Power Supply; Mainboard Power Supply - Beckhoff CB3263 Series Manual

Power Supply

4.2 Power Supply

4.2.1 Mainboard Power Supply

The power supply of the CB3263 is realized via a 2x2pin connector (P20THR-1787014). The main 24V
power lines are assigned to pin 3.
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 1
(PC_START) is for. When pulled high (24V) a regular shutdown without UPS activity is triggered. As a
part of this regular shutdown pin 2 (PC_AKTIV) is pulled from 24V to 0V.
Manufacturer
Phoenix
Description
PC Start
Power Supply 24V
Beckhoff New Automation Technology CB3263-xxxx
Description
P20THR-1787014
Name Pin
PC_START 1
Vin 3
DFMC 1,5/ 2-ST-3,5-LR- 1790292
Name
2 PC_AKTIV
4 GND
Chapter: Connectors
Mating Connector
Description
PC Status
Ground
page 19