Influence On The Line Power Supply Through A Strongly Irregular Torque; Interference Voltages When Operating The Converter; Special Designs And Construction Versions; Special Conditions For Use - Siemens SIMOTICS XP Operating Instructions Manual

2.10 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.
2.11

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 the limit values stipulated by 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.
2.12

Special designs and construction versions

Before carry out any work on the machine, determine the machine version.
If there are any deviations or uncertainty, contact the manufacturer, specifying the type
designation and serial number (see the rating plate), or contact the Service Center
(Page 143).
2.13

Special conditions for use

Excerpt from the EU prototype test certificates, point 17 or the IECEx Certificates of
Conformity.
• Flameproof joints may only be repaired strictly in accordance with the manufacturer's
specifications. Repair in accordance with the values in Tables 2 and 3 of EN/IEC 60079-1:
2014 is not permitted.
• To close the the flameproof compartment, as a result of the ambient temperature, screws
with a tensile yield point of at least 450 N/mm² are permissible.
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 10/2021, A5E41926185A

2.10 Influence on the line power supply through a strongly irregular torque

Safety information
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