
Chapter: Connectors Power Supply
page 16 Beckhoff New Automation Technology CB3052
3.2 Power Supply
The power supply of the hardware module is realized via a 2x8-pin connector (Molex PS 43045-16xx,
mating connector: Molex PS 43025-16xx). The 12 volt supply is needed for PCI-Express cards and for the
fan connector. COM3 RXD and TXD can also be used for connecting a second power supply unit, e. g.
for UPS. As an ordering option SMBus signals SCL/SDA can be provided (replacing COM3 TXD/RXD).
Description Name Pin Name Description
COM3 transmit data TXD 1 9 RXD COM3 receive data
PSU on PS-ON 2 10 RESET# PSU reset
powerbutton PSU PWRBTN# 3 11 SVCC standby-supply 5V
12 volt supply 12V 4 12 12V 12 volt supply
ground GND 5 13 GND ground
ground GND 6 14 GND ground
5 volt supply VCC 7 15 VCC 5 volt supply
5 volt supply VCC 8 16 VCC 5 volt supply
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