Danfoss VLT 3006 Product Manual page 56

Instructions for
installation
Mechanical installation
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EMC installation
Filtering
Electrical interference from the cable
network - cable-borne as well as air-borne
- can be prevented by using the correct
filters. The filters or equivalent stated in
the product programme must be installed,
and when re-mounting, the filter
installation instructions are to be
observed.
®
VLT 3002-3052
All models have filters for integration into/
mounting on the appliance itself. Some
®
VLT 3002-3008, IP00/IP21 enclosure
®
VLT 3002-3008, IP00/IP21/IP54
enclosure with brake:
® ®
VLT 3002 - VLT 3008, IP00/IP21 enclo-
®
sure and VLT 3002-3008, IP00/IP21/IP54
enclosure with brake must always be in-
stalled against a conductive rear plate.
Install the metal cabinet of the VLT
frequency converter up against the rear
plate. The rear plate must be electrically
conductive and act as a common HF earth
reference for the VLT ® frequency con-
verter, the RFI/brake module and any
brake cables used. The VLT
converter and the RFI/brake module must
be installed with the lowest possible HF
impedance to the rear plate. This can best
be done through the fastening bolts for the
enclosure (see instructions for installation,
pp. 57-59, item A). Since the aluminium
enclosure of the appliances is anodised
and thus electrically insulating, toothed
(serrated) washers should be used to
penetrate the anodisation - or the ano-
dised surface has to be removed. Remem-
ber also to remove any varnish or paint
from the rear plate.
®
VLT 3002-3008, IP54 enclosure without
brake
®
VLT 3011-3052, IP20/IP54 enclosure:
Appliances can be installed on an electri-
cally conductive or a non-conductive rear
plate, since the RFI filter can be or is
integrated and the screen from control
cables, motor cable and brake cable (not
®
VLT 3002-3008) can be terminated in the
appliances (see instructions for installation,
pp. 57-59, items B, C and D).
If an electrically conductive rear plate is
used, the VLT ® frequency converter must
be installed with the lowest possible HF
impedance to the rear plate, and the
instructions for installation, pp. 57-59,
items A, B, C, D and E, must be complied
with.
If a non-conductive rear plate is used (i.e.
in the case of installation directly against a
brick wall), use the instructions for installa-
tion, pp. 57-59, items B, C and D.
®
MG.30.A7.02 - VLT is a registered Danfoss trademark
models offer the feature of ordering the
appliance with the filter already integrated.
See the product range. In the case of
subsequent installation, the instructions for
installation of the filter must be complied
with (see also the instructions for installa-
tion, item F).
®
VLT 3060-3250
The filter is supplied as an IP54 option or
an IP20 option that cannot be integrated in
the appliance itself, but can be bolted
directly on the side.
®
VLT 3032-3052 200V and
®
VLT 3060-3250 380-500V, IP20 RFI option
See further examples of installation on
page 59.
- The filter should be installed on the
same panel as the frequency converter.
The panel must be electrically conduc-
tive. Both the frequency converter and
the filter must have a good high-
®
frequency connection to the panel.
- The filter should be connected as close
as possible to the frequency converter
input, the maximum distance being 1
metre.
®
frequency
- The mains filter should be earthed at
both ends.
- Before mounting the filter on the panel,
remove any surface treatment, etc.
NB! The filter must be earthed before
connection to mains.
VLT ® 3032-3052 200V and
®
VLT 3060-3250 380-500V, IP54 RFI
module
See further examples of installation on
page 59.
1. Remove the wire plate and the Philips
screw in the right-hand side of the
®
VLT
wire plate for later use).
2. Place the IP54 RFI option in the right-
hand side of the VLT
3. Before fastening the RFI option to the
VLT ®
gasket and mount it around the cable
inlet to maintain the IP54 enclosure
grade.
4. Fasten and earth the RFI module to the
VLT ®
washers. With the RFI module door
open, mount the two screws and
fasten the module.
5. Use the screws from item 1) to fasten
and seal off the wire inlet between the
RFI option and the VLT
6. Using the wire net supplied with the
RFI option, connect the RFI filter to the
VLT ®
7. Connect the AC mains input and earth
to the terminals placed at the top of the
RFI filter.
3000 (save the screws for the
® 3000.
3000, place the accompanying
3000 with 2 screws plus screw
®
3000.
3000 AC mains input and earth.
55