Samlex Europe Pure Sinewave PST-300S-12E Mode D'emploi page 46

SECTION 11 | SECTION 10 |
To reset, switch OFF the unit using the 3-Postion Rocker Swith "ON/Off/EXT. Switch", wait
ISSUE
for 3 minutes and then switch ON the unit again. Before switching ON, determine and
There is no AC output. The
remove the cause of overloading.
Green LED marked "POWER"
(2, FIG 6.1A) is lighted. Buzzer
SHORT CIRCUIT CONDITION: Short circuit condition will be detected when the AC
is ON.
output voltage drops to 80VAC or lower over a period of around 1 to 1.5 sec. The AC
output voltage will be shut down thereafter.
R ed LED marked "OVERLOAD" (3, Fig 6.1a) will turn ON, and buzzer alarm will sound.
The Green LED marked "POWER" (2, Fig 6.1a) will continue to be lighted. The unit will
be latched in this shut down condition and will require manual reset. To reset, switch
OFF the unit using the 2-Postion Rocker Switch "ON/Off?EXT. Switch", wait for 3 minutes
and then switch ON the unit again. Before switching ON, determine and remove the cause
of overloading.
AC output shuts down
10.2 WARNING ALARM - LOW DC INPUT VOLTAGE
completely. Red LED marked
"OVERLOAD" (3, Fig 6.1a)
The voltage at the DC input terminals will be lower than the voltage at the battery
is lighted. Buzzer is ON. The
terminals due to voltage drop in the battery wires and connectors. The drop in the
Green LED marked "POWER"
voltage at the DC input terminals of the inverter could be due to lower battery voltage
(2, Fig 6.1a) is lighted.
or due to abnormally high drop in the battery wires if the wires are not thick enough
(Please see page 30 "Connection From Batteries To the DC Input Side Sizing of Cables
and Fuses"). If the voltage at the DC input terminals falls below 10.7V ± 0.1V for 12V
versions or 21.4V ± 0.2V for 24V versions, a buzzer alarm will be sounded. The Green
LED marked "Po WER" (2, Fig 6.1a) and indication light on AC output voltage would
continue to be available. This warning buzzer alarm indicates that the battery is
running low and that the inverter will be shut down after sometime if the voltage at
the inverter terminals further drops to 10V ± 0.1V for 12V versions or 20V ± 0.2 V for
24V versions.
There is no AC output. Buzzer
alarm is sounded. Red LED
10.3 LOW DC INPUT VOLTAGE SHUT DOWN
marked "OVER TEMP" (4, Fig
6.1a) is lighted. The Green
If the voltage at the DC input terminals falls below 10V ± 0.1V for 12V versions or 20V ±
LED marked "POWER" (2, Fig
0.2V for 24V versions, the AC output is shut down. Buzzer alarm is sounded. The Green
6.1a) is lighted.
LED marked "Po WER" (2, Fig 6.1a) will remain lighted. The Green indication light on
the Gf CI will be OFF.
The unit will reset automatically when the DC input voltage rises > 11.5V ± 0.3V for 12V
versions and > 23V ± 0.5V for 24V versions
10.4 HIGH DC INPUT VOLTAGE SHUTDOWN
If the voltage at the DC input terminals exceeds 16.5V for 12V versions or 33V for
24V versions, the AC output voltage will be shut down temporarily. Buzzer alarm will be
sounded. The Green LED marked "Po WER" (2, Fig 6.1a) will remain lighted. The unit
will be reset automatically when the voltage drops down to < 16.5V for 12V versions
and to < 33V for 24V versions.
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Troubleshooting Guide Protections
POSSIBLE CAUSE
Shut-down due to high
input DC voltage –
> 16.5V for 12V versions
and > 33V for 24V
versions.
Permanent shut-down of
the AC output due to con-
tinuous overload > 110%
(3300W ± 50W) for 2 to 3
sec or due to short circuit
on the AC load circuit.
Shut-down due to over
temperature because of
fan failure or inadequate
cooling as a result of high
ambient temperature or
REMEDY
• Check that the voltage at the DC input
terminals is less than 16.5V for 12V versions
and less than 33V for 24V versions.
• Ensure that the maximum charging voltage
of the battery charger / alternator / solar
charge controller is below 16.5V for 12V
versions and below 33V for 24V versions.
• Ensure that an unregulated solar panel is
not used to charge a battery. Under cold
ambient temperatures, the output of the
solar panels may exceed 22V for 12V Panels
or 42V for 24V Panels. Ensure that a charge
controller is used between the solar panel
and the battery.
• Reduce the load / remove the short circuit
• The load is not suitable as it requires higher
power to operate. Use an inverter with
higher power rating.
• If the unit goes into permanent overload
again after resetting and removing the load
completely, the unit has become defective.
NOTE: The unit will be latched in this shut-
down condition and will require manual reset.
To reset, switch OFF the power ON/OFF switch,
wait for 3 minutes and then switch ON again.
Before switching on again, remove the cause
of the shut-down.
Check that the fans are working. If not, the fan
control circuit may be defective.
If the fans are working, check that the ventila-
tion slots on the suction side and the openings
on the discharge side of the fans are not
obstructed.
If the fans are working and the openings
are not obstructed, check that enough cool
replacement air is available. Also check that the
ambient air temperature is less than 40ºC.
Reduce the load to reduce the heating effect.
After the cause of overheating is removed and
automatically.
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