REVCON SVCD(S), Руководство по эксплуатации

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Electricial Installation
Operating instructions SVCD(S) 63
123456278 - 419A58
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Elektrotechnische Anlagen GmbH
1
4.6 Installation of a power feedback unit in a CE-typical drive system
General
• The user is responsible for the compliance of his application with the EC directives .
- If you observe the following measure you can be sure that the drive system will not cause any
power-feed/feedback-unit-caused EMC problems, i.e. comply with the EMC
Directive when running the machine.
- If devices which do not comply with the CE requirement concerning noise immunity EN
61000-6-2 are operated close to the power feed/feedback unit, these devices may be interfered
electromagnetically by the power feed/feedback units.
Assembly
• Connect the power feed/feedback unit and the RFI-filter to the grounded mounting plate with
a wire of large cross section as possible:
– Mounting plates with conductive surfaces (zinc-coated or stainless steel) allow permanent
contact.
– Varnished boards should not be used for installation in accordance with EMC.
• If you use several mounting plates:
– Connect as much surface of the mounting plates as possible (e.g. with copper bands)
• Ensure the separation of power and control cables.
• Cable guides as close as possible to the reference potential. Unguided cables have the same ef-
fect as aerials.
Filters
• Use RFI filters which are assigned to the power feed/feedback unit.
RFI filters reduce impermissible high frequency interference to a permissible value.
Screening • Metallic cable glands ensure a big-surface connection between screen and housing
• If the screened wire are interrupted at relays or terminals:
- Connect the screens of the wires with a big surface to the mounting plate.
• If the mains wires between RFI-filter and power feed/feedback unit are longer than 300mm:
- Use screened mains wires
- Connect the screen direct at the controller / power feed/feedback unit and at the RFI-filter to
the mounting plate.
•
Screen the control wires:
- Connect the screens on the shortest possible way to their terminals.
Earthing
• All metallic conduction components (power feed/feedback unit, controller,
RFI-filter) have to be connected to one common earthing point (PE-bus bar).
• Observe the in the safety guidelines defined minimum cross sections:
- For EMC not the cross section, but the surface of a wire and the contact to the mounting plate
is important for the function.