Rotational Speed Limit Values; Phase Synchronization During Supply System Switching; System-Inherent Frequencies; Torsional Loading Of The Drive Train Due To Faults In The Electrical Supply - Siemens SIMOTICS FD 1LL1 Operating Instructions Manual

4.12

Rotational speed limit values

Excessively high speeds
Excessive rotational speed can lead to serious damage to the machine. This can result in
death, serious injury, or material damage.
● Avoid operation above the permissible speed by using the appropriate control function.
● Observe the speeds stamped on the rating plate.
4.13

Phase synchronization during supply system switching

NOTICE
Supply system switching
Damage to the machine may be caused when switching to another supply system with
different phasing.
● The phasing must be synchronized during switching. Use appropriate means to
4.14

System-inherent frequencies

NOTICE
Machine damage caused by system resonances
The system consisting of the foundation and machine set must be configured and matched
in such a way that no system resonances can arise and result in the permissible vibration
levels being exceeded. Excessive vibrations can damage the machine set. The vibration limit
values according to DIN ISO 10816-3 must not be exceeded.
4.15

Torsional loading of the drive train due to faults in the electrical supply

In the event of faults in the electrical connection during operation, excessive air gap torques
can lead to additional mechanical torsional load on the line shaft.
Note
The system planner is responsible for the entire drive train.
SIMOTICS FD 1LL1
Operating Instructions 04/2016
4.15 Torsional loading of the drive train due to faults in the electrical supply
WARNING
synchronize the phasing.
Preparations for use
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