MidNite MN3024DIY User manual

1 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual  Hybrid Inverter / Charger User Manual MN3024DIY

2 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual

Important safety instructionsPlease keep this manual for future use.The MNS Hybrid Inverter System is an all-in-one solution for 120 volt AC production, battery chargingfrom the AC input and a built-in MPPT PV Charge ControllerThis manual contains all safety, installation and operating instructions for the MNS Hybrid Inverter.Please read all instructions and precautions in the manual carefully before installation and use.ØHigh voltages exist inside the MNS Hybrid Inverter. To avoid personal injury, users shall not disassemble theMNS Hybrid Inverter themselves. Contact our Midnite Solar technical support department if the unit is a need for repair.ØDo not install the MNS Hybrid Inverter in harsh environments such as moist, oily, ﬂammable, explosive, or heavilydusty areas. The unit is not rain-proof, do not install outside unless under cover where it will not be exposed to rain.ØThe mains input and AC output are high AC voltage, do not touch the wiring terminals.ØThe housing of the MNS Hybrid Inverter is hot when it is operating especially under full load.The exposed heatsink may be very hot, do not touch.ØDo not open the terminal protective cover when the MNS Hybrid Inverter is operating.ØIt is necessary to install a proper external circuit breaker on the 120V AC in and PV in connections.The unit has an internal circuit breaker on the 120V AC in but an external circuit breaker is required in addition. ØAlways turn off all combiners and AC circuit breakers of the PV array, AC mains & battery before installingand/or adjusting the wiring of the MNS Hybrid Inverter.ØAfter installation, check that all wire connections are tight to avoid terminal heating due to poor anda loose connection, which is dangerous and may cause ﬁres.ØThe MNS Hybrid Inverter is for off-grid only. DO NOT Connect the AC OUTPUT to any source of ACincluding GRID and GENERATOR.

3 of 3910-527-1 MN3024DIY REV AMN3024DIYUser ManualCONTENTS 1. GENERAL INFORMATION ............................................................................................................. 4 1.1

PRODUCT OVERVIEW AND FEATURES

................................................................................................... 4 1.2 BASIC SYSTEM INTRODUCTION ........................................................................................................... 5 1.3 APPEARANCE ................................................................................................................................. 6 2. INSTALLATION INSTRUCTIONS .................................................................................................... 7 2.1 INSTALLATION PRECAUTIONS ............................................................................................................. 7 2.2 WIRING SPECIFICATIONSAND CIRCUIT BREAKER SELECTION

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...................................... 8 2.3

INSTALLATION AND WIRING

............................................................................................................. 11 3. OPERATING MODES .................................................................................................................. 17 3.1 CHARGING MODE ......................................................................................................................... 17 3.2 OUTPUT MODE ............................................................................................................................. 18 4. LCD SCREEN OPERATING INSTRUCTIONS ................................................................................... 19 4.1 OPERATION AND DISPLAY PANEL ..................................................................................................... 19 4.2 SETUP PARAMETERS DESCRIPTION

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................................................................... 22 4.3 BATTERY TYPE PARAMETERS.

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........................................................................... 28 5. OTHER FUNCTIONS ................................................................................................................... 29 5.1 DRY NODE ................................................................................................................................... 30 5.2 USB COMMUNICATION PORT

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.......................................................................... 30 6. PROTECTION ............................................................................................................................ 31 6.1 PROTECTIONS PROVIDED

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................................................................................ 31 6.2 FAULT CODE MEANING

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................................................................................... 33 6.3 TROUBLESHOOTING ............................... ....................................................................................... 34 7. SYSTEM MAINTENANCE ............................................................................................................ 35 8. TECHNICAL PARAMETERS ......................................................................................................... 36 9. WARRANTY ..................... ......................................................................................................... 39

4 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual 41. General information 1.1 Product overview and features --

DIY series is a new all-in-one hybrid solar charger/inverter, which integrates battery MPPT solar & AC input charging with sine wave output. Thanks to DSP control and advanced control algorithm, it has fast response speed, high reliability and high industrial standards. Four charging modes are available, i.e. Only Solar, Mains Priority, Solar Priority and Mains & Solar hybrid charging; and two output modes are available, i.e. Inverter and Mains, to meet different application requirements. The solar charging module applies the latest optimized MPPT technology to quickly track the maximum power point of the PV array in any environment and obtain the maximum energy of the solar panel in real time. Through a state of the art control algorithm, the AC-DC charging module realizes fully digital voltage and current double closed loop control, with high control precision in a small volume. Wide AC voltage input range and complete input/output protections are designed for stable and reliable battery charging and protection. Based on full-digital intelligent design, the DC-AC inverter module employs advanced SPWM technology and outputs pure sine wave to convert DC into AC. It is ideal for AC loads such as household appliances, power tools, industrial equipment, and electronic audio and video equipment. The product comes with a segment LCD display design which allows real-time display of the operating data and status of the system. Comprehensive electronic protections keep the entire system safer and more stable. Features: 1. Full digital voltage and current double closed loop control, advanced SPWM technology, pure sine wave output.

2. Two output modes: mains bypass and inverter output; uninterrupted power supply.

3. Available in 4 charging modes: Only Solar, Mains Priority, Solar Priority and Mains & Solar hybrid charging.

4. Advanced MPPT technology with an efficiency of 99%.

5. Designed with a LCD screen and 3 LED indicators for dynamic display of system data and operating status.

6. ON/OFF rocker switch for AC output control.

7. Power saving mode available to reduce no-load loss.

8. Intelligent variable speed fan to efficiently dissipate heat and extend system life.

9. Battery charging using PV solar or AC input, supporting use of lead-acid and lithium battery technologies.

10. 360 ° all-round protection with a number of protection functions.

11. Complete protections, including short circuit protection, over voltage and under voltage protection, overload protection, reverse protection, etc.

5 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual Extirnal Battery packsHome AppliancesUtilityGeneratorOrPV Panel1.2 Basic system introductionThe ﬁgure below shows the system application scenario of this product.A complete system consists of the following parts:1. PV module: Converts light energy into DC power, and charges the battery through the onboard MPPT solar charge controller, or to directly drive the inverter making AC power to drive the loads. (battery-less mode)2. Mains or generator: Connected at the AC input, to power the loads while charging the battery. If the mains or generator is not connected, the system can also operate normally, and the load is powered by the battery and PV array.3. Battery: Provided to ensure normal power supply to the system loads when solar energy is insufﬁcient and the AC Main is not connected.4. Household load: Allow connection of various household and ofﬁce loads, including refrigerators, lamps, TVs, fans and air conditioners.5. MNS Hybrid Inverter: The energy conversion unit of the whole system. Speciﬁc system wiring method depends on the actual application scenario.

6 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual 1.3 Appearance 12346857910111213148 ① AC input port ⑨ Battery port ② AC output port ⑩ ON/OFF rocker switch ③ USB communication port 11 PV port ④ RS485/CAN communication port 12 Touch button ⑤ Dry contact port 13 LED Indicator ⑥ Grounding screw 14 LCD screen ⑦ AC input breaker ⑧ Cooling fan

7 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual  2. Installation Instructions2.1Installation precautionsBe very careful when installing the battery. Wear safety glasses wheninstalling a lead-acid ﬂooded battery. If you come into contact with thebattery acid, rinse with clean water immediately.Do not place metal objects near the battery to prevent short-circuit of thebattery terminals.Hydrogen gas may be generated when the battery is charging. Please ensuregood ventilation.When installing the unit, be sure to leave enough space aroundthe MNS Hybrid Inverter for proper heat dissipation. Do not install theMNS Hybrid Inverter and lead-acid battery(s) in the same cabinet to avoidcorrosion by sulfuric acid gas generated during battery operation.Only batteries that meet the requirements of the MNS Hybrid Inverter canbe charged.Poorly connected connections and corroded wires may cause terminal heatingwhich could melt the wire insulation, burn the surrounding materials, andeven cause ﬁres. So, make sure the terminals have been tightened, andthe wires are secured with ties to avoid loose connections caused by shakingof wires during mobile applications.Avoid mounting in direct sunlight and where rainwater may get insideif mounting outside..Even after the power is turned off, there is still high voltage inside the unit.Do not open or touch the internal components, and avoid related operationsuntil the capacitor completely discharges.Do not install the MNS Hybrid Inverter in harsh environments such asmoist, oily, ﬂammable or explosive, or heavily dusty areas.Do NOT reverse polarity at the battery input terminals, otherwise it maydamage the device and/or cause a ﬁre.The mains AC input and AC output are high voltage, so please do not touchthe wiring terminals.Keep ﬁngers and tools away from the fan, do not touch it to prevent injury.

8 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual 2.2 Wiring speciﬁcations and circuit breaker selection Wiring and installation must comply with national and local electrical codes. Recommended PV array wiring speciﬁcations and circuit breaker selection: Since the output current of the PV array is aﬀected by the type, connection method and illumination angle of the PV module, the minimum wire diameter of the PV array is calculated according to its short-circuit current; refer to the short -circuit current value in the PV module speciﬁcation (the short-circuit current is constant when the PV modules are connected in series; the short-circuit current is the sum of the short-circuit currents of all PV modules connected in parallel); the short-

circuit current of the PV array shall not exceed the

maximum input current. ➣ Refer to the table below for PV input wire diameter and switch: Models Maximum PV Note: The series string voltage shall not exceed the maximum PV input open circuit voltage. Recommended circuit breakermodel numberMN3024DIY8 AWG40AMNEDC40 or MNEPV40RecommendedPV wire size

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➣

Refer to the table below for recommended AC input wire diameter and switch: ➣ Recommended battery input wire diameter and switch selection

Model

RecommendedAC Input WiringDiameter

Maximum bypassinput current

Recommendedcircuit breakertype

MN3024DIY

8 AWG

40A

MNEAC40

Model

Recommended battery wiring diameter

Rated battery discharge current

Maximum charge current

Recommended circuit breaker type

MN3024DIY

2 AWG

125A

100A

MNEDC125

MNDC125 sold separately· A convenient clean box for DC breakers.· Comes with MNDC125 inverter battery breaker.· Can also hold up to ﬁve dinrail breakers.· Mounting for shunt· ETL listed for the USA and Canada· Bonded battery/inverter negative tie point· Equipment ground bus bar· compliment of conduit knock outsDimensions: 17"H x 9"W x 3.5"D

10 of 3910-527-1 MN3024DIY REV AMN3024DIYUser Manual ➣ Recommended AC output wiring speciﬁcations and circuit breaker selection Models Recommended AC output wiring diameter Rated inverter AC output Maximum bypass output current Recommended circuit breaker type MN3024DIY 8mm2/8AWG 25A 40A 2P—63A Note: The wire gauge is for reference only. If the distance between the PV array and theMNS Hybrid Inverter or the distance between the MNS Hybrid Inverter and the batteryis relatively long, using a bigger gauge wire can reduce the voltage drop to improvesystem performance.Note: The above are only recommended wire gauge and circuit breaker. Please selectthe appropriate wire gauge and circuit breaker according to actual installation requirements. Note: Breakers are there to protect the wire not the electronics. Select wire size for theapplication, and then select breakers for the wire size.All MidNite Solar breakers are rated for continuous duty.

Max Current Wire gauge and breaker size Recommended MidNite Breaker 20 Amps 12 AWG – 20 Amp Breaker MNEDC20 MNEPV20 25 Amps 10 AWG – 30 Amp Breaker MNEDC30 MNEPV30 30 Amps 10 AWG – 30 Amp Breaker MNEDC30 MNEPV30 40 Amps 8 AWG – 50 Amp Breaker MNEDC40 MNEPV40 50 Amps 8 AWG – 50 Amp Breaker MNEDC50 MNEPV50 60 Amps 6 AWG – 60 Amp Breaker MNEDC60 MNEPV60 125 Amps 2 AWG – 125 Amp Breaker MNEDC125 -

Recommended wire gauge and breaker size.MNEPV Breakers are dinrail mount and ﬁt in the MNDC125 enclosure.MNEPV Breakers are dinrail mount and ﬁt in the MNDC125 enclosure.