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5 Work Instructions and Safety Precautions
General information
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Trainees should only work with the circuits under the supervision of an instructor.
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Observe the specifications included in the technical data for the individual components, and in
particular all the safety instructions!
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Malfunctions which could impair safety must not be generated.
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Wear personal safety equipment (safety goggles, safety shoes) when working on circuits.
Mechanical system
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Switch off the power supply!
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Switch off both working and control power before working on the circuit.
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Only reach into the setup when it's at a complete standstill.
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Be aware of potential run-on times of the actuators.
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Set all components up so that activation of switches and disconnectors is not made difficult.
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Follow the instructions regarding positioning of the components.
Electrical systems
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Risk of death in case of interrupted protective earth conductor!
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The protective conductor (yellow-green) must not be interrupted, either inside or outside of the
device.
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The insulation of the protective conductor must never be damaged or removed.
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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.
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Do not connect voltage sources in series.
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Risk of death due to electric shock!
Protect the outputs of the power supply units (output sockets/terminals) and cables connected to them
from direct contact.
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Only use cables with adequate insulation and electric strength.
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Use safety sockets with fully shrouded contact points.
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Disconnect from all sources of electrical power!
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Switch off the power supply before working on the circuit.
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Please note that electrical energy may be stored in individual components.
Further information on this issue is available in the datasheets and operating
instructions included with the components.
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