Sun21 CCS Series User manual

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CCS Series Solar Charge Controller
（CCS-P3024/4024/6024）
User Manual

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Dear users
Thank you for choosing our product. Before using the product, please read this manual carefully.
1. Product Features
1.1. Automatic system voltage identification
1.2. Charging program options for sealed, GEL and flooded lead-acid batteries and lithium batteries are available.
1.3. An upgraded 3-stage PWM charging algorithm is adopted. Application of an equalizing charge to the battery
periodically or when over discharged, can effectively prevent the battery from non-equalization and sulfuration,
thus extending the battery's service life (with the exception of GEL and lithium batteries).
1.4. With temperature compensation employed, charging parameters can be automatically adjusted (with the exception
of lithium batteries).
1.5. A wide range of load working modes facilitate the product's application to different types of street lights and
monitoring devices.
1.6. The product provides overcharge, over-discharge, overload protection, as well as short-circuit and
reverse-connection protection.
1.7. By virtue of an advanced load starting method, large-capacitance loads can be started smoothly.
1.8. A range of parameter settings and power-down saving functions are available ,thus requiring no repeated setting.
1.9. The product provides a dot matrix graphic LCD screen and a human-machine interface with 2 keys.
1.10. The user-friendly design of browser and dynamic interfacesensures convenient and intuitive operations.
1.11. (An optional communication function) provides a RJ12 data port (output of TTL232 level or bluetooth signals), with
the data adopting the standard Modbus protocol, and can be used together with our upper computer monitoring
software or mobile phone APP.
1.12. Boasting an industrial grade design, the product can function well in various tough conditions.
1.13. TVS lighting protection is adopted.
2. Panel Structure

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3. State Indicators
LCD Icon
Indicated Object
State
Meaning
Day recognition
Steady on
Day time
Night
recognition
Steady on
Night time
Solar panel
Steady on
Solar panel indication
BOOST
Charging state
Steady on
Boost charging
FLOAT
Steady on
Floating charging
EQUATIZE
Steady on
Equalizing charging
Battery
Quick flashing
Battery overvoltage
Slow
flashing
Battery overvoltage
Battery SOC
4 dashes
100%
3 dashes
75%
2 dashes
50%
1 dash
25%
0dash
0%
Load
Steady on
Load turned on
Steady on
Load turned off
Quick flashing
Overload or short-circuit
protection
4. Five Load Working Modes
a. Pure light control (0): When sunlight disappears and the light intensity drops to the starting point (light control off), the
controller initiates a 10-minute delay (settable) to confirm the starting signal, and then switches on the load for operation.
When sunlight emerges and the light intensity reaches the starting point, the controller initiates a 1-minute (fixed) delay to
confirm the shutting-down signal, and then shuts down the output to stop the load's operation.
b. Light control + time control (1 to 14): The starting process is the same as pure light control. After operating for a preset
period of time (settable from 1 to 14 hours), the load stops operation automatically.
c. Manual mode (15): In this mode, the user can switch the load on or off by the keys, no matter whether it's day
or night.
d. Debugging mode (16):
When the solar panel voltage is higher than the "light control off" voltage, switch off the load immediately; when t
he solar panel voltage is lower than the "light control on" voltage, switch on the load immediately.

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e. Normal on (17): The energized load keeps in output state.
LED
Display
Mode
LED
Display
Mode
0
Pure light control mode
9
Light control + time
control (9 hours)
1
Light control + time
control (1 hour)
10
Light control + time
control (10 hours)
2
Light control + time
control (2 hours)
11
Light control + time
control (11 hours)
3
Light control + time
control (3 hours)
12
Light control + time
control (12 hours)
4
Light control + time
control (4 hours)
13
Light control + time
control (13 hours)
5
Light control + time
control (5 hours)
14
Light control + time
control (14 hours)
6
Light control + time
control (6 hours)
15
Manual mode
7
Light control + time
control (7 hours)
16
Debugging mode(default)
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Light control + time
control (8 hours)
17
Normal on mode
5. Load Working Mode Settings
In the load mode menu, long press for 2s, and the number (e.g. 15) will begin to flash. Press to adjust the mode
(from 0 to 17), and then long press again for 2s to complete and save the setting.
Note: 1. After parameter adjustment, if is not pressed and held long enough for exiting , the system exits to the main menu
after 12s, and the parameter that was set is not saved.
When the system is saving data, the screen may shake slightly. This is normal and the user may ignore it.
6. Safety Advice
When connected to a 24 V or 48V system, the solar panel terminal voltage may exceed the limit for human safety. If
operation is to be performed, be sure to use insulation tools and keep your hands dry.
If the battery is reversely connected, the controller itself won't be damaged, but the load end will have a negative voltage
output, which may damage your load device. Take care not to let thishappen.

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In the 48V system, separate reverse connect battery or separate reverse connection of solar panel controller will not damage;
but if in reverse connection of the battery and is connected solar panels, or solar panels on the reverse connection is
connected to the battery may cause damage to the controller.
The battery contains a large amount of energy. Therefore, in no cases should the battery be short circuited. It's recommended
that a fuse be serially connected to the battery.
Keep the battery away from fire sparks, as the battery may produce flammable gas.
Keep children away from the battery and controller.
Follow the safety advice provided by the battery manufacturer.
7. LCD Screen Illustration
8. Browsing Menu on LCD Screen
Continuously press ,the screen will display the following in order: "main menu"---"solar panel voltage"---" solar panel
current"---"battery capacity"---"battery voltage"---"discharging current"---"charging amp-hrs"---" dischargingamp-hrs"---"
temperature inside controller"---"load mode"---" load modesettings"---"error code", and then back to "main menu". If the keys
are notoperated for 12s, the system will automatically return to display the "main menu".

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9. Setting Menu on LCD Screen
When "load mode" is displayed, long press to enter into the load mode setting. Press
to adjust the mode, and long press for 2s to save and exit; or else, the system will not save the setting that
was just made and automatically exit the setting interface after 12s.
10. Battery Types, Charging Voltages (Lithium Battery), Over-Discharge
Return and Over-Discharge Voltage Settings
In the non-load mode menu:
1) When is long pressed ,the first interface entered is for battery type setting, and the flashing one is the battery type
currently selected. Press to select among FLD/GEL/SLD/LI.
2) After selection, short press to enter into over-discharge return and over-discharge voltage settings;or the first to enter
charging voltage setting menu for lithium battery.
3) After parameters have been set, long press for 2 s to save and exit.
parameters shall be set according to the following rule: over-discharge voltage ＜ovover-discharge return voltage ＜
=under-voltage warning ＜floating charging voltage ＜boost chcharging return ＜=equalizing charging voltage ＜
overcharge voltage; and two adjacent values shall have a difference greater than 0.5 V.
11. Charging and Discharging Overload Protection and Recovery Time
In the charging and discharging overload protection mechanism, the relation between overload current and
protection time is as follows: An overload current 1.25 times of the rated current initiates a delay of 30s before
starting protection; similarly, 1.5 times, 5s and 2 times, 1s.
Overload recovery: automatic recovery after 1 minute.

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12. Load Short Circuit and Recovery
Short-circuit automatic recovery time: 1st time, 5 s; 2nd time, 10 s; 3rd time, 15 s; 4th time, 20 s; 5th time, 4
hours or automatic recovery the next day; or long press to make the load resume output.
13. Communication Port Line Sequence (Only for Controllers with Communication Functions)
Controller communication port RJ12 (6-pin)
14. Installation Instructions and Precautions
1. The controller shall be installed
securely, and its dimensions are
as follows:
2. Installation hole diameter: 3.2 (mm)
CCSP3024/4024 External dimensions: 164.0×103.5×47.0 (mm)
Installation dimensions: 154×85 (mm)
CCSP5024/6024 External dimensions: 189.27×127.2×54.0 (mm)
Installation dimensions: 180×92.2 (mm)
CSSP3048/4048 External dimensions: 189.27×127.2×54.0 (mm)
Installation dimensions: 180×92.2 (mm)
CCS-P3024/4024
CCS-P4024/5024 CCS-P3048/4048

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3. Precautions:
①If it is 12V system, the bottom left corner of LCD display will show 12V, 24V system will show 24V,36V syst
em will show 36V, 48v system will show 48V.
②The first step is to connect the battery. If the connection is made correctly, the controller screen will light up; otherwise,
check whether the connection is correct.
③The second step is to connect the solar panel. If sunlight is present and strong enough (the solar panel voltage
is greater than battery voltage), the sun icon on the LCD screen is on; otherwise, check whether the connection is
correct (it's recommended that the operation be performed under the debugging mode).
④The third step is to connect the load. Connect the load leads to the controller's load output terminal, and the
current shall not exceed the controller's rated current.
⑤As the controller will generate heat during operation, it's recommended that the controller be installed in an environment
with good ventilation conditions.
⑥Choose cables with large enough capacity for connection, in case too much loss incurred on the lines causes
the controller to misjudge.
⑦The controller has a common positive pole inside. If grounding is needed, ground the positive pole.
⑧It's important to fully charge the battery regularly. At least once full charging every month is recommended, and failure to
do that may cause permanent damage to the battery. Only when in-flow energy outpaces out-flow energy can the battery be
charged fully. Users shall bear this in mind when configuring the system.
⑨Check whether the controller's each connection terminal is tightened securely; if not, it may suffer damage when large
current passes.
15. Error Code List
Code on LCD screen
Corresponding error
E0
No error
E1
Battery over discharge
E2
Battery overvoltage
E3
Under voltage warning
E4
Load short circuit
E5
Load overload
E6
Temperature too high inside controller
E8
Charging current too high
E10
Solar panel input voltage is too high

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16. Common Problems and Solutions
Symptoms
Causes and Solutions
LCD screen does not light up
Check whether the battery is correctly connected.
Incomplete display or no renewal on LCD screen
Check whether the ambient temperature is too low and
whether the display recovers when the temperature rises.
No charging with sunlight present
Check whether the solar panel is correctly connected and
contact is good and reliable. Check whether the solar
panel voltage falls below the battery voltage.
The sun icon does not light up, while the solar panel
icon does. The battery voltage is normal, but there is
no output.
The load will be switched on automatically after 10
minutes (set by the user).
The battery icon flashes quickly, and there is no
output.
System overvoltage. Check whether the battery voltage is
too high.
The battery icon flashesslowly, and there is no
output.
The battery is over-discharged, and will recover when
recharged adequately.
The load icon flashes quickly, and there is no
output.
The load's power exceeds the rated value or it's
short-circuited. After removing the problem, long press
the key or wait until it recovers automatically.
The load and the encircling light ring stays lit, and
there is no output.
Check whether the power-consuming device is connected
correctly and reliably.
Other symptoms
Check whether wiring is sound and reliable, and system
voltage is correctly recognized.
The charging and discharging amp-hrs displays:
9999.K Ah
The decimal point flashes indicating that the displayed
value has reached its upper limit. Long press to
reset it.
17.Parameter Details
Model
CCS-P3024/4024
CCS5024/6024
CCS3048/4048
Remarks
Rated current
30A/40A
50A/60A
30A/40A
System voltage
Automatic recognition of 12V/24V
Automatic recognition of
12V/24V/36V/48V
Default
automatic
identification
Manual setup
Rated power
12V/450W
24V/900W
12V/600W
24V/1200W
12V/750W
24V/1500W
12V/900W
24V/1800W
12V/450W
24V/900W
36V/1350W
48V/1800W
12V/600W
24V/1200W
36V/1800W
48V/2400W

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No-load loss
< 13mA/12V；< 15mA/24V
<30mA
The lower the
system
voltage, the
smaller the
no-load loss.
Max. Solar
energy input
voltage
<55
<110V
Max. voltage
at the battery
end
<34V
<68V
Battery type
Parameters
Flooded
FLD
Sealed
SLD
GEL
GEL
Lithium
LI
Default
SLD
Overvoltage
protection
16．0V
×1/12V；
×2/24V；
×3/36V；
×4/48V；
Equalizing
charging
voltage
14.8
14.6
-
-
Boost charging
voltage
14.6
14.4
14.2
14.4
Floating
charging
voltage
13.8
13.8
13.8
-
Charging
recovery
voltage
13.2V
Over-discharge
recovery
voltage
12.5V（settable with the keys）
Over-discharge
voltage
11.0V（settable with the keys）
Equalizing
charging
interval
30days
-
-
Equalizing
charging time
1H
-
-
Boost charging
time
2H
-
Temperature
compensation
-3.0mV/℃/2V
-
Light
controlvoltage
Light control on 5V, light controloff 6 V (light control on plus 1 V)
×1/12V；
×2/24V；
Light control
10 minutes

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judgment time
×3/36V；
×4/48V；
USB function
Yes
optional
No
Bluetooth
function
optional
Operating
temperature
-25℃to+55℃；
IP protection
degree
IP30
Net weight
390g
650g
650g
Protection
functions
Battery plate reverse connection protection note 1, a battery reverse connection
protection note 2, charging battery board short circuit protection, charging the battery
open circuit protection, charging over current protection, overload protection, load
short-circuit protection controller and over temperature protection.
Dimensions
164.0×103.5×47.0(mm)
189.27×127.2×54.0
(mm)
189.27×127.2×54.0 (mm)
Note 1 & 2: CCS3048/4048 reverse connect panels, please do not connect battery at the same time; When the battery
reverse connect, please do not connect panels at the same time. Otherwise it may cause damage of controller.