Instructions

1 / 3
Pylon Technologies Official Statement
Dec. 10
th
, 2020
Subject: US2000C/US3000C Communication Settings
Dear valued customer,
It`s been noticed that among new installations of US2000C/US3000C, in few cases of the
modules will suffer buzzer ringing with alarm lighting on permanently after installation in a
short period.
The root cause of buzzer ringing with alarm lighting on permanently is the modules have
experienced overcharge to above 55Vdc or power device on BMS is damaged, which
triggered the secondary protection elements deployed on the BMS. In either case it will
need a replacement of the BMS.
During further analysis, it`s found that in all cases the modules have been overcharged to
above 55Vdc. This is mainly due to the communication between inverter and battery
haven`t been set up properly. Below highlighted two main changings of
US2000C/US3000C which will affect the external communication quality:
1) ADD Switch settings
Based on the new design of BMS, the ADD switch is reversely deployed.
For instance:
Dip1
Dip2
Dip3
Dip4
The corresponding
position of switch
Status
0
0
0
0
RS485:115200
CAN terminal
resistance: connected

Summary of content (3 pages)