Rotational Speed Limit Values - Siemens 1LA8 Operating Instructions Manual

4.6

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.
4.7 Space requirements
Observe the minimum dimension for the air inlet at the machine site:
Table 4-1
4.8 Voltage and frequency fluctuations during line operation
Unless stated otherwise on the rating plate, the permissible voltage fluctuation is ± 5% and
the permissible frequency fluctuation is ± 2% in accordance with IEC / EN 60034‑1 Range A.
Any fluctuations that are permissible beyond these ranges are stated on the rating plate, e.g.
voltage fluctuation ± 10% in accordance with IEC / EN 60034‑1 Range B.
The following applies: Under practical operating conditions a machine may sometimes have
to be operated outside the limits of Range A. Exceptions of this sort should be limited with
regard to the values that arise, how often and for how long they occur. Where possible and
within a reasonable time take corrective actions such as reducing the power. Such actions can
avoid thermal ageing leading to a reduction in the service life of the machine.
NOTICE
Overheating of the winding
Exceeding the permissible tolerances for voltage and frequency can lead to an impermissibly
high temperature rise in the windings and thus cause long-term damage to the machine.
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014
WARNING
Minimum dimensions for air intake
31.
130 mm
4.8 Voltage and frequency fluctuations during line operation
Shaft height
35.
140 mm
Preparations for use
40.
150 mm
45.
160 mm
31