Communication Connection; Rs485 - Growatt MAC 30KTL3-X LV Installation & Operation Manual

When there is a hanging string in each MPPT, it is necessary to add a
dust plug for waterproof treatment.
NOTICE
D． Cable specification requirements:
PV inverter model
MAC 30KTL3-X LV
MAC 40KTL3-X LV
MAC 50KTL3-X LV
MAC 60KTL3-X LV
MAC 50KTL3-X MV
MAC 60KTL3-X MV
MAC 66KTL3-X MV
MAC 70KTL3-X MV
Notice：1. Under any circumstance, the total current of all strings cannot exceed the inverter's maximum current.
2. Do not touch any working solar panels.
3. Make sure the cable is unbroken.

6.3 Communication Connection

6.3.1 RS485

The MAC series comes standard with two RS485 interfaces, and you can monitor one or more inverters via RS485.
Another RS485 port is used to connect the smart meter (single machine anti-backflow function). When connecting the
RS485 communication line to a single unit, please follow the instructions below.
1) Loosen the AC protective cover and remove the protective cover;
2) Pass the RS 485 communication cable through the waterproof rubber plug and connect to the RS485
3) 3) The inverter is connected hand-in-hand through the RS 485 communication line. The RS485A1 and RS485B1 (4/5/6
port or 7/8/9 port) at the end of the 485 cable are connected to the ShineMaster for remote server monitoring.
4) Lock the protective casing on the inverter frame to prevent water ingress.
Cross-sectional area
（mm ）
2
4-6
4-6
4-6
4-6
4-6
4-6
4-6
4-6
Figure 6-5 RS485 schematic diagram
No. definition
1 RS485B2
Recommended value
（mm ）
2
4
4
4
4
4
4
4
4
description
RS485A2 / B2： Anti-backflow
20 / 57
编号：GR-UM-C -00
Line outer diameter
）
2
range（mm
4.5-7.8
4.5-7.8
4.5-7.8
4.5-7.8
4.5-7.8
4.5-7.8
4.5-7.8
4.5-7.8
interface;