3 Description of the device
3.1 Mode of operation
The device converts the DC voltage generated by the PV-modules into AC voltage and feeds this into the power
grid. The starting procedure begins when there is sufficient sunlight and a specific minimum voltage is present
in the device. The feed-in process begins once the PV generator has passed the insulation test and the grid
parameters are within the requirements imposed by the grid operator for a specific monitoring time. If, as it
gets dark, the voltage drops below the minimum voltage value, feed-in mode ends and the device switches off.
3.2 Device diagram
Fig.3: Device diagram
Key
1 Housing 6 Interfaces / cable feed-through
2 Cover 7 Communication - USB port / cable feed-
through
3 Status indicator with display and operator
panel
8 DC connection / DC connector
4 Cover for the connection area 9 DC isolator switch
5 AC connection / 5-pole connector
3.2.1 Mechancial Components
The DC isolator switch is located on the underside of the device. The DC isolator switch is used to disconnect
the inverter from the PV generator in order to carry out service.
Disconnecting the device from the PV generator
F Switch the DC isolator switches from 1 (ON) to 0 (OFF).
Connecting the device to the PV generator
F Switch the DC isolator switches from 0 (OFF) to 1 (ON).
Fig.4: DC isolator switch
3.2.2 Electrical functions
A potential-free relay contact is integrated into the device. Use this contact for one of the following functions:
Potential-free relay
The potential-free relay contact closes as soon as there is a fault during operation. You use this function, for ex-
ample, to signal a fault visually or acoustically.
Manual Description of the device | 3
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blueplanet 7.5 TL3 KACO blueplanet 8.6 TL3 KACO blueplanet 9.0 TL3 KACO blueplanet 10.0 TL3
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