Emc Countermeasure Parts; Shield Clamp Fitting; Ferrite Core - Mitsubishi Electric MDS-EX-CV Series Specifications And Instruction Manual

MDS-EX-CV/CVH Series Specifications and Instruction Manual
14 Appx.3: EMC Installation Guidelines

14.6 EMC Countermeasure Parts

14.6 EMC Countermeasure Parts

14.6.1 Shield Clamp Fitting

The effect can be enhanced by connecting the cable directly to the earthing plate. Install an earthing plate near each panel's
outlet (within 10 cm), and press the cable against the earthing plate with the clamp fitting. If the cables are thin, several can be
bundled and clamped together. Securely earth the earthing plate with the frame ground. Install directly on the cabinet or
connect with an earthing wire.
Clamp fitting
(Fitting A, B)
View of clamp section
Ground Plate #D
Ground Plate #E
Clamp fitting A
Clamp fitting B

14.6.2 Ferrite Core

Noise can be suppressed by installing a ferrite core to the cable if the power cable and encoder cable, which are led from
outside of the control panel, are the noise sources.
Specify the frequency of radiated noise and select the ferrite with high impedance corresponding to the frequency.
By wrapping the cable around the ferrite core according to the cable diameter as shown in the example, the impedance rises,
obtaining a better effect.
< Example of use >
Lead through one time
(one turn)
IB-1501700-A
・Outline drawing
Peel the cable sheath at the
clamp section.
Cable
Earthing plate
Cable
Shield sheath
A B
100 86
70 56
L1 (maximum dimension when it is open)
25
12
Lead through two times
(two turns)
The clearance between the ferrite core and cable must be
as narrow as possible when winding a cable.
Earthing plate
17.5
Φ
2- 5 hole
Installation hole
Note 1
6 22
M4 screw
35
(Note 1) Screw hole for wiring to earthing plate in cabinet.
(Note 2) The earthing plate thickness is 1.6mm.
C Enclosed fittings
30 Clamp fitting A x 2
- Clamp fitting B x 1
L2 (reference dimension)
(77)
(54)
Lead through three times
(three turns)
84
Clamp fitting
L1
L2
[Unit: mm]