SC MPPT series Solar charge controller User Manual - OPTI

SC MPPT series Solar charge controller User Manual - OPTI
SC MPPT series
Solar charge controller
SC-10 MPPT: 10A,100VDC max
SC-15 MPPT: 15A,100VDC max
SC-20 MPPT: 20A,100VDC max
User Manual
Dear Clients,
Solar charge controller
Thanks for selecting the SC MPPT series solar controller. Please take the time to read this user manual, this will help you to
make full use of many advantages the controller can provide your solar system.
This manual gives important recommendations for installing and using and so on. Read it carefully in your own interest please.
1.Description of Function
SC MPPT series solar controller is based on an advanced
maximum power point tracking (MPPT) technology
developed, dedicated to the solar system, the controller
conversion efficiency up to 98%.
It comes with a number of outstanding features, such as:
Innovative MPPT technology, conversion efficiency up to 98%
Many choices of battery type and working mode
Clear readable display of charge/discharge, battery and
error description
12V/24V automatic recognition
Temperature compensation
Perfect EMC design
Four stage charge way: MPPT, boost, equalization, float
Full automatic electronic protect function
2.Safety instructions and waiver of liability
2.1 Safety
①The solar charge controller may only be used in PV
systems in accordance with this user manual and the
The following diagrams provide an overview of the
connections and the proper order.
specifications of other modules manufacturers. No
energy source other than a solar generator may be
connected to the solar charge controller.
②Batteries store a large amount of energy, never short
circuit a battery under all circumstances. We strongly
recommend connecting a fuse directly to the battery to
protect any short circuit at the battery wiring.
③Batteries can produce flammable gases. Avoid making
sparks, using fire or any naked flame. Make sure that the
battery room is ventilated.
④Avoid touching or short circuiting wires or terminals.
④ ②
① ⑥
Be aware that the voltages on special terminals or wires
can be as much as twice the battery voltage. Use
To avoid any voltage on the wires, first connect the wire to
isolated tools, stand on dry ground, and keep your
hands dry.
the controller, then to the battery, panel or load.
⑤Keep children away from batteries and the charge
Make sure the wire length between battery and controller
is as short as possible.
Recommended minimum wire size:
2.2 Liability Exclusion
The manufacturer shall not be liable for damages,
especially on the batter y, caused by use other than
as intended or as mentioned in this manual or if the
recommendations of the batter y manufacturer are
neglected. The manufacturer shall not be liable if
there has been ser vice or repair carried out by any
unauthorized person, unusual use, wrong
10A : 2.5mm²; 15/20A : 4mm².
Be aware that the negative terminals of SC MPPT are
connected together and therefore have the same
electrical potential. If any grounding is required, always do
this on the negative wires.
Connecting capacitive load may trigger short circuit
installation, or bad system design.
Page 1 of 4 pages
4.1 Mounting location requirements
5.Star ting up the controller
Do not mount the solar charge controller outdoors or in
wet rooms. Do not subject the solar charge controller to
direct sunshine or other sources of heat. Protect the solar
charge controller from dirt and moisture. Mount upright on
the wall on a non-flammable substrate. Maintain a
minimum clearance of 10cm below and around the device
to ensure unhindered air circulation. Mount the solar charge
controller as close as possible to the batteries.
4.2 Fastening the solar charge controller
Mark the position of the solar charge controller fastening
holes on the wall, drill 4 holes and insert dowels, fasten the
solar charge controller to the wall with the cable openings
facing downwards.
5.1Self Test
As soo n as the controller is supplied with batter y,
it star ts a s elf test routine. Then the display changes
to normal operation.
5.2System Voltage
The co ntroller adjusts itself automatically to 12V
or 2 4V system voltage. As soon as the batter y
voltage a t the time of star t-up is within 10V to 16V,
the c ontroller implies a 12V system, else if the
batter y v oltage is within 20V to 30V, the controller
implies a 24V system.
If th e batter y voltage is not within the normal
operating rang(ca.10 to 16V or ca.20 to 30V)at star tup, a s tatus display according to the section 6.2
Charge & Error display.
4.3 Connection
We strongly recommend connecting a fuse directly to the
battery to protect any short circuit at the battery wiring.
Solar PV modules create current whenever light strikes them.
The current created varies with the light intensity, but even
in the case of low levels of light, full voltage is given
by the modules. So, protect the solar modules from incident
light during installation. Never touch uninsulated cable
ends, use only insulated tools, and make sure that the wire
diameter is in accordance with the solar charge controller’s
expected currents. Connections must always be made in the
5.3Batter y Type
The Ma x-Spirit series controller applies to Liquid
and Gel batter y, the factor y default setting is
suitable for liquid batter y.
Please refer to 7.1.2 change setting.
5.4 Work Mode
The work mode of the controller is selectable
(Standa rd and D2D), the factor y default setting is
Please refer to 7.1.1 change setting.
sequence described below.
Day/Night threshold
1st step: Connect the battery
Connect the battery connection cable with the correct
polarity to the middle pair of terminals on the solar
charge controller (with the battery symbol). If the
Day/Night threshold
Light on
Light on
system is 12V, please make sure that the battery
voltage is within 10V~16V, else if the system is 24V, the
Light off
battery voltage should between 20V~30V. If the
polarity is correct, the LED on the controller will begin
to show.
2nd step: Connect the solar module
Ensure that the solar module is protected from
incident light. Ensure that the solar module does not
exceed the maximum permissible input current.
Connect the solar module connection cable to the
correct pole of the left pair of terminals on the solar
charge controller (with the solar module symbol).
3rd step: Connect loads
Connect the load cable to the correct pole of the
right pair of terminals on the solar charge controller
(with the lamp symbol). To avoid any voltage on the
wires, first connect the wire to the load, then to the
4th step: Final work
Fasten all cables with strain relief in the direct vicinity
of the solar charge controller (clearance of
Page 2 of 4 pages
D2D(Dusk to Dawn)
6.Display Functions
7. Inter face Description
The controller is equipped with 6 LEDS.
In normal operation, the controller shows charge or discharge
status, battery capacity and load status.
Reser ved
DIP Switch
7.1 DIP Switch
6.1 Batter y Capacity display:
Yellow 1
Inter face
1 2
7.1.1 DIP switch stall 1 -- Work mode (Standard and D2D)
Yellow 2
settings, the default is Standard(As shown in figure). If slide
the DIP switch to “ON”, the controller works in D2D
Red On, Energy of Battery <25%.
Yellow 1 On, Energy of Battery is about 25~50%.
1 2
setting is liquid battery (As shown in figure). If slide the DIP
Green On, Energy of Battery is about 75~100%.
The percentage corresponds to the available energy
switch to "ON", the battery type is selected as GEL.
until low voltage disconnect in relation to a fully charged
1 2
6.2 Charge & Error display(INFO):
INFO green flashing, that is charging (fast flash
1 2
7.1.2 DIP switch stall 2 -- Battery type selection, the default
Yellow 2 On, Energy of Battery is about 50~75%.
for MPPT charge state, slow flash for non MPPT
charge state); otherwise, no charge;
INFO Red On, is Error Status. For more details,
please see table below.
and Bat.)
LED are
is flashing
Batter y is
not being
the day
Batter y is low
Load will reconnect
as soon as battery
is recharged
Fast flash:
over current/short
circuit of loads
Slow flash:
over temperature
Solar array faulty
Green LED or wrong polarity
is off
Batter y voltage
Does not
the system
too high
Green(Bat.) Battery wires or
LED are
battery fuse
damaged, battery
has high resistance
The batter y
External temperature sensor and COM communication
interface , please consult the supplier.
Solar terminal Battery terminal Load terminal
Switch off all loads.
Remove short
Auto recovery when
the temperature is
below set value.
Remove faulty
reverse polarity
Check if other
sources overcharge
the battery.
If not, controller
is damaged.
Check batter y
wires, fuse and
batter y.
Charge or discharge
voltage is not
All LED within the normal he battery to make
the voltage within
Lighted operating rang
the normal range
at star t-up
1 2
7.2 Reser ved Inter face
Protected *1 Protected *1
Short circuit Protected
Protected *3
Switches off
Switches off
with delay
Over current
Protected *2
Over voltage Max.100V *4 Max. 40V
Over temp.
Switches off
switches off the load if the temperature
reaches the set value.
*1 Controller can not protect itself in a 24V system when
polarity of battery or solar is reversed.
*2 Controller can protect itself, but loads might be damaged.
*3 Battery must be protected by fuse, or battery will be
permanently damaged.
*4 The solar panel voltage should not exceed this limit for
a long time as voltage protection is done by a varistor.
Warning: The combination of different error
conditions may cause damage to the controller.
Always remove the error before you continue
connecting the controller.
Page 3 of 4 pages
9.Technical Data
Technical Data
SC-10 M P P T
System voltage
12V/24V automatic recognition
Max solar current or load current
10 A
Max MPPT efficiency
Max PV input power
12V: 150W ,24V: 300W
Float voltage
13.7V/27.4V (25℃)
Boost voltage
14.5V/29.0V (25℃)
Equal voltage
14.8V/29.6V (25℃) (Liquid)
Day/Night threshold
Load disconnect voltage
Load reconnect voltage
Batter y type
Liquid, Gel
Work mode
Standard, D2D(Dusk to Dawn)
Temperature compensation
SC-15 M P P T
SC-10 M P P T
15 A
20 A
12V: 225W, 24V: 450W
12V: 300W, 24V: 600W
-4.17 mV/K per cell (Boost and Equal charge),
-3.33 mV/K per cell (Float charge)
Max solar voltage
100 V
Max batter y voltage
40 V
164*189*73mm / 800g
Max power consumption
Temp. Range during operation
-35℃ ~ +55 ℃
Storage temperature
-40℃ ~ +80 ℃
Relative humidity
10%~90% Non-condensation
Case protection
164*189*73mm / 900g
Page 4 of 4 pages
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