Connecting The Industrial Pc; Mounting Power Supply Cable; Fig. 18 Telescopic Rails Mounted - Beckhoff C5240 Manual

Fig. 18: Telescopic rails mounted
4.3

Connecting the Industrial 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 prepare the industrial PC for operation, it must be connected. The first step is to ground the device. Then
you can connect the cables and the power supply.
In its basic configuration, the industrial PC is equipped with a 100-240 V AC, 50-60 Hz full-range power
supply unit. The following ordering options are available:
• C9900-P208: 24 V DC power supply unit, instead of 100-240 V AC full-range power supply unit,
occupies one serial interface
• C9900-P209: 24 V DC power supply unit with integrated UPS, instead of 100-240 V AC full-range
power supply unit, occupies one serial interface
If you have ordered the PC with one of the ordering options for a 24 V DC power supply unit, wire the
industrial PC in the 19-inch rack in accordance with the EN 60204-1:2006 standard Protective Extra Low
Voltage (PELV):
• 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.
Devices connected to the industrial PC with their own power supply must have the same potential for the PE
and "0 V" conductors as the industrial PC (no potential difference).
4.3.1

Mounting power supply cable

If you have ordered your industrial PC with a 24 V power supply, you must first mount the cable for the
power supply on the connector and then mount the strain relief.
For this purpose, use the supplied material for connector assembly. This consists of the 5-pin connector and
the strain relief housing with cable clamp and fixing screws.
If you need a replacement for the power supply connector and strain relief housing, you can order this from
Beckhoff Sales by specifying the following ordering option:
• C9900-P917: Power supply connector for industrial PC, connector with strain relief for the external
supply cable with 24 V label
Mounting power supply cable
First mount the plug on the cable as follows:
1. Remove 28 mm of the cable sheath.
C5240
CAUTION
Version: 3.0
Commissioning
23