ABBDCS800 Quick guide DCS800 Drives (20 A to 5200 A)

a Power Drive System

The paragraphs below describe selection of 

the electrical components in conformity with 

the EMC Guideline.

The aim of the EMC Guideline is, as the name 

implies, to achieve electromagnetic compatibility with other products and systems. The 

guideline ensures that the emissions from 

the product concerned are so low that they 

do not impair another product‘s interference 

immunity. 

In the context of the EMC Guideline, two 

aspects must be borne in mind:

• the product‘s interference immunity

• the product‘s actual emissions

The EMC Guideline expects EMC to be taken 

into account when a product is being developed; 

however, EMC cannot be designed in, it can only 

be quantitatively measured.

Note on EMC conformity

The conformity procedure is the responsibility of 

both the power converter‘s supplier and the manufacturer of the machine or system concerned, in 

proportion to their share in expanding the electrical 

equipment involved.

For compliance with the protection objectives 

of the German EMC Act (EMVG) in systems and 

machines, the following EMC standards must 

be satisfied:

Product Standard EN 61800-3

EMC standard for drive systems (PowerDriveSystem), interference immunity and emissions 

in residential areas, enterprise zones with light 

industry and in industrial facilities.

This standard must be complied with in the EU 

for satisfying the EMC requirements for systems 

and machines!

Classification

The following overview utilises the 

terminology and indicates the action required in accordance with 

Product Standard 

EN 61800-3

For the DCS800 series, the limit 

values for emitted interference 

are complied with, provided the 

measure indicated is carried 

out. PDS of category C2 (formerly restricted distribution in 

first environment) is intended to 

be installed and commissioned 

only by a professional (person 

or organization with necessary 

skills in installing and/or commissioning PDS including their 

EMC aspects).

For power converters without 

additional components, the following warning applies:

This is a product of category C2

under IEC 61800-3:2004. In a 

domestic/residential environment 

this product may cause radio 

interference in which case supplementary mitigation measures 

my be required.

The field supply is not depicted 

in this overview diagram. For the 

field current cables, the same 

rules apply as for the armaturecircuit cables.

M M M M

emv_clssif_b.dsf

Converter

transformer

Case-referenced EMC analysis

alternative

Converter 

transformer 

with earthed

 iron core 

(and earthed 

screen where 

appropriate)

alternative

I > 400 A 

and/or 

U > 500 V

Operation with separate power converter transformer. If there 

are other loads at the same secondary winding, these must be 

able to cope with the commutation gaps caused by the power 

converter. In some cases, commutating reactors will be 

required.

To other loads, e.g. drive systems

Converter Converter

Line reactor

Medium-voltage network

Industrial 

zone

For emitted interference, the following apply:

EN 61000-6-3 Specialised basic standard for emissions in light industry

can be satisfied with special features (mains filters, screened 

power cables) in the lower rating range *(EN 50081-1).

EN 61000-6-4 Specialised basic standard for emissions in industry 

*(EN 50081-2)

For interference immunity, the following apply:

EN 61000-6-1 Specialised basic standard for interference immunity in 

residential areas *(EN 50082-1) 

EN 61000-6-2 Specialised basic standard for interference immunity in industry. If this standard is satisfied, then the EN 61000-6-1 

standard is automatically satisfied as well *(EN 50082-2).

* The generic standards are given in brackets

START, STOP and E-STOP control

The relay logic can be split into three parts:

a: Generation of the ON/OFF and START/STOP command:

The commands represented by K20 and K21 (latching interface relay) can be e.g. generated by a PLC and transferred to 

the terminals of the converter either by relays, using galvanic 

isolation or directly via 24V signals. 

These commands can be as well transferred via serial 

communication. Even a mixed solution can be realized by 

selecting different possibilities for the one or the other signal 

(see parameter group 11).

b: Generation of control and monitoring signals: 

The main contactor K1 for the armature circuit is controlled 

by a dry contact (DO 8) located on the SDCS-PIN-4. Status 

of fans and fans klixon can be monitored by means of fan 

ack signals: MotFanAck (10.06) and ConvFanAck (10.20). 

c: OFF2, OFF3 Stop function: 

Beside ON/OFF and START/STOP, the drive is equipped 

with two additional stop functions, OFF2 and OFF3, according to Profibus standard. OFF3 is a scalable stop function 

(rampstop, max torque stop, dynamic braking …) to perform 

stop category 1. This function should be connected to the