Siemens 6SR41 series - Figure 2-4 Power Drive System

Overview
2.7 CE Marking and Directives for Perfect Harmony ™ Products
Product User Manual
30 Operating Instructions, Version AE 12/2009, A5E01454341C
CE Marking on Power Drive Systems
The concept of a Power Drive System [PDS] is used to describe an electric motor drive
system within an overall installation. The terminology is used throughout IEC and EN
standards relating to electrical variable speed drives to describe a combination of
components, including a power converter and motor. IEC series 61800 covers "Adjustable
Speed Electrical Power Drive Systems".
Siemens Industry, Inc. IDT LDA Perfect Harmony™ designs always include the Basic Drive
Module [BDM] consisting of a Perfect Harmony™ transformer, converter/inverter [power cell]
section, and control section. Depending on the Siemens Industry, Inc. IDT LDA scope of
supply, the Perfect Harmony™ Complete Drive Module [CDM] may include optional
components such as a motor excitation unit, output line filter, output line reactor, or earthing
switches. The Siemens Industry, Inc. IDT LDA scope of supply may include a motor.
The components of the machinery, including gear boxes and the driven equipment is the end
user’s responsibility and outside the scope of Siemens Industry, Inc. IDT LDA’s responsibility
from a Machinery Directive standpoint.
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BDM Basic drive module consisting of power input, control, & power output sections
CDM Complete drive module consisting of BDM and auxiliary sections, including devices such as
incoming switches, input and output transformers and filters, etc. but excluding the motor,
cables and motor-coupled sensors
PDS Power drive system consisting of CDM, motor and sensors, excluding the driven equipment
and sensors
Figure 2-4 Power Drive System