Overview of communications card
The connections for RS485, the digital inputs,
the dry contacts and the external power-off
(EPO) are all on the communication card. This
means that the installation work can be com-
bined.
3
1
2
4
5
1
2 x dry contacts (terminal box)
2
DIP switch for RS485 termination resistor and VCC
3
Digital inputs and external power-off (terminal block)
4
RS485 (terminal block)
5
Protection against electromagnetic interference (EMI)
Connecting a PC via RS485
If you wish to use a PC with the Delta Service Software for set-
ting up the inverter you will need a USB/RS485 adapter in order
to connect the PC to the inverter.
Inverter
USB/RS485 adapter
DATA+ Terminal 3 or 5
D+
DATA– Terminal 4 or 6
D–
ATTENTION
Unwanted currents.
Unwanted currents can flow when multiple
inverters are connected via RS485.
► Do not use GND and VCC.
► If the cable shield is used for providing
lightning protection then the housing of only
one inverter in the RS485 chain should be
grounded.
4. Do not skew the screws. The screw heads must be flush
with the surface.
45
Quick installation guide for solar inverter M88H RPI883M121300 RPI883M122300 EU V1 EN 5017414200_00 2019-11-07
Connecting the communication card
Overview
