M800VW/M80VW Series Connection and Setup Manual
44 Appendix 4: EMC Installation Guidelines
44.4 Panel Structure
44.4.2 Measures for Door
Use metal for all members configuring the panel.
When joining the door, use a gasket to lower the impedance of the contacting sections, or use a structure with a large con-
tact area as shown below.
The EMI gasket or conductive packing must contact the metal surface uniformly and at the correct position.
(a)
Use of gasket
Door
EMI gasket
Note
(1) When not using a gasket, ground the control panel grounding with a grounding wire to lower the door's impedance.
(2) Using screws to fix the plates that have been painted (attachment of packing) is the same as an insulated state. Peel the
paint and fix the screws.
44.4.3 Measures for Power Supply
Shield the power supply section and insert a filter to prevent the noise from flowing in or out.
Selection of the noise filter capacity will differ according to the drive unit and devices being used.
Device
Radiated
noise
Conductive
noise
Noise
filter
Note
(1) The conductive noise can be suppressed by inserting a noise filter, but the radiated noise will flow out.
(2) The conductive and radiated noise can both be suppressed by adding a partition plate to the noise filter.
IB-1501612-C
(b)
Large contact area
Door
Control
panel
Cross-section drawing
Flow out
AC input
NF
Conductive
noise
Control panel
Contact area
Device
Radiated noise
Partition
AC input
NF
plate
Noise
filter
638