Energy Storage Inverter
User Manual
(for ME-3000SP)
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Contents
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1. Equipment Introduction
2. Equipment Safety Notes
2.1 Safety Signs
2.2 Safety Notes
2.3 Battery Installation and Maintenance Notes
3. Installation
3.1 Product Overview
3.2 Packing List
3.3 Installation Environment
3.4 Installation Tools
3.4 Installation Position
3.5 Mount ME-3000SP
4. Electrical Connection
4.1 Battery Connection
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4.2 CT / RS485 / NTC connection
4.3 Grid & Load Connection
5. Indicators and Keys
6. Operation
6.1 Double Check
6.2 First Time Setup
7. Technical Data
8. Country Code
9. Troubleshooting
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1. Equipment Introduction
2. Equipment Safety Notes
This product is mainly applied and developed for the adjustable PV generation system and a small power storage
system equipped with the most common lead acid batteries or lithium batteries. It can achieve the optimal usability of
battery power automatically. ME-3000SP storage inverter can control the off-grid, on-grid and the bi-directional flow
of electric power, work under the auto / manual mode and time-of-use (TOU) price mode, automatically switch to the
off-grid and on-grid work mode and manage the battery charge / discharge, etc. Also, the inverter has the intelligent
on-grid discharge function by setting and can adjust its discharge power according to the change of the load power,
avoid the feed of redundant power into the power grid and help the user to make the maximum benefit. This storage
inverter can choose DC bus occasion in connection with the PV system and also be used as a pure off-grid inverter if
there is no PV system. The equipment is equipped with a LCD display panel and keyboard, high-quality Human
Machine Interface and is stable, safe and reliable. The monitoring software has the fault history recording function for
later-stage maintenance.
Before the inverter is used, please read all instructions, warning signs and this manual. The inverter strictly meets
safety rules of design and testing. During the installation, operation and maintenance, operators should abide by
safety regulations. Improper operation may cause an electric shock or damage the equipment and properties.
2.1 Safety Signs
Fig. 1 ME-3000SP Storage System Solution
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2.2 Safety Notes
Electrical installation and maintenance must be carried out by competent electricians according to national
This inverter must be made only by qualified technical personnel, and only after receiving appropriate approvals,
The battery chamber should keep a certain distance with the storage inverter and protected well to prevent from
It is forbidden to place explosives and combustibles, e.g.gasoline, kerosene, oil, slab, cotton and rag, around the
An electric shock must be avoided and the battery input and AC output of the inverter shall be stopped for at
The temperature of some parts of the inverter may exceed 60 ℃. The inverter shall be cooled down in order to
Children should not go near the inverter.
Please do not open the outer cover of the inverter without permission, except for the wire connections. If
Static power may damage electronic elements. An appropriate method should be adopted for preventing from
If the Equipment is damaged because it is not operated according to the operation method of the specified
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connection rules.
as required by the local authority having jurisdiction.
collision.
storage inverter.
least 5min. before its installation or maintenance.
avoid scalding during the maintenance.
someone touches or changes its components without permission, he might be injured and even damage the
inverter.
such damage; otherwise, the inverter might be damage and the warranty will be invalid.
manufacturer, the warranty will be invalid.
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To completely isolate the inverter: firstly shut down the DC switch and then disconnect the battery and the AC
terminal.
The storage inverter shall be isolated conpletely before being maintained. The inverter must not be maintained in
It is forbidden to disconnect the battery terminal and AC terminal when the storage inverter is running normally.
The battery has been charged before being delivered and shall be prevented from short circuit in the
The battery shall be placed in a well-ventilated space. Do not install the battery in airtight or badly ventilated
Do not place the battery in high temperature situations, direct sunshine or in front of a furnace or fire. Otherwise,
The connection cable shall be as short as possible to avoid too much voltage drop.
Before connecting the terminal connecting piece an switching on the battery system, check the total voltage and
If you want to store the battery, the battery bank should be disconnected from the charger and load and the
Battery maintenance operators shall have the know-how and technical skill for the maintenance of the battery;
When the battery is changed, the battery bank of the same model and quantity shall be changed;
Warning: Do not dispose of scrap batteries with fire. Otherwise, the batteries might explore.
Warning: Do not dismantle or damage the battery. Its electrolyte might be toxic and damage your skin and eyes.
Warning: The battery may cause an electric shock or short circuit. Please take the following measures for the
a) Take off your watch, ring or other metal objects.
b) Use the tool with insulated handles.
c) Wear rubber gloves and shoes.
d) Do not put tools and metals above the battery.
e) Switch off the charge power supply before the battery terminal is disconnected.
other modes!
2.3 Battery Installation and Maintenance Notes
transportation and installation process.
spaces or equipment. Otherwise, the equipment might crack.
the battery might leak and fire or crack.
anode and cathode of the battery system to ensure the correct installation.
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environment shall be kept cool, dry and ventilated.
Please be noted that it is not necessary to provide the reservation information with the following exact measures:
battery work:
f) Check if the battery is connected to the ground. If so unconsciously, disconnect the battery from the ground.
Any part that touches the ground battery may suffer an electric shock. Disconnect the battery from the ground
during installation and maintenance, so as to reduce the possibility of such a shock (applicable to the equipment
and remote power supply without power circuits connected to the ground).
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3. Installation
3.1 Product Overview
The inverter is checked strictly and checked before being packed and delivered.It is forbidden to put it upside down
position during delivery.
Please check the product package and internal components carefully before installation, e.g. housing, display and DC
connection terminals.
3.2 Packing List
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have
received the following items inside of package:
Fig. 2 ME-3000SP Overview
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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
Clean and tidy indoors,convenient for installation and in a dry position
Ambient temperature scope:-20℃~45℃
Relative humidity:0~95%(non-condensed)
The storage inverter shall be installed in the place with independent air inlet and outlet channels.
There is neither inflammable nor explosive around.
The storage inverter shall be connected to the power grid with an over-voltage of CATIII and CAT II.
The maximum work altitude is 2000m.
Please consult our engineers about detailed requirements for installation.
3.3 Installation Environment
Fig. 3 Accessories of ME-3000SP
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3.4 Installation Tools
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
4
4mm Allen Wrench
Turn the screw to connect rear panel
with inverter
5
Crimping tools
Used to crimp power cables
6
Multi-meter
Used to check grounding
The following tools shall be prepared before installation:
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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 golves
Operators wear
11
Safey goggles
Operators wear
12
Anti-dust respirator
Operators wear
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3.5 Installation Position
ME-3000SP should be vertically mounted (to ensure fast heat dissipation), please choose a position without direct
sunlight / snow accumulation to install ME-3000SP.
3.6 Mount ME-3000SP
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.
Fig. 4 Installation Position of ME-3000SP
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Step 4: Put ME-3000SP on the mounting bracket.
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Step 5: Earth ME-3000SP using the grounding hole on the heat sink.
Step 6: OPTIONAL: you can lock ME-3000SP
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4. Electrical Connection
Be aware of electric shock and chemical hazards!
Before connecting the battery, ensure the cable connectors have the correct polarity. Reversed polarity will
damage the inverter!
Before connecting to battery, please install a separate DC breaker(100A) between inverter and battery. This will
Before connecting to Grid, please install a separate AC breaker(25A) between inverter and grid.
It is very important for system safety and efficient operation to use appropriate cable for electrical connection.
Battery connection: cable of AWG8 or AWG6.
Load connection: cable of AWG12.
ensure the inverter can be securely disconnected during maintenance.
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Fig. 5 ME-3000SP Bottom View
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4.1 Battery Connection
Fig. 6 Battery connection (Test battery wires polarity before connection)
Step 1: Loosen 4 screws (part A) using a screwdriver (fig. 6)
Step 2: Remove the waterproof cover (part B), loosen the cable gland (part C), then remove the stopper (part G)
Step 3: Route the battery wires (part F) through the cable gland, then connect battery wires using OT terminal (part E)
Step 4: Fasten the waterproof cover using 4 screws.
4.2 CT / RS485 / NTC connection
Fig. 7 Schematic Diagram (ME-3000SP: energy storage add-on to existing renewable system)
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Step 1: Use network cable & terminal cap to extend the CT wire.
CT wire
Extension cable (network cable)
ME-3000SP
Red
Orange / white orange / brown / white brown
CT+
Black
Green / white green / blue / white blue
CT-
GRID
LOAD
Fig. 8 CT wire extension / Direction of CTa
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Fig. 9 CT / RS485 / NTC connection
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insert RJ45 connector into 485M port. (fig. 8)
No.
ME-3000SP 485M
PYLONTECH US2000
1
RS485B
2
RS485A
3
GND
4
RS485B
5
RS485A
6
GND
7
RS485A
8
RS485B
Step 2: Loosen 4 screws (part A) using a screwdriver (fig. 6)
Step 3: Remove the waterproof cover (part B), loosen the cable gland (part C), then remove the stopper (part G)
Step 4: Route CT cable through the cable gland, connect CT cable to CT terminal, then insert CT terminal into
corresponding ports. (Form 1)
Step 5: Route RS485 network cable through the cable gland, connect RS485 network cable to RJ45 connector, then
Form 2 485M connection
Step 6: it’s necessary to connect NTC for lead acid batteries:
Fig. 10 NTC connection
Step 7: fasten the waterproof cover using 4 screws.
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4.3 Grid & Load Connection
Step 1: Loosen 4 screws (part A) using a screwdriver (fig. 9)
Step 2: Remove the waterproof cover (part B), loosen the cable gland (part
C), then remove the stopper (part G)
Step 3: Route GRID / LOAD cables through cable glands, then connect GRID /
LOAD cables to corresponding terminal blocks.
Step 4: Fasten the waterproof cover using 4 screws.
Fig. 11 Grid & Load connection
Fig. 12 Connection of critical load (AC contactor: 2 NC, 2 NO)
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5. Indicators and Keys
press “back“ to the previous screen or enter into the main interface;
press “Up“ to the last interface or value plus 1;
press “Down“entry into the next column or value minus 1 ;
press “OK“ to switch to the next digit.
Charging status Light（Green）
When the system is in the state of charge detection, the LED light flashing;
When the system is in charging, the LED light is permanently on.
When the system is in Fault (fault, or permanet), the LED light goes out.
Dicharging status Light（Green）
When the system is in the state of discharge detection, the LED light flashing;
When the system is in discharging, the LED light is permanently on.
When the system is in Fault (fault, or permanet), the LED light goes out.
Alarm light（Red）
Buttons:
LED lights:
When the system is in Fault (fault, or permanet), the LED light is permanently on.
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6. Operation
6.1 Double Check
Please double check the following before operation.
1. ME-3000SP is firmly fastened to the mounting bracket on the wall
2. The polarity of battery wires is correct, battery wires are firmly connected
3. DC isolator is correctly connected between battery & ME-3000SP, DC isolator: OFF
4. GRID / LOAD cables are firmly / correctly connected
5. AC circuit breaker is correctly connected between ME3000SP GRID port & GRID, AC circuit breaker: OFF
6. AC contactor is correctly connected (fig. 12)
7. For lithium battery, please ensure that the RS485 communication wire have been connected;
8. For the lead-acid battery, please ensure that the NTC wire has been connected.
1)Set system time
2)Set country
3)Select battery type
4)Set battery capacity
5)Set bat manage mode
6)Set max charge voltage
7)Set max Charge current
8)Set max protect voltage
9)Set min discharge voltage
10)Set max discharge current
11)Set min protect voltage
12)Set discharge depth
13)Set discharge time
14)Set empty discharge voltage
15)Set full charge voltage
6.2 First Time Setup
As the storage inverter power-on, it needs to set following parameters before operating.
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1)Setup system time
2)Setup country
3)Setup battery type
4)Setup battery capacity
5)Setup bat manage mode
6)Setup max charge voltage
7)Setup max Charge current
8)Setup max protect voltage
9)Setup min discharge voltage
10)Setup max discharge current
System time’s format is ”Year-Month-Day-Hour-Minutes-Second”, press ”Up&Down” to change the number, press
“Enter” to complete the time setting. When the system setting is complete, then it will turn to “country” setting
automatically.
Press ”Up & Down” to select country, press “Enter” to complete the country setting, then it will turn to “battery type”
setting automatically.
According to you battery, press ”Up&Down” to select the battery type, press “Enter” to complete the battery type
setting, then it will turn to “battery capacity” setting automatically.
According to the capacity of you battery, press ”Up&Down” to select the battery capacity, press “Enter” to complete,
then it will turn to “bat manage mode” setting automatically.
Press ”Up&Down” to select the suitable manage mode for the battery, press “Enter” to complete, then it will turn to
“max charge voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the max charge voltage, press “Enter” to
complete the “max charge voltage” setting, then it will turn to “max Charge current” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the max charge current, press “Enter” to
complete the “max charge current” setting, then it will turn to “max protect voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the max protect voltage, press “Enter” to
complete the “max protect voltage” setting, then it will turn to “min discharge voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the min discharge voltage, press “Enter” to
complete the “min discharge voltage” setting, then it will turn to “max discharge current” setting automatically.
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11)Setup min protect voltage
12)Setup discharge depth
13)Setup discharge time
14)Setup empty discharge voltage
15)Setup full charge voltage
1. Turn OFF the solar inverter. Make sure there’s no power generation in ME-3000SP’s phase.
2. Turn ON DC isolator between battery & ME-3000SP
3. Turn ON AC circuit breaker between ME-3000SP GRID port & GRID.
4. Turn ON some home appliances. Make sure power consumption in ME-3000SP’s phase is greater
5. Turn ON the solar inverter. (power generation > 100W)
6. If power generation > power consumption, battery is not full. ME-3000SP will charge the battery.
7. If power generation < power consumption, battery is not flat. ME-3000SP will discharge the battery.
According to the datasheet of you battery, press ”Up&Down” to input the max discharge current, press “Enter” to
complete the “max discharge current” setting, then it will turn to “min protect voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the min protect voltage, press “Enter” to
complete the “min protect voltage” setting, then it will turn to “discharge depth” setting automatically.
According to the request of the discharge depth, press ”Up&Down” to input the discharge depth, press “Enter” to
complete the “discharge depth” setting, then it will turn to “discharge time” setting automatically.
According to the request of discharge time, press ”Up&Down” to input the discharge time, press “Enter” to complete
the “discharge time” setting, then it will turn to “empty discharge voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the empty discharge voltage, press “Enter” to
complete the “empty discharge voltage” setting, then it will turn to “full charge voltage” setting automatically.
According to the datasheet of you battery, press ”Up&Down” to input the full charge voltage, press “OK” to complete
the “full charge voltage” setting. It will display “Success”, the setting of storage inverter’s first operating is completed
and press “Back”to return main interface. If “Fail” is displayed,the storage inverter should be reset again.
After the completion of the above settings, turn off the storage inverter, then power on the inverter according to the
following steps to complete sensor calibration on the grid and PV :
IMPORTANT: PLEASE FOLLOW THE FOLLOWING PROCEDURE:
ME-3000SP should start to operate now.
than 200W.
You should be able to read the data on the screen.
Every time you change the CT connection, you need to repeat the procedure above.
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7. Technical Data
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8. Country Code
CODE
Country
CODE
Country
00
Germany4105
13
Germany_BDEW
01
CEI021_INT
14
Germany_0126
02
Australia
15
Italy_CEI0_16
03
SpainRD1699
16
UK_G83
04
Turkey
17
Greece_island
05
Denmark
18
EU_EN50438
06
GreeceContinent
19
EU_EN61727
07
Netherland
20
Customer_VDE0126
08
Belgium21Korea
09
UK_G59
22
Sweden
10
China
23
Europe general
11
France
24
CEI021_EXT
12
Poland25Cyprus
9. Troubleshooting
Code
Name
description
solution
ID01
GridOVP
The power grid voltage is
too high
If the alarm occurs occasionally, the possible cause is that
the electric grid is abnormal occasionally. SOFAR inverter
automatically returns to normal operating status when the
electric grid’s back to normal.
If the alarm occurs frequently, check whether the grid
voltage/frequency is within the acceptable range.If no,
contact SOFAR technical support. If yes, check the AC circuit
breaker and AC wiring of the SOFAR inverter.
If the grid voltage/frequency is within the acceptable range
an AC wiring is correct, while the alarm occurs repeatedly,
contact SOFAR technical support to change the grid overvoltage, under-voltage, over-frequency, under-frequency
protection points after obtaining approval from the local
electrical grid operator.
ID02
GridUVP
The power grid voltage is
too low
ID03
GridOFP
The power grid frequency is
too high
ID04
GridUFP
The power grid frequency is
too low
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ID05
BatOVP
The battery voltage is too
high
If the alarm occurs occasionally, the possible cause is
during the process of charging.
If the alarm occurs occasionally, check whether the over
voltage setting of the battery consistent with the
parameter of battery manufacturer and contact SOFAR
technical support.
ID09
HW_LLCBus_OVP
LLCBus voltage is too high,
and has happen hardware
protection
ID09- ID26 are internal faults of SOFAR storage inverter,
turn OFF the ”DC switch”, wait for 5 minutes, then turn ON
the ”DC switch” and turn ON the “AC switch”. Check
whether the fault is rectified. If no, please contact SOFAR
technical support.
ID10
HW_Boost_OVP
Boost voltage is too high,
and has happen hardware
protection
ID11
HwBuckBoostOCP
BuckBoost current is too
high, and has happen
hardware protection
ID12
HwBatOCP
The battery current is too
high, and has happen
hardware protection
ID15
HwAcOCP
The gird current is too high,
and has happen hardware
protection
ID17
HwADFaultIGrid
The grid current sampling
error
ID18
HwADFaultDCI
The DCI sampling error
ID19
HwADFaultVGrid
The grid voltage sampling
error
ID21
MChip_Fault
The master chip fault
ID22
HwAuxPowerFault
The auxiliary voltage error
ID25
LLCBusOVP
LLCBus voltage is too high
ID26
SwBusOVP
Bus voltage is too high, and
has happen software
protection
ID27
BatOCP
Battery current is too high
If the fault occurs frequently, please contact SOFAR
technical support.
ID28
DciOCP
The Dci is too high
ID28-ID55 are internal faults of SOFAR storage inverter, turn
OFF the ”DC switch”, wait for 5 minutes, then turn ON
the ”DC switch” and turn ON the “AC switch”. Check
whether the fault is rectified. If no, please contact SOFAR
technical support.
ID29
SwOCPInstant
The grid current is too high
ID30
BuckOCP
Buck current is too high
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ID31
AcRmsOCP
The output current is too
high
ID49
ConsistentFault_VGrid
The grid voltage sampling
value between the master
DSP and slave DSP is not
consistent
ID50
ConsistentFault_FGrid
The grid frequency sampling
value between the master
DSP and slave DSP is not
consistent
ID51
ConsistentFault_DCI
The Dci sampling value
between the master DSP
and slave DSP is not
consistent
ID53
SpiCommLose
SPI communication is fault
ID54
SciCommLose
SCI communication is fault
ID55
RecoverRelayFail
The relays fault
ID57
OverTempFault_BAT
THe battery temp is too
high
ID57-ID59 Check whether the air condition around the
equipment is good.Or set the “max discharging&charging
current”a little lower to check whether the fault is
rectified.If the fault occurs frequently,please contact SOFAE
technical support.
ID58
OverTempFault_HeatSink
The temperature of
heatsink is too high
ID59
OverTempFault_Env
The environment temp is
too high
ID65
unrecoverHwAcOCP
The grid current is too
high,and has cause
unrecoverable hardware
fault
ID65-ID77 are internal faults of SOFAR storage inverter, turn
OFF the ”DC switch”, wait for 5 minutes, then turn ON
the ”DC switch” and turn ON the “AC switch”. Check
whether the fault is rectified. If no, please contact SOFAE
technical support.
ID66
unrecoverBusOVP
The bus voltage is too
high,and has cause
unrecoverable fault
ID70
unrecoverOCPInstant
The grid current is too
high,and has cause
unrecoverable fault
ID75
unrecoverEEPROM_W
The EEPROM is
unrecoverable
ID76
unrecoverEEPROM_R
The EEPROM is
unrecoverable
ID77
unrecoverRelayFail
Relay has happen
permanent fault
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ID94
Software version is not
consistent
Contact SOFAR technical support to upgrade software.
ID95
CommEEPROMFault
The Communication board
EEPROM is fault
ID95-ID96 are internal faults of SOFAR storage inverter, turn
OFF the ”DC switch”, wait for 5 minutes, then turn ON
the ”DC switch” and turn ON the “AC switch”. Check
whether the fault is rectified. If no, please contact SOFAE
technical support.
ID96
RTCFault
RTC clock chip is fault
ID97
InValidCountry
Invalid Country
Check the country setting according to country ID
ID98
SDfault
The SD card is fault
Please replace the SD card.
ID100
BatOCD
Battery over current
discharging protect
ID100-ID103 are battery fault. If this fault occurs
occasionally, wait few minutes to see whether the fault is
rectified.
If this fault occurs frequently, please contact SOFAR
technical support.
ID101
BatSCD
Discharging short circuit
protect
ID102
BatOV
Battery high voltage protect
ID103
BatUV
Battery low voltage protect
ID104
BatOTD
Battery discharging high
temperature protect
Battery fault. Check whether the air condition around the
equipment is good. Or set the “max discharging&charging
current”a little lower to check whether the fault is rectified.
If the fault occurs frequently, please contact SOFAR
technical support.
ID105
BatOTC
Battery charging high
temperature protect
ID106
BatUTD
Battery discharging Low
temperature protect
Id106-id107 are battery fault. Increase the temperature of
the battery. If the fault occurs frequently, please contact
SOFAR technical support.
ID107
BatUTC
Battery charging Low
temperature protect
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