Selectronic LD700-24 User manual

LD700-24 Operating Manual
Serial No _____________________________ Purchase Date ______________
Note - Your warranty can only be valid once your warranty card is completed and returned to Selectronic Australia

LD700-24 Volt Owners Manual
Contents
Page No.
Introduction
1
Warranty Card
1
Installation
1
Batteries and Connections
4
Getting Started Quickly
6
Parts Identification
6
Operation
7
STATUS Indicators
7
Demand Start Setting
9
Low Voltage Shutdown Setting
10
Maintenance
11
Inverter
11
Batteries
11
Handy Hint
12
Radio Frequency Interference
13
Fault Finding
14
Product Warranty Conditions
15
Specifications
16
Selectronic Service Network
Back Cover
Legend for Symbols
Warnings and
electrician‟s notes
Hints and Pointers

Examples

LD700-24 Manual Selectronic Australia
1
Introduction
Thank you for choosing to purchase the Selectronic LD700-24 TRUE
SINE WAVE inverter. Many hours of Research and Development have
gone into the LD700-24 to ensure this inverter provides you with many
years of reliable service
Warranty Card
It is imperative that you complete your warranty card NOW. Your LD700-
24 is covered by a TWO-year warranty; this warranty is in addition to your
rights under the trade practices act of your state or territory.
Returning you completed warranty card will enable us to register your
warranty and avoid any possible delays should service be required. If you
have any comments about our product that will not fit on the warranty card
please feel free to drop us a line. Yes, constructive criticism will also be
welcome.
Installation
200mm
200mm
200mm
LD700-24
Inverter
Front
200mm
LD700-24 Inverter
Please leave a clearance of 200mm on all sides and top of the Inverter.
The LD700-24 must be installed in a dry, cool, dust-free environment.
It is recommended that the inverter be placed as far from any radio
receivers as possible.

LD700-24 Manual Selectronic Australia
2
Large amounts of DC current can be drawn by your LD700-24, care must be
taken.
Fixed Installation
All fixed installation battery connections must be securely bolted,
using stainless steel nuts and bolts. To protect the connection from
corrosion smear a small amount of Vaseline or similar over the
joint. Never place batteries directly onto a concrete floor, place
timber or similar material beneath the batteries.
LD700-24
Inverter
Battery Bank
*System Fuse
To Load
* A system fuse (of at least 35 Amps) should be placed before the battery.
An HRC motor start type is recommended. (See your system designer for
details).
Warning As a matter of safety, Selectronic strongly recommend that all fixed
installations be designed and installed by appropriately qualified person. The Solar
Energy Industries Association in your state or territory can provide names of accredited
system designers and installers.
All AC wiring MUST be carried out by an accredited electrician and must conform to
AS3000 and/or any relevant local standards.
The output voltage from an inverter is as lethal as mains electricity.
Electrician‟s Note
All earth‟s AC and DC should be bonded
RFI/Lightning Earth stake should be within 3m of the inverter
The LD700-24 is suitable for connection to MEN wiring
Any AC changeover switch must be a „break before make‟ type

LD700-24 Manual Selectronic Australia
3
Portable Use
By using optional battery clips, the LD700-24 can be connected directly to
a vehicle battery. When using Alligator clips ensure they have a tight grip
around the battery post. Wherever possible battery connections should be
bolted. If connecting the LD700-24 through a cigarette lighter socket the
maximum power output of the LD700-24 will be severely restricted, this
practice should be avoided. Check with your supplier or installer if you are
unsure.
Do not use alligator clips in a moving vehicle
Auxiliary Battery
Earth (to chassis)
LD700-24 Inverter
Start Battery
Earth (to chassis)
Isolator
Vehicle
Alternator
By incorporating an auxiliary battery in the manner above, the starting battery
should remain charged for vehicle starting (see your auto electrician).
The LD700-24 has sufficient battery cable length to allow it to sit underneath the vehicle
whilst in use. If the ground is wet, place the LD700-24 on a waterproof liner.

LD700-24 Manual Selectronic Australia
4
Batteries and Connections
Batteries are the key to maximum performance from your LD700-24, if a
battery is too small or not fully charged it may result in de-rated
performance from your LD700-24.
Battery ratings
Batteries can be rated in one of two ways:
1. CCA = Cold Cranking Ability. This is the amount of power or current
that a battery can deliver for a short period, typically a few seconds. This
how a car battery would normally be rated.
2. Ah = Ampere Hours. This is the maximum amount of energy that can be
stored in a battery; this figure will generally be stated at a particular hour
rate. This is how a deep cycle or storage battery would normally be rated.
100Ah @100hr, this means that when this battery is discharged over
a period of 100 hours, the battery has a capacity of 100Ah. This in
theory means 1 Amp for 100 hours, although this would in practice
result in a totally discharged battery that may not then recover.
To achieve maximum performance from your LD700-24 you must have a
battery capable of delivering 75 Amps for a short period whilst maintaining
at least 21.0 volts. To increase the capacity of your battery you may need to
join more than one battery together.
Where batteries are joined
in series, add the voltage of
each battery.
The capacity will equal the capacity of the smallest battery. 2 x 12
Volt 150 Ah batteries connected in series would have a total
capacity of 24 Volts –150 Ah.



LD700-24 Manual Selectronic Australia
5
Where batteries are joined
in parallel, add the capacities
together, the voltage will
remain the same as each
batteries voltage.
2 x 24Volt 150 Ah batteries connected in parallel would have a
capacity of 24 Volts –300 Ah.
Only use identical batteries when joining batteries together.
How long will my battery last
To work out how long your battery will last follow this basic guide.
This guide presumes commencing with a fully charged battery.
Take the total rating of the appliance being run
1 light globe 25watts
1 20 inch TV 67watts
1 VCR 30watts
Total load =122watts
Divide this figure (122) by 20 to know the approximate DC current draw
=6.1Amps
To convert this to Ampere hours, multiply by the number of hours used -
Say 1 hour =6.1Ah
So if we have a 150Ah battery, then with the above example we should have
150 minus 6.1 = 143.9 Ah remaining in the battery.
As a general guide never discharge a battery below 50%. The deeper
a battery is discharged on a regular basis, the less life you can expect
from the battery. The Ah rating of a battery will also be reduced if
the discharge current is higher than the rated discharge current. See
your battery specifications for full details.



LD700-24 Manual Selectronic Australia
6
Getting Started Quickly
If you want to get powered up quickly here are the 11 simple steps.
1. Familiarise yourself with the details in the first 6 pages on this manual.
2. Unpack the LD700-24 from the packaging.
3. Check unit for any damage that may have resulted during transport, if any
damage is evident report this to your supplier immediately.
4. Make sure the LD700-24 ON/OFF switch (12) is in the off position.
5. Connect battery positive wire (red) (10) to battery positive or battery fuse.
6. Connect battery neg. wire (black) (11) to battery negative or battery fuse.
7. Plug a 230 - 240V appliance into inverter front power point (8) but do not
switch on.
8. Turn ON/OFF switch (12) to ON.
9. After 3 seconds LED (1) will begin to flash. If no LEDs light, check for
correct connection to battery.
10. Turn power point (8) on
11. You‟re away.
LD700-24 Parts Identification
LED (1)
LED (2)
LED (3)
LED (4)
ON/OFF Switch (12)
LED (5)
Mode Button (7)
(8) Power Point/GPO
Positive (Red) Battery lead (6) can be viewed from the rear.
Negative (Black) Battery Lead (7) can be viewed from the rear.

LD700-24 Manual Selectronic Australia
7
Operation
Five LEDs are provided on the front panel to indicate a number of
parameters, and allow adjustment of some of these parameters.
LED (5) tells you what LED (1) –(4) is displaying as indicated on the front
panel of the LD700-24. Pressing Mode Button (7) will change the
information being displayed.
STATUS indicators LED (5) (green) flashing
When power is first applied LED (1) should flash.
When LED (5) (green) is OFF, this indicates the LED (1) –(4) is showing the
inverters STATUS, as per written notation to the right of the LEDs. In this
mode there are no adjustments to be made.
LED (1) Flashing indicated the LD700-24 is in Demand Start mode, this
indicates that no power is being drawn from the inverter so it has gone to
SLEEP to save power.
LED (1) Stays ON, the inverter has been commanded to provide power to
the load (e.g. a light switch has been turned on) so it has gone from SLEEP
mode to ON. Once the load has been removed (e.g. the light switch is turned
off) the inverter will wait 10 seconds and return to SLEEP mode.
It is good practice to have your LD700-24 in SLEEP mode as often
as possible. When the LD700-24 is in SLEEP mode it uses 0.03
amps from the battery, when the inverter is in the ON mode it uses
at least 0.50 amps from the battery.
The amount of power required to go from SLEEP to ON is adjustable and is
described on page 9.

LD700-24 Manual Selectronic Australia
8
LED (2) AC Overload should normally remain OFF. If the inverter shuts
down due to too much AC load being drawn from it then LED (2) will come
ON. The LD700-24 will remain in this condition for 1 minute after the AC
load has been decreased to a safe level. LED (2) will flash if the inverter
shuts down due to “time to shutdown”.
If the inverter remains in this condition after one minute, switch (12)
should be turned OFF and then back ON.
LED (3) DC Volts Low / High should normally remain OFF. If the inverter
shuts down because the battery volts are too high then this LED (3) will come
ON. It will remain ON until normal battery volts are restored.
If the inverter shuts down due to not enough battery volts, then LED (3)
will flash.
LED (3) will continue to flash until the battery volts have risen
sufficiently. In this case, charge the battery by starting the vehicle or using
a battery charger.
The low voltage point that the inverter will cut out is adjustable to suit your
particular battery, see page 10 for details of this adjustment.
LED (4) Temperature Overload should normally remain OFF. If the inverter
shuts down due to the heatsink getting too hot, then this LED (4) will come
ON. If the transformer is too hot then LED (4) will FLASH. The LED will
remain ON or FLASHING until the temperature has lowered to a safe level;
the inverter will then come back ON.
If this LED (4) is coming on regularly, either reduce the amount of load
on the inverter or try to move the inverter to a cooler location.

LD700-24 Manual Selectronic Australia
9
Demand Start Adjust LED (5) (green) ON
It is sometimes necessary to adjust the demand start sensitivity to overcome
what is called “Phantom Loads”. A phantom load is a load that tricks the
inverter into thinking it should be ON instead of in SLEEP mode.
The wiring of a house or a portable stereo system in standby are good
examples of a phantom load. These loads serve no purpose but yet can
increase battery drain by bringing the inverter ON. Hold the Mode button (7)
down until LED (5) comes ON, (approximately 1 second) indicating you are
ready to adjust this setting. The LD700-24 will leave the factory with a
setting of 4 watts. Now press the Mode button (7) until the desired value is
sought. LEDs (1) –(4) will return to Status after 20 seconds.
Demand Start
Watts
LED 1
LED 2
LED 3
LED 4
4 Watts
5 Watts
6 Watts
7 Watts
Slow Flash
Medium Flash
Fast Flash
ON
ON
ON
ON
8 Watts
9 Watts
10 Watts
11 Watts
Slow Flash
Medium Flash
Fast Flash
ON
ON
ON
ON
12 Watts
13 Watts
14 Watts
15 Watts
Slow Flash
Medium Flash
Fast Flash
ON
ON
ON
ON
16 Watts
Continuous
ON
ON
ON
ON
ON
After “continuous”, the next button press “rolls back” the demand start
setting to 4 Watts

LD700-24 Manual Selectronic Australia
10
Low Volts Adjust LED (5) (green) FLASHING
To avoid total discharging of your battery the LD700-24 shuts down at a pre-
set low voltage. As all batteries are different, so too is the minimum voltage
they should be discharged to. The LD700-24 will leave the factory with a
setting of 22.0 volts, change this setting if required.
Hold the Mode button (7) down until LED (5) is FLASHING, (approximately
2 seconds) indicating you are ready to adjust this setting. Now press the
Mode button (7) until the desired value is sought. LEDs (1) –(4) will return
to Status after 20 seconds.
Low Volts
Cut-out
LED 1
LED 2
LED 3
LED 4
20.0 Volts
20.2 Volts
20.4 Volts
20.6 Volts
20.8 Volts
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
ON
ON
ON
ON
ON
21.0 Volts
21.2 Volts
21.4 Volts
21.6 Volts
21.8 Volts
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
ON
ON
ON
ON
ON
22.0 Volts
22.2 Volts
22.4 Volts
22.6 Volts
22.8 Volts
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
ON
ON
ON
ON
ON
23.0 Volts
ON
After “23.0 Volts”, the next button press “rolls back” the Low DC Volts
Cut-out setting to “20.0 Volts”

LD700-24 Manual Selectronic Australia
11
Maintenance
Inverter
Periodic maintenance of your LD700-24 inverter involves little more than
checking for any obstructions to the black cooling heatsink at the rear of the
inverter. The heatsink must be cleared of any accumulated foreign matter that
may have lodged itself between the fins since the last maintenance check, e.g.
insect nests. Also verify that airflow around the inverter has not become
restricted.
Batteries
1. Every week, carry out a thorough visual inspection of all battery
wiring, taking particular note of the condition of inter-connections
between cells. This maintenance should be carried out in conjunction
with the battery manufacturers recommended maintenance.
Safety Hint
When working on batteries of such high capacity it is
essential that you wear protective clothing, some form of eye
protection and rubber-soled work boots. Please regard your
batteries with a great deal of caution, and if in any doubt,
entrust this work to your supplier / installer.
2. Check that the stainless steel inter-connecting bolts are tight and have
no corrosion. If corrosion is evident, carefully follow the following
procedure.
Disconnect the system battery fuse before working on the battery
bank.
Unbolt the stainless steel bolts and nuts of any corroded
connections and thoroughly clean the joint with a wire brush or
file, taking extreme care not to short circuit any battery cells with
any tools.
Re-assemble and smear a small amount of Vaseline or similar
grease over the surface of the joint to slow down any future
corrosion.

LD700-24 Manual Selectronic Australia
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Once a fortnight or as directed in your battery manufacturer, check the
specific gravity (SG) of each battery cell using a hydrometer, to ensure that
all cells are performing correctly and are properly charged. Any serious
imbalance should be reported to your system designer in case remedial
action needs to be taken.
Handy Hints
It is very important that you become familiar with the
functioning of your inverter. From a distance, it is not always
easy to know what if the inverter is On or in Sleep mode. An
easy way to determine this is to plug a small child's night-light
(neon type) into a power point that is easily visible, or replace
this power point with a safety type with a neon indicator. This
will indicate the inverter's operation by flashing when the
inverter is in SLEEP mode and remaining ON when the
inverter is brought ON by a load.

LD700-24 Manual Selectronic Australia
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Radio Frequency Interference
For many years, Radio Frequency Interference (RFI) has been an annoying
problem for owners of Inverters. RFI in a domestic situation can cause noise
on an AM radio receiver. The degree of interference can vary dramatically
from site to site. Below are a few suggestions to help reduce the effects of
RFI in your installation. It is not essential that you follow these guidelines,
however, they will give you the best chance of reducing any RFI, particularly
on AM radio.
It is recommended that the power system including the inverter be housed at
least 10 metres from the home.
Ensure a good earth stake is placed as close to the inverter as possible. This
earth stake should be in a moist area and should be connected to the inverter
earth, see page 2 for wiring details.
Avoid running DC cables into the home, if at all possible. If this cannot be
avoided, run DC and AC in separate conduits separated by as much distance
as practicable. All DC wiring should also be kept as short as possible.
Connect battery negative to earth.
AM radios should be powered from their own self-contained batteries and
kept as far away as possible from AC or DC wiring within walls. Make sure
that your AM radio has maximum signal strength. This will help your radio
to reject any unwanted noise being produced by your inverter, regulator,
controllers or DC lighting. If possible, try moving the radio around to
improve the signal strength or use an external aerial. Some of today's building
materials such as steel roofs and foil insulation may form a barrier to
incoming radio signals. If an external aerial is required, it should be on the
outside of the home, mounted as high as practicable and as far from the
inverter as possible. Connection from the aerial to the radio should be via a
low loss coaxial cable.
Please note the aerial must be an AM RADIO type; a TV aerial will
not work.

LD700-24 Manual Selectronic Australia
14
Fault Finding
No indicators ON when power is first applied
When first connected, if the LD700-24 shows no indicators the battery
connections may be reversed. Check that the red battery wire (10) is
connected to the battery positive, and the black battery wire (11) is connected
to the battery negative. Remember there is a 3 second delay before power is
available after switch ON.
Inverter stays ON when no appliance is being used
This can be a common problem known as a “Phantom Load”, but can be
easily overcome. Some appliances will need to be switched off at the power
point as they may still represent a small load despite being switched off at the
appliance.
Check again to make sure that there are no appliances left ON, the
sequentially switch off appliances at the wall and by watching your night
light (as described in Handy Hint, check to see if the LD700-24 returns to
pulsing (SLEEP) mode after a 10 second delay. Once you have found the
offending appliance, increase the sensitivity of the “Demand Start” (see page
11) until the inverter turns OFF. Once this is done re check that small loads
will still bring the inverter ON when required.
Inverter shuts down during the middle of the day, and comes
back ON late in the afternoon
This is more than likely caused by high battery volts during peak charging
times from Solar Panels. Battery volts should never exceed 34 volts. If this is
the case, have your Solar Regulator checked.

LD700-24 Manual Selectronic Australia
15
Product Warranty and Conditions
These warranty conditions apply to the LD range of Inverters for sales within Australia
and New Zealand.
This product is warranted by the manufacturer for a period of 24 months from date of
purchase to the original purchaser only.
The manufacturer will bear the cost of parts and labour to repair any faults found within
the terms and period of this warranty.
Faulty product or parts must be returned to Melbourne Australia at the owner‟s expense
for claim under warranty.No allowance is made for the cost of labour or traveling time
required to disconnect or reinstall faulty parts.
Cost of freight to return parts to the customer will be paid by the manufacturer, method of
freight used will be determined by the manufacturer.
Under certain circumstances the manufacturer may allow on site repairs to be carried out.
This will be at the manufacturers discretion and the manufacturer is not responsible for the
cost of any labour or traveling time incurred.
Unless otherwise specified to the purchaser the benefits conferred by this voluntary
warranty are additional to all other conditions, warranties, guarantees, rights and remedies
expressed or implied by the Trade Practices Act in your state or territory.
All installation and user conditions as set down in the instruction manual must be strictly
adhered to, failure to do so may void your warranty.
This product is not to be used for Life Support equipment.
Any faults caused by lightning, water or moisture ingress, faulty installation, using the
product in a manner which it is not intended, vermin infestation, improper voltage,
alterations to the product which affect its reliability or performance, or faulty generator
sets will not be covered under warranty.
The manufacturer shall bear no responsibility for any consequential loss, damage or
expense due to any malfunction of the product or the time it is out of service
The manufacturer will not be held responsible for any misleading or incorrect information
conveyed by any salesperson or installer not directly employed by the manufacturer.
If service is required please contact your installer or retailer before taking any
further action.

LD700-24 Manual Selectronic Australia
16
LD700-24 Volt Specifications
Inverter Type Microprocessor control circuit with PWM full bridge power
stage. True sine wave AC output
Current draw from Battery
Condition
Amperage
Demand Start SLEEP mode (average)
Inverter ON, with no Load
Maximum Continuous Load (700 Watt)
Half hour rating (900 Watt)
Surge rating (2000 Watt)
0.03 Amps
0.25 Amps
32 Amps
42 Amps
87 Amps
Inverter Power Ratings @ 25ºC
Condition
Total Inverter output
Wattage @ 1.0pf
Current
Continuous
Half hour rating
Surge rating (5 seconds)
700 Watt
900 Watt
2000 Watt
2.8 Amps
3.7 amps
6.9 Amps
Demand Start
Type
Minimum Load to Start
Response Time Normal Pulse Mode
Pulsing AC
4 watts –16 watts user adjustable
1 second maximum
Battery Voltage Range
Voltage
Low DC Volts Cut Out–10 second delay
Low DC Volts Cut In
High DC Volts Cut Out–Instantaneous
20 –23 volts user adjustable
24 volt
34 volts

LD700-24 Manual Selectronic Australia
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Miscellaneous Specifications
Reverse Polarity Protection
Output Voltage Accuracy 0-350 watts
Output Frequency
Peak Efficiency
Total Harmonic Distortion
Operating Temperature Range
Transformer Type
Cooling Method
Power Point
Chassis Material
Chassis Coating
Size
Full Electronic Protection
± 4% @ 12 volt input
50Hz ± 0.01%
93%
<4%
0C to 50º C
Toroidal
Controlled fan-forced
2 x 10 Amp Single Pole
Zinc Coated Steel
Powder Coated
210W x 170H x 3100mm
D

Selectronic Authorised Service Network
Selectronic Australia
Suite 5, 20 Fletcher Road
Mooroolbark
Victoria 3138
Australia
Ph: [phone]
Fax: [phone]
www.selectronic.com.au
[email protected]
Burley TV Service
Rainbow Power Company
278 Edmondson Ave.
1 Alternative Way
Austral
Nimbin
NSW 2171
NSW 2480
Australia
Australia
Ph: 02 9606-0279
Ph: 02 6689 1430
Fax: [phone]
Solar Inverter Services
Reid Technology
13 Thirteenth Ave.
Unit D, 15-17 Saturn Place
Sawtell
North Harbour
NSW
Auckland 1330
2452
New Zealand
Ph: 02 66581733
Ph: 9 489-8100
Fax: [phone]
[e-mail]
Suite 5, 20 Fletcher Road Mooroolbark Victoria 3138 Australia
Phone [phone] Fax [phone]
Web www.selectronic.com.au Email [e-mail]
CS0136 Rev 04 Part No. 003621