Victron energy BlueSolar MPPT 150/70 CAN-bus Manual página 13

If the absorption period is interrupted due to a cloud or due to a power hungry load, the
absorption process will resume when absorption voltage is reached again later on the
day, until the absorption period has been completed.
The absorption period also ends when the output current of the solar charger drops to
less than 2 Amps, not because of low solar array output but because the battery is fully
charged (tail current cut off).
This algorithm prevents over charge of the battery due to daily absorption charging
when the system operates without load or with a small load.
4.4 Connecting the solar array
After the correct charge algorithm has been selected, the controller is ready for use.
Other settings may be changed/entered before or after connecting the solar array.
Close the connection to the solar array.
If there is sufficient sunlight, the charger will automatically start charging the battery.
If, despite sufficient sunlight, the PV voltage reads 000V, please check the
polarity of the PV cable connection.
4.5 Remote on-off
The charge controller will switch on if:
a) A wire link is present over the REMOTE terminals (default factory wire setting).
b) The left-hand REMOTE terminal (marked as B+) is connected to the positive
terminal of the battery (12/24/36/48V). Use wire with a cross-section of 0,75mm²
and insert a 0,1 A fuse close to the battery.
c) A voltage source of 3-60V (with respect to the negative battery terminal) is
connected to the REMOTE B+ terminal.
In case a, the charge controller will switch off if the wire link is removed/interrupted.
In case of b or c, the charge controller will switch on if the voltage is > 5 V.
If the voltage is < 3 V, the charge controller will switch off.
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