Eurotherm 590A SERIES Product Manual Download

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When using the generic EMC standards, the 'Residential, commercial and light industry' emission limits (Class B) are
more stringent than the 'Industrial' (class A) limits, and so equipment which meets EN50081-1(1992) automatically
meets EN50081-2(1994). Similarly, the 'Industrial' immunity requirements are more stringent than the 'Residential,
commercial and light industry' requirements, and equipment which meets prEN50082-2(1992) automatically meets
EN50082-1(1992).

More and more Product Specific standards are being released with less onerous EMC requirements than the Generic
Standards. When the new EMC Drive Product Standard for Power Drive System (EN61800-3) becomes available (Q
3/4 1996), EMC filters will only be

mandatory

in ‘residential’ type EMC environments (if this is the most

appropriate standard to use for demonstrating conformance of the relevant apparatus). EMC competent bodies are
today using the draft EMC Drive Product Standard to demonstrate conformance using the technical construction file
route. The EMC Drive Product Standard as CEMEP is discussed in more detail in the Eurotherm Application manual
entitled ‘EMC Installation Guidelines for modules and systems’, part number HA388879, available from your local
Eurotherm Drives office.

It is important for the customer to identify what EMC standards are to be applied to the final machine/system and in
what EMC environment it will operate, so that any additional compliance costs can be minimised. It should be
remembered that when two or more EMC compliant components are combined to form the final machine/system, the
resulting machine/system may not be compliant. Emissions from combined components tend to be additive, whilst
the immunity remains constant.

FILTER SELECTION AND LINE CHOKE

590 drive modules can be

'CE'

marked (as in CEMEP validity field 1) when used with the specified specially

designed EMC filters to comply with the mains terminal limits of EN55011 Class B (or EN50081-1) as indicated
previously, and when installed in accordance with the

EMC installation instructions

in this Product Manual

(chapter 4). The Class A limit allows product to be used in ‘industrial ' EMC environments. Refer to

Consideration

of EMC environments

, in this chapter for more details. The specified EMC filters for the 590 drive modules are

summarised in table A and B in Chapter 4 EMC Installation guidelines. The fitment of the specified EMC filter and
line chokes is

mandatory

where

'CE'

marking is applied.

If the customer is treating the 590 drive module as a

component for supply to EMC competent professional

assemblers

(CEMEP validity field 2)and is taking the EMC responsibility, then the filters are optional and may

assist the customer in achieving EMC compliance. In this situation the customer may also achieve compliance by less
expensive more global measures depending on the limits to be achieved, such as the use of a combination of global
or local filtering and screening methods, natural mitigation through distance or use of distributed parasitic elements
of the existing installation.

FILTER INSTALLATION

The required EMC emission and immunity performance, and 'CE' marking of 590 drive modules can only be
achieved when the

EMC installation instructions

in Chapter 4 are adhered to.

SPECIFICATION OF ACHIEVABLE EMC EMISSION AND IMMUNITY

590 drive modules with the option to be

'CE'

marked meet the following EMC emission limits provided they are

installed with the specified EMC filters and line chokes for

'CE'

marking in accordance with the EMC installation

instructions.