Power Supply
Chapter:
Connectors
Beckhoff New Automation Technology
CB3051
page 15
4.2 Power Supply
The power supply of the hardware module is effected via a 2x8-pin connector (Molex PS 43045-16xx,
mating connector: Molex PS 43025-16xx). The pins for 12 volt have the sole purpose of supplying one or
both fans with the necessary current. Thus, when no fan is installed, these pins have no function. 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
Summary of Contents for CB3051
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