Lenze 8400 BaseLine Manual - Manual (Page 59)

Electrical installation
Installation according to EMC (installation of a CE-typical drive system)
Detecting and eliminating EMC interferences
6

59 EDS84ABD302 EN 4.0
6.2.7 Detecting and eliminating EMC interferences
Fault Cause Remedy
Interferences to analog
setpoints of devices and
measuring systems
Unshielded motor cable Use shielded motor cable
Contact surface of shield is too small Provide optimum shielding according to
instructions
Shield of the motor cable is interrupted
by terminal strips, switches etc.
z
Keep components separated from all
other parts by at least 100mm
z Use motor choke
Additional, unshielded cables are
installed within the motor cable (e.g. for
motor temperature monitoring)
Separate the additional cables and shield
them
Unshielded motor cable ends too long Shorten unshielded cable ends to
maximally 40 mm
Conducted interference
level is exceeded on the
supply side
Terminal strips for the motor cable are
directly installed next to the supply
terminals
Keep the terminals strips for the motor
cable separated from the supply and
other control terminals by at least 100
mm
Painted mounting plate Optimise PE connection:
z
Remove paint
z Use zinc-coated mounting plate
HF short circuit Check cable routing