Any further connection (possibly from the connection of a former
solar controller, damaged insulation at the roof cable duct etc.) to the
battery minus (-) or to the vehicle (-) chassis might falsify the internal
current metering of the unit and is not admissible.
(!) Only DSC 12, DSC 25
Connection
(Pleaseconsulttheconnectionplanforyourdevice!)
3a. Starter Battery „Start II“ (Optional)
Connect the second charging port to the vehicle’s starter battery using
the red connection cable (wire cross-section 1.5-2.5 mm². This cable
may be longer. In case of non-utilization, this terminal is left free.
If used, the output for the vehicle’s starter battery will be working with
reduced voltage and charging current rates. Thus, the valuable solar
power will be supplied to board/solar battery I being more suitable.
However, the vehicle’s starter battery will be kept in a condition, that
starting will always be possible, even in case of longer stop periods
(such as in winter).
Usually, the minus poles of the starter battery („Start II“) and of
the supply battery („BOARD I“) had already been connected by the
customer. If not, this connection must be made for charging of the
starter battery.
(!) Only SC 20, SC 40
3b. 12 V Consumer Connection
This output can be used to operate small 12V consumers, such as 12V
fans, car relays or refrigerators with control input D+. This terminal
must not be short circuited.
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