Growatt MAC 30KTL3-X LV - 6.3 Communication Connection; 6.3.1 RS485

编号：GR-UM-C -00
20 / 57
NOTICE
When there is a hanging string in each MPPT, it is necessary to add a
dust plug for waterproof treatment.
D． Cable specification requirements:
PV inverter model
Cross-sectional area
（mm
2
）
Recommended value
（mm
2
）
Line outer diameter
range（mm
2
）
MAC 30KTL3-X LV
4-6
4
4.5-7.8
MAC 40KTL3-X LV
4-6
4
4.5-7.8
MAC 50KTL3-X LV
4-6
4
4.5-7.8
MAC 60KTL3-X LV
4-6
4
4.5-7.8
MAC 50KTL3-X MV
4-6
4
4.5-7.8
MAC 60KTL3-X MV
4-6
4
4.5-7.8
MAC 66KTL3-X MV
4-6
4
4.5-7.8
MAC 70KTL3-X MV
4-6
4
4.5-7.8
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 interface;
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.
Figure 6-5 RS485 schematic diagram
No.
definition
description
1
RS485B2
RS485A2 / B2： Anti-backflow