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Power Supply Chapter: Connectors

Beckhoff New Automation Technology CB3063 page 17

4.2 Power Supply

The power supply of the hardware module is realized via an 8pin connector (Weidmüller 180537-0000).

The main 24V power lines are assigned to pins 5 and 6. An external Pb-battery can be connected to pins

1 and 2 to provide UPS functionality. Contact your sales person to discuss suitable battery packs.

Pin 3 (VOUT) is a 24V output (max. 2A), which is supported by the UPS (Pb-accu or capacitors) in the

event of a power failure. One possible application would be to use this output to supply a display device

which would then be able to display information about the power failure and the imminent system

shutdown.

If a UPS is present you need to have a possibility to shut down the board in a regular way without

activating the UPS, thereby preventing premature aging of UPS components. That's what pin 7

(PC_START) is for. When pulled high (24V) a regular shutdown without UPS activity is triggered. As a

part of this regular shutdown pins 3 (VOUT) and 8 (PC_AKTIV) are pulled from 24V to 0V. Any devices

connected to VOUT will thus also be switched off without discharging the UPS.

Name

Description

GND

ground

BAT+

battery

Vout

output voltage

S_GND

ground (shield)

P_VIN#

power supply -

P_VIN

power supply +

PC_START

PC start

PC_AKTIV

power status

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 92 93

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Beckhoff CB3063 Manual do Utilizador Página 17