Siemens SINAMICS S120 Manuale di istruzioni per l'uso - Pagina 8

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Safety notes

1.1 General safety instructions

Electric shock due to connection to an unsuitable power supply

When equipment is connected to an unsuitable power supply, exposed components may

carry a hazardous voltage that might result in serious injury or death.

• Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV (Protective

Electric shock due to equipment damage

Improper handling may cause damage to equipment. For damaged devices, hazardous

voltages can be present at the enclosure or at exposed components; if touched, this can

result in death or severe injury.

• Ensure compliance with the limit values specified in the technical data during transport,

• Do not use any damaged devices.

Electric shock due to unconnected cable shield

Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected

cable shields.

• Connect cable shields and unused conductors of power cables (e.g. brake conductors) at

Arcing when a plug connection is opened during operation

Opening a plug connection when a system is in operation can result in arcing that may

cause serious injury or death.

• Only open plug connections when the equipment is in a voltage-free state, unless it has

Electric shock due to residual charges in power components

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

WARNING

Extra Low Voltage) output voltages for all connections and terminals of the electronics

modules.

WARNING

storage and operation.

WARNING

least on one side to the grounded housing potential.

WARNING

been explicitly stated that they can be opened in operation.

WARNING

start work.

Option L34 parameterizing the circuit breaker on the output side

Operating Instructions, 03/2021, A5E02914106A