Siemens 420 manual Classification of EMC performance, Class 1 General Industrial

7 Electro-magnetic compatibility (EMC) Issue 07/04

7.1.5Classification of EMC performance

Three General classes of EMC performance are available as detailed below:

Class 1: General Industrial

Compliance with the EMC Product Standard for Power Drive Systems EN 68100-3 for use in Second Environment (Industrial) and Restricted Distribution.

Table 7-2	Class 1 - General Industrial
EMC Phenomenon		Standard	Level
Emissions:
Radiated Emissions		EN 55011	Level A1
Conducted Emissions		EN 68100-3	Limits under consideration
Immunity:
Electrostatic Discharge		EN 61000-4-2	8 kV air discharge
Burst Interference		EN 61000-4-4	2 kV power cables, 1 kV control
Radio Frequency Electromagnetic Field		IEC 1000-4-3	26-1000 MHz, 10 V/m

Class 2: Filtered Industrial

This level of performance will allow the manufacturer/assembler to self-certify their apparatus for compliance with the EMC directive for the industrial environment as regards the EMC performance characteristics of the power drive system.

Performance limits are as specified in the Generic Industrial Emissions and Immunity standards EN 50081-2 and EN 50082-2.

Table 7-3	Class 2 - Filtered Industrial
EMC Phenomenon		Standard	Level
Emissions:
Radiated Emissions		EN 55011	Level A1
Conducted Emissions		EN 55011	Level A1
Immunity:
Supply Voltage Distortion		IEC 1000-2-4
		(1993)
Voltage Fluctuations, Dips, Unbalance,		IEC 1000-2-1
Frequency Variations
Magnetic Fields		EN 61000-4-8	50 Hz, 30 A/m
Electrostatic Discharge		EN 61000-4-2	8 kV air discharge
Burst Interference		EN 61000-4-4	2 kV power cables, 2 kV control
Radio Frequency Electromagnetic		ENV 50 140	80-1000 MHz, 10 V/m, 80% AM, power
Field, amplitude modulated			and signal lines
Radio-frequency Electromagnetic Field,		ENV 50 204	900 MHz, 10 V/m 50% duty cycle, 200 Hz
pulse modulated			repetition rate

MICROMASTER 420	Operating Instructions
170	6SE6400-5AA00-0BP0