MEC-Energietechnik Nova-750 User manual

phone: [phone] / 55 100 | fax: - 11 | e-mail: [e-mail] | Web: www.mec-energietechnik.com
-- Instruction manual --
Nova-750
Lithium-based battery charger
Version / MEC Art-No.
-- Li-Ion -- -- LiFePo4 --
Version Order No. Version Order No.
7S 29.4V / 25A 175-07253-470IS 8S 28.8V / 25A 176-08253-470IS
10S 42V / 17A 175-10173-470IS 12S 43.2V / 17A 176-12173-470IS
12S 50.4V / 14A 175-12143-470IS 14S 50.4V / 14A 176-14143-470IS
14S 58.8V / 13A 175-14133-470IS 16S 57.6V / 13A 176-16133-470IS
Dear Customer!
Thank you very much for your trust in us and our product.
Please read these operating instructions carefully before start of operation.
MEC-Energietechnik GmbH
1. Safety Rules and General Warnings
Persons, which are not able to use the device in a safe way, because of their physical, sensory or mental competence, or
because of their inexperience, should not use the charger without control or instruction of a skilled person.
100- 240 Volts alternating current, device is not suitable for children –Danger of life!!!
Ensure for enough air ventilation while charging!
The charger is exclusively designed for rechargeable Lithium-based batteries and must not be used for other purposes.
Please consider the charging instructions from the battery manufacturer before charging!
DO NOT OPEN the device! Repair work must only be accomplished by authorized companies or specialized technical staff.
If the mains connection of the device is damaged, it must be replaced with an original wire which is available at the manufac-
turer or costumer service.
Never place the device on top of the battery while charging!
Protect against direct solar radiation and temperatures over 40°C.
In case of obvious damage or malfunction disconnect the device from mains supply and protect against unintended reconnec-
tion.
The DC cable must not be cut, shortened or extended
The charger is not designed for higher environments as IP 65

MEC –Energietechnik GmbH INSTRUCTION MANUAL Nova-300IS
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2. General Information
This microprocessor based IP-65 Lithium Battery Charger was especially developed for the outdoor use and for situations where
water may be present. It can be used to charge any Lithium- based battery.
With the 4-step charging program the battery will be charged safely in a fully automatic mode. The output of the charger is elec-
tronically protected against short circuit. The charger is able to recover deep-discharged batteries.
Coloured LED’s are used to indicate charging status and errors.
3. Special Features
Passive cooled IP65 aluminium housing
Short circuit protection
LED’s to indicate operation and charging status
4-Step charging technology with automatically restart charging
Automatic shut-off at too high temperature
Indicating a non-chargeable (‘dead battery’) condition
4. Product Figure
1 Protective vent 5 Power LED (green) * 9 Charge enable (blue)
2 Error LED (red) 6 IR LEDs * 10 Ignition Lock (white)
3 Full LED (green) 7 + DC-wire (red) * 11 Display Terminal
4 Charging LED (yellow) 8 - DC-wire (black) 12 Power Cable (AC)
*= Version dependent

MEC –Energietechnik GmbH INSTRUCTION MANUAL Nova-300IS
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5. Charging cable - polarity
WARNING: Please check polarity before mounting a plug
- Red cable = Plus (+)
- Black cable = Minus (-)
6. Operation
ATTENTION:
The DC cable must not be cut, shortened or extended
Before operating please make sure that the power cable and the charger including the charging cable show no damages and
make sure that the mains supply complies with the specification.
Please consider the charging instructions from the battery manufacturer before charging.
If you want to connect the charger to the battery, please have a look to the following points:
Make sure that the device is switched off and disconnected from the mains.
Make sure that the charger is connected to the battery.
Connect the charger to mains supply.
7. Charging the battery
The charging process starts automatically and runs through the following four charging phases:
1. charging phase: Auto Wake-Up
This charging step is indicated by blinking alternately of the Charge-LED (4) and Full-LED (3).
Explanation: The precharge phase starts automatically at deeply discharged batteries (where the BMS is off). During the pre-
charge phase, the charger use controlled current pulses. That tries to reactivate the BMS and bring the battery in a voltage where
it is possible to start the charging process.
2. charging phase: soft start
This charging step is indicated by constant lighting of the Charge-LED (4).
Explanation: During the soft start phase the charger reduces charging current, in order to extend battery lifetime.
3. charging phase: constant current
This charging step is indicated by blinking slowly of the Charge-LED (4).
Explanation: During the constant current phase, the battery is being charged to 80% of its capacity.
4. charging phase: constant voltage
This charging step is indicated by blinking quickly of the Charge-LED (4).
Explanation: During the constant voltage phase the battery is being charged to its maximum capacity.
If the Full-LED (4) is constant lighting, the battery has reached the full capacity. Should the battery stays on charger the auto-
matic restart, starts after 30 days or the battery voltage is under 3.8V/cell (LiIon-Battery) or 3.1V/cell (LiFePo4-Battery).
Disconnect the charger from the battery:
a) Disconnect the charger from the mains supply;
b) Disconnect the charger from the battery;
Charging advice:
If the charger will be disconnected from the battery during the charging process, the charge current will be interrupted imme-
diately. In that case please disconnect the charger from the mains supply. For starting a new charging process please comply
with the relevant points (see pt.5)
For increasing the lifetimes of the battery please do not stop a charging process before the battery is fully charged. The
charger will automatically stop the charging process

MEC –Energietechnik GmbH INSTRUCTION MANUAL Nova-300IS
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8. Errors and Troubleshooting
Table 1: General errors:
Error description
Solution
No LED lighting or blinking after connecting mains
Check if charger is connected to mains supply
Check function of mains supply
Red Mains- LED is on, charger is connected to battery
and the charging process don’t start
Check connection to battery
Check if battery is damaged or deeply discharged
Error-LED blinking (N x blinking / 2 sec pause)
Please see the table below for error description
Table 2: Error-LED blinking signals:
Blinking signal
Error description
1 x
Battery damaged
2 x
Battery voltage is too high or wrong battery connected
5 x
Charger temperature is too high as charging
9. Technical Specifications
Version
MEC Art.-No.
Input
Charging volta-
ge
max.
Charging
current
max.
Operating
tempera-
ture
Protec-
tion
class
IP-
Code
Dimensions
Weight
Li-Ion
7S
175-07253-470IS
100-240VAC
50-60Hz
29.4VDC
25A
-30°C
to
+40°C
I
IP65
LxWxH
[mm]
217x225x105
ca. 4.8kg
10S
175-10173-470IS
42.0VDC
17A
12S
175-12143-470IS
50.4VDC
14A
14S
175-14133-470IS
58.8VDC
13A
LiFePO4
8S
176-08253-470IS
28.8VDC
25A
12S
176-12173-470IS
43.2VDC
17A
14S
176-14143-470IS
50.4VDC
14A
16S
176-16133-470IS
57.6VDC
13A
10. Advice for Disposal
It is prohibited to dispose the charger into the house- and residual waste removal (WEEE-Richtlinie
2002/96/EG und EAG-VO) , it must be disposed at the according collection points. For the protection of
our environment please inform yourself at your communal adminstrative agency about your nearest
disposal point.
The charger equates to the RoHS-directive 2002/95/EG, for the restriction of the use of certain
hazardous substances in electrical and electronic equipment.
11. Disclaimer of Warranty
The warranty period (see our GTC) starts with device being dispatched by the manufacturer. The MEC-
Energietechnik GmbH is accepting liability by guaranteeing to working hours and spare parts only.
For damages caused by non-observance of the operating instructions, inappropriate start up or handling as well
as reconstructions and modifications of the device, the warranty claim expires and MEC-Energietechnik GmbH
assumes no liability for consequential damage to property or persons!
Subject to technical modifications. We assume no liability for misprints.
MEC-Energietechnik GmbH, Energiestrasse 3, A-9500 Villach
E-Mail: [email protected] http:// www.mec-energietechnik.com