Справочник Пользователя для Mitsubishi Electronics C6/C64

 
 

I - 105 

 

The EMC Directives largely regulate the following two items. 

 

• Emission .....  Capacity to prevent output of obstructive noise that adversely affects external devices. 
• Immunity .....  Capacity not to malfunction due to obstructive noise from external source. 

 
 

The details of each level are classified below in Table 1. 
It is assumed that the Standards and test details required for a machine tool are the same as these. 

 

Radiated noise 

Restriction of electromagnetic noise radiated 
through the air 

Emission 

Conductive noise 

Restriction of electromagnetic noise 
discharged from power supply line 

EN50081-2 
EN61800-3 
(Industrial 
environment) 

EN55011 
(CLASS:A) 

Static electricity 
electrical discharge 

Example)  

Regulation of withstand level of static 
electricity accumulated in human body 

IEC61000-4-2 

Radiation immunity 

Simulation of immunity from digital wireless 
telephones 

IEC61000-4-3 

Burst immunity 

Example)  

Regulation of withstand level of noise from 
relay or live wire being inserted or removed

IEC61000-4-4 

Conductive 
immunity 

Example)  

Regulation of withstand level of noise 
flowed from power supply wires, etc. 

IEC61000-4-6 

Power supply 
frequency magnetic 
field 

Example)  

Regulation of electromagnetic noise of 
50/60Hz power supply frequency 

IEC61000-4-8 

Power supply dip 
(fluctuation) 

Example)  

Regulation of power voltage drop 
withstand level 

IEC61000-4-11

Immunity 

Surge 

Example)  

Regulation of withstand level of noise 
caused by lightning 

EN50082-2 
EN61800-3 
(Industrial 
environment) 

IEC61000-4-5