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Sunny Boy 2000
Technical Description
Blinking code 7: Drastic Differential Current change
The yellow failure indication LED is activated for 5 seconds, out for 3 seconds and
then blinks seven times. The code is sent three times.
If the failure persists the indication is repeated.
The Sunny Boy´s monitoring systems have detected a differential current and immediately disconnected the device from the grid. The integrated all-pole sensitive differential current control monitors the discharge current between the AC output of the
inverter and the PV-panel. This additional safety feature is triggered by drastic
changes of the differential current of I∆N ≥ 30 mA and disconnects the inverter from
the grid within 0.2 seconds.
SB2000-11:EE
- 47 -
SMA Regelsysteme GmbH