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3 connectors, 1 power supply – BECKHOFF CB2051 User Manual

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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