ASHAPOWER NOVA-40 User manual
USER MANUAL
SOLAR MPPT
CHARGE CONTROLLER
MULTI VOLTAGE RANGE
ISO
CERTIFIED
9001:2015
R
O
HS
COMPLIANT
NOVA-40
I N N OV ATING TOMORROW
12V/24V SELF SETTING
VERS.7.5
NOVA-40 Vers.7.5
SOLAR MPPT CHARGE CONTROLLER
(24V) in series.The device automatically detects and configures itself to the connected battery bank.The high Voc
power point tracking (MPPT) technology of the charge controller optimizes the maximum power production
from the connected PV panel array.
range (open circuit voltage) of the device makes it easier to group the PV panels conveniently.The maximum
SALIENT FEATURES
Compatible for 12V/24V battery bank
Auto-detection and self setting of battery bank
4 stage smart charging for prolonged battery life
(Bulk-Absorption-Float-Equalization)
Programmable Initial limited ampere battery
charging facility
Ultra-fast & efficient power point tracking
(98.9%)
dsPIC33EP family micro controller based devices
PV panel reverse polarity protection
Automatic disconnection of PV panels at night
Over voltage and overload protection from PV panels
Protection for battery against hardware failures
14 menu user programmable function settings and
inbuilt settings keys
Grid power control to the connected inverter
(SMU-Solar Management Unit)
Forced grid to solar shifting facility
SPECIFICATIONS
Nominal Battery Voltage
Maximum Charging Current
Standby Power Consumption
Overload Protection From PV Panel
Over Charge Protection
Panel Reverse Polarity Protection
Battery Reverse Polarity Protection
Dimensions – L x W x H (cm)
Connector
Display
12V/24V
(Self Setting)
98.9%
40Amps
<2W
Optional
YES
YES
YES
2 x 16 LCDisplay
Net Weight (Kgs) / Gross Weight (Kgs)
Battery charging stages
Maximum Tracking Eciency
Bulk-Absorption-Float-Equalization
Input/Output Terminal block
2
Max. Applicable PV Panel Load &
Open Circuit Voltage (Voc) at different
Multifunction status display
Thank you for purchasing ASHAPOWER® NOVA-40 Vers.7.5 MPPT charge controller. It is a multi voltage range
device with unique features.The same device can be used for charging 1 battery (12V ) to a battery bank of 2x12V
battery banks
24V/1000Wp/95V Voc
32x15x11
2.4Kgs/2.7Kgs
12V/600Wp/60V Voc
4
56
7
LED INDICATORS
2x16 LCD DISPLAY
SETTINGS BUTTON
( )
SETTINGS BUTTON
SETTINGS BUTTON
TERMINAL COVER
IN/OUT POWER TERMINALS
7
6
5
4
3
2
1
INSTALLATION & OPERATION
1) PV Panel Grouping: Group the PV panel array using standard Solar MC4 connectors and parallel
connectors as to the recommended grouping example chart provided. Good quality weather proof solar DC
cables must be used (4sq,6sq,10sq).
2) Battery Bank Setup: If more than one battery is used, Connect the batteries with 16sq.mm/10 sq.mm
interlinking cables and tight them well. Check each battery separately for specific gravity, same terminal volt
and good backup.Do not use old and new batteries together, either in parallel or in series.
3) MPPT Charge controller installation: Mount the MPPT charge controller vertically on the wall using
the wall mounting clamp provided. It is better to isolate MPPT from the wall , mounting it on a PVC board
(kitchen cutting board) in order to avoid lightning hazards and earth leakage problems.
❎
Avoid exposure to rain, dusty area, direct sun light or in area having high temperature.
✅
Use 25 sq.mm/16 Sq.mm standard electric cables below 1.5 metre length as battery wires, red colour for
positive connection and black for negative. Remove the connection terminal cover of the charger.
Connect the battery wires with correct polarity to the desired battery bank. (Reverse polarity will spoil the
device) Three LED Indicators and cooling fan of the device starts functioning for 5 seconds and goes off.
MPPT Charge controller starts scanning the connected battery bank voltage and automatically configures
Display shows the voltage of the connected battery bank and maximum
applicable range of PV panel Voc limit for the connected battery bank.When the charger is connected
when the charge controller is powered ON.
KNOW YOUR DEVICE
NOVA-40 VERS.7.5
INDICATOR ON OFF BLINKING
SOLAR/GRID
POWER STATUS
LOAD IS ON
SOLAR
(BATTERY POWER)
PV PANEL
VOLTAGE IS HIGHE
THAN BATTERY BANK VOLTAGE
PV PANEL VOLTAGE IS LOWER
THAN BATTERY BANK
VOLTAGE / PV PANEL
CONNECTION NOT READY
LOAD IS ON GRID
POWER
(IF ONLY GRID IS CONNECTED
TO INVERTER THROUGH
MPPT CHARGER )
BATTERY LOW
WARNING INDICATION
TO DISCONNECT
HEAVY LOADS
SOLAR PANEL
VOLTAGE PRESENSE
SOLAR CHARGING
CURRENT DETECTED IS
MORE THAN 2 AMPS
SOLAR CHARGING CURRENT
IS LESS THAN 2 AMPS.
CHARGING IS STILL GOING ON
IN LOW AMPS
BULK CHARGING
INDICATION
SOLAR
CHARGING
STATUS
BLUE
GREEN
RED
3
( )
( )
ENTER
OFF
ON
-
itself to that particular volt.
on deeply discharged battery banks it will configure to low level battery voltage and results malfunction of the
device.
Ensure the displayed battery bank voltage and connected battery bank voltage is same
continued....
NOVA-40 VERS.7.5
the PV panel voltage and polarity is correct green LED indicator on the front panel glows on. When the
detected PV panel voltage is higher than the connected battery bank voltage red LED indicator glows on
When the PV panel voltage goes below the battery bank voltage the green LED indicator goes o.When the
device detects more than 2Amp charging current to the battery, charging LED (RED) glows on.
If the current is less than 2Amp the Red LED goes o ,but charging continuous in low amp till the solar power
availability.
When the connected battery voltage reaches GRID to SOLAR preset voltage (default 14.2V) the Blue LED
on the front panel glows ON indicating the battery is nearly full charge and ready to use the connected
load either directly from the battery or through a connected inverter.
How MPPT charge controller drives the connected Inverter (SMU)
Charge controller is provided with a relay inside to connect and disconnect grid power to inverter monitoring
the terminal volt of the battery.When the battery terminal volt rises up to 14.2V (adjustable) charger
disconnects grid power to the inverter and the load on it starts running on battery power (solar power). When
the solar charging current stops load will be working from the battery bank and the battery voltage goes
down. When it reaches 11.5V (adjustable) the device reconnects AC mains (grid power) to inverter and the
blue LED goes o. Blinking of blue LED indicates low battery bank voltage. ie. below 11.7 V (adjustable) giving
warning indication to remove heavy load on inverter.
Multifunction display status
E-TODAY
: Indicates everyday total solar energy production from the MPPT charge controller in units.
:This value disappears overnight and is added to total energy production in Units on the next day.
UNITS :Total solar energy produced from the solar charge controller in units from the day of installation.
This value resets when goes over 999 units or when battery power to MPPT is disconnected.
Automatic Grid power/ Solar Power Changeover function using MPPT charge controller
(Converting a Home Inverter to a Smart Solar Inverter - Solar Management Unit - SMU )
Remove the connected grid phase input wire from the the inverter and connect to the ‘PHASE IN’ terminal of
the charge controller.Connect another wire from the ‘PHASE OUT’ terminal of the charger to the input phase
connector of the inverter.
Automatic Solar to Grid / Grid to Solar changeover function
In default mode MPPT charge controller is in AUTO BYPASS "ON" mode.
If it is in "OFF" mode press and hold ( ) ON button on the front panel for 2 seconds to turn it ON.
What happens if Auto Bypass Mode is in "ON" mode
✔
Charger disconnects grid power to connected inverter when the battery volt goes above GRID to SOLAR
preset voltage. (default 14.2V per battery). Display shows INV MODE ON , AUTO BYPASS ON and
LOAD ON SOLAR indicator LED on the front panel (blue) glows on.
✔
Charger connects grid power to the connected inverter when the battery volt goes below SOLAR to GRID
preset voltage. (default 11.5V per battery).
Display shows INV MODE OFF, AUTO BYPASS ON and
LOAD ON SOLAR indicator LED on the front panel (blue) goes off.
To turn "OFF"
automatic bypass function of the charger press and hold (
) OFF button on the front panel
for 2 seconds.
What happens if Auto Bypass function is in "OFF" mode
✔
Charger reconnects grid power to the connected inverter. Displays shows INV MODE OFF, AUTO BYPASS
MODE OFF.
In this mode inverter will be always on grid power.
What is the Forced Grid to Solar Shifting feature.
by pressing and holding ( ) ENTER button for 3 seconds.
indicating battery charging.
This feature helps the customers using the charge controller as SMU. (solar management unit - converting a
a sudden heavy load on connected inverter drops the battery voltage below the preset solar to grid changeover
volt and the charge controller shifts the connected inverter load to grid power. It will only be shifted back
to solar mode automatically the very next day when battery is fully charged.If the battery terminal voltage is
above the solar to grid preset voltage (default 11.5v) the inverter load can be shifted back to solar mode again
normal inverter to solar inverter) When connected battery voltage is at low level (after sunset or in dim sun light)
SPV AMP :Indicates available PVpanel input current (Amp) from the connected solar panels.
SPV VOLT :Indicates available PV panel input voltage from the connected solar panels.
CHG AMP :Indicates current flow (Amp) from the charge controller to the battery and connected load in live.
BAT VOLT :Indicates terminal voltage status of the connected battery bank.
WATTS : Indicates currently available solar power in watts from the connected solar panels.
Connect the cables from PV panels to the solar positive and negative terminals of the charge controller. If
4
5
12V 30-60V 600W
1000W
50-95V24V
EXAMPLES FOR GROUPING OF PV PANELS
Follow these examples to achieve maximum MPPT performance
Battery
Bank Volt
Max.PV Panel
Voltage
Range (Voc)
Max.PV Panels Applicable in Watts Max.PV Panels
Applicable in
Watts
1) 24 V Voc (200W PANEL) X 2
PANEL IN SERIES =48Voc = 400W
2) 21V VOC (150W PANEL) X 2 PANELS IN SERIES
=42Voc = 300W x 2 STRINGS=600W
3) 47 V Voc(375W PANEL) X1
4) 51 V Voc(400W PANEL) X 1
Note: Solar panels should be grouped in such a way that the Open
Circuit Voltage (Voc) of the panels connected in series should not
exceed the Maximum panel voltage mentioned above for each
battery bank!
1) 47V Voc (375W PANEL) X 2
PANEL IN PARALLEL =47Voc = 750W
2) 36 V VOC (250W PANEL) X 2
PANEL IN SERIES = 72 Voc =
500W X 2 STRINGS IN PARALLEL
=1000W
6
1000W/24V OFF GRID SOLAR POWER PLANT
500W/12V OFF GRID SOLAR POWER PLANT
CONNECTION DIAGRAMS
51
Voc, 540W PV PANEL
ASHAPOWER
CHARGE CONTROLLER
INVERTER
INVERTER
LOAD
LOAD
GRID
GRID
(1 X 12V BATTERY)
Max PV Voc Range 30V to 60V
7
1 2 3 4 5 6
8 9 10 11
PPN
N
12V BATTERY BANK
Voc 51 V
550W
Total Watts
IN
P N P
OUTBAT IN
7
1 2 3 4 5 6
8 9 10 11
PPN
N
Total Voc
72V
1000W
Total Watts
(2 X 12V BATTERY)
(24V BATTERY BANK)
Max PV Voc Range 50V to 95V
IN
P N P
OUTBAT IN
ASHAPOWER
CHARGE CONTROLLER
36 Voc, 250W PV PANELS
2 PANELS IN SERIES X 2 STRINGS
IMPORTANT NOTE FOR ACTIVATION OF INITIAL LIMITED
AMPERE BATTERY CHARGING AND EQUALIZATION CHARGING
1. What is initial limited ampere battery charging in MPPT charge controller ?
Maximum recommended charging current for a solar C10 lead acid battery is up to 20% of its Ah.
Batteries used in solar power system is often discharged below 11.5V every day. So it is recommended to start
initial charging with limited ampere instead of charging with maximum capacity of the charge controller.
Eg: Recommended maximum charging current for a 12V,150Ah lead acid solar battery is 30 Amp. If such a
battery is connected to MPPT charger delivering above 30 amps, the excess ampere entering the battery
can be controlled in the initial charging stage by activating initial limited ampere battery charging feature.
On activating this feature charger delivers only 20% of the connected battery Ah. ie.30 amps to the battery.
Option 1. Ampere Limiting based on grid to solar load shifting voltage:
In this mode battery charging ampere is limited in the initial stage up to the given limit of grid to solar load
shifting voltage. (eg.If grid to solar load shifting voltage is set to 14.2v charge controller limits the charging
current up to 20% of the Ah of the connected battery up to this volt limit.There after the entire current
is shared between the connected inverter load and battery charging).
Option 2. Ampere limiting based on Charging mode :
In this mode also, battery charging ampere is limited in the initial charging stage and the limitation is stopped
when float charging starts (completion of bulk charging stage). There after the entire current is shared
between the connected inverter load and battery charging.
MPPT charge controllers are sun light dependent devices and they can’t deliver high ampere in the morning.
They start to charge the batteries in low ampere early in the morning. As the terminal volt of the battery
increases, charge controller shifts the connected inverter load to solar power mode and the current is shared
between connected load and battery charging.Hence the activation of limited ampere charging is not
necessary in low ampere charge controllers connected with high Ah batteries.
eg: If the charge controller delivers more than 30amp current in starting stage and the connected battery is
below 150Ah it is recommended to activate limited ampere charging option.
2. What is Equalization charging in MPPT charge controller
When a lead acid battery is left in a discharged state for extended periods of time, non-removable sulphate
crystals are formed on the surface of battery plates that reduce the charging and discharging capacity of the
battery. Equalization charging is an over charging process of lead-acid batteries above their recommended
ERROR
CODE DESCRIPTION
TROUBLE SHOOTING
SOLUTION
EV PV PANEL VOLTAGE
ERROR
EB BATTERY BANK VOLTAGE
ERROR
ET HIGH TEMPERATURE
HARDWARE
FAILURE
HARDWARE ERROR
PV PANEL VOLTAGE IS NOT INTHESPECIFIED LIMIT. CHECK FOR PV PANEL GROUPING.
REFER PV PANEL GROUPING MANUAL PROVIDED.
CONNECTED BATTERY BANK VOLTAGE IS NOT IN THE SPECIFIED LIMIT. CHECK FOR
DEFECTIVE BATTERIES LOOSE CONNECTION OF JUMPER WIRES AND NUMBER OF
BATTERIES.
CONNECTED PV PANEL CAPACITY (WATTS) IS NOT IN THE SPECIFIED LIMIT OR CHECK
FOR THE FUNCTION OF THE COOLING FAN.
LIGHTNING MAY CAUSE HARDWARE FAILURE. IF CONTINUOUS BEEP SOUND AND
ERROR MESSAGE EM IS SEEN, CHECK FOR LOOSE CONTACT OF BATTERY
CONNECTORS OR FAULTY BATTERIES.DISCONNECT AND RECONNECT THE BATTERY
WIRES FROM THE DEVICE. IF THE PROBLEM PERSISTS CONTACT THE INSTALLER FOR
SERVICE ASSISTANCE.
EARTH LEAKAGE FROM THE MOUNTED WALL MAY CAUSE HARD WARE ERROR
MESSAGE.UN-MOUNT THE DEVICE AND ISOLATE IT FROM THE WALL BY MOUNTING
ON A WOODEN OR PVC BOARD.
7
EM
(continued...)
Option 3. Ampere limiting irrespective of charging mode.
If the battery is still in float charging mode in the morning, the charge controller will not limit the charging
current and the entire ampere will enter the battery.So it is recommended to set the option 3 to start with initial
limited amp charging everyday morning.
Three options are given to control the initial charging limit. In default the charge controller is
is set in option "0" without any ampere limiting in charging.
SMF, VRLA, AGM, GEL Batteries.
SMF (sealed maintenance free), SLA (Sealed lead acid) and VRLA (Valve regulated lead acid) batteries are
same. Its 2 types of cells are (AGM (Absorbed glass mat) and GEL cells. They are maintenance free batteries
which do not require regular water filling, its composition of electrodes and electrolyte is same as flooded lead
acid batteries. These batteries do not need to be kept upright as the electrolyte is in the form of gel or paste).
Un-attended equalization charging of battery is risky as there is chance for overheating of battery
plates, overflowing of electrolyte and damaging of batteries.
Remove all loads from the batteries before starting equalization charging. Fill all the battery cells with distilled
water in the required level. It is better to remove all the lids of the batteries before starting equalization
charging as the batteries will begin gassing and bubbling vigorously at the peak stage of boost charging.
Ensure the batteries are installed in a good ventilated area. Even a spark from a metal cutter, loose contact of
battery wires may cause fire hazard and explosion of batteries. During equalization charging, check the
changes in the specific gravity of acid of each cells every hour and stop charging if the gravity and voltage of
cells no longer rises during the gassing stage. Further improvement of the cell is not possible and continued
charging will spoil batteries.
Enabling limited ampere charging in MPPT charge controller.
Enter settings menu 13. AMP-LT (See function settings page in user manual)
Select option “0” to disable all initial limited ampere charging. (In default the charger is preset in "0"mode)
Select option "1" for limited ampere charging up to the preset value of 7th menu.(Grid to Solar shifting volt)
(14.2V default) When kept in this mode charger delivers only 30 amps of charging current to the
connected battery if the Ah is set to 150. After shifting to solar mode the entire current is shared between
the connected inverter load and for battery charging.
Select option "2" for limited ampere charging up to the preset value of 2nd menu. (Bulk charging limit)
(14.8V default) Charger delivers only 30 amps of charging current to the battery if the Ah is set to 150 and
the ampere limit is released when the charger enters float charging mode.
Enabling equalization charging in MPPT charge controller.
Enter settings menu and configure menu 5.N-DAYS “0” to disable all modes of equalization charging.
Enter settings menu and configure following settings for enabling equalization charging.
3.EQLZ-V : Set the equalization voltage.
As the equalization is an over charging process, ask a battery expert before setting the maximum applicable
upper voltage limit. Blind settings will spoil the batteries.
4.BVLC-V :
Select the battery low voltage level to enable equalization charging based on battery terminal
volt. (Configure a value slightly less than inverter low voltage cut o to avoid frequent equalization charging)
5.N-DAYS : Set period of Equalization charging.
N-DAYS = 0 =>Disables all modes of Equalization charging
N-DAYS = 1 =>Equalization charging starts every alternate days
N-DAYS = 2 =>Equalization charging starts every 2 days
………………………………………………………………………………..
N-DAYS = 30 => Once in a month (Recommended)
N-DAYS = 90 => Once in 3 months
N-DAYS = 180 => Once in 6 months
13.AMP-LT : It is recommended to preset AMP-LT in mode “2” (initial limited ampere charging) on
Equalization charging mode.This option is recommended because system will not shift from grid to solar
mode till the equalization charging is completed which helps to rise battery terminal voltage gradually
and attains maximum gravity of electrolyte and gets good backup from batteries.
8
charging voltage, to remove sulfation and bring all cells of the battery to similar levels by increasing the
voltage to 2.50V/cell or 10 percent higher than the recommended charging voltage. Equalization charging
also equalize acid stratification, a condition where acid concentration is greater at the bottom of stationary
batteries than at the top level. Battery experts recommend periodic equalization charging to keep the
batteries healthy (once in every three month).
Select option "3" for ampere limiting irrespective of charging mode.
If the battery is still in float charging mode in the morning, the charge controller will not limit the charging
current and the entire ampere will enter the battery.So it is recommended to set the option 3 to start with initial
limited amp charging everyday morning.
Changing the default settings of MPPT charge controller
Note: Before changing the default settings values of the device, ensure the maximum ampere and voltage
ratings applicable for your battery type and brand (SMF, LEAD-ACID, GEL) This device is not designed for
direct charging of lithium Phosphate battery . Blind settings may cause severe damage to the batteries and
charge controller. Default values given are for lead acid C10 grade solar batteries.To reset to default settings
enter settings menu 14 F-RST and set the value to "1". (Refer user manual function settings page)
Refer battery user manual for recommended charging ampere and voltage for the connected batteries.
Never try to change the default settings of the device without the help of technical advice. Note down the default
settings of the device before changing. Read function settings page before changing default settings of the
device.
How to Enter settings mode of MPPT charge controller.
Connect the charge controller to the desired battery bank. Consecutive pressing of the ENTER button ( )
displays the existing function settings of the charger.
To enter Setup mode , keep pressing OFF button ( ) for 3 seconds and press ENTER button ( ) also
without releasing OFF button ( ) for 3 seconds. Now MPPT enters setup mode, displaying version
number and model name. Press the ENTER button ( ) to scroll through the various setup menu as
shown in the function settings page.Use the ON button ( ) to increase and OFF button ( ) to decrease the
default values. When kept idle for 5 seconds or gone through all settings menu new settings will be saved and
the device goes to normal mode.
When default settings are changed charge controller will be in Auto bypass OFF mode. To turn ON the
Auto bypass mode press and hold UP button ( ) for 2 seconds.
Before starting it is better to make a plan of your solar energy needs and ensure your existing inverter and
batteries are suitable for solar application. When a battery is charged with limited charging ampere (6Amp to
10Amp ) for long hours it delivers good energy backup. Solar charging and discharging is a daily process with
high current from solar panels. We get only 4 to 5 hours average sun light in a day and have to charge the
batteries in this time. C10 grade solar batteries above 100 Ah have the capacity to handle high current charging
and discharging. Usually inverter batteries are either C20 grade or C10 grade normal batteries. An inverter
battery is always connected to grid power and continuously charging the batteries in limited ampere for
long hours (6AMP to 10AMP) and gives good back up. That is why we don't get enough backup from normal
batteries when charged from solar power with high current. If we use normal batteries for solar charging with
limited charging current they can't be fully charged before evening. So always insist on C10 grade solar
batteries for solar applications. Now check your home inverter is provided with a grid charging ON/OFF switch.
Most of the branded normal type inverters are not provided with a grid charging ON/OFF switch on them. When
we use this type of normal inverter in solar o-grid system it will charge batteries from grid power and we do
not get actual solar benefit.Customers use external grid changeover relay systems to overcome this problem.
HOW THE CHARGE CONTROLLER DRIVES THE CONNECTED INVERTER
Most of the SMU type solar MPPT charge controllers are provided with an inbuilt relay to control grid power
to the inverter.Remove grid power phase wire from your inverter and connect to PHASE IN terminal of
MPPT.Connect a wire from the PHASE OUT terminal of MPPT to the PHASE IN terminal of the inverter. (Never
connect the neutral wire of grid power to any connectors of MPPT). When charging starts terminal volt of the
battery rises to the preset voltage 14.2 V (this value is adjustable) MPPT disconnects the AC mains to the
inverter and the connected load on the inverter works on battery power (solar power). when the battery
terminal volt goes down (in the evening or cloudy sky) and reaches 11.5 V (this value is adjustable) MPPT
reconnect grid power to the inverter. If your inverter is a normal type without a grid charging disabling switch
it will charge the batteries and we don't get the solar benefit. To overcome this it is better to limit the load on
the inverter and keep the battery terminal volt always high. Some customers use solar power only in the
daytime and shift the load to AC mains by keeping the shifting to AC mains voltage 12.0 V or more. Fitting an
external grid change over the relay system for bypassing grid power directly to load is also applicable. If we
use an inverter with a grid charging ON/OFF switch we can keep the switch in o position to avoid charging
from the grid. Only on cloudy days we can keep the switch in on position and charge the batteries from grid
power.
CONVERTING A NORMAL INVERTER TO A SMART SOLAR INVERTER
USING MPPT CHARGE CONTROLLER
9
Accessing settings menu allows the user to customise and calibrate the charge controller
MENU TYPE
DESCRIPTION RANGE
FLOAT-V
Battery float
charging limit
SETTINGS 13.0V 14.2V 15.5V
13.5V 14.8V 16.5V
14.0V 15.5V 16.5V
9.0V 10.5V 13.0V
"0"
day
"0"
day
180
day
3A 40A 40A
12.0V 14.2V 16.0V
MIN MAXDEFAULT
SETTINGS
SETTINGS
SETTINGS
Battery equalization
charging settings
BULK-V
Battery bulk
charging limit
EQLZ-V
Battery equalization
upper volt limit
BVLC-V
Battery equalization
lower volt limit
N-DAYS
Select the equalization
period in days
MAX - AMP
Set the output ampere of
MPPT charge controller
GRD-SOL
Set grid power mode to
solar mode shifting volt
Limit the float charging voltage recommended for the batteries. This
value varies in dierent types of batteries. Default value given is for C10
grade solar lead acid batteries. For SMF and Gel batteries this value is
between 13.0V to 13.8V. Refer battery user manual to change the value
Limit the maximum bulk charging voltage are commended for the
batteries.This value varies in dierent types of batteries.Default value
given is for C10 grade solar Lead acid batteriesF.or SMF and Gel
batteries this value is between 13.5V to 14.5V (Refer battery user manual
before changing)
(Never try to equalise sealed (SMF,SLA,GEL) batteries). Limit the
maximum voltage required to boost the lead acid batteries. Equalization
is an over charging of battery above their recommended bulk charging
voltage to equalise terminal volt of all cells
If grid power is connected to inverter through MPPT to shift the load
automatically from grid power to battery power (solar power) set the
changeover battery voltage preferred
Limit the charging current to the battery if needed. (maximum charging
current is recommended as 20% of the Ah of a single 12V lead acid battery.
Eg: for a 150Ah battery, 30ampereis the maximum charging current
recommended. Refer battery user manual before changing the value
Select the battery low volt level to activate auto equalization based on
battery volt.(Select a volt limit just below the inverter low volt cuto level
to control frequent equalization)
Select the number of days to activate periodic equalization
NEVER TRY TO CHANGE THE DEFAULT SETTINGS OF
THE DEVICE WITHOUT TECHNICAL ADVICE TO AVOID
MALFUNCTION AND HAZARDOUS RESULT
CAUTION
MPPT FUNCTION SETTINGS VERS.7.5
10
1
2
3
4
5
6
7
(continued..)
(see reference in manual)
MENU TYPE
DESCRIPTION RANGE
SOL-GRID
Set solar power to grid
power shifting voltage
SETTINGS 9.0V 11.5V 16.0V
LB 11.7V 16.0V
10Ah 150Ah
70 92 150
- - -
-"0"
ZERO
"0"
ZERO
"1"
MIN MAXDEFAULT
SETTINGS
SETTINGS
CALIBRATION
CALIBRATION
SETTINGS
SETTINGS
BLK-LED
Battery low volt
warning limit
BAT-AH
Set the Ah of the
connected battery
CAL-AMP
Ampere calibration
setting of the charger
CAL-VOLT
Volt calibration
setting of the charger
AMP-LT
Settings for initial
limited ampere charging
(Initial Charging ampere is
limited to 20% of the
Ah of the connected battery)
14.F-RST
Factory Reset
Set the changeover battery voltage preferred to change the load
automatically from solar power (battery power) to grid power
Blinking of blue LED indicates low battery volt. Set this value above the
value given in the 8th menu SOL-GRID changeover volt limit
Set the Ah of the connected battery bank to limit the bulk charging
time Eg: If 2 X 150Ah battery is connected in series set the value 150Ah
and if connected in parallel set as 300Ah
Note the battery volt reading on the MPPT display.Measure battery
terminal volt using a true RMS DC voltmeter.If there is dierence
inreading UP or DOWN the default value till both readings are equal
To reset all settings to default settings
A) Select option "0" to stop all initial limited ampere battery charging
B) Select option "1" to start initial limited ampere charging upto the
preset value of 7 the menu. (Grid to solar shifting volt 14.2 default)
C) Select option "2" to start initial limited amp charging up to the preset
value of 2nd menu. (Bulk charging limit 14.8 default) Charger releases
ampere limiting when float charging mode starts.
When MPPT charging is going on connect a true RMS DC clamp
meter ( Fluke brand is better ) over the positive battery wire and ensure
the same reading is seen on the MPPT display.Calibrate and correct if
there is dierence.If the reading is less in clamp meter increase 2 or
3points using UP button and save changes.If the reading is high in the
clamp meter decrease 2 or 3 points and save the changes.Repeat
the charging process till both display shows same reading
NEVER TRY TO CHANGE THE DEFAULT SETTINGS OF
THE DEVICE WITHOUT TECHNICAL ADVICE TO AVOID
MALFUNCTION AND HAZARDOUS RESULT
CAUTION
MPPT FUNCTION SETTINGS VERS.7.5
11
D) Select option "3" to start with limited amp battery charging everyday
morning even if the charger is in float charging mode
"2" "3"
,,
"1"
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9
10
11
12
13
14
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IMPORTANT SAFETY PRECAUTIONS
Lead Acid Batteries Produce Hydrogen Gas Which is Highly Flammable
1) Never use a flame or any kind of spark producing device near fully charged batteries as it may cause
an explosion of the batteries and fire hazard (eg: Checking battery water level under a candle flame,
spark from metal cutter or spark from loose contact of battery connecting wires).
2) Maintenance of the batteries and PV panel array at regular intervals make the solar power system
trouble free and fresh.
3) Solar panels should be grouped in such a way that the maximum Open Circuit Voltage (Voc) of the
panels connected in series should not exceed the Maximum PV panel voltage recommended for each
Battery Banks.
4) Safety precautions must be taken while grouping and connecting PV panels to the charge controller
with high Voc input. (500 Volt DC current from the PV panel is highly dangerous. Never touch the
terminals without safety glows).
5) Extreme care should be taken while connecting High voltage solar power systems.
6) Earthing and wiring of high power solar system must be done under the supervision of a qualified
electrical engineer.
7) Never connect the PV panel connection to the battery input or the connection of the batteries to the
PV input.
8) Never connect any of the grid line to any of the DC (PV or Battery) connection terminals.
9) The installation and use must comply with the local safety instructions and standards in force.
10) We disclaim all responsibility and liability for damage, costs or losses resulting from an installation
that does not comply with the instructions, a faulty operation or inadequate maintenance.
11) The use of the charger is in any case under the responsibility of the customer.
12) This equipment is neither designed nor guaranteed to installations used for vital medical care nor any
other critical installation entailing potential risks of damage to people or to the environment.
16/404-H Ashapower Tower, Kondotty-Areekode Main Road,
Kizhisseri, Kuzhimanna PO, Malappuram
DIST,Kerala-673641,
INDIA.
Support :+91 7594 82 1003
www.ashapower.in
I N N OV ATING TOMORROW
12
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