2 Engineering
2.1 Introduction
28 DC1-S…20…, DC1-S…OE1 Variable Frequency Drives 05/21 MN040058EN www.eaton.com
An example for a magnet system
a Electrical supply system
(mains connection, grounding system
configuration, mains voltage, frequency, voltage
balance, THD, compensation systems)
b Overall system – consisting of motor and
load systems
c PDS = Power drive system
d Safety and switching
(disconnecting devices, fuses, cable cross-
sectional areas, residual current circuit-breakers,
mains contactors)
e CDM = Complete drive module:
Variable frequency drive with auxiliary equipment
(mains and motor chokes, radio interference
suppression filter, brake resistor, sine filter)
BDM = Basic drive module:
DC1 variable frequency drive
f Motor and sensor (temperature, motor speed)
g Load system:
Driven system equipment (process, speed, torque)
Figure 10: Magnet system example (overall system as its own system or as part of a larger system)
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