National Luna NLDC-25 User manual

Index
Introduction
Safety Information
External features
Preparing for Installation
Fitting the NLDC-25
Universal Mounting Fixture
Typical Installation diagram
Installation steps
Selecting battery type
Ignition over-ride
Temperature compensation
Remote monitor
Remote monitor operation
Remote monitor warning messages
Application examples
Specifications
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SAFETY INFORMATION :
ŸBefore installation, read the instructions carefully.
ŸBefore installation, disconnect any existing batteries.
ŸThe NLDC-25 is used for charging 12V lead-acid and automotive Lithium batteries only.
ŸDo not use for any purpose other than battery charging.
ŸDo not attempt to power any devices or instruments directly using the output of NLDC-25.
ŸDo not attempt to charge a non-rechargeable or battery other than 12V.
ŸNever attempt to charge a damaged battery or leaking battery.
ŸAvoid open flames in the vicinity of the battery.
ŸBattery acid is highly corrosive. If your skin or eyes come into contact with acid, immediately rinse
the affected area with water and seek medical advice.
ŸDo not alter or disassemble the NLDC-25 under any circumstances.
ŸUnauthorized disassembly, repairs or modifications will void any warranty.
ŸAttempts to use the NLDC-25 for purposes other than indicated in this manual will void the warranty.
ŸEnsure all connections are secure and cables are installed in a safe manner.
ŸUse the correct cabling size and fuses in accordance with the installation instructions.
The NLDC-25 from National Luna is a DC to DC battery charger and isolator for a dual-battery system.
It will charge an auxiliary or service battery from a vehicle alternator or Solar panel up to 25A output current.
Traditional 12V and 24V vehicle alternators as well as variable voltage alternators are supported.
The integrated MPPT solar regulator provides a maximum output power of 375W but can support solar panels higher than this.
Solar panel voltages up to 42V can be connected.
The NLDC-25 features a 6-stage charge algorithm that is suitable for any Lead-Acid battery type as well as automotive Lithium-Ion batteries.
3 safety stages analyse the battery and can detect batteries that are damaged and unable to accept charge.
Temperature compensation is used to optimise the output voltage, ensuring safe and full battery charging under various conditions.
The NLDC-25 supports the connection of a remote monitor that displays information about the system and battery levels to the user on a
high-contrast LCD screen.
The NLDC-25 has a IP67 rating for harsh environments and is protected against reverse-polarity, over-voltage, over-temperature and
over-current conditions.
NLDC-25 Dual Battery Isolator and Charger
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NLDC-25 External features
1 - NL-DC25 Metal Base
2 - Remote monitor connecting port
3 - Status display
4 - Removable top cover
5 - Temperature compensation input
6 - Ignition over-ride input
7 - Removable terminal block
8 - Terminal block - Auxiliary battery output
9 - Terminal block - Common ground connections
10 - Terminal block - Alternator input
11 - Terminal block - SOLAR panel input
12 - Mounting feet
Status Display
1 - Battery type selection button
2 - Battery type indicator
3 - OK / Fault indicator : Green = OK, Red = Fault
4 - Input source indicator (ALT or SOLAR)
5 - Charge stage indicator
NLDC-25 Features
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DC-DC Battery Charger
Battery
Float
Li-ion Wet
Ca+ AGM/Gel
Charge
OK /
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ŸThe NLDC-25 should be located close to the auxiliary battery for best voltage regulation.
ŸThe NLDC-25 can operate in harsh environments but it is best installed in a location that is cooler with adequate ventilation.
ŸAvoid areas exposed to harsh or corrosive chemicals, excessive dust, extreme heat or mechanical movement.
ŸThe NLDC-25 can be installed vertically or horizontally.
ŸDo not block or obstruct the cooling fins on the NLDC-25.
ŸAllow clearance around the NLDC-25 for cables and ventilation.
ŸIt is normal for the NLDC-25 to get hot during operation, keep any objects that are heat-sensitive away from the NLDC-25.
ŸIf the temperature compensation probe is used, it must be able to reach the auxiliary battery.
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ŸIt is recommended to use 16mm cables for connections to the main and auxiliary batteries. Smaller gauge cables can be used for short
distances.
ŸIn-line fuses must be fitted in the positive cables close to the respective main and auxiliary batteries.
ŸUse the common ground connections on the terminal block for all negative cable connections.
ŸUse appropriate cable lugs for the cable size used.
Preparing for Installation
Removing the top cover
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In order to select the battery type and to install the
temperature compensation & ignition over-ride
wires, the top cover will need to be removed.
Loosen the two screws as indicated in order to
release the cover.