Power Supply; Connect Embedded Pc; Table 6 Legend For The Connection Example - Beckhoff CX2100-0004 Manual

5.2

Power supply

This chapter describes how to connect the power supply unit CX2100-0004. This documentation uses the
Embedded PC CX2020 to demonstrate the procedure.
5.2.1

Connect Embedded PC

Damage to the Embedded PCs
The Embedded PCs may be damaged during wiring.
• The cables for the power supply should only be connected in de-energized state.
The CX2100-0004 power supply units require an external voltage source, which provides 24 V DC (-15% /
+20%).
The cabling of the Embedded PC in the control cabinet must be done in accordance with the standard EN
60204-1:2006 PELV = Protective Extra Low Voltage:
• The "PE" and "0 V" conductors of the voltage source for a basic CPU module 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 earth conductor system.
Connection example with CX2020 basic CPU module and CX2100-0004 power supply unit:
Table 6: Legend for the connection example.
No. Description
1 The upper spring-loaded terminals identified with "24 V" and "0 V" supply the basic CPU
module and the terminal bus (data transfer via K- or E-bus).
2 The spring-loaded terminals identified as "+", "-" and "PE" supply the Bus Terminals via
the power contacts and the sensors or actuators connected to the Bus Terminals.
CX2100-0004
NOTE
Version: 1.2
Commissioning
19