Options; Safety Information - Siemens SINAMICS S120 Manual

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8.1

Safety information

You must read and observe the "Safety information" chapter in this Manual.
When carrying out any kind of work on electrical devices, the following five safety rules
must always be observed:
1. Disconnect from power supply.
2. Protect against reconnection.
3. Make sure that the equipment is de-energized.
4. Ground and short-circuit.
5. Cover or enclose adjacent components that are still live.
The cabinet units are operated with high voltages.
All connection work must be carried out when the cabinet is de-energized.
All work on the unit must be carried out by trained personnel only.
Work on an open cabinet must be carried out with extreme caution because external supply
voltages may be present. The power and control terminals may be live even when the
motor is not running.
Dangerously high voltage levels are still present in the unit up to 5 minutes after it has been
disconnected due to the DC link capacitors. For this reason, the cabinet should not be
opened until a reasonable period of time has elapsed.
The user is responsible for ensuring that the motor, inverter, and other devices are installed
and connected in accordance with the recognized technical rules in the country of
installation and with other applicable regional regulations. Special attention should be paid
to cable dimensioning, fuses, grounding, shutdown, disconnection, and overcurrent
protection.
If an item of protective gear trips in a branch circuit, a leakage current may have been
disconnected. To reduce the risk of fire or an electric shock, the current-conducting parts
and other components in the cabinet should be inspected and damaged parts replaced.
When an item of protective gear trips, the cause of the trip must be identified and rectified.
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A
DANGER
DANGER
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