43
Technical data
and startup
8.3.5
Pin 11 TXD, Pin 12 RXD (RS232 interface)
INFORMATION
This interface is NOT intended for general use! It is designed for firmware updates. Should you have
questions regarding this, refer to BRUSA support at the manufacturing address given in chapter
Internal wiring
47
pF
Pin 12
RXD
33V
47
pF
Pin 11
TXD
33V
RS232-
Transceiver
200
Ω
200
Ω
4
7
0
p
F
4
7
0
p
F
The RS232 port enables a direct, serial connection between the inverter and a PC. You will find the configurations
for this in the manual
SW-FW-SHC3_Firmware_download.pdf
In this document you will find all information regarding programming and the settings necessary for it.
The firmware for the microprocessor can be downloaded over this interface (provided by BRUSA). Pin 13
PRO
must be
high
for this.