Max-Mppt series Solar controller User Manual

Max-Mppt series Solar controller User Manual
Solar Charge Controller Max-MPPT User Manual
Solar charge controller
Dear Clients,
Thanks for selecting the Max-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
Max-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%
Max-MPPT series
Solar charge controller
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
Max-MPPT series
Solar charge controller
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
isolated tools, stand on dry ground, and keep your
To avoid any voltage on the wires, first connect the wire to
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.
2.2 Liability Exclusion
Recommended minimum wire size:
The manufacturer shall not be liable for damages,
10A : 2.5mm²; 15/20A : 4mm².
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
Be aware that the negative terminals of Max-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
Solar Charge Controller Max-MPPT User Manual
5.Starting up the controller
4.1 Mounting location requirements
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.
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
5.1Se l f Te st
A s s o on as t h e c o ntrolle r is supplied with batter y,
it s t arts a s elf t e s t rout i ne. T he n t h e display change s
t o n o rmal operat i on.
5.2System Vol tage
T h e con t r o lle r a dju sts i t s e lf autom at ically to 12V
o r 24V system v o ltage . As soon as the bat t e r y
voltage at t h e time of s t a rt- up is within 1 0 V to 1 6 V,
the co nt r o ll e r im p l ies a 12 V system, e l se i f th e
bat t e r y voltage is within 20 V to 30V, the co n trol le r
impl ie s a 2 4 V s ys tem .
I f t h e batter y vol t age is n ot w i th i n the norm a l
op e ra t ing ran g( ca.10 to 1 6V or ca.20 to 30 V ) a t startu p , a s tat us display ac c o r d ing to t h e s e ction 6.2
Charge & Error disp l ay .
5. 3B at ter y Ty pe
The Max-Spi r it s e rie s con t r o lle r applies to Liquid
and Ge l batter y, the f a cto r y defau lt s ett i ng is
s uitable for liq ui d batter y.
Please r e fer t o 7.1. 2 c hang e se t ting.
5 . 4 Work Mode
The wo r k m ode of t h e c o ntrolle r is sel e ctable
( Standard and D2D), t h e fact o r y de fault se t ting is
standar d.
Please r e fer t o 7 .1. 1 ch an ge set t in g .
Day/Night threshold
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
Light on
charge controller (with the battery symbol). If the
system is 12V, please make sure that the battery
voltage is within 10V~16V, else if the system is 24V, the
Light on
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)
Solar Charge Controller Max-MPPT User Manual
6.Display Functions
7. Interface 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
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
1 2
7.1.2 DIP switch stall 2 -- Battery type selection, the default
Yellow 2 On, Energy of Battery is about 50~75%.
Green On, Energy of Battery is about 75~100%.
setting is liquid battery (As shown in figure). If slide the DIP
switch to "ON", the battery type is selected as GEL.
percentage corresponds to the available energy
until low voltage disconnect in relation to a fully charged
6.2 C harge & Error display(INFO):
INFO green flashing, that is charging (fast flash
for MPPT charge state, slow flash for non MPPT
1 2
1 2
7.2 Reser ved Interface
External temperature sensor and COM communication
interface , please consult the supplier.
charge state); otherwise, no charge;
INFO Red On, is Error Status. For more details,
please see table below.
and Bat.)
LED are
is flashing
Battery 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
Does not
the system
Switch off all loads.
Remove short
Auto recovery when
the temperature is
below set value.
Solar array faulty
Green LED or wrong polarity
is off
Batter y voltage
Solar terminal Battery terminal Load terminal
too high
LED are
Remove faulty
reverse polarity
Check if other
sources overcharge
the battery.
If not, controller
is damaged.
Battery wires or
Check batter y
battery fuse
wires, fuse and
damaged, battery
batter y.
has high resistance
The batter y
voltage is not
within the normal
operating rang
at start-up
Charge or discharge
the battery to make
the voltage within
the normal range
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
Solar Charge Controller Max-MPPT User Manual
9.Technical Data
Technical Data
System voltage
12V/24V automatic recognition
Max solar current or load current
10 A
Max MPPT efficiency
15 A
20 A
12V: 225W, 24V: 450W
12V: 300W, 24V: 600W
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
-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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