Clas Ohlson LS1024EU User manual

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12/24V Solar
Charge Controller
Batteriregulator 12/24V
Akun ohjausyksikkö 12/24V
Laderegler 12/24V
Art.no Model
36-6201 LS1024EU Ver. 20160816

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12/24V Solar Charge Controller
Art.no 36-6201 Model LS1024EU
Please read theentire instruction manual before using theproduct and then save
it for future reference. We reserve theright for any errors in text or images and any
necessary changes made to technical data. In theevent of technical problems or other
queries, please contact our Customer Services (see address details on theback).
Safety
• Never try to open thehousing, repair or modify thecontroller in any way. This product
contains no user-serviceable parts. Do not attempt to replace or repair any parts yourself.
• Theinstallation of external fuses/circuit breakers may be required.
• Do not install in locations where water can enter thecontroller.
• Check that all theconnections are tight.
Product description
1. Charging status LED indicator
2. Load status LED indicator
3. Charge level LED 1
4. Charge level LED 2
5. Charge level LED 3
6. Charge level LED 4
7. [ ] Power/Setting button
8. Mounting hole
9. USB output (only active when
thecontroller is on)
10. Solar panel connections
11. Battery connections
12. Load connections

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Charging and load status indication chart, indicator 1 and 2
Indicator Indication Status Note
Charging status
(indicator 1)
On Charging Normal
Flashing quickly Overvoltage Refer to theTroubleshooting
guide section below
Load status
(indicator 2)
Steady glow Load device on Normal
Off Load device off Normal
Flashing slowly Load current is
too high
Reduce load
Flashing quickly Short circuit Refer to theTroubleshooting
guide section below
Battery charge status indication chart, LED indicator 1–4
Note:
Thevalues in thechart below are applicable to 12 V DC at 25 °C.
For 24 V DC thevalues should be doubled.
LED 1 LED 2 LED 3 LED 4 Battery status
Flashing slowly Off Off Off Low voltage, battery nearly discharged
Flashing quickly Off Off Off Battery fully discharged
During battery charging
LED 1 LED 2 LED 3 LED 4 Battery status
On On Off Off 12.8 V ˂Ubatt ˂13.4 V
On On On Off 13.4V ˂Ubatt ˂14.1V
On On On On Ubatt ˂14.1 V
After completed charging
LED 1 LED 2 LED 3 LED 4 Battery status
On On On Off 12.8 V ˂Ubatt ˂13.4 V
On On Off Off 13.4V ˂Ubatt ˂14.1V
On Off Off Off Ubatt ˂14.1 V

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ba
c
d
f
e
Mounting and installation
Note:
• Make sure that you have read and understood theentire instruction manual before
installing thecontroller.
• This controller must only be used together with 12 V or 24 V AGM, Gel-cell,
sealed or standard lead-acid batteries.
• Be very careful when working with batteries. Wear eye protection. Have clean
water available and wash immediately if you come into contact with battery acid.
• Always use insulated tools and never place metal objects onto thebattery.
• When they are being charged, certain batteries (ask at place of purchase) may emit
explosive gases. Ensure that thebattery is placed in awell-ventilated area.
• Do not install thecontroller where it can be exposed to direct sunlight, moisture or rain.
• Make sure that all connections are tight and free of corrosion. Ensure that all
cables are of thecorrect dimension and securely fastened with cable ties or similar.
• This instruction manual describes how thecontroller is used together with asingle
battery. Thecontroller can also be used with multiple batteries in abattery bank.
• Keep thelength of cable between thebattery and thecontroller as short as possible,
max 1.5 m. Thecross-sectional area of thecable should be at least 3.5 mm².
Installation
Install thecontroller in awell-ventilated place.
Wiring
Note: Thebattery, solar panel and load device must be connected to thesolar
charge controller in theorder shown below in order for thecontroller to operate
correctly. Thebattery (connections aand b) must be connected first so that it can
automatically set itself to either a12V or a24V system.

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1. Install thecontroller on adry, flat and heatproof surface.
2. Connect thecables (aand b) from theconnections on thecontroller (11) to
thepositive (+) and negative (–) terminals of thebattery. Protect thebattery by
installing afuse close to thepositive terminal. Never use afuse with agreater
current rating than thecurrent rating of thecontroller (10A).
3. Connect thecables (c and d) from thesolar panel to theconnections on
thecontroller (10) observing thecorrect polarity. Cover thesolar panels when
connecting thecables to prevent sparking.
4. Connect thecables (e and f) from theconnections on thecontroller (12) to aload
device, observing thecorrect polarity. Turn off all load devices when connecting
thecables to prevent sparking. Never use more current than therated charging
current of thecontroller (10 A). Install afuse on thepositive (+) side of theload
device connection. Never use afuse with agreater current rating than thecurrent
rating of thecontroller (10A).
Operation
Switching on/off
1. Switch theload output on by pressing [ ] (7).
2. Press thesame button again to switch off thecurrent to theload device.
Setting thebattery type
1. Hold in [ ] for more than 5 seconds. The LED indicator/s will begin flashing
displaying the last battery setting.
2. Use short presses to toggle to your current battery type.
3. Wait 5 sec until the LED display pattern becomes solid and corresponds to your
current battery type. Settings are now complete.
LED 1 LED 2 LED 3 Battery type
On Off Off Sealed lead-acid battery
On On Off GEL/AGM battery
On On On Flooded lead-acid battery
Safety features
Overloading and short-circuiting
Thecontroller has abuilt-in electronic safety feature which cuts off thecurrent to
theload device outputs in theevent of anoverload or short circuit in theload device.
In order to restart thecontroller following anoverload/short circuit, first disconnect
theload device and then press the [ ] button.
Note: In some cases it might be necessary to disconnect both thebattery and
thesolar panel from thecontroller to ensure that it is completely de-energized
before being able to restart it after it has been overloaded.

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Reverse-polarity protection
Thecontroller is protected from reverse polarity which means that it won’t be damaged if
theterminals of thebattery are connected to thewrong connections on thecontroller.
Temperature sensor
If thetemperature sensor in thecontroller is damaged, thecontroller will operate
based on thedefault ambient temperature of 25 °C.
High voltage transients
Thecontroller is protected from high voltage surges but should still be protected from
lightning strikes by installing alightning conductor close to thesolar panel.
Troubleshooting guide
Thecharging status
LED indicator (1) is off
despite sun falling on
thesolar panel.
Check all connections and cables to thesolar panel
and battery.
Thecharging status
LED indicator is
flashing quickly.
Battery voltage too high. Disconnect thesolar panel if
theindicator does not return to normal indication after
ashort time.
LED 1 (3) flashing
slowly.
Battery voltage too low. Disconnect load devices and wait
for battery voltage to return to normal level.
LED 1 (3) flashing
quickly.
Battery almost fully discharged. Disconnect load devices
and wait for battery voltage to return to normal level.
Load status LED
indicator (2) flashing
slowly.
Overload. Disconnect theload device/s causing theoverload.
Press [ ], thecontroller will restart after 3 seconds.
Note: In some cases it might be necessary to disconnect
both thebattery and thesolar panel from thecontroller to
ensure that it is completely de-energized before being able
to restart it after it has been overloaded.
Load status LED
indicator (2) flashing
quickly.
Short circuit. Disconnect theload device/s causing theshort
circuit. Press [ ], thecontroller will restart after 10 seconds.
Note: In some cases it might be necessary to disconnect
both thebattery and thesolar panel from thecontroller to
ensure that it is completely de-energized before being able to
restart it after it has been short-circuited.
No LED indicator. Battery fully discharged. Measure thebattery voltage with
amultimeter. At least 6V is required for thecontroller to
start charging thebattery.
All connections are
correct but thecharging
status LED indicator is
not on.
Measure thecharging voltage from thesolar panel, it must
be higher than thebattery voltage.

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Responsible disposal
This symbol indicates that this product should not be disposed of with
general household waste. This applies throughout theentire EU. In order
to prevent any harm to theenvironment or health hazards caused by
incorrect waste disposal, theproduct must be handed in for recycling
so that thematerial can be disposed of in aresponsible manner. When
recycling your product, take it to your local collection facility or contact
theplace of purchase. They will ensure that theproduct is disposed of
in anenvironmentally sound manner.
Specifications
Nominal system voltage 12/24 V DC
Maximum battery voltage 32V DC
Rated battery current 10A
Charge circuit voltage drop ≤ 0.13 V
Discharge circuit voltage drop ≤ 0.17 V
Internal consumption ≤ 6 mA
Temperature
compensation coefficient −5 mV/°C/2 V, for 12 V battery −30 mV/°C
USB output 5 V, 1.2 A
Operating temperature −35 to 55°C
Storage temperature −35 to 80 °C
IP rating IP20
Size 120×67×22 mm
Weight 103g
Note: Thevalues below pertain to a12V battery at 25 °C. Thevalues should be
doubled if a24V battery is used.

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Charging limits
Charging Parameters
Set battery type
Sealed
lead-acid
battery
Gel
Flooded
lead-acid
battery
Over Voltage Disconnect Voltage 16V 16V 16V
Charging Limit Voltage 15V 15V 15V
Over Voltage Reconnect Voltage 15V 15V 15V
Equalize Charging Voltage 14.6V ------- 14.8V
Boost Charging Voltage 14.4V 14.2V 14.6V
Float Charging Voltage 13.8V 13.8V 13.8V
Boost Reconnect Charging Voltage 13.2V 13.2V 13.2V
Low Voltage Reconnect Voltage 12.6V 12.6V 12.6V
Under Voltage Warning Reconnect Voltage 12.2V 12.2V 12.2V
Under Voltage Warning Voltage 12V 12V 12V
Low Voltage Disconnect Voltage 11.1V 11.1V 11.1V
Discharging Limit Voltage 10.5V 10.5V 10.5V
Equalize Duration 2 hours ------- 2 hours
Boost Duration 2 hours 2 hours 2 hours
Charging cycle
The battery charger has a 3-stage charging cycle (Bulk Charging, Constant Charging and
Float Charging) which allows the battery to be charged quickly, correctly and completely.

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Bulk Charging (A)
The battery is charged with maximum current until the battery has reached approxi-
mately 80 % full capacity. (The limit for the Boost or Equalize mode).
Constant Charging (B)
The battery charger switches to charging the battery with a constant voltage which
results in a gradual reduction in the charging current. The charging voltage depends
on whether the battery charger is in Boost or Equalize mode:
Boost
The battery is given a topping charge for up to 2 hours. This is done by charging the
battery with a gradually reducing charging current which saturates the battery for
maximum capacity.
Equalize
Once a month the battery charger will select to recondition the battery (not AGM/
GEL). This is done by charging the battery with a higher than normal voltage. Re-
conditioning the battery desulphates the plates of the battery and hinders the stratifi-
cation of the battery acid.
Float Charging (C)
The battery is maintenance charged with a constant low voltage. If the battery is put
under load and the terminal voltage drops, a new charging cycle will begin.
Temperature Compensation Coefficient
Description Parameter
Temperature Compensation Coefficient (TEMPCO)* −5mV/°C/2V (ref)
Thecontrollerwillequalizethebatteryonce amonth.