Emc Measures; Basics Of The Emc Measures - Mitsubishi Electric FR-A701 Installation Manuallines

3. EMC measures

3. 1 Basics of the EMC measures

EMC (Electromagnetic compatibility) means both emissions and immunity as shown
below.
*EMC
(Electromagnetic
compatibility)
Note * EMC is a capability of a device or a system to operate as commanded without
receiving or giving influence of electromagnetic field and without performance loss or
fault when the device or the system starts the operation at the commanded position.
The measures described in this guideline are primarily intended to control emissions,
but they are
also effective in increasing immunity.
Various EMC measures exists, but main measures are the following. EMC measures
become effective by applying the following measures.
(1) Install equipment in a closed metal enclosure. (Keep the radiant interference
inside. )
(2) Use an EMC filter (Reduce conducted interference.)
(3) Ground (earth) securely (Avoid causing antenna effect.)
(4) Shield the power cable and the control cable. (Keep the radiant interference
inside.)
(5) Keep the equipment away from the interference source, or install the interference
source in a separate enclosure. (Keep the radiant interference inside.)
(6) Isolate the circuits.( Cut the conducted interference.)
(7) Change the inverter parameter settings. (Reduces generated interference and
disturbance effect)
EMC measures are explained in detail on the following pages.
Emissions (EMI)
(Electromagnetic
interference)
Immunity (EMS)
(Electromagnetic
susceptibility)
3 - 1
Radiated interference
Conducted interference
Electrostatic discharge immunity
Radio frequency electromagnetic field immunity
Electrical fast transient/burst immunity
·
·
etc.