BECKHOFF CP32xx User Manual
Page 20
Mounting
Innovative solution for shutting down Industrial PCs
Industrial PCs equipped with a UPS are in actual use frequently switched off by simply turning off the
supply voltage. In this case the PC shuts down via the battery. However, over time this reduces the
service life of the battery.
The new Beckhoff power supply technology approach addresses this problem and now offers the user the
option of switching the PC off without the need for using the battery, thereby reducing the load on the
battery.
In addition to the main switch this innovative solution uses an ON/OFF switch for the machine. Basically,
the main switch remains switched on and provides the power supply for the PC during shutdown. Via the
PC ON-input of the power supply the PC gets the command to shut down the operating system.
Once the PC has shut down, the PC power supply unit sets the Power Status-output (P-S) to 0, what
indicates that the process is complete and that the main voltage can be switched off. This can be done
manually via a signal lamp connection or via a contactor. With this solution the main switch generally only
has to be switched off if the control cabinet has to be opened. The battery will only be used in the event of
a power failure.
For a detailed functional description please refer to section
18
CP32xx