Connecting The Panel Pc; Fig. 15 Control Cabinet Installation - Beckhoff CP22 Series Manual

Commissioning
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Fig. 15: Control cabinet installation
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2 Technical data [} 49]
4.3

Connecting the Panel PC

Risk of electric shock
Dangerous touch voltages can lead to electric shock. To avoid electric shock, observe the following:
• Never connect or disconnect the device cables during a thunderstorm.
• Provide protective earthing for handling the device.
To make the device ready for operation, you have to connect it. The first step is to ground the device. Then
you can connect the cables and the power supply.
An external power supply unit is required to supply 24 V DC (-15 %/+20 %) for the operation of the device.
The cabling of the panel PC in the control cabinet must be done in accordance with the standard EN
60204-1:2006 PELV = Protective Extra Low Voltage:
• The PE conductor (protective earth) and the "0 V" conductor of the voltage source must be on the
same potential (connected in the control cabinet).
• Standard EN 60204-1:2006, section 6.4.1:b stipulates that one side of the circuit, or a point of the
energy source for this circuit must be connected to the protective conductor system.
Peripheral devices connected to the device with their own power supply must have the same potential for the
PE and "0 V" conductors as the control panel (no potential difference).
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CAUTION
Version: 2.9
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CP22xx