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The necessary ESD protective measures for electrostatic sensitive devices are illustrated once
again in the following drawings:
a = conductive floor surfaceb = ESD table
d = ESD overall
2.6
Interference immunity
By selecting suitable signal cables and evaluation units, companies operating complete plants
and systems must ensure that the interference immunity of the machine is not diminished.
2.7
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.
2.8
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
● You must put appropriate EMC measures in place.
SIMOTICS TN Series N-compact 1LH8
Operating Instructions 06/2017
WARNING
how you prevent the limit values stipulated by IEC/EN 61000-6-3 for the drive system
(consisting of the machine and converter) from being exceeded.
e = ESD wristband
Safety information
2.6 Interference immunity
c = ESD shoes
f = cabinet ground connection
17
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