Connecting power supply, Cable cross sections, Configuration for shutting down the pc – BECKHOFF C5210 User Manual

Page 22: Pc_on and power status functions, Ups output, Ups output function

Installation

3.4.4 Connecting Power Supply

The external wiring consists of the connection of the power supply, the battery pack (optional) and the
connection of customized components for shutting down the PC.

Cable Cross Sections

For the connection of the power supply, wiring with a cable-cross-section of 1.5 mm

must be used.

With bigger distances between voltage source and PC, you take the voltage drop as a function of the
cable-cross-section as well as voltage fluctuations of your distribution voltage into account, so that is
secured that the voltage doesn't fall under 22 V at the power supply.

Insert fuse

Attention

The power supply must be protected with maximum 16 A.

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.

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.

UPS output

In order to maintain a screen display for the PC in the event of a power failure, the power supply unit is
equipped with a UPS output for connecting a Control Panel. The maximum load for the output is 1.4 A.

UPS output function

• The 24 V DC connection at the UPS output is live even after a power failure. The maximum load

is 1.4 A.

• Once the PC has been de-energized via the UPS software, the UPS output is switched to 0 V.

Any connected panel is thus switched off, and total discharge of the rechargeable battery is
prevented.

C5210