Beckhoff CB7268, Оригинальное руководство

Страница: 13 / 85

External connections
CB7268 13 Version: 1.1
5.3 Front panel: Power supply (X101)
Fig. 3: CB7268 Power X101
The connection for the power supply is implemented as a 2x2 pin housing connector (P20THR-1818504).
The main power supply (24 V) for the module is on pin 3. This can also be implemented as UPS-OCT (One
Cable Technology), i.e. the signal for the UPS is also transmitted to the board via this cable.
Please note that there are system states in which the activation of a connected PC_Start switch is
ignored by the system, e.g. during booting of a Windows operating system.
In this case, repeat the operation of the switch after a few seconds.
The same applies to connected PC_Start push buttons.
Pin assignment of the power plug:
Description Signal Pin Signal Description
PC_On: Input for
starting and shutting down
the PC.
Low (0 V or open
contact): PC starts.
High (>3 V): PC shuts
down.
PC_On 1 3 Vin 24 V supply voltage
UPS-OCT is supported.
Power status: Output of the
Power Status. The
voltage corresponds to the
positive supply voltage and
can be loaded up to
500 mA.
Low (0 V): PC is off.
High (Vin): PC is on.
PC_ACTIVE 2 4 GND Ground