11
Quick installation guide for RPI H3 inverters
Connecting digital inputs and dry contacts (optional)
9
When your grid operator wants you to set a power
limitation, e.g. for the 70% regulation in Germany, you
need the Delta Service Software, which is available
from Delta.
If you need to wire dry contacts, digital inputs or RS485,
it is recommended to do this in a dry environment and
before you hang the inverter onto the wall. Reasons for
this are:
Ź
You will have to remove the covers from the
connection ports. Water could leak into the inverter.
Ź
The terminal blocks inside are not easily accessible.
Connector for digital inputs and dry contacts
2
1
Pos.
Designation
1
Dry contacts
2
Digital inputs and outputs
Digital inputs
6 5 4 3 2 1
Pin
Designation
1
Digital input 1 (DI1)
2
Digital input 2 (DI2)
3
Digital input 3 (DI3)
4
Digital input 4 (DI4)
5
Output 1 (O1)
6
Output 1 (O2)
Dry contacts
When the inverter is feeding into the grid, the dry contact is
closed.
Tips for wiring
Ź
Unscrew and carefully pull out the terminal block of the dry
contacts.
Ź
Unscrew and carefully pull out the terminal block of the
digital inputs.
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