SMA SUNNY ISLAND SIC40-MPT, Technical Description

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SMA Solar Technology AG Electrical Connection
Technical Description SIC40-TEN081110 25
7. Tighten the lock nut of the cable screw connection.
5.5 Communication
The communication between the charge controller and the Sunny Island 5048/2012/2224 allows
the charge controller to be controlled in a coordinated manner and ensures the precise calculation
of the charge state in the Sunny Island without an additional battery current sensor resistor.
All important operating data of the charge controller can be read on the Sunny Island display. In
addition, the most important values are saved on the Sunny Island SD card (if available).
Up to four charge controllers can be connected in parallel to one Sunny Island system.
If the poles of the DC cables are reversed, replace the thermal fuses
If the DC cables are reversed when connecting, the thermal fuse will be irreparably
damaged. Proceed as described in section 9.1 "Replacing the Thermal Fuses" (Page 36)
to replace the thermal fuses.
Multicolored LED
Once the battery has been connected, the multicolored LED of the charge controller
illuminates red. If the LED does not illuminate, the poles of the DC cables are reversed
and the thermal fuses must be replaced. If this is not the case, the charge controller is
defective and must be replaced. In this case, contact the SMA Service Line. See section
14 "Contact" (Page 47).
DANGER!
Danger to life due to high voltages in the charge controller.
• Only switch on the line circuit breaker and connect the cables to the battery once
all connections on the charge controller have been established.
SIC40-MPT 1
SIC40-MPT 2 SIC40-MPT 3 SIC40-MPT 4
Sunny Island