Figure 2-4 Power Drive System - Siemens 6SR41 series Product User Manual

Overview
2.7 CE Marking and Directives for Perfect Harmony ™ Products
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.
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
PDS
Figure 2-4
30
incoming switches, input and output transformers and filters, etc. but excluding the motor,
cables and motor-coupled sensors
Power drive system consisting of CDM, motor and sensors, excluding the driven equipment
and sensors
Power Drive System
Operating Instructions, Version AE 12/2009, A5E01454341C
Product User Manual