Power Supply - Beckhoff CB3053 Manual

Chapter: Connectors

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 (UPS_OUT) 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_ON#) is for.
When pulled high (24V) a regular shutdown without UPS activity is triggered. As a part of this regular
shutdown pins 3 (UPS_OUT) and 8 (Power Status) are pulled from 24V to 0V. Any devices connected to
UPS_OUT will thus also be switched off without discharging the UPS.
Pinout power connector:
Name
Pin
1 BATT24V#
2 BATT24V
3 UPS_OUT
4 GND
5 24V#
6 24V
7 PC_ON#
8 PWRSTAT
page 18
Pb-accu 24V -
Pb-accu 24V +
UPS outgoing supply 24V
ground
power supply 24V -
power supply 24V +
power on
power status
Description
Beckhoff New Automation Technology CB3053

Power Supply