7 Commissioning
SMA Solar Technology AG
Operating manual
101
SI44M-80H-13-BE-en-15
The Sunny Island distinguishes between battery current sensors of the types 50 mV and 60 mV. The types reflect the
amplification factor of the battery current sensor. The amplification factors are given in amperes per 50 mV or in
amperes per 60 mV, e.g., 400 A/60 mV.
Procedure:
1. Switch off the Sunny Island and open the battery fuse load-break
switch quickly.
2. Short-circuit the measuring cable at the battery current sensor. To
do so, Connect the
BatCur–
and
insulated measuring
conductors to the connection for
.
BatCur −
Battery
Battery fuse
3. Close the battery fuse load-break switch quickly and switch on the
Sunny Island.
4. Set the parameter
Current sensor type (60mV, 50mV)
to the type and amplification factor of the battery
current sensor used.
5. Select the parameter
Autocalibration of the external battery current sensor
and set to
On
.
☑ The Sunny Island starts the adjustment.
6. After 10 seconds, select the parameter
Battery > Battery > Current > Battery current
and read off the value.
7. If the value of the parameter is not between 0 A and 1 A, ensure that the measuring insulated conductors are
properly connected and the battery current sensor is short-circuited. Then repeat steps 4 to 6.
8. If the value of the parameter is between 0 A and 1 A, switch off
the Sunny Island and open the battery fuse load-break switch
quickly.
9. Connect the
insulated measuring conductor on the side
for connecting the battery fuse.
BatCur −
Battery
Battery fuse
