LK MS-RE Series User manual

MS-RE Solar Inverter
User Manual
MS-RE 1 and MS-RE 2

2
MS-RE Solar Inverter
The MS-RE Solar Inverter range, is designed for locations having unreliable or limited access to electricity, to provide a reliable and a󰀨ordable energy
access solution. It is designed to supply continuous energy from solar and grid based on availability.
The Inverter is customized to prioritize solar energy over grid supply. This helps to extract maximum energy from solar making it a sustainable energy
access solution for homes, micro enterprises, health centers, schools, and o󰀩ces.
Do’s and Don’ts
MS-RE Solar Inverter
Battery
b Switch OFF and unplug the MS-RE Solar Inverter before touching
or cleaning the surface.
b Unplug the MS-RE Solar Inverter from the wall outlet during
lightning storm.
b Do not block the side ventilation slots by cloth or other material; it
may result in re hazard.
b Do not place the MS-RE Solar Inverter near heat radiation or heat
source.
b Do not install the MS-RE Solar Inverter near kitchen sink, laundry, wash
bowl and bathtub.
b Wear safety gloves and goggles.
b Use only battery grade water for battery relling.
b Install the battery in proper ventilated area.
b Apply petroleum jelly to terminals of the battery.
b Place battery horizontally and handle with care.
b Keep out of reach of children.
b Connect correct polarity of wires from MS-RE Solar Inverter to the
battery.
b Do not use impure or mineral water for battery relling.
b Do not add acid to the battery as it can damage the battery.
b Do not place the battery in the vicinity of water source or under direct
sunlight.
b Do not leave the battery's cell caps open.
b Do not increase the length of the battery wire.
b Do not place the battery at a height.
b Never short the terminals of the battery.
b Do not over ll the battery cells.
b Keep ammable substance away from the battery.
b Do not dispose the batteries in re.
b Do not open or mutilate the batteries.
b Do not keep tools or metal parts on the top surface of the battery.
For optimal Inverter usage, consider the following battery recommendations:

3
Description LED ON LED Blinking
1. ON/OFF SWITCH - -
2. MAINS ON Mains available -
3. SOLAR CHARGING Solar power available Charging through solar panel
4. MAINS CHARGING Battery charging through mains -
5. POWER SAVER Power saver is active -
6. BATTERY LOW Battery low trip Battery low pre-alarm
7. OVER LOAD Over load trip Over load alarm (slow blink), Short circuit (fast blink)
8. SYSTEM ON Inverter activated -
Front Panel Description: MS-RE 1
MS-RE Solar Inverter
1. ON-OFF SWITCH
Press and hold for 2 seconds for the device ON/OFF function.
2. MAINS ON
Indicates mains status.
3. SOLAR CHARGING
Indicates charging through solar panel.
4. MAINS CHARGING
Indicates charging through mains.
5. POWER SAVER
Indicates the power saver mode status.
6. BATTERY LOW
Indicates low battery status.
7. OVER LOAD
Indicates overload condition.
8. SYSTEM ON
Indicates inverter status.
9. QR CODE
Scan QR code for more product details
LED Indication
21
345 7
68
876
2 3 541
ON-OFF
SWITCH
SOLAR
CHARGING
MAINS
CHARGING
SYSTEM
ON
BATTERY
LOW
MAINS
ON
POWER
SAVER
QR CodeOVER
LOAD
9
9

4
Front Panel Description: MS-RE 2
1. ON-OFF SWITCH
Press and hold for 2 seconds for the device ON/OFF function and the backlight ON/OFF function.
2. LCD DISPLAY
Displays the various parameters on the LCD screen.
3. SAVE
Press to save the settings.
4. UP
Switch to change the value.
5. OK
Press to enter the selected setting.
6. QR Code
Scan QR code for more product details.
MS-RE Solar Inverter
2
3 54
1
ON-OFF
SWITCH
OKUP
LCD
DISPLAY
SAVE QR Code
6
21
3
4
56

5
To change the settings using LCD and switches:
1. Press OK and UP at the same time for 1 second to enter settings.
2. Use UP switch to navigate to the required setting.
3. Press OK to view the parameter setting options.
4. Use UP switch to scroll to the required option.
5. Press Save to conrm the option.
6. Press Save again to save the settings.
7. Press OK and UP at the same time for 1 second to exit settings.
Conguration Settings: MS-RE 2
CONFIG SETTING
SAVED
CONFIG SETTING
MODE->Solar-Grid
CONFIG SETTING
MODE->Grid-Solar
CONFIG SETTING
CONFIG SETTING
SAVED
Press and hold for 1 second
CONFIG SETTING
MODE:: Solar-Grid
CONFIG SETTING
CONFIG SETTING
CONFIG SETTING
CONFIG SETTING
Select the preferred mode
CONFIG SETTING
NL SHUTDN:: XXX
CONFIG SETTING
CONFIG SETTING
CONFIG SETTING
SAVED
Select the preferred battery type
Select the preferred no load shutdown setting
BATT: :TUBULAR
MODE->Solar
BATT->TUBULAR
BATT->FLAT
BATT->GEL/VRLA
NL SHUTDN->DIS
NL SHUTDN->EN
MS-RE Solar Inverter
Battery
Grid input voltage
Ampere
Solar power
Cumulative solar energy
Selected charging mode
(Solar-Grid)
No load shutdown
AC output voltage
ON-OFF switch
Load percentage
Output AC frequency
Grid input fail
BATT:
I/P V:
A:
PV POWER:
CUM KWh:
SOL-GRID:
NL SHUTDN:
O/P V:
SW:
LD %:
FRQ:
FL:

6
HOMAYA SOLAR HYBRID SYSTEM
4
5
1
6
7
8
DC BATTERY INPUT - 12 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
MODEL NO.
S.NO.
AC INPUT
230V~50Hz
AC OUTPUT
FUS
PV
PANEL 12V
3
2
Back Panel Description: MS-RE 1
1. Mains Fuse
Connects to the input of the MS-RE Solar Inverter.
NOTE: In Mains mode, this fuse trips in case of short-circuit or overload at the output.
2. Universal Output Socket
Connects load through solar inverter.
3. Mains Input Cable (Input 230 V~ 50 Hz)
Connects input AC supply (the commercial supply) to the solar inverter.
4. Positive Battery Lead
Connects to the positive terminal of the battery.
5. Negative Battery Lead
Connects to the negative terminal of the battery.
6. Battery Type Selection Switch
Select the battery type (Tubular/Flat/Gel or VRLA) connected to the solar inverter.
7. Mode Selection Switch
Select the battery charging current prole (Solar/Solar+Grid/Grid+Solar). Refer to the technical specication section.
8. Terminal Block - PV Input
Connects to the PV panel input.
NOTE: Ensure the connections are as per the polarity markings and the screws tightened.
MS-RE Solar Inverter

7
5
1
3
6
4
2
DC BATTERY INPUT - 24 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
PV
PANEL 24V
AC OUTPUT
ON
AC MCB
AC INPUT
230V~50Hz
MODEL NO.
S.NO.
Back Panel Description: MS-RE 2
1. Mains input Cable (Input 230 V~ 50 Hz)
Connects input AC supply (the commercial supply) to the solar inverter.
2. AC Miniature Circuit Breaker
Connects to input of the Mains.
NOTE: In Mains mode, this breaker trips in case of short-circuit or overload at the output.
3. Universal Output Socket
Connects load through solar inverter.
4. Terminal Block - PV Input
Connects to the PV panel input.
NOTE: Ensure the connections are as per the polarity markings and the screws tightened.
5. Negative Battery Lead
Connects to the negative terminal of the battery.
6. Positive Battery Lead
Connects to the positive terminal of the battery.
MS-RE Solar Inverter

8
MS-RE Solar Inverter
Display Parameter: MS-RE 2
Power On Screen
UPS Mode Screen Loop
Mains Mode Screen Loop
Screen 1
Screen 2 Screen 3
Screen 4
Screen 5Screen 6
BATT V: XX.XX
I/P: XXX
SOLAR: XXX
A: XXX.X
PV POWER: XXXXW
CUM KWh: XXX.X
SYSTEM SETTING
SOL-GRID TUBULAR
NL SHUTDN: XX
POWER SAVER: XXX
O/P V: XXX SW XXX
LD%: XXX FRQ: XX.X
Screen 1
Screen 2 Screen 3
Screen 4
Screen 5Screen 6
BATT V: XX.XX
I/P: XXX
SOLAR: XXX
A: XXX.X
PV POWER: XXXXW
CUM KWh: XXX.X
SYSTEM SETTING
SOL-GRID TUBULAR
NL SHUTDN: XX
POWER SAVER: XXX
I/P V: XXX SW XXX
CHG: XXX FRQ: XX.X
S/W VERSION
V:X.X
Battery
Grid input voltage
Ampere
Solar power
Cumulative solar energy
Selected charging mode
(Solar-Grid)
No load shutdown
AC output voltage
ON-OFF switch
Load percentage
Output AC frequency
Grid input fail
BATT:
I/P V:
A:
PV POWER:
CUM KWh:
SOL-GRID:
NL SHUTDN:
O/P V:
SW:
LD %:
FRQ:
FL:

9
MS-RE Solar Inverter
Solar Generation History
Long press till you here a beep
Press to view the solar power generation
history of day 2–day 7
PV POWER: XXXXW
CUM KWh: XXX.X
Long press till the beep sound comes
to an exit
Press to exit solar power generation
PV POWER: XXXXW
CUM KWh: XXX.X
Press to select screen 4 from the loop
SOLAR HISTORY
DAY1: 0.00 Kwh
SOLAR HISTORY
DAY3: 0.00 Kwh
SOLAR HISTORY
DAY7: 0.00 Kwh
Screen 2
BATT V: XX.XX
I/P: XXX
Screen 3
SOLAR: XXX
A: XXX.X
Screen 4
PV POWER: XXXXW
CUM KWh: XXX.X
Screen 6
NL SHUTDN:XX
POWER SAVER:XXX
Screen 1
Screen 5
SYSTEM SETTING
SOL-GRID TUBULAR
Battery
Grid input voltage
Ampere
Solar power
Cumulative solar energy
Selected charging mode
(Solar-Grid)
No load shutdown
AC output voltage
ON-OFF switch
Load percentage
Output AC frequency
Grid input fail
BATT:
I/P V:
A:
PV POWER:
CUM KWh:
SOL-GRID:
NL SHUTDN:
O/P V:
SW:
LD %:
FRQ:
FL:

10
MS-RE Solar Inverter
Packaging Contents and Product Dimensions
MS-RE 1 Solar inverter
x1
Warranty card
Spare fuse (10 A)
x1
x1
x
1
MS-RE 2 Solar inverter
x1
Warranty card
x1
Battery Jointer Cable
x1
x
1
NOTE: Battery, solar panel and AC input socket are not included in the package.
Unpacking and Placement
On receiving the MS-RE Solar Inverter, unpack the inverter and check for physical damages that may have occurred to the inverter during transport.
Also, ensure the warranty card is available in the package.
After unpacking the MS-RE Solar Inverter, ensure:
Place the MS-RE Solar Inverter in an area that is protected from dust, water, heat, humidity, and away from ammable objects. Avoid inclined
planes for installation.
MS-RE 1 Solar Inverter
MS-RE 2 Solar Inverter
BATTERY
LOW
OVER
LOAD
POWER
SAVER
MAINS
CHARGING
SOLAR
CHARGING
MAINS
ON MS - RE 1
320 mm
302 mm
(313 mm)
12 mm
130 mm
(138 mm)
8 mm
OK UP SAVE MS - RE 2
320 mm
302 mm
(322 mm)
151 mm
(165 mm)
14 mm
21 mm
• The mains power input cable of the solar inverter is xed by a LTLK approved installer.
• The battery connector cables from the solar inverter is xed by a LTLK approved installer.
• The date of installation and seal of the installer is mentioned on the warranty card.

11
Product Typical Installation: MS-RE 1
Product Typical Installation: MS-RE 2
DC BATTERY INPUT - 12 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
MODEL NO.
S.NO.
AC INPUT
230V~50Hz
AC OUTPUT
FUS
PV
PANEL 12V
ON
OFF
12 V (1x12 V)
80Ah to 200 Ah
12 V PV Panel up to 850 Wp
ON
OFF
DC BATTERY INPUT - 24 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
PV
PANEL 24V
AC OUTPUT
ON
AC MCB
AC INPUT
230V~50Hz
MODEL NO.
S.NO.
24 V (2x12 V)
80Ah to 200 Ah
24 V PV Panel up to 1500 Wp
MS-RE Solar Inverter

12
Battery connection with MS-RE 1 Solar Inverter
Battery connection with MS-RE 2 Solar Inverter
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Follow safe electrical work practices while connecting the battery cable to the battery post to avoid short circuit.
• Battery terminals and thimble has to be cleaned and correctly fastened to avoid false indications of battery charge, and low battery trips.
Failure to follow these instructions will result in death or serious injury.
DANGER
NOTE
Battery connections should be performed by qualied personnel with appropriate training. No responsibility is assumed by LTLK for
consequences arising due to noncompliance.
Battery Installation
MS-RE Solar Inverter
Installation Diagrams
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Ensure correct polarity of batteries are connected to the terminals.
Failure to follow these instructions will result in death or serious injury.
DANGER

13
HOMAYA SOLAR HYBRID SYSTEM
MS-RE Solar Inverter
Connection Diagram with Grid supply for MS-RE 2 Solar Inverter
DC BATTERY INPUT - 24 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
PV
PANEL 24V
AC OUTPUT
ON
AC MCB
AC INPUT
230V~50Hz
MODEL NO.
S.NO.
Mains Input
Supply
Input Grid
Supply
Earth Terminal N
E N
LNeutral
Terminal
Load Connection (should not be greater than system capacity)
24V (2 x 12V)
80Ah to 200Ah
Load 1 Load 2 Load 3 Load 4
Load N
Distribution Box
E
LN
Connection Diagram with Grid supply for MS-RE 1 Solar Inverter
DC BATTERY INPUT - 12 V
CAUTION: ENSURE CORRECT TERMINALS OF BATTERY
MADE IN INDIA
MODEL NO.
S.NO.
AC INPUT
230V~50Hz
AC OUTPUT
FUSE
PV
PANEL 12V
N
E N
L
Load Connection (should not be greater than system capacity)
Mains Input
Supply
E
LN
Input Grid
Supply
Load 1
Earth Terminal
E N
Neutral
Terminal
12 V (1x12 V)
80Ah to 200 Ah
Load 2 Load 3 Load 4
Load N
Distribution Box

14
MS-RE Solar Inverter
• Switch OFF the power supply to the distribution point where the MS-RE Solar Inverter has to be connected.
• Check the building wiring.
NOTE: Improper wiring may not prevent the MS-RE Solar Inverter from operating but may limit its protection capability. Also, improper building
wiring may result in equipment damage that is not covered under warranty.
• Connect the battery/batteries to the inverter as per the polarity.
• Switch ON the front switch and measure the output voltage at the output socket to ensure it is as per the specication and switch OFF the
MS-RE Solar Inverter.
• Connect the load wire to the line point (right hole) of the output plug and insert the output plug into the socket located on the rear panel of
inverter.
• Switch ON the front switch of the MS-RE Solar Inverter.
• Gradually apply load on MS-RE Solar Inverter.
• Connect input wires to the commercial mains socket.
NOTE:
Recongure the battery type and mode selection whenever the battery is disconnected and reconnected.
Installation Steps

15
MS-RE Solar Inverter
"Northern Hemisphere" "Southern Hemisphere"
Panel stand mounting hole
West East
South
Panel stand mounting hole
East West
North
Always Keep in Mind for Best Performance and Safety
Panel direction True south
Panel angle tilt As per site latitude
Panel to inverter wire length Up to 10 meters
Panel installation area Outdoor without any shadow
Panel maintenance Regular washing with clean water
Battery installation area Well ventilated, away from ame
Panel Wire Size
500 Wp panel of 12 V 6 sq. mm
850 Wp panel of 12 V 10 sq. mm
1100 Wp panel of 24 V 6 sq. mm - 10 sq. mm
1500 Wp panel of 24 V 10 sq. mm - up to 16 sq. mm
Recommended Solar Panel Mounting Orientation
Solar Panel and Battery Selection Chart
Inverter Model Solar Panel Battery Approx. Roof Top
Area Required (Sq. ft)
Wp Conguration Ah Conguration
MS-RE 1 105Wp * 2 No. 2 in parallel 100Ah * 1 No. - 25
170Wp * 2 No. 2 in parallel 150Ah * 1 No. - 35
170Wp * 3 No. 3 in parallel 200Ah * 1 No. - 50
105Wp * 4 No. 4 in parallel 40
MS-RE 2 300Wp * 2 No. 2 in parallel 100Ah * 2 No. 2 in Series 60
330Wp * 2 No. 2 in parallel 150Ah * 2 No. 2 in Series 70
330Wp * 3 No. 3 in parallel 200Ah * 2 No. 2 in Series 100
Minimum recommended conguration, user can customize within the specied maximum limit depending on energy needs and local availability
of solar panel and battery.
NOTE:

16
Power Flow Diagrams for MS-RE 1 Solar Inverter
Solar Mode
Solar + Grid Mode
<=11.5 V **
Mode : SOLAR
Power Saver
- OFF
PV Module
PV Module
<=12.8V & solar is not available for 12hrs.
Mode : SOLAR
Power Saver -
OFF
PV Module
PV Module
Mains Charging - ON
Mode : SOLAR
Power Saver -
OFF
Mains Charging - OFF
PV Module
PV Module
**In case of a tubular battery under power saver OFF condition, battery is less than or equal to 11.0 V.
>=13.5V
Mode : SOLAR
Power Saver
- ON
PV Module
PV Module
>=12.0V = Float
PV Module PV Module
>=5A >=20A
OR OR
10A
<=11.5 V **
Mode : SOLAR + GRID
Power Saver - OFF
PV Module
PV Module
Mode : SOLAR + GRID
Power Saver - OFF
PV Module
PV Module
Mains Charging - OFF
<=12.2V
PV Module PV Module
>=5A <=5A
OR &&
>=13V
PV Module
>=5A
>=10A
OR
PV Module
**In case of a tubular battery under power saver OFF condition, battery is less than or equal to 11.0 V.
MS-RE Solar Inverter

17
>=13.5V
Mode : SOLAR + GRID
Power Saver - ON
PV Module
PV Module
>=14.0V = Float
PV Module PV Module
>=10A >=5A
OR OR
Mode : SOLAR + GRID
Power Saver - OFF
Mains Charger RESTORE
PV Module
PV Module
<=12.5V
<5A
PV Module
&
Grid + Solar Mode
Mode : GRID + SOLAR
No Power Saver
PV Module
PV Module
Mode : GRID+ SOLAR
No Power Saver
PV Module
PV Module
Mains Charging OFF
>=13.5V
PV Module
>=10A
>=15A
OR
PV Module
Mode : GRID + SOLAR
No Power Saver
Mains Charger RESTORE
PV Module
PV Module
<5A
PV Module
MS-RE Solar Inverter

18
Solar + Grid Mode
Grid + Solar Mode
Power Flow Diagrams for MS-RE 2 Solar Inverter
<=23V**
Mode : SOLAR + GRID
Power Saver - OFF
PV Module
PV Module
Mode : SOLAR + GRID
Power Saver - OFF
PV Module
PV Module
Mains Charging - OFF
<=24.4V
PV Module PV Module
>=5A <=5A
OR &&
>=26V
PV Module
>=5A
>=10A
OR
PV Module
Mode : SOLAR + GRID
Power Saver - OFF
Mains Charger RESTORE
PV Module
PV Module
<24V
PV Module
<5A
>=27V
Mode : SOLAR + GRID
Power Saver - ON
PV Module
PV Module
>=28V = Float
PV Module PV Module
>=10A >=5A
OR OR
**In case of a tubular battery under power saver OFF condition, battery is less than or equal to 22.0 V.
Mode : GRID + SOLAR
No Power Saver
PV Module
PV Module
Mode : GRID + SOLAR
No Power Saver
PV Module
PV Module
Mains Charging OFF
>=27V
PV Module
>=10A
>=15A
OR
PV Module
MS-RE Solar Inverter

19
Mode : GRID + SOLAR
No Power Saver
Mains Charger RESTORE
PV Module
PV Module
PV Module
<5A
Solar Mode
<=23 V **
Mode : SOLAR
Power Saver
- OFF
PV Module
PV Module
<=25.4V & solar is not available for 12hrs.
Mode : SOLAR
Power Saver -
OFF
PV Module
PV Module
Mode : SOLAR
Power Saver -
OFF
Mains Charging - OFF
PV Module
PV Module
>=27V
Mode : SOLAR
Power Saver
- ON
PV Module
PV Module
>=24V = Float
PV Module PV Module
>=5A >=20A
OROR
10A
**In case of a tubular battery under power saver OFF condition, battery is less than or equal to 22.0 V.
MS-RE Solar Inverter

20
MS-RE Solar Inverter
Problem Possible Cause (s) Action Recommended
The mains supply is normal but:
b The Mains ON indicator is OFF. The solar
inverter is either working on battery
(Mains ON indicator is
glowing) or battery has exhausted
(Battery Low is glowing).
Line cord plug is not connected correctly. Connect the line cord plug correctly.
Dead wall socket. Check the socket.
Mains input voltage is out of range. Wait for mains to normalize.
The Mains ON indicator is glowing, but no
output is available.
Output plug is not connected correctly. Connect the output plug correctly.
Output relay is not working. Contact your system installer.
No output.
In the battery mode, all indicators are OFF but
the Battery Low LED glows.
The battery is discharged from recent use. Recharge the battery after mains restoration or
by solar during daytime.
The battery connections are disconnected or
corroded.
Check and clean all battery connections.
In the battery mode, all indicators are OFF but
the Over Load LED is ON.
The solar inverter has tripped due to an
overload condition.
Reduce the load and then switch OFF and
switch ON (on the front panel) the inverter once.
Backup not satisfactory with PV connected. PV wire is not connected correctly to the
input terminal.
Connect the PV wires to the correct terminals
with correct polarities as per the markings.
PV panel position is not as recommended. Remount the PV panel with correct angle of tilt
and position.
PV panel rating is not adequate. Contact dealer.
Troubleshooting
MS-RE 1 Solar Inverter
MS-RE 2 Solar Inverter
Problem Possible Cause (s) Action Recommended
The mains supply is normal but:
b The Mains ON indicator does not display
on LCD. The solar inverter is
either working on battery or battery has
exhausted (Battery Low is glowing).
Line cord plug is not connected correctly. Connect the line cord plug correctly.
Dead wall socket. Check the socket.
Mains input voltage is out of range. Wait for mains to normalize.
In the battery mode:
b Display indicates battery low
b Display indicates over temperature
protection
The battery is discharged from recent use. Recharge the battery after mains restoration or
by solar during daytime.
The solar inverter has tripped due to
overheating condition.
Contact your system installer.
b Display indicates overload protection
b Display indicates short circuit
protection
The solar inverter has tripped due to overload
condition.
Reduce the load and then switch OFF and
switch ON (on the front panel) the inverter
once.
The solar inverter has tripped due to short
circuit.
Reduce the loads and then switch the loads
ON one by one.
Contact your system installer if the short circuit
condition persists.
Backup not satisfactory with PV connected. PV wire is not connected correctly to the
input terminal.
Connect the PV wires to the correct terminals
with correct polarities as per the markings.
PV panel position is not as recommended. Remount the PV panel with correct angle of tilt
and position.
PV panel rating is not adequate. Contact dealer.