10.3 Electric connection
10.3.1 Connecting 24 V supply to the control cabinet PC
1. Connect the functional earth.
2. Connect the "X10" interface for the 24 V voltage supply to the industrial
power supply unit or to the UPS (if available).
For details on how to connect to a UPS, refer to chapter 10.3.2 "Connect-
ing a UPS" on page 33.
Material damages to electronics due to missing
functional earth!
Ensure that the functional earth is connected, as otherwise the electronics can
be destroyed by a potential difference between the operator display and the
control cabinet PC if the voltage supply is interrupted to only one device and es-
tablished again. A direct connection of the functional earth between operator
display and control cabinet PC is optimal. If the functional earth is connected to
a neutral point, the control cabinet PC and the operator display have to be con-
nected to this neutral point.
For the voltage supply, use a 24 V industrial power supply unit acc. to DIN EN
60742, classification VDE 0551, for example "VAP01.1H-W23-024-010-NN" (part
number R911171065).
10.3.2 Connecting a UPS
General information
Please note that the maximum power consumption of the control
cabinet PC does not exceed the maximum output power of the UPS.
Control Cabinet PC Bosch Rexroth AG
Mounting, demounting and electric installation
DOK-SUPPL*-VPB*40.3***-IT05-EN-P
33/57
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