BECKHOFF C9900-P208 - Manual (Page 13)

Installation Instructions
C9900-P208 / C9900-P209 11
Power supply of the Industrial PC
The 5-pin pin strip with CAGE CLAMP connection and mounting flanges
shown on the photograph is mounted on the PC case for connecting the
power supply and the battery pack.
Pin assignment for
connecting the power
supply and the battery pack
Pin Function
1 +
2 -
24 V DC Power Supply
3
4 +
5 -
Battery Pack
(C9900-P209 only)
Configuration for shutting down the PC
The connections for shutting down the Industrial PCs are established via
the PC_ON input and the Power Status output. The third contact is
connected to 24 V. To this end, a 3-pin pin strip with CAGE CLAMP
connection and mounting flanges is installed at the PC case.
Pin assignment for
connecting the on/off switch Pin Function
1 Power-Status
2 PC_ON
3 + 24 V
PC_ON and Power Status functions
 If
the PC_ON input is connected to 24 V via a switch, the PC shuts
down according to the rules. The PC_ON signal is inverted, i.e. the
PC shuts down if the 24 V connection is live.
 If
the PC_ON input is NOT connected by the user, the PC can be
booted in the familiar way by connecting the supply voltage and shut
down via the battery by switching off the supply voltage.
Service life of the rechargeable battery
Attention
This procedure significantly reduces the service life of the rechargeable
battery and should therefore not be used.

Once the PC has shut down, the Power Status output is switched
from 24 V to 0 V. Via this output a signal lamp can be connected or a
contactor for de-energizing the whole system. The maximum load for
the Power Status output is 0.5 A and a suitable fuse should be
provided.
5 4 3
2 1
1
2
3