Samlex America SAM-3000-12 - Manual (Page 24)

22 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 23
down. Red LED "Overload" will be ON and Green LED "Power" will also be ON. The unit will
latch in shutdown condition. To reset, switch OFF the ON/OFF switch, wait for 3 minutes and
switch ON again.
• Ground fault protection will also operate if the neutral and ground of the ac output of the
inverter are connected (bonded) intentionally like in Service entrance / Load center for ac
distribution wiring.
!
caution!
connecting to utility ac distribution wiring with neutral to Ground connection (bond) is not permit-
ted. in ac utility distribution wiring, the neutral conductor is connected (bonded) to the equipment
Grounding conductor at the Load center / Service entrance. Both these conductors are then bonded
to the earth Ground (Ground rod). thus, if the output of the inverter is connected to the utility ac
distribution wiring, it will see a neutral to Ground connection and the inverter will trip due to
activation of the Ground fault protection circuit as explained above.
failure to Start Some Devices on Load
Some high capacitance loads like Compact Fluorescent Lamp (CFL) or Switched Mode
Power Supply (SMPS) will shut down the inverter under overload condition if the inverter
is switched ON with these loads in ON condition. However, if these loads are switched
OFF first and switched ON only after around 10 sec after the inverter is switched ON (as
already recommended under switching ON procedure), the inverter may not shut down.
Hence, do not switch ON the inverter with such loads in ON condition.
monitoring of operational Status & protections
Normal / abnormal behavior can be monitored by observing Green LED (6, Power), Yellow
LED (5, Input Fault), Red LED (7, Fault) and Buzzer. Details are given in Table 6.1 below:
table 6.1 protections and monitoring
operating
condition/
protection
threshold/
reason
Green
LeD (6,
power)
yeLLoW
LeD (5,
input
fault)
reD
LeD (7,
fault)
Buzzer remedy/reset
Normal - ON OFF OFF OFF -
Low DC Input
Alarm
10.8V ± 0.3V ON OFF OFF ON Check battery voltage and
input voltage drop.
Auto reset when voltage
> 10.5 V ± 0.3V.
No Output
due to Low DC
Input Voltage
shutdown
10.5V ± 0.3V OFF* ON OFF ON Check battery voltage and
input voltage drop.
Auto reset when voltage
rises to >11.5V.
No output due
to High DC
Input Voltage
Shut Down
15.5 ± 0.2V OFF* ON OFF OFF Check charger voltage.
Auto reset when voltage
< 15.5V.
SECTION 6 | Protections Monitoring
& Trouble-Shooting
11002-SAM-1000-1500-2000-3000-12-0814.indd 24 14-08-12 9:59 AM