Commissioning
CX9020
32
Version: 2.0
6.2
Connecting the power supply
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 power supply terminals require an external voltage source, which provides 24 V DC (-15% / +20%). The
power supply terminal must provide 4 A at 24 V, in order to ensure the operation of the Embedded PCs in all
situations.
A 4 A fuse should be used for the power supply of the Embedded PC.
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
1
2
3
4
8
Table 19: Legend for the connection example
No.
Description
1
The upper spring-loaded terminals identified with “24 V“ and “0 V“ supply the Embedded
PC 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.
The cables of an external voltage source are connected to the power supply unit with spring-loaded
terminals.
Table 20: Required wire cross-sections and strip lengths.
Conductor cross-section
0,5 ... 2,5 mm
2
AWG 20 ... AWG 14
Strip length
8 ... 9 mm
0.33 inch
Summary of Contents for CX9020
Page 1: ...Manual CX9020 Embedded PC 2 0 2019 04 09 Version Date ...
Page 2: ......
