Lenze 8615E - Manual (Page 24)

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4.2.3 CE-typical drive system
Components of the CE-typical drive sytem
System components Specification
Controller Unit types 8600
For type designation see inner cover page
RFI filter For data and data assignment see chapter 6.6, section: Planning of
the Operating Instructions.
Mains choke For data and data assignment see chapter 6.2, section: Planning of
the Operating Instructions.
Motor cable Screened power cable with tin-plated E-CU braid (85 % optically
covered)
Mains cable between RFI filter and
controller Longer than 0.3 m:
Screened power cable with tin-plated E-CU braid (85 % optically
covered).
Control cables Screened signal cable type LIYCY
Encoder cable for incremental encoder
or master frequency Screened signal cable, paarweise verdrillt, twisted in pairs, tin-plated
E-CU braid (at least 75 % optically covered).
Motor Standard three-phase AC asynchronous motor
Lenze type DXRA or similar
Controller, RFI filter and mains choke are mounted on one
assembly board.
The system components are functionally wired according to the
chapter 5, section: Planning of the Operating Instructions.
Installation of CE-typical drive systems
The electromagnetic compatibility of a machine depends on the
method and accuracy of the installation. Special care must be taken
of:
•
filters,
•
screens and
•
grounding.
Filters
Only use suitable mains filters and mains chokes.
Mains filters reduce impermissible high-frequency disturbances to a
permissible value.
Mains chokes reduce low-frequency disturbances, especially those
caused by long motor cables.
Motor cables which are longer than 50 m must be protected
additionally (motor filter or motor supply filter).
Screens
All cables from and to the inverter must be screened.
Lenze system cables meet these requirements.
Ensure that the motor cable is laid separately from the other cables
(signal cables and mains cables). Mains input and motor output
must not be connected to one terminal strip.
Lay cables as close as possible to the reference potential. Dangling
cables are like antennas.
Grounding
Ground all metall-conductive components (controllers, mains filters,
mains chokes) using suitable cables from a central point (PE bar).
Maintain the min. cross sections prescribed in the safety
regulations. For EMC, the surface of the contact is important, not
the cross section.