Siemens SIMOTICS A 1FU8, Operating Instructions Manual

Page: 185 / 226

Operation
8.2 Safety instructions
1FU8
Operating Instructions, 02/2016, 5 610 70000 02 000
71
8.2.2 Dangerous voltage when the rotor rotates
WARNING
Dangerous voltage when the rotor rotates
There are dangerous voltages at the terminals while the machine rotor rotates and
immediately afterwards.
You must observe the following safety instructions to prevent death, injury or material
damage:
•
Do not touch the terminals while the rotor is rotating and immediately afterwards.
• To discharge the winding, after the rotor comes to a standstill, connect the winding to
ground potential.
8.2.3 Safety instructions during operation
Switching on the machine
DANGER
Hazardous voltages
Electrical machines are at hazardous voltage levels. Contact with these can result in death,
serious injury or material damage.
Operating the machine on a line supply system with a non-grounded neutral point is only
permitted for short periods of time that occur rarely, e.g. the time leading to a fault being
eliminated. Cable ground fault EN / IEC 60034-1.
NOTICE
Damage to the machine or premature bearing failure
The bearings can be damaged if the following is not observed.
•
It is absolutely crucial that you maintain the permissible vibration values to avoid
damage to the machine or its destruction.
•
In operation, observe the vibration values in accordance with ISO 10816.
• Under all circumstances maintain the minimum radial load of cylindrical roller bearings
of 50% corresponding to what is specified in the catalog.
•
Take the appropriate measures to reduce bearing currents. Observe the Chapter
Converter operation.