4
Mounting and installation
24
Festo – GDCP-CMCA-INST-EN – 1211a – English
4.2
Electrical installation
4.2.1
Safety instructions
Warning
Danger of electric shock from voltage sources.
•
Attach the control system directly to the mains switch. Do not use a plug.
•
Install strain relief for the connecting cable of the supply voltage and for the motor
cables.
•
Make sure that the supply voltage is switched off during the entire installation
(switch voltage-free) and secure it against unintended restart.
Only disconnection of the supply voltage in the supply line (fuse or separate switch)
switches voltage off in the connected control system.
•
Wait at least one minute after switching off the supply voltage before starting work
on plugs and interfaces so that the residual voltage can drop below 60 V.
•
Due to the high leakage current, use a protective earth conductor with a minimum
cross section of 10 mm² (copper) or 16 mm² (aluminium).
•
Only use power sources which guarantee reliable electrical isolation of the operating
voltage in accordance with EN 60204-1.
•
For reasons of safety, always connect all PE protective earth conductors prior to
commissioning.
•
Observe the regulations of EN 50178 and EN 60204-1 for protective grounding dur-
ing installation.
Warning
Danger of electric shock even if mains switch is shut off.
The control system is only completely voltage-free if all supply lines have been switched
voltage-free.
•
Switch off all supply lines (also external voltage) prior to assembly, installation
and/or maintenance work and secure them from being restarted accidentally.
•
Switch the voltage back on only after completion of work.
Note
The power supply must be secured at the mains with a maximum of 20 A (slow-blow).
