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SECTION 8 |
Switching on the Unit
• Press the ON / OFF Key and hold in pressed condition for around 3 to
5 sec, till a beep is heard. Release the Key after the beep is heard
• As soon as the ON/OFF key is released, the G-4 starts in Inverter
Mode and 120 vAC is made available at the output terminals. Due to
"Soft Start Function," the output voltage ramps up from around 40v
to 120v in around 350 ms.
• The LCD display will appear after around 2 to 3 sec after release of
the Key and will display the Self Test Mode Screen as follows:
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• At the same time, the unit carries out Self Test Mode for around
8 sec (includes nested Boot Detection Mode) to check necessary
requirements and measurements. The Green Status LED and the Red
Fault LED will blink around 8 times during the Self Test Mode. Further
details of abnormal conditions detected during the Self Test Mode
are given in the subsequent paragraphs
• After the Self Test Mode is completed successfully, there will be a
short beep, and the Green Status LED and the Red Fault LED will stop
blinking.
• Under normal operating conditions, the LCD display will indicate
Utility Mode or Generator Mode or Inverter Mode Screen. Also, the
Green Status LED will change to a pattern relative to the operating
status as shown in "Tables 9.1, 9.2 & 9.3 in Section 9 titled
"Protections, Operational Monitoring and Fault Diagnostics"
Switching oFF the Unit
• Press the On / Off Key and hold in pressed condition.
• The switching off routine is completed within about 3 to 5 sec
and a beep is sounded on completion. Release the Key after
hearing the beep.
• Please note that if the fans were running at the time the unit
is switched off, the fans may continue to run even after the
unit is switched off to cool the unit down.
Self-Test Mode
During the switching on procedure as described above, the unit carries
out Self Test Mode that includes a nested Boot Detection Mode to
include the following necessary requirements and measurements: The
Green Status LED and the Red Fault LED will blink 1 @ 1 sec for around
8 sec / 8 times during the Self Test Mode:
• Checks if the AC input wires from the utility / grid / generator have
been connected by mistake to the AC output connectors instead of
the AC input connectors. If this mistake has been made in the AC
wiring, the booting process is halted and the following error message
is displayed. Correct the error and start again:
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46 | SAMLEX AMERICA INC.
Operation
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CAUTIon!
Please note that the above protection against error
in connection of the AC input wiring is active only
when this wrong connection is made when the unit
is in oFF condition and is powered on subsequently.
If the AC input voltage from the utility / generator
e
is erroneously connected / fed to the AC output
connections when the unit is on condition, the
Inverter Section will be burnt instantaneously and
may become a fire hazard. Hence, please ensure that
the AC input voltage from the utility / generator
is connected to the AC input terminals and not to
the AC output terminals and that this connection is
made only when the unit is in oFF condition.
• Checks the state of charge of the battery by measuring its terminal
voltage. If the battery voltage is more than 5v and less than 9v (For
12v version) OR more than 10v and less than 18v (for 24v version),
the battery is considered weak, the booting process is halted.
Following symptoms will be seen:
- Status LED - OFF
- Fault LED - blinking 1 @ 0.5 seconds
- Buzzer Alarm - 1 beep @ 0.5 seconds
- The following error message is displayed:
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CAUTIon! Do noT PReSS THe on/oFF KeY To ReSTART or switch
oFF the unit. Disconnect AC input power and remove the DC input
connection and disconnect the battery. Recharge the battery fully
using another charger, if possible, or replace the battery with a
new fully charged battery.
• Checks the state of charge of the battery by measuring its terminal
voltage. If the battery voltage is less than 5v (For 12v version) OR
less than 10v (for 24v version), the battery is considered not fit
for charging and the booting process is halted. Also, checks if the
battery is not connected or if the battery connection is broken. The
booting process is halted if these conditions are detected.
The following error message is displayed if any one of the above 3
conditions are detected. Following symptoms will be seen:
- Status LED - OFF
- Fault LED - ON constantly
- Buzzer Alarm - ON constantly
The following error message is displayed:
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