Electrical Installation - Festo CAMC-G-S3 Manual

3 Mounting and installation
3.2

Electrical installation

3.2.1 Safety instructions
Warning
Danger of the failure of the safety function!
In mechanical equipment without the impact of external forces, it can always be as­
sumed that a loss of energy will lead to the safety status (idle current principle). This
must be shown/confirmed by the danger and risk analysis of the application.
A failure of the safety function can result in serious, irreversible injuries, e.g. due to
uncontrolled movements of the connected actuator technology.
• Ensure that your application has a reliable power supply or provide other appropri­
ate measures.
The requirements of EN 60204-1 must be fulfilled during installation. If this is not possible, then fault
exclusion can be achieved by using a safety switching device and cross-circuit detection.
Warning
Danger of electric shock from voltage sources without protective measures.
• For the electric logic supply, use only PELV circuits to EN 60204-1 (Protective Extra-
Low Voltage, PELV).
• Observe the general requirements in accordance with EN 60204-1 for PELV circuits.
• Use only voltage sources that ensure a reliable electric separation of operating
voltage from other active circuits in accordance with EN 60204-1.
Through the use of PELV circuits, protection against electric shock (protection against direct and indir­
ect contact) is ensured in accordance with EN 60204-1. The 24 V power supply unit used in the system
must be able to cope with the voltage interruption defined in the EN 60204-1.
The cable is connected by means of two plugs. As a result, cables can remain plugged into the sockets
when replacing the safety module, for example.
Make sure that no jumpers or the like can be inserted parallel to the safety wiring. For
example, use the maximum wire cross section of 1.5 mm or appropriate wire end sleeves
with insulating collars.
Use twin wire end sleeves for looping through lines between adjacent equipment.
ESD protection
At unassigned plug connectors, damage can occur to the device or to other system parts as a result of
ESD (electrostatic discharge). Earth the system parts before installation and use appropriate ESD
equipment (e. g. earthing straps etc.).
144 Festo – GDCP-CAMC-G-S3-EN – 1406NH – English