Interference Immunity; Influence On The Line Power Supply Through A Strongly Irregular Torque; Interference Voltages When Operating The Converter - Siemens SIMOTICS SD Operating Instructions Manual

The ESD protective measures required for components that can be destroyed due to
electrostatic discharge are shown in the following drawings:
a = conductive floor sur‐
face
d = ESD overall
2.7

Interference immunity

By selecting suitable signal cables and evaluation units, ensure that the interference immunity
of the machine is not diminished.
2.8 Influence on the line power supply through a strongly irregular
torque
A strongly irregular torque, for example with the drive of a reciprocating motor, forces a non-
sinusoidal motor current. The emerging harmonics can have an impermissible influence on the
line power supply via the connection lines.
2.9

Interference voltages when operating the converter

Interference voltages when operating the converter
When a converter is in operation, the emitted interference varies in strength depending on the
converter (manufacturer, type, interference suppression measures undertaken). On machines
with integrated sensors (e.g. PTC thermistors), interference voltages caused by the converter
may occur on the sensor lead. This can cause faults which can result in eventual or immediate
death, serious injury or material damage.
• Comply with the EMC information provided by the manufacturer of the converter. This is how
you prevent limit values according to IEC/EN 61000-6-2 .... IEC/EN 61000-6-4 for the drive
system (consisting of the machine and converter) from being exceeded.
• You must put appropriate EMC measures in place.
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A
2.9 Interference voltages when operating the converter
b = ESD table
e = ESD wristband
Safety information
c = ESD shoes
f = cabinet ground connection
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