Fundamental safety instructions
16 © Festo Didactic Conveyor
2.6 Safety Sockets
Unless otherwise indicated in the technical data, the following colour coding applies for supply and signal
connections on components of the Festo Didactic Automation and Technology Learning System.
Voltage greater than SELV
e.g. supply voltage of 90 to 400 V AC per
conductor
(grey)
Neutral conductor
(grey-blue)
Undefined potential,
results during the course of experiments
(white)
Safety extra-low voltage
signal input/signal output
(black)
PE conductor
(green-yellow)
Protective grounding terminal
as PE+ contact
The specified protection class and safe use will be achieved, if laboratory safety cables supplied by Festo
Didactic are used.
Notice
The device might not include all the laboratory safety sockets shown above. Further safety
sockets may be included in the training setup.
Warning
Damaged laboratory safety cables must immediately be barred from further use and
removed from the test area.
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