16
Quick installation guide for RPI H3 inverters EU EN 5013227802 02 2016-01-05
Connecting digital inputs and dry contacts (optional)
10
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 en-
vironment and before you hang the inverter onto
the wall. Reasons for this are:
►
You will have to remove the covers from the
connection ports. Water could leak into the
inverter.
►
The terminal blocks inside are not easily
accessible.
2
1
Pos.
Designation
1
Dry contacts
2
Digital inputs and outputs
Digital inputs
1 2 3 4 5 6
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 (DO1)
6
Output 1 (DO2)
Dry contacts
When the inverter is feeding into the grid, the dry contact is
closed.
Connecting a PC via RS485
If you want to use a PC with the Delta Service Software to set up
the inverter, you need a USB/RS485 adapter to connect the PC
to the RS485 terminal block of the inverter.
The USB/RS485 adapter is available from Delta.
Connect the pins according to the following table:
Inverter
USB/RS485 adapter
1
8
DATA+
Pin 3 or 5
Pin 4
DATA–
Pin 4 or 6
Pin 5