Emc And Esd Considerations - ABB FOX615 Installation & User Manual

P R E P A R I N G F O R I N S T A L L A T I O N
WARNING
2.3.3

EMC and ESD considerations

WARNING
22
Hazardous voltages. Risk of electric shock!
Poor cabling and earthing present a danger to personnel and might lead to
seriously damaged equipment.
→ It is mandatory to connect the earthing / bonding terminal of the FOX
subrack to a suitable protective ground e.g. the Common Bonding
Network!
The description of lightning and over-voltage protection is beyond the scope
of this installation guide. For more information on the implementation of light-
ning and over-voltage protection, refer to
Protection.
The FOX615 subrack with the front cover installed represents a Faraday
cage llike construction. This premises that all signal cables are connected to
the cable earthing bar as instructed. Conductive metal sheets all around the
subrack protect the FOX615 from ESD and electromagnetic fields.
The 19-inch mounting flanges of the subrack are conductive and provides a
conductive contact to the rack if the rails of the rack provide a conductive
surface. The subrack provides terminals for the system earthing.
Risk of operating trouble!
Attention to EMC properties!
In order to preserve the specified EMC characteristics of the FOX615 it is
essential to adhere to the following rules:
→ Connect the subrack properly to the system ground.
→ Use (shielded) signal cables that are approved by ABB only.
→ Connect the shields of the signal cables to the earthing bar of the sub-
rack.
→ Do not modify the ferrite filters provided with the cables.
→ Cover the subrack with its front cover.
Please note:
It is essential to place the ferrite toroid which is close to the unit connector
between the earthing bar of the subrack and the connector of the unit.
When in operation, the FOX615 is protected against ESD in accordance with
IEC/EN 61000-4-2 and in accordance with the specified EMC properties,
provided that
• all parts have been installed as instructed in the technical customer docu-
mentation,
• all the equipment is properly grounded,
• the front cover is installed on the FOX615 subrack,
• ABB approved cables are used.
ABB gives no warranty for cables manufactured by third party and will not
accept liability for EMC/ESD compliance if the FOX615 is operated with
cables that are not approved by ABB.
1KHW002463 FOX61x Lightning
FOX615

Installation