Beckhoff CB2051 Manuel d'utilisateur Page 13

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Power Supply Chapter: Connectors
Beckhoff New Automation Technology CB2051 page 13
3 Connectors
3.1 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
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