Festo Электроцилиндр - Manual (Page 34)

4 Electrical installation
34 Festo – GDCP-CMMO-ST-EA-SY-EN – 1301a – English
Protection against electric shock (protection against direct and indirect contact) is guaranteed in
accordance with IEC/DIN EN 60204-1 by using PELV circuits (Electrical equipment of machines, general
requirements).
Warning
• Use only PELV circuits in accordance with IEC/DIN EN 60204-1 (protective extra-low
voltage, PELV) for the electrical power supply.
Also comply with the general requirements for PELV circuits laid down in
IEC/DIN EN 60204-1.
• Use only power units which guarantee reliable electrical isolation of the operating
voltage as per IEC/DIN EN 60204-1.
Caution
Damage to the device
The power supply inputs have no special protection against overvoltage.
• Make sure the permissible voltage tolerance is never exceeded.
Technical data of the voltage supply: ( appendix A.1).
4.3 Functional earth
The metal sub-base of the CMMO-ST is used as a functional earth. It is galvanically isolated from the
power supply and, among other things, ensures EMC safety.
Note
• Connect the metal sub-base of the CMMO-ST to the earth potential with low
impedance (short cable with large cross section).
This prevents interference from electromagnetic sources and ensures electromagnetic
compatibility in accordance with EMC directives.