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Manual MCC-1
MA 1249-A009 EN
18
4 Design Requirements
4.1 Electromagnetic Compatibility (EMC)
4.1.1 Remarks
WARNING
Risk of injury by interference of signals and devices!
Perturbed signals can cause equipment to react unexpectedly.
• Connect the controller to
the EMC requirements .
•
In electrically noisy environments ensure the correct execution of the EMC
measures. Disregarding these precautions can cause death, serious injuries
or material damages.
4.1.2 EMC Measures
EMC Measures Effect
Device
Mounting Use cable clamps for shielding, connect
metallic parts at a large area. Good conductivity due
to planar contacts.
Connect the housing via cable diameter
more than 2 mm
2
with potential equalisation.
Reduction of mutual
interference.
Fit switching devices such as contactors,
relays or solenoids with interference or
spark suppressors (e. g. diodes, varistors,
RC elements).
Cabling Keep cables as short as possible.
No
“safety loops“.
Avoidance of capacitive
and inductive
interference
Connect the shielding of all shielded cables
to the housing by the cable clamps to a
large area. Reduction of EMC
emissions.
Lay the cables spatially separated from
each other (distance at least 20 cm):

signal and power cables

power and master cables

line filter input and output cable
Avoidance of mutual
interference