PROTECTIONS AGAINST ABNORMAL
CONDITIONS
Page 25
Switching on / off using the optional remote on / off Remote Control
An optional corded Remote Control Model, No. RC-15, is available to enable switching
on and off from a distance of 18 ft. The remote on / off control comes with 18 ft. of wire.
One end of the remote control is plugged into the 6 position modular jack (9) provided
on the inverter.
To use the remote control, the inverter is first required to be switched
on from the on / off switch on the front panel.
Now, the inverter can be toggled
between off / on conditions by pressing the push button on the remote control. The LED
on the remote control will light when the inverter is in the on condition
No load draw (idle current)
When the on / off switch is turned on, all the circuitry inside the inverter becomes alive
and the AC output is made available. In this condition, even when no load is being
supplied (or, if a load is connected but has been switched off), the inverter draws a small
amount of current from the batteries to keep the circuitry alive and ready to deliver the
required power on demand. This is called the idle current or the no load draw. Hence,
when the load is not required to be operated, turn off the on / off switch on the inverter to
prevent unnecessary current drain from the battery.
NOTE:
When the inverter is turned off using the optional Remote Control RC-15, only
the final output section is turned off. The rest of circuits are still in standby condition.
Hence, even in this off condition, there will be a no load current. Therefore, to prevent
any drain from the battery, switch off the inverter from the on/off switch provided on the
front panel of the inverter.
The inverter has been provided with protections detailed below.
Low DC input voltage warning alarm.
The voltage at the DC input terminals will be lower
than the voltage at the battery terminals due to the voltage drop in the battery cables 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 cables if the cables are not
thick enough (Please, read under
“Installation – Connection from the batteries to the
DC input side of the inverter – cable and fuse sizes” on page 20
). If the voltage at the
DC input terminals falls below 10.7 V for PST-200S-12A or 21.4 V for PST-200S-24A, a
buzzer alarm will be sounded. The green LED (3) will continue to be lighted and the AC
output voltage will 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 10 V for PST-200S-12A or 20 V for PST-200S-24A.
-
Shut-down due to low DC input voltage.
If the inverter continues to power the load after
the low DC input voltage buzzer alarm is sounded, it will shut down temporarily when the
DC input voltage further drops below 10 V for PST-200S-12A or 20 V for PST-200S-24A.
The green LED (3) will be switched off and there will be no AC output voltage. The buzzer
alarm will continue to sound.
The unit will reset automatically when the voltage of the
battery rises to 11.5 V for PST-200S-12A or 23 V for PST-200S-24A.
