Beckhoff C5240 Manual page 30

Commissioning
Switching on and off with 24 V power supply unit with UPS
If you have ordered your industrial PC with a 24 V power supply unit with integrated UPS instead of a
100-240 V power supply unit, the industrial PC has a power supply socket (X101) and a socket for external
wiring (X102). You can connect an external battery pack to the industrial PC via the voltage socket. The
socket for external wiring contains an input PC-ON and an output Power Status.
You can use the PC-ON input to control the startup and shutdown of the operating system as an alternative
to the ATX push button. The PC-ON signal is inverted, which is why the operating system boots up at 0 V at
the input and shuts down at 24 V. During operation, 0 V must therefore be permanently applied to the input.
If you want to shut down the operating system, you must apply 24 V to the PC-ON input. Once the operating
system has shut down, the PC power supply unit sets the Power Status output from 24 V to 0 V. This
indicates that the shutdown is complete and you can turn off the power supply. You can then switch off the
power supply. If you remove the 24 V from the PC-ON input before you have switched off the power supply,
the operating system restarts. Therefore, 24 V must be applied to the input until you have switched off the
power supply. If you switch off the power supply before you have shut down the operating system properly, it
shuts down using the battery. With frequent use, this shortens the life of the battery.
Besides the main switch of the machine, you can also install an additional ON/OFF switch to turn the
machine on and off. The main switch can thus remain switched on in principle and thus ensures that the PC
is still supplied with power during the shutdown of the operating system. Via the Power Status output, you
can switch, for example, a contactor that switches off the entire system. The load capacity of the Power
Status output is limited to max. 0.5 A. No fuse protection is required.
Driver installation
When you switch on the PC for the first time, the optionally pre-installed operating system will be started. For
any additional hardware you have connected, you have to install the drivers yourself afterwards. In addition,
the Beckhoff Device Manager starts automatically. The Device Manager is a software from Beckhoff that
supports you in configuring the PC.
If you have ordered the PC without an operating system, you must install this and the driver software for the
additional hardware you have connected and for the devices in the PC yourself. Please follow the
instructions in the documentation for the operating system and the additional devices.
UPS software components
The UPS software components with the corresponding drivers must be installed on the PC to operate the
power supply unit as a UPS. The software components and drivers are already installed on delivery of the
PC with operating system. Otherwise, you have to install the installation package Beckhoff UPS yourself.
You can obtain the installation package from Beckhoff Service (service@beckhoff.com), who will provide you
with the package. You then use the installation package to install the UPS software components. The UPS
software components come with a detailed help function. Call up the help files either directly from the
configuration register by clicking the Help button or start the file under Start > Programs > Beckhoff > UPS
software components.
For more detailed information on UPS configuration, refer to chapter 5.2 UPS configuration [} 32].
30 Version: 3.0 C5240