Measures For Door; Measures For Power Supply - Mitsubishi Electric C80 Series Connection And Set Up Manual

C80 Series Connection and Setup Manual
19 Appx.2: EMC Installation Guidelines

19.4.2 Measures for Door

(1) Use metal for all members configuring the panel.
(2) When joining the door, use a gasket to lower the impedance of the contacting sections, or use a structure with a
large contact area as shown below.
(3) 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.
(Note 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.

19.4.3 Measures for Power Supply

(1) 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.
Conductive
noise
(Note 1) The conductive noise can be suppressed by inserting a noise filter, but the radiated noise will flow out.
(Note 2) The conductive and radiated noise can both be suppressed by adding a partition plate to the noise filter.
IB-1501452-C
(b)
Control
panel
Device
Flow out
Radiated
noise
AC input
NF
Conductive
Noise
noise
filter
Large contact area
Control panel
Door
Contact area
Cross-section drawing
Device
Radiated noise
Partition
NF
plate
Noise
filter
250
AC input