SMA Sunny Island 4248U, Installation & Operating Instructions Manual

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Installation SI4248U Manual
32
Battery Temperature Sensor
Install the battery temperature sensor (BTS) in the battery compartment where it makes contact
with the case of a battery near the center of the battery bank.
The battery temperature sensor must be connected for the inverter to function
properly.
• Use only the BTS that came with the Sunny Island 4248U
• Do not lengthen the BTS cable
• Do not drill holes in any part of the batteries to mount the sensor unless instructed to do so
by the battery manufacturer
• Although the BTS terminals are numbered and the wires are color coded, there is no
polarity to the BTS so it may be wired in any configuration
If the inverter is powered up without the battery temperature sensor connected,
the display will show a “CBT Open“ error and will not let the user proceed with
normal operation. To clear this, switch off the inverter and connect the battery
temperature sensor cable to the appropiate terminals.
Figure 1-15 Equipment Ground and Auxiliary Wiring
Shield C
AN_L
C_GND CA
N
_
H