KT SOLAR KT70780 User manual

PWM SOLAR CONTROLLER
USER MANUAL
Thank you for choosing KT Solar’s 12V & 24V Compatible PWM Solar
Controller.Please refer to this user manual before using or installing this
product.
Models available to the range:
KT70780 - 5A 12V - 24V PWM Solar Controller
KT70781 - 10A 12V - 24V PWM Solar Controller
KT70783 - 20A 12V - 24V PWM Solar Controller
KT70784 - 15A+15A 12V - 24V Dual PWM Solar Controller
Compatible Battery Types
AGM, WET, CALCIUM, GEL, LTO, LiFePO4, Li-ion
Operational Instructions
Once your PWM Solar Controller is connected to a solar power source
and/or a battery, the LCD display back-lighting will illuminate. Power
source and battery voltages will display and the solar controller is now
ready for setting battery chemistry and charging.
Setting Battery Chemistry Type
Press Set button once to activate setting mode, KT logo will begin to
flash. For Single PWM Solar Controllers (5A, 10A & 20A), a list of types of
batteries light up for selection by operating Up or Down Arrow buttons.
For 15A+15A Dual PWM Solar Controller press Left Arrow button to set
Battery A. A full list of battery chemistry types illuminate for selection.
Or, press Right Arrow button to set Battery B, a full list of battery
chemistry types illuminate for selection.
Press Up or Down Arrow buttons to select battery type. The selected
battery type will flash on and o. Press Set button to confirm selection.
For 15A+15A Dual PWM Solar Controller, press Set button to confirm
setting after both battery types are selected. KT logo will stop flashing
on and o, and will remain solid upon battery selection confirmation.
The setting will stay in memory, even after disconnection, unless
settings are reset.
Note: AGM is the default battery type. The system will automatically
turn o the back-lighting and exit setting mode in 30 seconds when
no setting action is detected.
Warning: Incorrect battery type setting may result in a malfunction
of solar controller and cause damage to your battery. It is highly
recommended to select the correct battery chemistry type once
connected to avoid damage of the batteries.
Display
The LCD display cycles through ‘Real-time’ charging data in the below
sequence at dierent intervals:
Cycle Sequence: Solar Source > Battery A > Battery B.
When Battery A or B is not connected, the system omits its interval by
skipping to the next interval.
15 Seconds for Solar Source: VOC (Voltage Open Circuit) 5 seconds +
Charging Input Voltage 10 Seconds, meanwhile Total Charging Current
Input 15 seconds;
15 Seconds for Battery A: Battery A Voltage 15 seconds, Battery A
Charging Current 10 seconds, Charging AH 5 seconds, Battery A
Temperature is displayed throughout the cycle of 15 seconds only if the
provided temperature probe is connected;
(Battery B only relative to 15A+15A Dual PWM Solar Controller)
15 Seconds for Battery B: Battery B Voltage 15 seconds, Battery B
Charging Current 10 seconds, Charging AH 5 seconds, Battery B
Temperature is displayed throughout the cycle of 15 seconds only if the
provided temperature probe is connected.
LCD Backlighting turns o in 60 seconds when one cycle of display is
complete. Touch any key to turn on the backlighting.
Ampere Hour: This unit detects and displays charging ampere hour of
each charging process, reaching its maximum digit at 199AH (when AH
becomes greater than 99.9AH, the display omits the decimal point and
digit behind to display a three-digit integer). AH data will refresh itself
once the battery is disconnected.
Temperature reading displays as ‘---’ until provided 5m temperature
sensors leads are properly connected to the solar controller and battery.
It is compulsory to connect temperature sensor between this solar
controller and any type of Lithium battery.
Throughout the charging process, a flash sign above each battery icon
and battery percentage bars will flash. ‘Full’ will display when a battery
is fully charged. Refer to table below for percentage details of each type
of battery type:
Sign “A” displays next to temperature digits when ‘Battery A’ data is on;
For 15A+15A Dual PWM Solar Controller Sign “B” turns on next to
temperature reading when ‘Battery B’ data is on display.
Charging Stages
TRICKLE: This regulator will trickle charge an over-discharged battery
below 0% ( refer to table above) however, no less than 7V at minimal
current to “waken up” the battery, until the battery reaches at the lowest
boost charging point. At this stage, the Flash (Lightening Bolt icon)
above battery icon flashes.
BOOST: This stage is a constant current charging process that contin-
ues until the battery is 75% charged. BOOST indicates on the display.
ABSORB: This is a constant voltage charging stage between 75% and
fully charged. Charging current decreases as the battery voltage rises.
ABSORB indicates on the display.
FLOAT: When the battery is charged up to its nominal full capacity (i.e.,
13.8V for AGM), this solar controller reverts to FLOAT charging mode with
minimal charging current until fully charged at 14.3V (AGM).
FULL: When the battery is fully charged to its maximum capacity (i.e.,
14.3V for AGM), FULL is displayed and the battery percentage bars and
charging sign ‘Flash’ (Lightning Bolt icon) stops flashing, then will remain
solid. Charging will stop for 1 minute.
MAINTAINING FLOAT: When the battery is discharged below its nomi-
nal full capacity (i.e., 13.8V for AGM), this regulator maintains the battery
by charging it at a rate equal to its self-discharging rate. Both signs FULL
and FLOAT stay on, Flash (Lightning Bolt icon) flashes intermittently at
this stage.
PWM Solar Controller User Operational Manual
Suited to Model No. KT70780, KT70781, KT70783 & KT70784
Page 1 of 2
15+15A Dual PWM Solar
Controller Display
5, 10, 20A
Single PWM Solar
Controller Display

Internal Temperature Protection
• When the internal working temperature reaches 85oC, the unit will
stop the charging process. The LCD backlighting will flash and an
Over-Temperature icon will indicate.
• When internal working temperature reduces to 65oC charging
will restart at full capacity.
Battery Temperature
• External temperature detection and display is activated once the
5m temperature probes provided are correctly connected to the
solar controller and battery.
• When battery temperature reaches at 65oC, battery protection
kicks in, charging stops and the display will begin to flash.
• Charging will restart when the battery temperature drops down to
45oC.
• Warning: when any type of Lithium battery is connected to the solar
controller, it is MANDATORY to connect the provided temperature
probe/probes between the solar controller and each battery. The
charging process will not start whilst the temperature
sign “—” flashes blank.
Single Regulator Current Rating Modification:
• Press and hold Down Arrow for 5 seconds to display ‘current
rating’ and enter amperage setting mode;
• Once in Amperage setting mode, quick press Down Arrow to
change current from higher ratings to lower ratings. For instance, a
20A rated unit can be set at 10A, or 5A; a 10A rated unit can be set
at 5A. The controller will not be able to be set at a lower amperage
rated unit to a higher amperage. For instance, a 10A unit cannot be
set as 20A; a 5A unit cannot be set as a 10A or 20A unit.
• Press and Hold Down Arrow for 5 seconds to confirm setting and
exit amperage setting mode.
• Throughout this process, press any key to exit without saving
changes.
Safety Protection Features
• The smart programming of each solar controller prevents a battery
from being overcharged.
• This solar controller is built with polarity protection
• This solar controller has short circuit protection.
• This solar controller prevents over-current charging.
• It is strongly recommended that a 45A fuse to be connected to
solar panels and batteries. The solar controller protects itself, but
not the solar panel and battery connected to it. Once Input and/or
Output current reach 45A, the solar controller will “burp” at 50Hz
until the short circuit and/or overcurrent issue is fixed.
• This solar controller prevents current flowing back from batteries to
solar panel.
• This solar controller provides temperature protection. It will stop
charging and flashes its LCD display backlighting when working
temperature reaches 85oC. Charge process resumes when
working temperature drops down to 65oC, backlighting stops
flashing.
• This solar controller and its temperature probes protect batteries
by ceasing the charging process when the battery temperature
rises to 65oC, backlighting and Over-temp will flash.
• Charge process restarts when battery temperature drops down to
45oC. This solar controller permanently stops the charging process
when the battery reaches 65oC for the third time.
• Warning: when any type of Lithium battery is connected to this
solar controller, it is MANDATORY to connect provided 5m
temperature probe/probes between the solar controller and each
battery, and ensure that the correct battery chemistry type has
been selected to avoid battery damage or explosion.
PWM Solar Controller User Operational Manual
Suited to Model No. KT70780, KT70781, KT70783 & KT70784
Page 2 of 2
Warranty Guarantee
This product carries an unconditional 12 Month Warranty against
defects under the terms of the manufacturers warranty. Should the
manufacturers warranty not comply with Australian Consumer Law,
AECAA Pty Ltd Trading as Automotive Electrical & 4WD Accessories will
provide a warranty against defects for 3 years from date of purchase on
the following terms:
a ) For valid claims, Automotive Electrical & 4WD Accessories will
replace the product free of charge.
b ) The warranty excludes defects from after sale damage, neglect,
abuse, failure to comply with information provided in this manual, or
incorrect installation. You, the purchaser, must bear all transportation
costs to and from Automotive Electrical & 4WD Accessories.
c ) The benefits of this warranty are in addition to any other rights and
remedies available at law.
d ) Our goods come with guarantees that cannot be excluded under
the Australian Consumer Law. You are entitled to a replacement or
refund for a major failure and for compensation for any other reasonably
foreseeable loss or damage. You are also entitled to have the goods
repaired or replaced if the goods fail to be of acceptable quality.
For warranty claims:
a ) Return the product with receipt and original packaging (if available) to
the store in which the product was originally purchased.
b) Email our team at [email protected] with details of the
products defects and our team will assist with a resolution.
Feedback
KT Solar design and innovate our own products based on market and
consumer demand, and always welcome any feedback on our products
and services. If you would like to provide us feedback, you can do this
by:
a) Sending our team an email at [e-mail] or
b) Following our Facebook & Instagram Pages ‘@ktsolaraus’ and leave
us a review
c) Contacting our team directly by phone:
East Coast - QLD, NSW, ACT, VIC, TAS: [phone]
West Coast: WA, NT, SA [phone]
We also welcome you to share any images you have of your installations
on our social media pages (Facebook and Instagram). Our team post
daily and may re-share your installation photos with our +80K followers!
To learn more about KT Solar products and services,
visit www.ktcables.com.au.
Alternatively, to learn more about Automotive Electrical & 4WD
Accessories, visit www.ae4a.com.au
Product Care
• This product is rated to IP65. Do not submerse this unit, or subject
to constant water spray or rain.
• To clean this product, simply use a damp cloth and gently wipe any
dirt or dust o the unit.
• Do not mount this product in engine bays.
• Do not mount solar controller directly to the back of
monocrystalline solar panels. This can cause de-rating.