SB-Motor - Orbit Motion Technologies

6 Maintenance
Therefore observe the following EMC rules:
� Choose the earthing option with the lowest possible ohm rate
(e.g. unpainted mounting board of the switching cabinet) for
installation.
� Contact the largest possible surface (skin effect). If necessary,
remove existing paint to achieve large-surface contact.
� From the Central Earthing Point (CEP), lay earthing wires to the
respective connections in a star structure. Earthing circuits are
not admissible and can cause unnecessary distortions.
� Use shielded cables only.
� Only large-surface shield transitions are admissible.
� Shields must not be contacted via pin contacts of connector
plugs.
� By all means observe the switching proposals.
� Cut motor cables to minimum length.
� Do not lay cable circuits inside the switching cabinet.
CAUTION!
Electromagnetic fields!
Disturbances or failure of the system possible!
� With the installation the following rules must be considered, in
order to exclude consequences of excessive disturbance effects
as far as possible.
� In connection with electronic controls, no inductive loads whatsoever
must be switched without suitable interference elimination.
� For DC operation, suitable interference elimination can be
achieved by arranging recovery diodes. For AC operation, commercially
available erasing elements matching the connector
type can be used.
� Only the interference elimination element mounted immediately
at the point of inductivity serves this purpose. In any other case,
the switching pulse may even emit increased interference via the
interference elimination elements. It is much easier to avoid
sources of interference in the first place, than to eliminate the
effects of existing interference.
� In no case must the contacts switching unshielded inductive
loads be arranged in the same room as the MC-4 MotorController;
the same goes for cables carrying unshielded, switched
inductivity and cables running parallel to them. The control must
be separated from such „distorters“ by a Faraday cage (own
section in the switching cabinet).
page 26 SB-Motor PacDrive
Korrekturausdruck
MSB_OpMan_06_us.FM