Sofar ME3000SP User manual

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Energy Storage Inverter ME3000SP
User Manual
2018-3-6
V1.7 (For ME3000SP firmware V1.7 or newer)

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Contents
1. ME3000SP Introduction...........................................................................................................................................4
2. Safety Notes.............................................................................................................................................................5
2.1 Safety Notes.............................................................................................................................................5
2.2 Installation and Maintenance Notes........................................................................................................5
3. Installation ...............................................................................................................................................................7
3.1 Product Overview ....................................................................................................................................7
3.2 Packing List ..............................................................................................................................................8
3.3 Installation Environment .........................................................................................................................9
3.4 Installation Tools ......................................................................................................................................9
3.5 Installation Position ...............................................................................................................................10
3.6 Mount ME3000SP..................................................................................................................................11
4. Electrical Connection.............................................................................................................................................13
4.1 Battery Connection................................................................................................................................14
4.2 CT / RS485 / NTC connection.................................................................................................................14
4.3 Grid Connection.....................................................................................................................................17
4.4 Critical Load Connection (EPS function) ................................................................................................18
5. Buttons and indicator lights...................................................................................................................................19
5.1 Buttons: .................................................................................................................................................19
5.2 Indicator lights: ......................................................................................................................................19
5.3 Status of ME3000SP...............................................................................................................................20
6. Operation...............................................................................................................................................................21
6.1 Double Check.........................................................................................................................................21
6.2 First Time Setup (IMPORTANT!).............................................................................................................21
6.3 Commissioning ......................................................................................................................................25
6.4 Menu .....................................................................................................................................................26

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6.4.1 Enter setting: .........................................................................................................................................26
6.4.2 Event List................................................................................................................................................34
6.4.3 System information interface ................................................................................................................35
6.4.4 Software upgrade ..................................................................................................................................36
6.4.5 Energy Statistic：..................................................................................................................................37
7. Technical Data........................................................................................................................................................38
8. Troubleshooting.....................................................................................................................................................40

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1. ME3000SP Introduction
ME3000SP is an AC coupled bi-directional battery converter. Customers can purchase batteries & ME3000SP as
an energy storage add-on to his/her existing renewable energy system. ME3000SP helps to achieve optimal usage of
renewable energy. ME3000SP controls bi-directional flow of electric power, work under auto or time-of-use (TOU)
modes, charge / discharge the battery when needed.
In auto mode, ME3000SP will charge surplus renewable energy into the battery & discharge battery to supply
power to local load when renewable energy is not enough.
Fig. 1 ME3000SP schematic diagram

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2. Safety Notes
Before installation, please make sure you read & understand this manual. ME3000SP strictly comply with safety
rules of design and testing. During the installation, operation and maintenance, operators should abide by local safety
regulations. Improper operation may cause an electric shock or damage the equipment and properties.
2.1 Safety Notes
Electrical installation and maintenance must be carried out by competent electricians according to local
regulations.
ME3000SP can only be installed by qualified electrician, and only those who have appropriate accreditation, as
required by local authority.
Do NOT put explosives or flammable materials, e.g. gasoline, kerosene, oil, wood slab, cotton, or rag close to
batteries / ME3000SP.
Disconnect DC (battery) & AC (grid & load) first, then wait at least 5 minutes (discharge capacitors) before
maintenance to prevent electric shock.
ME3000SP shall be disconnected completely (DC & AC) while being maintained.
ME3000SP can be very hot while working. Switch off ME3000SP & wait ME3000SP to cool down before
maintenance.
Keep children away from batteries & ME3000SP.
It’s not allowed to open the front cover of ME3000SP. This will void the product warranty.
ME3000SP damaged by improper installation/operation is not covered by the product warranty.
2.2 Installation and Maintenance Notes
The battery has been ~ 60% charged before being delivered and shall be prevented from short circuit during
transportation and installation.
ME3000SP/batteries shall be placed in a well-ventilated place. Do not put the ME3000SP/batteries in an airtight
or badly ventilated place or cabinet. This can be very harmful to system performance & system service life.
Keep ME3000SP/batteries away from direct sunshine. Don’t put ME3000SP/batteries close to a furnace or fire.

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The can lead battery to leak even explode.
The current capacity of DC power cables (from battery to inverter) should be at least 90A. Use short power cables
to avoid high voltage drop & power loss.
Use a multimeter to check the batter voltage & polarity before switching ON batteries. Make sure connections
are correct according to this manual.
If you want to store the batteries without using them, they should be disconnected from ME3000SP, and be kept
in a cool, dry, and ventilated environment.
Battery maintenance operators shall have the knowledge and technical skill for battery maintenance;
All batteries connected in parallel should be of the same model, and have same firmware version. This is a design
issue needs to be considered by designer/installer, particularly when replacing batteries or modifying an existing
energy storage system.
Warning: Do not disassemble or break the battery. Its electrolyte can be toxic and damage your skin and eyes.
Warning: follow the following rules during battery installation/maintenance.
a) Take off your watch, ring, and other metal objects.
b) Only use tools with insulated handles.
c) Wear rubber gloves and shoes.
d) Do not put tools or metals above the battery.
e) Switch off ME3000SP & batteries before connecting / disconnecting battery terminals.
f) Battery positive / negative poles should be isolated from ground.

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3. Installation
3.1 Product Overview
ME3000SP is 100% strictly inspected before package and delivery. It is forbidden to put ME3000SP upside down
during delivery.
Please check the product package and fittings carefully before installation.

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Fig. 2 ME3000SP & mounting bracket
3.2 Packing List
Inspect the package and fittings carefully before installation. You should have the following fittings:
Mounting Bracket × 1
AC terminal × 6
M5 screw × 2 Battery terminal × 2
M6 flat washer × 8
Expansion Bolts × 8
Terminal cap × 4
CT terminal × 2
Current Transformer × 2
User Manual × 1
Warranty card × 1 Quality Certificate × 1

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Communication cable × 1
Fig. 3 Accessories of ME3000SP
3.3 Installation Environment
Choose a dry, clean, and tidy place, convenient for installation
Ambient temperature range: -25C ~ 60C
Relative humidity: 0 ~ 100% (non-condensed)
ME3000SP shall be installed in a well-ventilated place
No flammable or explosive materials close to ME3000SP
ME3000SP shall be connected to the electrical grid with an overvoltage category III or category II
Maximum altitude: 2000m
3.4 Installation Tools
The following tools shall be prepared before installation:
No. Tool Model Function
1
Hammer drill
Recommend drill dia.6mm Used to drill holes on the wall
2 Screwdriver wiring
3 Wire stripper Strip wire

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4 4mm Allen Key Turn the screw to connect rear panel
with inverter
5 Crimping tools Used to crimp power cables
6 Multi-meter Used to check grounding
7 Marker pen Used to mark signs
8 Measuring tape Used to measure distances
9 Level Used to ensure that the rear panel is
properly installed
10 ESD gloves Operators wear
11 Safety goggles Operators wear
12 Anti-dust respirator Operators wear
3.5 Installation Position
ME3000SP should be vertically mounted (to ensure fast heat dissipation), please choose a position without direct
sunlight / snow accumulation to install ME3000SP.

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Fig. 4 Installation Position of ME3000SP
3.6 Mount ME3000SP
Step 1: Put the mounting bracket properly on the wall, mark these 8 drill holes using a marker pen. Drill 8 holes (drill
bit 6mm) on the wall.
Step 2: Insert the expansion screw vertically into the hole, note the insertion depth. (not too shallow or too deep)
Step 3: Fix the mounting bracket on the wall using bolts & flat washers.
Step 4: Put ME3000SP on the mounting bracket.
Step 5: Earth ME3000SP using the grounding hole on the heat sink.
Step 6: OPTIONAL: you can lock ME 3000SP to the mounting bracket.

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Step 5 Step 6

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4. Electrical Connection
Be aware of electric shock and chemical hazards!
Use a multi-meter to check the DC polarity before connecting the DC power cable between battery & ME3000SP.
It’s recommended to install a rotary DC isolator (100A) between ME3000SP and batteries. Thus, ME3000SP can
be securely disconnected during installation/maintenance.
It’s necessary to install a AC circuit breaker (25A) between ME3000SP and electrical grid.
It is very important for system safety and efficient operation to use appropriate cable for electrical connection.
Battery connection: AWG8 or AWG6 cable.
Grid & Load connection: AWG12 cable.
Make sure N wire is connected to PE wire while EPS (Emergency Power Supply) mode is enabled.
Fig. 5 Wiring Schematic of Single Phase System

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4.1 Battery Connection
Fig. 6 Battery connection (Test battery wires polarity before connection)
Step 1: Loosen 4 screws (A) using a screwdriver (fig. 6);
Step 2: Remove the waterproof cover (B), loosen the cable gland (C), and then remove the stopper (G);
Step 3: Route the battery wires (F) through the cable gland, then connect battery wires using OT terminal (E);
Step 4: Fasten the waterproof cover using 4 screws.
4.2 CT / RS485 / NTC connection

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Fig. 7 Schematic Diagram (ME 3000SP: energy storage add-on to existing renewable system)
Step 1: Location of CTa: L wire of incoming mains. Location of CTpv: L wire of PV inverter’s output.
Step 2: Use network cable & terminal caps to extend CT wires.
Fig. 8 CT wire extension
CT wire
Extension cable (network cable)
ME 3000SP
Red
Orange / white orange / brown / white brown
CT+
Black
Green / white green / blue / white blue
CT-

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Fig. 9 CT / RS485 / NTC connection
Step 3: Loosen 4 screws (part A) using a screwdriver (fig. 9)
Step 4: Remove the waterproof cover (part B), loosen the cable gland (part C), then remove the stopper (part G)
Step 5: Route CT cable through the cable gland, connect CT cable to CT terminal, then insert CT terminal into
corresponding ports.
Step 6: one communication cable is provided in the ME3000SP accessory bag. One inverter end, one BAT end.
Route the communication cable (inverter end) through the cable gland, insert the 4P4C connector to ME3000SP CAN
port. Insert the 8P8C connector (BAT end) to PYLONTECH battery CAN port.
Communication cable between battery & ME3000SP
CAN communication
ME3000SP
CAN port
PYLONTECH US2000 PLUS / US2000B
CAN port
Note: Please confirm with representative of PYLONTECH
that your battery is compatible with ME3000SP

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Step 7: Connect NTC for lead acid batteries only:
Fig. 10 NTC connection
Step 7: fasten the waterproof cover using 4 screws.
4.3 Grid Connection
For most customers, please ONLY connect GRID port & leave LOAD port
unconnected.
Unless you need the EPS (Emergency Power Supply) function.
Step 1: Loosen 4 screws (part A) using a screwdriver (fig. 11)
Step 2: Remove the waterproof cover (part B), loosen the cable gland (part C),
then remove the stopper (part G)
Step 3: Route a 3-core cable through GRID cable gland, then connect 3 wires to
corresponding terminal blocks. (BROWN – L, BLUE – N, YELLOW/GREEN – PE)
Step 4: Fasten the waterproof cover using 4 screws.
Fig. 11 Grid & Load connection

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4.4 Critical Load Connection (EPS function)
Critical load: in case of grid outage, if EPS function is enabled, ME 3000SP will work in EPS (Emergency Power Supply)
mode, discharge the battery & supply power to critical load via LOAD port.
LOAD port is only for critical load connection. Please make sure you’ve purchased the AC contactor from Shenzhen
SOFARSOLAR Co., Ltd.
The connection procedure of LOAD port is the same as grid connection (Fig. 11).
Fig. 12 AC contactor front view, top view, and connection
Fig. 13 Critical load connection (AC contactor: 2 NC, 2 NO)

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5. Buttons and indicator lights
Discharging Status Light
Charging Status Light
Alarm Light
Back Up Down OK
Fig 14. Buttons and indicator lights
5.1 Buttons:
press “Back” to the previous screen or enter the main interface;
press “Up” to the upper menu option or value plus 1;
press “Down” to the lower menu option or value minus 1;
Press “OK” to select the current menu option or switch to the next digit.
5.2 Indicator lights:
Discharging status Light（Green）
Discharging light ON: discharging the battery
Charging status Light（Green）
Charging light ON: charging the battery
Alarm light（Red）
Alarm light ON: there’re some events in current event list.

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5.3 Status of ME3000SP
Status of ME3000SP
Discharging Green light
Charging Green light
Alarm Red light
Discharge
ON
Check discharge
Flashing
Charge
ON
Check charge
Flashing
Standby
Flashing
Flashing
EPS state
ON
ON
Some events in
current event list
ON