Work And Safety Instructions - Festo Safety Relay EduTrainer Notice D'utilisation

5 Work and safety instructions

General
•
Trainees should only work with the circuits under the supervision of an instructor.
•
Observe the specifications included in the technical data for the individual components, and in
particular all the safety instructions!
•
Malfunctions which may impair safety must be avoided.
•
Wear personal safety equipment (safety glasses, safety shoes) when working on circuits.
Electrical systems
• Risk of death in case of interrupted protective earth conductor!
– The protective conductor (yellow-green) must not be interrupted, either inside or outside
of the device.
– The insulation of the protective conductor must never be damaged or removed.
• Risk of death from series connection of power supply units!
Contact voltages of greater than 25 V AC or 60 V DC are not permissible.
Coming into contact with voltages of greater than 50 V AC or 120 V DC may be fatal.
– Do not connect voltage sources in series.
•
Risk of fatal injury due to electric shock!
Protect the outputs of the power supply units (output sockets/terminals) and cables connected to them
from direct contact.
– Only use cables with adequate insulation and electric strength.
– Use safety sockets with fully shrouded contact points.
•
Disconnect from all sources of electrical power!
– Switch off the power supply before working on the circuit.
– Please note that electrical energy may be stored in individual components.
Further information on this issue is available in the data sheets and operating
instructions included with the components.
– Caution
Capacitors inside the device may still be charged even after being
disconnected from all sources of voltage.
•
Devices with a grounding terminal must always be grounded.
– If a ground connection (green-yellow laboratory socket) is available, it must always be
connected to protective grounding. Protective grounding must always be connected first
(before voltage),
and must always be disconnected last (after voltage).
– Some devices have a high leakage current. These devices must be additionally grounded
with a protective earth conductor.
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