Samlexpower PST-60S-24A User manual

PURE SINE WAVE
MODEL: PST-60S-24A
DC-AC INVERTERS
OWNERS MANUAL
Please read this manual before operating your inverter.
AC POWER SOURCE

INDEX
Page 2
Contents
General Safety & Installation ............................ 3
Warning ......................................................... 4
Description & Application .............................. 5-6
Installation .................................................. 7-8
Making Connections ........................................ 8
Operating the Inverter ..................................... 9
Protections against abnormal conditions ...........10
Troubleshooting Guide ............................... 11-12
Specifications................................................. 13
Limited Warranty............................................ 14

Warning! Exclamation mark ! indicates fundamental
safety measures to be observed when using
electrical equipment to avoid the danger of:
- electric shocks
- fire
- injury
General Safety and Installation Information
PLEASE READ THIS MANUAL BEFORE OPERATING
THIS INVERTER!
 Do not connect the output to other power sources!
 The inverter must only be used for the purpose specified by the manufacturer!
 When working on the inverter, always disconnect it from the mains!
 A failure of the protective device means that danger is still possible from parts which remain
under voltage during repair!
 Do not operate the inverter if housing or cables are damaged!
 Do not expose the inverter to direct sunlight in order to avoid additional heating!
 The inverter must be positioned and fixed in such a way that it cannot fall over or fall down!
 The inverter must be kept in a safe place out of the reach of children!
 The inverter must not be operated in a damp or wet environment!
 Air intake and outlets must not be blocked!
 Ensure good ventilation!
Do not operate without connecting to ground. Shock may result!
1.2 Cables:
•If cables have to be inserted through metal walls or other sharp-edged materials, use a cable
duct or cable bushing!
 Do not lay cables loosely or in sharp bends in electrically conductive materials!
 Do not pull the cables!
 Do not lay 115/230 VAC mains cable and 12/24 V DC cable together in the same cable duct!
 The specified minimum cable cross-section must be complied with!
 Fix cables properly!
 Lay cables in such a way that no one can trip over them!
 Lay cables in such a way that they are not exposed to the risk of damage!
1.1 About the unit itself:
1.3 Installation on Boats:
 Wrong installation of electrical units on a boat may lead to corrosion of the boat. Therefore,
please let a boat electrician carry out the installation of the inverter.
Page 3

PLEASE TAKE THE FOLLOWING PRECAU-
TIONS. FAILURE TO ABIDE BY THESE RE-
QUIREMENTS WILL VOID WARRANTY.
2.1 Never parallel the 115V AC output of the inverter with
the output from a generator or electric mains, or with the
output of another inverter. This will instantly burn the
inverter.
Although this inverter has an input OVER VOLTAGE SHUT DOWN at 30V,
input voltages higher than 30V will cause permanent damage. Ensure the
following when the battery is being charged simultaneously (the output
voltage of the charging device will be fed to the inverter):
nEnsure that the charging voltage of the alternator has not been set
above 30V.
nDo not use an unregulated solar panel. It’s voltage can reach up to 36V
on a very cold day. When using a regulated solar panel, its voltage
should not be set beyond 30V.
nDo not connect to battery other than 24V
nEnsure that the voltage of the battery charger does not exceed 30V in
any condition.
2.2 Do not reverse the polarity to the input connections.
This will permanently damage the inverter.
2.3 Do not connect the inverter to positive grounded
vehicle.
Page 4
WARNING

3.1 This inverter converts 24V DC from 24V battery system into
115V AC, 60Hz. The waveform of its AC output voltage is pure sine
wave like the wave form of the electric utility power supply.
(Cheaper commercial grade inverters have a quasi-sinewave/
modified sinewave output wave form which is not suitable for
sensitive equipment.) Advantages of Pure Sine Wave inverters over
commercial grade modified sine waver inverters are:
DESCRIPTION AND APPLICATION
a.)Output voltage wave form is pure sine wave with very low
harmonic distortion and clean power like utility supplied electricity.
b.)Inductive loads like microwaves and motors run faster, quieter
and cooler.
c.) Reduces audible and electrical noise in fans, fluorescent lights,
audio amplifiers, TV, Fax, & answering machines.
d.)Prevents crashes in computers, weird print out, and glitches in
monitors.
e.)Reliably powers the following devices that will normally not work
with modified sine wave inverters:
Page 5
• Laser printers, photocopiers, magneto-optical hard drives
• Some fluorescent lights with electronic ballasts
• Power tools employing “solid state” power or speed control
• Some battery chargers for cordless tools
• Some new furnaces with microprocessor control
• Digital clocks with radios
• Sewing machines with speed/microprocessor control
• X-10 home automation system

Page 6
3.2 The maximum continuous power rating of this inverter is 600
watts. It can provide a surge power of 1000 watts (for a few
seconds) to start motor driven loads.
•Please note that motor driven loads (e.g. power
tools, pumps, compressors, refrigerators etc.)
require 5 to 10 times their normal running
power for initial starting. Ensure that the starting
power of these loads is not more than 1000
watts.
•Please also note that the output power indi-
cated for microwave ovens is generally the
“cooking power”. The “electrical input power” in
this case will be almost 2 times the “cooking
power”. Ensure that the “electrical input power”
of the microwave is less than the “continuous
power” output of the inverter (600 watts).
REMARKS:
DESCRIPTION AND APPLICATION

Page 7
INSTALLATION & MAKING CONNECTIONS
1 115V AC output receptacles
2 Power on/off Switch
3 Green L.E.D. - Power output status
4 Red L.E.D. - Overload
5 Red L.E.D. - Over temperature
6 Input terminals (back of unit -not shown)
RED - Positive (+)
WHITE - Negative (-)
7 Cooling fan (back of unit - not shown)
8 Grounding lug (back of unit - not shown)
CAUTION!
Reverse polarity of input connection will blow the fuse inside the
inverter and may cause permanent damage. Please ensure that
the RED positive terminal is connected to the positive(+)
terminal of the battery and the WHITE negative (-) terminal is
connected to the negative (-) terminal of the battery. Damage
due to reverse polarity is not covered by warranty.
21
3
45

Page 8
4.1 Ensure that the power ON/OFF switch is turned off.
4.2 Place the inverter in a cool & ventilated space. Ensure
that there is at least 10cm of open space around the
inverter. Do not block the openings on the inlet side of the
cooling fan and the vent holes.
4.3 Use #6 AWG red and black color coded cables to
connect the inverter to the battery. The red wire is positive
(+) and the black wire is negative (-). Connect the red wire
to the RED (+) terminal of the inverter and the black wire
to the WHITE (-) terminal of the inverter. Now connect the
black wire to the negative (-) terminal of the battery and
then the red wire to the positive (+) terminal of the bat-
tery. A spark may be observed when connecting the
positive wire to the battery (+) due to charging of
capacitors inside the inverter. This is normal.
4.4 Ground the inverter using the Grounding Lug at the
rear of the unit.
INSTALLATION & MAKING CONNECTIONS

Page 9
OPERATING THE INVERTER
5.1 Switch off all loads connected to the output of the
inverter.
5.2 Push the power ON/OFF switch to ON position. The
green power L.E.D will be lit and AC output voltage will be
available under normal conditions. The cooling fan will be
off ( the fan is temperature controlled).
5.3 Now switch on the load.
5.4 When running on full load for longer duration, keep the
vehicles engine running to prevent batteries from discharg-
ing.
5.5 CAUTION! Do not start the vehicles engine with the
inverter in ON condition. The inverter may shut down
during cranking due to drop in the battery voltage below the
inverters low battery shut down threshold of 20V.
COOLING FAN
The cooling fan is temperature controlled. It will come on
when the hot spot inside the unit reaches 40o C.
The fan may, therefore, not come on at light or
medium loads. This is normal

Page 10
PROTECTIONS AGAINST ABNORMAL CONDITIONS
6.1 LOW BATTERY ALARM: In case the battery voltage drops below
21.4V, a buzzer alarm will be sounded. Green Power L.E.D. will remain on.
Output voltage will still be available.
6.2 LOW BATTERY SHUTDOWN: In case the battery voltage further
drops to 20V or below, the inverter will shut down the output voltage.
Buzzer will be sounded and the green Power LED will be off.
6.3 INPUT OVERVOLTAGE SHUT-DOWN: In case the input voltage
is 30V or higher, the output voltage will be shut down. (CAUTION! This
condition may cause permanent damage.)
The green Power L.E.D. will be off and the buzzer will be on.
6.4 OUTPUT OVER-LOAD OR SHORT: If there is overload or short
in the output, the output voltage will be shut down. The green Power
L.E.D. will be off. The red over-load L.E.D. will be lit. Remove the
overload/short circuit condition. Switch off the D.C. power with the on/off
switch, and switch on again. (Unit will remain latched in shut down
condition. Input power is required to be switched off and on
again to reset the latch).
6.5 REVERSE POLARITY SHUT-DOWN: In case the positive (+) or
negative(-) connections on the input side are reversed, the 20A fuses inside
the unit will blow. The LED green Power will be OFF. (CAUTION! This
condition may cause permanent damage.)
6.6 OVER TEMPERATURE SHUT-DOWN: In case the unit gets
overheated due to inadequate cooling, the output voltage will be shut-
down. The green Power L.E.D. will be off. The buzzer will be sounded and
the red over-temp. L.E.D. will be on. Switch off the load. Determine and
remove the cause of overheating. The unit will auto reset when it
cools down.
NOTE: Check the Troubleshooting Guide for possible remedies
to prevent the above abnormal conditions.