46
46 | SAMLEX AMERICA INC.
SECTION 10 |
Protections
for 3 minutes and then switch ON the unit again. Before switching ON, determine and
remove the cause of overloading.
SHORT CIRCUIT CONDITION: Short circuit condition will be detected when the AC
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
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.
ed LED marked “OVERLOAD” (3, Fig 6.1a) will turn ON, and buzzer alarm will sound.
10.2 WARNING ALARM - LOW DC INPUT VOLTAGE
The voltage at the DC input terminals will be lower than the voltage at the battery
terminals due to voltage drop in the battery wires and connectors. The drop in the
voltage at the DC input terminals of the inverter could be due to lower battery voltage
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.
10.3 LOW DC INPUT VOLTAGE SHUT DOWN
If the voltage at the DC input terminals falls below 10V ± 0.1V for 12V versions or 20V ±
0.2V for 24V versions, the AC output is shut down. Buzzer alarm is sounded. The Green
LED marked "Po WER" (2, Fig 6.1a) will remain lighted. The Green indication light on
the GfCI 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.
To reset, switch OFF the unit using the 3-Postion Rocker Swith “ON/Off/EXT. Switch”, wait
SAMLEX AMERICA INC. | 49
ISSUE
POSSIBLE CAUSE
REMEDY
There is no AC output. The
Green LED marked "POWER"
(2, FIG 6.1A) is lighted. Buzzer
is ON.
Shut-down due to high
input DC voltage –
> 16.5V for 12V versions
and > 33V for 24V
versions.
• 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.
AC output shuts down
completely. Red LED marked
"OVERLOAD" (3, Fig 6.1a)
is lighted. Buzzer is ON. The
Green LED marked "POWER"
(2, Fig 6.1a) is lighted.
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.
• 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.
There is no AC output. Buzzer
alarm is sounded. Red LED
marked "OVER TEMP" (4, Fig
6.1a) is lighted. The Green
LED marked "POWER" (2, Fig
6.1a) is lighted.
Shut-down due to over
temperature because of
fan failure or inadequate
cooling as a result of high
ambient temperature or
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.
SECTION 11 |
Troubleshooting Guide
46
Summary of Contents for PST-300S-12E
Page 102: ...102 51 OPMERKINGEN 102...
Page 153: ...153 HINWEISE 153...
Page 204: ...204 51 NOTES 204...
Page 255: ...255 51 NOTAS 255...
Page 256: ...256 256 www samlex com www samlex solar com 256...
