Space Requirements; Voltage And Frequency Fluctuations During Line Operation; System-Inherent Frequencies; Table 4-1 Minimum Dimensions For Air Intake - Siemens SIMOTICS TN Series Operating & Installation Instructions Manual

Preparations for use

4.10 Space requirements

4.10 Space requirements
Observe the minimum dimension for the air inlet at the machine site:
Table 4-1
4.11

Voltage and frequency fluctuations during line operation

If nothing else is stamped on the nameplate, then the permissible voltage fluctuation is ±5 %
and the permissible frequency fluctuation is ±2 %, corresponding to range A in
IEC / EN 60034‑1. Permissible fluctuations that go beyond this are specified on the nameplate,
e.g. voltage fluctuation of ±10 % corresponding to range B in IEC / EN 60034‑1.
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.
4.12

System-inherent frequencies

NOTICE
System resonances
Excessive vibrations and system resonances can damage the machine set.
● Configure and match the system consisting of the foundation and machine set in such a
● The vibration limit values according to DIN ISO 10816-3 must not be exceeded.
30
Minimum dimensions for air intake
31.
130 mm
way that no system resonances can arise and result in the permissible vibration levels
being exceeded.
Shaft height
35.
140 mm
40.
150 mm
SIMOTICS TN Series N-compact 1LL8
Operating Instructions 11/2018
45.
160 mm