nor-tec EL24i-16 User manual


Operation manual
Battery charger and trickle charger 24V
for wall mounting
EL24i-16
DC 24V 16A / DC 24V 2A // AC230V 50/60Hz
Version: 11.2019
Copyright © 2019
Nortec Electronics GmbH & Co. KG
An der Strusbek 32 B
D-22926 Ahrensburg
Tel.: +49 / 4102/42002
Fax. +49 / 4102/42840
E-Mail: [email protected]
Web: www.nortec.de
Operation manual EL24i-16

Page2 © Nortec-Electronics 2019
Contents
1 Technicaldata...........................................................................................3
2 Generalinformation..................................................................................5
3 Safetyinstructions.....................................................................................6
3.1 Intendeduse......................................................................................6
3.2 Safetyinstructions.............................................................................6
3.3 Disposal.............................................................................................8
4 Connectionandcommissioning................................................................9
6 FunctionbatteryLOAD............................................................................11
6.1 Preliminarynote...............................................................................11
6.2 Chargeablebatteriesandchargingcharacteristics.........................11
7 Opticalindicators.....................................................................................14


EL24i-16 Operation manual

© Nortec-Electronics 2019 Page3
1 Technical data
Typ: EL24i-16.1310
Manufacturer: Nortec Electronics GmbH & Co. KG
An der Strusbek 32 B
D-22926 Ahrensburg
Tel.: +49 / 4102 / 42002
Fax: +49 / 4102 / 42840
Email: [e-mail]
Web: www.nortec.de
Mains voltage: 230V ±10% / 50-60Hz
Output voltage charge: 28.8VDC ±1% (constant voltage at 20°C)
Output current main charge: 16A ±5% (constant current)
Trickle charging: 26.4VDC, max. 2A ±5%
Output current
trickle charging: 2A ±5% (constant current)
Battery types: Ansmann AG LiFePo4 battery pack (article
Z0600660)
Battery capacity: 5.0Ah
Indicator lights: 4LEDs for „MAINS“, „CHARGE“,
„TRICKLE CHARGE“ and „FAULT“
Protection: IP65
Signal output: 3 outputs switched via relays
(maximum load 1A)
Electrical safety: according to EC Low Voltage Directive
Operation manual EL24i-16

Page4 © Nortec-Electronics 2019
Operating temperature: -25 to + 40°C, (at higher operating temperature the
output power is reduced)
Storage temperature: -40 to +85°C
Humidity: <(95-5)% at TU = 55°C
Dimensions (LxBxH): 320 x 210 x 145mm
Weight: 7.4kg
Declaration of conformity: CE conformity
Mains connection: Connection cable 5m long with earthing contact
plug with double protection contact system
(SCHUKO)
Charge cable: 5m with open end
Pin 1 + (brown); Pin 2 - (blue)
Reporting line: Removable 5m with open end
(sensing port) Pin 1 = brown; Pin 2 = white; Pin 3 = blue;
Pin 4 = black
Warranty period: 24 months

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page5
2 General information
We congratulate you on the acquisition of the EL24i-16
This robust housing combines two functions:
 Battery charger
 Battery tricklecharger
State-of-the-art microprocessor technology ensures that your battery is
optimally charged with the UIUa characteristic, which guarantees maximum
battery life. The UIUa characteristic is recommended by leading battery
manufacturers. The experience of many years of observations of battery
charging and charging in large fleets (partly with stored vehicles) is
consistently implemented in this device in modern charging technology. An
intact deeply discharged battery is brought back to the best possible state of
charge and held there. It does not have to be opened or separated from the
vehicle. Defective batteries are detected automatically.
Light emitting diodes keep you informed about the status of the battery and
the device at all times.
Operation manual EL24i-16

Page6 © Nortec-Electronics 2019
3 Safetyinstructions
Please read the operating instructions carefully before first use and keep
them in a safe place.

3.1 Intendeduse
The charger is designed to charge 24V the Ansmann AG LiFePo4 battery
pack (article Z0600660). The charger can be connected directly to the bat-
tery with clamps or via suitable plug connectors.
The EL24i is approved for private and commercial use.
Each device is tested for all functions before delivery and delivered in a safe
and secure condition. When used as intended, the device is safe to operate.
3.2 Safetyinstructions
The battery charger EL24i-16 should only be operated in perfect condition
while observing the operating instructions. The safety and operating
instructions must be observed.
In the case of operator errors or misuse, there are risks for:
 body and life of the operator,
 the equipment and other property of the operator,
 the function of the device.
All persons involved in the installation, commissioning, operation,
maintenance and upkeep of the device must:
 be appropriately qualified,
 pay close attention to these operating instructions and
 follow the applicable rules for occupational safety.
Unauthorized intervention or manipulation of the device is not permitted.
Furthermore, the local safety regulations must be observed.

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page7
Nortec Electronics is not responsible for any damage caused by improper
connection. Never connect 230V to the battery connection cables.
Charging non-rechargeable or mechanically damaged batteries may cause
the battery to explode.
Avoid any contact with battery acid. If you come into contact with battery
acid, wash the affected area thoroughly. If eyes come into contact with
battery acid, rinse them with running water or an eyewash device and consult
a doctor.
Charging a battery can cause the release of gases. These gases are
flammable and explosive! Do not get close to batteries with sparks, open
flames or cigarettes. Always ensure adequate ventilation of the batteries
during charging.
The safety instructions of the battery manufacturer Ansmann AG
must be strictly adhered to.
The battery charger may only be opened and repaired by the man-
ufacturer, by authorized repairers or by individual agreement with
Nortec Electronics.

Maintenanceandsafetyregulationsofthebattery
manufacturers!
- Allmaintenanceworkonbatteriesmustonlybe
carriedoutbysuitablyqualifiedpersonnel.


Weareyeprotectionandprotectiveclothingwhen
workingonbatteries!
- Observetheapplicableaccidentprevention 
regulations.

Avoidcontactofacidswitheyesorskin!
- Incaseofemergency,rinseimmediatelywith
plentyofwater.
- Thenconsultadoctorimmediately.
Operation manual EL24i-16

Page8 © Nortec-Electronics 2019

Dangerouselectricalvoltage!
- Donotlayanymetaltoolsorobjectsonthe 
battery.
- Donotwearmetalornamentssuchasrings,
watches,beltsorjewelry.
- Disconnectmainsvoltagebeforeopeningthe 
device.
- Donotmanipulatethedevice.



Explosionandfirehazard!
- Whenchargingbatteries,ahighlyexplosive 
oxyhydrogengasmixturecanarise.
- ‐Avoidsparkingandshortcircuits:useonly 
insulatedtools,donotlaymetallicobjectsonthe
batteryordropthem.
NoSmoking!

Followinstructionsforbatteryusage!
- Attachthesevisiblynearthebattery.
- Payattentiontothedangersarisingfrom 
batteries.
Batteriesmustnotbedisposedofwithhousehold
waste!
- Youarelegallyobligedtoreturnoldbatteries,so
thataproperdisposalcanbeguaranteed.


3.3 Disposal

Donotthrowthepackagingandtheproductinthehouseholdwaste!Theproduct
andpackagingaremadeofreusablematerials(plastics,metals,paper).Disposeof
anunusableproductinanenvironmentallyfriendlymannerinaccordancewith
localregulations. 

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page9
4 Connection and commissioning
Before connecting the device, check that the specified mains voltage on the
type plate of the device is the same as that available to you. These are
230V/50Hz.
Due to the circuit design of the EL24i-16, no special sequence is required for
operation and connection. We recommend the following procedure. It pro-
vides you with the most efficient information.
1. Plug the device into a power outlet. A brief flash on and off of the LED
indicators confirms that the device has successfully completed its self-test
and is ready to be charged. The green LED lights up.
2. Connect the device to the battery with the correct polarity.
blue or No. 2 = battery minus
brown or No. 1 = battery plus
The sensing port M8 is for external monitoring and is assigned as follows:
Operation manual EL24i-16

Page10 © Nortec-Electronics 2019
Pin 1 = brown Pin 2 = white Pin 3 = blue Pin 4 = black

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page11
6 Function battery LOAD
6.1 Preliminarynote
Proper battery charging is the first requirement for a long battery life. The
device present here treats Ansmann AG LiFePO4 battery pack (article
Z0600660) in an optimal way.
Please remember that only a full battery can be stored.
After reaching the end-of-charge voltage, this is left by the device on the
battery until the charging current drops to a predetermined value (here 2A) -
the battery is optimally fully charged.

Attention!
Unlike to the charger for lead acid batteries, another program is in-
stalled here. A deeply discharged lithium battery does not supply any
output voltage. Therefore, a voltage is always applied to the lithium
program charger to allow a fully discharged lithium battery to start
charging again. The current is limited to 2 A to protect the contacts of
the vehicle. As soon as power flows into the battery, the charging
process starts with 16 A and the LED charging lights up.
6.2 Chargeable batteries and charging characteristics
The EL24i-16 battery charging and maintenance charger is designed for
charging and subsequent trickle charging of Ansmann AG LiFePO4 battery
pack (article Z0600660) with a rated voltage of 24V and a rated capacity of
5.0Ah designed.
The battery charger and trickle charger EL24i-16 is equipped with an IUa
charging program (for deep-discharged batteries UIUa-charge) with the
following charging areas:
 Charge divided into main charge and
 Trickle charge
Operation manual EL24i-16

Page12 © Nortec-Electronics 2019
Current and voltage curve when charging a deeply discharged 24V battery
Typical charging voltage curve
I‐Charge U‐Charge Trickle‐Charge
Pre‐Charge
Tension
Current
16A
16A
2A
16A
2A

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page13
Notes
The charging functions cannot be selected separately but provide a closed
functional sequence. This is started when the device is switched on.
The entire charging process starts automatically:
 after switching on the supply voltage with connected battery,
 after mains failure and return of the supply voltage,
 If the lower turn-on voltage of 25.4V during the trickle charge e.g. is
exceeded by connecting consumers for more than 10 seconds.
Charging cables and batteries must be checked for contamination and per-
fect mechanical and electrical condition before connection.
Operation manual EL24i-16

Page14 © Nortec-Electronics 2019
7 Opticalindicators

EL24i-16 Operation manual

© Nortec-Electronics 2019 Page15
 MAINS:
o Mains available, green LED "Power OK" lights
 Internal function test: all indicator lights light up for approx. 1 second
 CHARGE:
o "Main charge": yellow LED lights up permanently
 TRICKLE CHARGE:
o "Monitoring phase" and "Charging phase": green LED lights
up permanently
 FAULT:
o "Device error": red LED flashes - device defective and for
repair
o "Battery error": red LED lights permanently - no or defective
battery connected