Samlex America SAM-3000-12 - Manual (Page 22)

20 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 21
note: please refer to table 6.1 for status of monitoring LeDs and Buzzer for various
protections / operational conditions explained below.
over temperature protection
The unit is cooled by load-controlled fan. In case the fan fails or if the cooling is inad-
equate due to higher ambient temperature or restricted airflow, the temperature of
hot spot inside the inverter will exceed the safe temperature threshold of 88°C to 115°C
and the unit will automatically shut down. Yellow LED "Input Fault" will be ON & Green
LED "Power" will be OFF. The unit will reset automatically on cooling down 10°C to 15°C
below threshold.
Low Dc input Voltage protection
This condition is not harmful to the inverter but could damage the 12 V battery. The in-
verter automatically shuts down when input voltage drops to 10.5 ± 0.3V. Yellow LED "
Input Fault" will be ON, Green LED "Power" will be OFF and buzzer alarm will be sound-
ed. It will reset automatically when input voltage is restored to > 11.5V.
High Dc input Voltage protection
The inverter will automatically shut down when the input voltage exceeds 15.5 V± 0.2V.
Input voltage exceeding 16 volts could damage the inverter. Yellow LED "Input Fault" will
be ON and Green LED "Power" will be OFF. Auto-reset at < 15.5V ± 0.2V.
overload / Short circuit / Ground fault protection
The inverter will automatically shut down due to (a) short circuit conditions, (b) when
the continuous / surge power exceeds rated watts and, (c) Ground Fault. The Red LED
"Overload" will be ON and Green LED "Power" will also be ON. The unit will latch in shut
down condition. To reset, switch OFF the ON/OFF switch, wait for 3 minutes and switch
ON again.
In models SAM-2000-12 and SAM-3000-12, if load with power draw > 1725 VA/15A is
connected to 1 NEMA5-15R outlet, the 15A breaker on top of that receptacle will trip
(pop out). Reset manually (push in).
i
info
Some high capacitive loads like compact fluorescent Lamps (cfL) or Switched mode power
Supply (SmpS) will draw very high inrush current due to very fast voltage rise of the square
wave nature of the modified Sine Wave and shut down the inverter. try using a small resistive
load in parallel to reduce high inrush current and prevent overloading.
SECTION 6 | Protections Monitoring
& Trouble-Shooting
11002-SAM-1000-1500-2000-3000-12-0814.indd 22 14-08-12 9:59 AM