to BMS COM cable. ②...
  • Page 60 MIDNITE MN15-12KW-AIO Standard Wiring Diagram – 3 Parallel Inverters | 120/208V Inverter N2 Inverter N3 Inverter N1 ③ 3 6 9 2 32 5 35 8 38 11 12 2 5 8 Meter (DTSU666) Load Grid Load Grid Load Grid L�...
  • Page 61 (AC) L1 (AC) L2 NEUTRAL GROUND TABLE 1 TABLE 2 (DC) PV- (DC) PV+ (DC) BAT - (DC) BAT + WIRE GAUGE GUIDE (COPPER) BREAKER SPECIFICATION ① BMS is only for Lithum battery. When applying standalone lithum battery connection, each inverter should be connected to BMS COM cable. ②...

  • Page 62: Troubleshooting Guide

    7. Troubleshooting Guide 7.1 MIDNITE Error codes FAULT INSTRUCTION COMMON CAUSE / REMEDY 1. If the alarm occurs occasionally, possibly the power grid voltage is abnormal temporarily, and no Grid over voltage action is required. 2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local power bureau, revise the electrical protection parameter settings on the inverter through the App.
  • Page 63 FAULT INSTRUCTION COMMON CAUSE / REMEDY 1. Local manual shutdown is performed in APP. 2. The monitor executed the remote shutdown instruction. Remote off 3. Remove the communication module and confirm whether the alarm disappears. If yes, replace the communication module. Otherwise, please contact the customer service. 1.
  • Page 64 FAULT INSTRUCTION COMMON CAUSE / REMEDY 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required. Inverter abnormal 2. If the alarm occurs repeatedly, the inverter cannot work properly. Pls. contact the customer service center.
  • Page 65 FAULT INSTRUCTION COMMON CAUSE / REMEDY 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required. 2. Check the communication line connection between BMS and inverter (lithium battery). Battery under voltage 3. The battery is empty or the battery voltage is lower than the SOC cutoff voltage. 4.
  • Page 66 FAULT INSTRUCTION COMMON CAUSE / REMEDY 1. If the alarm occurs occasionally, the inverter can be automatically recovered and no action is required. BACKUP over dc-bias voltage 2. If the alarm occurs repeatedly, the inverter cannot work properly. Pls. contact the customer service center.
  • Page 67 NOTE...
  • Page 68 MIDNITE SOLAR USER MANUAL 614-00646-00...

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