Siemens SINUMERIK 808D Manuel d'entretien - Page 5
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WARNING
Danger to life through a hazardous voltage when connecting an unsuitable power supply
Touching live components can result in death or severe injury.
Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV- (Protective Extra Low
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Voltage) output voltages for all connections and terminals of the electronics modules.
WARNING
Danger to life when live parts are touched on damaged motors/devices
Improper handling of motors/devices can damage them.
For damaged motors/devices, hazardous voltages can be present at the enclosure or at exposed components.
Ensure compliance with the limit values specified in the technical data during transport, storage and
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operation.
Do not use any damaged motors/devices.
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WARNING
Danger to life through electric shock due to unconnected cable shields
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected cable shields.
As a minimum, connect cable shields and the cores of cables that are not used at one end at the grounded
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housing potential.
WARNING
Danger to life due to electric shock when not grounded
For missing or incorrectly implemented protective conductor connection for devices with protection class I, high
voltages can be present at open, exposed parts, which when touched, can result in death or severe injury.
Ground the device in compliance with the applicable regulations.
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WARNING
Danger to life due to electric shock when opening plug connections in operation
When opening plug connections in operation, arcs can result in severe injury or death.
Only open plug connections when the equipment is in a no-voltage state, unless it has been explicitly stated
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that they can be opened in operation.
WARNING
Danger to life through electric shock due to the residual charge of the power component capacitors
Because of the capacitors, a hazardous voltage is present for up to 5 minutes after the power supply has been
switched off. Contact with live parts can result in death or serious injury.
Wait for 5 minutes before you check that the unit really is in a no-voltage condition and start work.
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NOTICE
Material damage due to loose power connections
Insufficient tightening torques or vibrations can result in loose electrical connections. This can result in damage due to fire,
device defects or malfunctions.
Tighten all power connections with the specified tightening torques, e.g. line supply connection, motor connection, DC
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link connections.
Check all power connections at regular intervals. This applies in particular after transport.
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WARNING
Danger to life due to fire spreading if housing is inadequate
Fire and smoke development can cause severe personal injury or material damage.
Install devices without a protective housing in a metal control cabinet (or protect the device by another equivalent
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measure) in such a way that contact with fire is prevented.
Ensure that smoke can only escape via controlled and monitored paths.
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Service Manual
01/2017
5