Electromagnetic Compatibility - HEIDENHAIN SRP 5000 Mode D'emploi

2.5.2

Electromagnetic compatibility

When installed or mounted according to the instructions
and provided that HEIDENHAIN cables are used, the
system fulfills the requirements for electromagnetic
compatibility according to EMC Directive 2014/30/EU
regarding the generic standards for:
Noise immunity (EN 61000-6-2)
Emission (EN 61000-6-4)
Protect your equipment from interference by
observing the rules and recommendations in
these Instructions.
Sources of electrical interference
Electrical interference is caused mainly through capacitive
or inductive transfer. Inductive transfer can be introduced
into the system over signal lines and input or output
terminals.
Typical sources of electrical interference include:
Strong magnetic fields from transformers, brakes and
electric motors
Relays, contactors and solenoid valves
High-frequency equipment, pulse devices, and stray
magnetic fields from switch-mode power supplies
AC power lines and supply lines to the above devices
Interference and noise immunity
The fast switching processes and high coupling
capacitance of variable-speed three-phase motors with
frequency inverters result in substantial interference to
ground. This interference is not only spread along the
lines, but it is also radiated.
Adequate protective measures must be taken
to suppress the interference levels.
Conducted interference
Conducted interference
is high-frequency interference from the PWM
operation (pulse-width modulation) of the inverter
system
is power line disturbance due to non-sinusoidal current
drain
spreads mainly through the power line
Adequate protective measures must be taken
to suppress conducted interference.
HEIDENHAIN | Betriebsanleitung SRP 5000 | 5/2017
Radiated interference
Radiated interference
is high-frequency interference spreading in the form of
electromagnetic waves
is radiated from the motor cable, the inverter housing
and the motor itself
is taken up by electric consuming devices and their
connecting leads, and then fed back into the power
line as interference current
Adequate protective measures must be taken
to suppress radiated interference.
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