Power supply
Notice | |
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 terminal requires 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 one point of the energy source for this circuit must be connected to the protective earth conductor system.
Connections
No. | Description |
|---|---|
1 | The upper spring-loaded terminals labeled "24 V Us" and "0 V Us" supply the basic CPU module and the terminal bus (data transfer via K- or E-bus) with voltage. |
2 | The spring-loaded terminals labeled "+24 V Up" and "0 V Up" supply the multi-functional I/Os, the bus terminals, and EtherCAT Terminals with voltage via the power contacts. |
Fuse
- When dimensioning the fuse for the system voltage (Us), take the maximum power consumption of the embedded PC into account (see: Technical data)
- Protect the power contacts (Up) with a fuse with a max. rating of 10 A (slow-blow).
Interrupting/switching off the power supply
To switch off the embedded PC, do not disconnect the ground (0 V), because otherwise current may continue to flow via the shielding, depending on the device, and damage the embedded PC or peripheral devices.
Always disconnect the 24 V line. Devices connected to the embedded PC which have their own power supply (e.g. a panel) must have the same potential for "PE" and "0 V" as the embedded PC has (no potential difference).