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
"Connecting a UPS" on page 34.
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
established again. A direct connection of the functional earth between the
operator display and the 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 connected to this neutral point.
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) for
the voltage supply.
10.3.2 Connecting a UPS
Please note that the maximum power consumption of the control
cabinet PC does not exceed the maximum output power of the UPS.
34/57
Mounting, demounting and electric installation
IndraControl VPB 40.4
Bosch Rexroth AG R911376309_Edition 02
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