DOKIO SC2430D Smart Solar Charging Controller User Manual
- August 2, 2024
- DOKIO
Table of Contents
DOKIO SC2430D Smart Solar Charging Controller
Specifications
- Product: Smart Solar Charging Controller
- Main Function: Control the charging and discharging of battery in off-network solar systems
- Features:
- Solar panels can power USB devices separately
- Humanized liquid-crystal display with double-button operation
- High-efficiency smart three-gradation charge with pulse width modulation
- Optional load control mode with timing function for street lamps
- Over-voltage, short-circuit, over-load, over-charge, and over-discharge protection
- Precise temperature compensation for battery charging and discharging
- Reverse connection protection
Product Usage Instructions
Dear Users:
Thanks for choosing our product. Please read this Manual carefully prior to
using this product. The controller is used for off-network solar system to
control the charging and discharging of battery. Its main function is to
protect battery. The smart charging process has been optimized for the purpose
of extending service life of battery, which has improved system performance.
Main Function
- Solar panels can provide power for USB device separately.
- Humanized liquid-crystal display, human-computer interface is equipped with double-button for operation.
- Complete technical data of installation and modification.
- High-efficiency smart three-gradation charge with pulse width modulation.
- Control mode of load is optional with a timing function of street lamp at night and manual discharging control. as rated current of controller)
- Display the charging and discharging current.
- Reliable over-voltage protection, short-circuit protection, over-load protection, over-charge protection and over-discharge protection.
- Precise temperature compensation with a automatic calibration of charging and discharging voltage.
- Improve the service life of battery.
- Comprehensive reverse connection protection.
Important Information
-
Please install the controller indoors.
If the controller is installed outdoors, please keep the environment dry and avoid a direct sunlight.- In case that the controller will emit heat in the course of working, please keep the environment ventilated and stay away from inflammable materials.
- Please take care when the open-circuit voltage of solar battery panel is high.
- Please install the battery upright due to the fact this battery has acidic electrolysis. Please wash with water in case of accidentally contacting with electrolysis.
- Please avoid reverse connection or short-circuit connection under 48V system, or which may cause damage to product.
- It is prohibited to cause the positive and negative short circuit by any conductor due to the batter power is large.
It is recommended to install safety fuse between battery and controller. (Slow-action type. The safety fuse of action current should be 1.5 times greater than the current rating of the controller.)
Use Recommendation
- The controller can regulate charging voltage through detecting the environmental temperature, thus try to keep controller close to battery.
- It is recommended to use the cables with the electric current density of system less than 3A/mm2.
- Warning loose cables or the connection of corrosive cables may cause melting of the wire insulation due to an increasing resistance, which may burn surrounding materials and even cause a fire.
- Please fully charge the battery every month, otherwise the battery will be damaged.
Feature of Liquid Crystal Graphic Display
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Night indication of controller: If the input voltage of solar battery panel is identified by controller as lower than the photovoltaic starting value, this graphic symbol will be displayed.
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Daily indication of controller: If the input voltage of solar battery panel is identified by controller as higher than the photovoltaic starting value, this graphic symbol will be displayed.
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Parameter indication of photovoltaic panel: This graphic symbol will be lightened when displaying the data of solar battery panel. For example, the voltage of solar battery panel.
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Battery parameter indication: This graphic symbol will be displayed when indicating the battery parameter, e.g. battery voltage, battery temperature etc.
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Load parameter indication: This graphic symbol will be displayed when indicating the load parameter,
e.g. discharging current, discharging timing etc. -
System voltage: The controller will automatically regulate technical data when LCD displaying different system voltages.
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Digital display area.
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Timer setup function.
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Graphic symbol of switch.
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Unit symbol value.
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Warning: This graphic symbol will be displayed when appearing failure.
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Load status indicator: turn on .
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Output power indicator: This graphic symbol will be displayed when outputting power.0
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Battery capacity indicator: Battery bar may vary when the battery capacity is different.
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Charging status indicator: This graphic symbol will be displayed in case of charging controller. This graphic symbol will not be displayed if not charging.
Installation and Connection:
- Ensure correct connection of solar battery panel to the controller.
- Install the controller indoors to avoid damage from outdoor elements.
- Connect the load to the controller after turning off the output by pressing the button.
Fastening of Controller
The controller should be installed in a place with a good ventilation.
Avoid direct sunlight and high temperature. Please don’t install the
controller in a place where water may enter.
Controller Connection
As shown in Figure, please connect the battery on binding post of
controller. Please fasten the cable of battery on controller in advance prior
to connecting on binding post of battery to avoid short-circuit. LCD display
will indicate the battery voltage and other technical data in case of correct
connection. Please check any failure in case of no LCD display. The cable
length between battery and controller should be as short as possible, it is
recommended from 30cm to 100cm. Connect the cables of controller and battery
prior to connecting the cable of solar photovoltaic panel. Please pay
attention to the polarity of solar panel.
If the terminal of controller has a short-circuit, which may cause a fire or explosion. Please take care. (We strongly recommend to install the safety fuse for connecting battery: 1.5 times as much as rated current of controller)
- As shown in Figure, LED will display the solar battery panel in case of sufficient sunlight and correct connection between solar battery panel and controller. The arrow from solar battery panel to battery panel will be displayed.
The voltage of solar battery panel is high, please connect the controller of solar battery panel correctly. Under 24V system, the reverse connection of solar panel may cause damage to solar charging controller. In order to avoid injury of load voltage, please turn off the output of controller by pressing button prior to connecting the load to controller. Please take care due to the controller doesn’t provide reverse connection protection of load.
- Grounding of solar battery panel
Please note that this solar charging controller is designed to have a common positive connection with the positive electrodes of all components are assembled together. If your solar system needs to be grounded, please connect the positive grounding.
Warning: In terms of some grounding systems, e.g. solar communication system, portable solar system etc., their negative grounding has been connected. Please don’t connect the positive grounding, otherwise it may cause a short-circuit.
Operation and Display (Main Interface)
- There is one-second initialization after turning on the controller, it will display the rated current prior to entering the main interface.
- Under the main interface, press key to display the battery voltage, solar battery penal voltage, load current, charging current and environmental temperature.
- Under the main interface, press key to turn on or off the load output.
- Under the main interface, long press key for 3 seconds to enter the menu.
Accumulative charging power (AH)
This parameter indicates the accumulative charging current value of solar
battery panel. Please long press key for a minimum of 3seconds under this
interface, and the timer will be reset.
Accumulative discharge power (AH)
This parameter is the accumulative discharging current value. Please long
press key for a minimum of 3 seconds under this interface, and the timer will
be reset.
Floatingvoltagesetup
This parameter is the floating voltage. The controller will start function
of pulse width modulation at this voltage point, which will limit the voltage
rise. Long press key for 3 seconds under floating voltage interface, the
number will flash, and it will enter the setup status. Release the button,
press key for operation of adding data, and press key for operation of
deducting data. Upon completing required technical data, long press key for 3
seconds, the parameter will be saved and the system will exit setup status. If
there is no operation after 20 seconds, the system will automatically return
to main interface.
Over-discharge recovery voltage
If the battery voltage is low, controller will stop providing power to load.
If the controller needs to reconnect output, the battery voltage should be
higher than the over-discharge voltage or press key to release compulsorily.
Setting method is same as (C).
Discharge protection voltage
The load output will be cut off in case of low battery voltage. If the
controller detects that the battery voltage is lower than discharge protection
voltage, it will immediately cut off the load output. Meanwhile, the
controller will be in a locking status. Users must charge the battery. The
load recovers output if the battery voltage is higher than over-discharge
recovery v Setting method is same as (C). In terms of C, D and E, the
designers have a thorough consideration on the default data of these three
parameters. According to the actual using status, users don’t need to
regulate. Please refer to the recommendations of battery suppliers, otherwise
the battery may be damaged or have an irreparable destruction.
Load working mode selection
The controller’s default working load is 24 hours. If the load working time is
set up as 24 hours, the load will work 24 hours under no failure status; If
the working time is set up as no more than 23 hours, it indicate that the load
starts timing function. The load will start at sunset if the battery capacity
is sufficient. It will work within the time set up by timer or stop working
before sunrise. The setting methoLoad working mode is same as (C).
Under the load timing mode, if the setting working time is more than the actual night time. The load output will be automatically turned off in case of sunrise, even though the working time is short of setting time. For example, the actual local night time is 10 hours, users reset the night working time is 12 hours. The output will be automatically turned off upon 10 hours, and the timer will be reset. It will process the next sunset signal.
Battery type selection
This controller will select the battery type applying to a wide voltage demand
of users. The default type is B1 lead-acid maintenance-free battery. Users can
select other battery types according to their needs. Please refer to the Table
below for various battery parameters, and the Figure below for setting
methods.
Safety Precautions:
- Keep the environment ventilated if the controller emits heat during operation.
- Avoid direct sunlight exposure if the controller is installed outdoors.
- Install the battery upright to prevent electrolysis leaks.
Battery Type and Parameter
Protection Function
Battery low-voltage protection
If the battery voltage is lower than discharge protection voltage, the battery
low-voltage protection will start. Output power is cut off, the battery symbol
and warning light will flash. After recharging, the battery voltage is higher
than discharge recovery voltage, the load will automatically recover output or
press key to compulsorily unlock.
Overload short-circuit protection
The short-circuit protection will start in case of load short-circuit. Load is
cut, and LOAD, 8888A, warning symbol will flash. Delay 30 seconds after
removing the short-circuit failure, it will automatically recover load output.
Load over-current protection
If the load current is 10 seconds higher than rated current, the over-current
protection will start. Load is cut off, and LOAD, rated current value and
warning symbol will flash. Delay 30 seconds after removing the over-current
failure, it will automatically recover load output.
Solar panel over-voltage protection
When connecting the solar battery panel, the controller will judge whether the
connected solar panel voltage is high according to the system voltage (Maximum
voltage is 25V under 12V system, maximum voltage is 50V under 24V system
maximum voltage is 100V under 48V system). If the solar voltage is high, this
controller will not charge the battery. Meanwhile, solar voltage, solar symbol
and warning symbol will flash.
Common Failure and Solution
Failure Possible Reason Solution
LCD has no response ▶ Battery voltage is low Please confirm battery voltage after connecting with ▶ Reverse connection of battery ‘Reconnect with controller with
battery positive and negative anodes battery
No solar symbol after Solar battery panel has Please check cable of solar connecting solar panel, open circuit, short circuit or battery panel. Please
LCD has no charging reverse connection of reconnect in case of correct symbol positive and negative anodes connection
Controller indicates Controller load output Please check whether load has a short load short-circuit terminal may has a short circuit, and reconnect the load
circuit
Controller indicates loa Load power exceeds rated Please reconnect after reducing over-current protection power of controller or the load power
connects with inductive load
Please check open-circuit voltage of Controller indicates Open- circuit voltage of solar battery panel, replace with the excessively high solar solar battery panel is appropriate solar battery panel, or voltage excessively high regulate the system voltage to 12V,
controller has no high-voltage protection
Parameter Sheet
Maintenance
- Wash with water if accidentally exposed to electrolysis.
- Regularly check for reverse connections or short circuits under 48V system.
FAQ
Q: Can this charging controller be used for on-grid solar systems?
A: No, this controller is specifically designed for off-network solar systems.
Q: How can I protect against overloads when using this controller?
A: The controller features over-load protection, but it’s recommended to
install a safety fuse between the battery and controller for added protection.
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