CTEK I2440 User manual

EN
EN • 3
CONGRATULATIONS
on the purchase of your new professional switch mode battery charger. This charger is
included in a series of professional chargers from CTEK SWEDEN AB and represents the
latest technology in battery charging.
• Connect AC cable according to national regulations.
• Important: Fixed installation has to be carried out by certified installation and in accord-
ance to local regulations.
• Mount the charger on a firm surface. Fix the charger with screws in the four holes. Use
suitable screws or fixings. Allow space around the charger to not interfere with air
cooling.
• The charger is manufactured and constructed for industrial use and is used for 230V
only.
• I2420 and I2440 can be left connected for unlimited periods of time with no risk of
damaging the battery.
• There is a built-in temperature sensor to ensure that the charger won’t overheat.
• The charger is programmed with a generic lead acid charge algorithm. If special charg-
ing requirements, the algorithm can be changed using the service tool accessory (not
included).
Andersson
connector, 50A
DC cableLED display
Earthed AC cable
without plug
FEATURES
• 24 V, 20/40A
• Suitable for all Lead-Acid and Lithium-ion (LiFePO₄, LFP)
• Programmable for different algorithms
• Records 200 charge cycles, accessible with the service tool accessory
• Easy to read LED and remote LED accessory
• Automatic reconditioning for deeply discharged batteries.
• Temeperature compensated charge voltage
• Drive Off protection
• 94% effency
• IP64 rated
Read safety instruction and this user
instruction before use of the charger
Communication-
cable, RJ45
INTRODUCTION
MANUAL

4 • EN
224 mm135,5 mm
236 mm
148 mm 4 x R3
193 mm
DIMENSIONS I2420 DIMENSIONS I2440
80 mm
74 mm
23,75 mm
32,50 mm
41,25 mm
151,75 mm
160,50 mm
169,25 mm
52,5 mm
0
232,5 mm
285 mm

EN
EN • 5
CABLE LENGHTS
AC cable 1700 mm
DC cable 500 mm
INDICATOR
CHARGER EXPLANATION INDICATOR ACCESSORY
Green light
Mains connected, no battery connected.
Green light
Green light Battery fully charged, charger in battery
maintenance mode
(please see "CHARGING CURVE")
Green light
Yellow light
After charge.
Constant voltage while current is reduced
No light
Yellow light
Absorption charging.
Constant voltage while current is reduced
Yellow light
Yellow light
Bulk charging. Constant current charging.
Voltage is rising.
Yellow light
Red light
Battery error!
Red light
SYMBOLS
Battery fully
charged
Absorbtion
charging
Bulk charging
Error
Quick flashing
lamp
Slow flashing
lamp
Steady green
light
No light
Communication cable
450 mm

6 • EN
STEP 1 SOFT START
Tests if the battery can accept charge. This step prevents that charging proceeds with a defect
battery.
STEP 2 DESULPHATION
Detects sulphated batteries. Pulsing current and voltage, removes sulphate from the lead plates
of the battery restoring the battery capacity.
STEP 3 BULK
Charging with maximum current until approximately 80% battery capacity.
STEP 4 ABSORPTION
Charging with declining current to maximize up to 100% battery capacity.
STEP 5 FLOAT
Maintaining the battery voltage at maximum level by providing a constant voltage charge.
STEP 6 PULSE
Maintaining the battery at 95–100% capacity. The charger monitors the battery voltage and
gives a pulse when necessary to keep the battery fully charged.
The I2420/I2440 charger can be customized with other algorithms using the Service Tool
accessory (not included).
CHARGING CURVE
SOFT START DESULPHATION BULK ABSORPTION FLOAT PULSE
Current (A) Voltage (V)
Max 3.0A
until 23.2V
Max current 28.0V
100 ms pulses
Max current
until 28.8V
Declining current
28.8V Max current 27.2V Max current 25.6V–28.0V
Time limit: Max 4h 1 sec Max 20h Max 16h
10days
Restart from Bulk if
voltage drops below
25.2V
Restart from Bulk if
voltage drops below
25.2V

EN
EN • 7
TECHNICAL SPECIFICATION
I2420 I2440
Model number 1320 1340
Input 220–240VAC, 50–60Hz, max 3A 220–240VAC, 50–60Hz, max 7A
Output 24V, 20A 24V, 40A
Start voltage 0.5V 0.5V
Back current drain* Less than 1Ah/month Less than 7Ah/month
Ripple** Less than 4% Less than 4%
Ambient temperature -20°C to +50°C (-4°F to +122°F)
Battery types All types of 24V lead-acid batteries (WET, MF, Ca/Ca, AGM, GEL) and Lithium-ion (LiFePO₄, LFP)
Battery capacity 40–300Ah 100–1500Ah
Dimensions See DIMENSIONS
Insulation class IP64
Weight 1,4 kg 3,0 kg
Warranty 2 year
*) Back current drain is the current that drains the battery if the charger is not connected to the mains. CTEK chargers has a very low back current.
**) The quality of the charging voltage and charging current is very important. A high current ripple heats up the battery which has an aging effect on the positive electrode. High voltage ripple could harm other equipment that
is connected to the battery. CTEK battery chargers produce very clean voltage and current with low ripple.
LIMITED WARRANTY
CTEK issues this limited warranty to the original purchaser of this product. This limited warranty
is not transferable. The warranty applies to manufacturing faults and material defects. The
customer must return the product together with the receipt of purchase to the point of purchase.
This warranty is void if the product has been opened, handled carelessly or repaired by anyone
other than CTEK or its authorised representatives. CTEK makes no warranty other than this
limited warranty and is not liable for any other costs other than those mentioned above, i.e.
no consequential damages. Moreover, CTEK is not obligated to any warranty other than this
warranty.
SUPPORT
For support, FAQ, latest revised manual and more information about CTEK products:
www.ctek.com.