User Manual: Electronic switch Main Switch
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Before switching on the electronic switch you should always connect the batteries first and only
afterwards switch on the system using the magnetic switch or the RC Switch. Follow this rule also for
the switching off procedure. Switch the system off first and disconnect the batteries only afterwards.
2.1
Connection of the Main Switch
The Main Switch measures the battery current and the voltage. If you do not need to get telemetry
information from the Main Switch, you do not have to connect the Ext. output. If you DO want to display then
the telemetry the Main Switch Ext. output must be connected to the Ext. Duplex receiver input. This also
powers the measurement part of the Main Switch.
Fig. 2: Block diagram of the Main Switch
The ground (-) of the Main Switch Ext. is isolated. Do not connect the RC Switch Ground to the output ground
of the Main Switch (-OUT).
2.2
Charging of the battery
The battery can be charged while connected to the Main Switch (be sure that the Main Switch is in the off
state – the green LED is off), but do not attempt to disconnect the battery while charging. The charging
voltage is to be connected directly to the battery (alternatively, to the battery through the switch input), but
never connect charging voltage to the switch output!! If it becomes necessary to disconnect the battery,
disconnect the charging voltage first!! Failure to follow these basic rules can destroy the Main Switch!!