BECKHOFF CB3063 - Manual (Page 17)

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.
Pin Name Description
1 GND ground
2 BAT+ battery
3 Vout output voltage
4 S_GND ground (shield)
5 P_VIN# power supply -
6 P_VIN power supply +
7 PC_START PC start
8 PC_AKTIV power status