04/10 MN04020001Z-EN
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2 Engineering
Introduction
This chapter describes the most important features in the energy
circuit of a drive system (PDS = Power Drive System), which you
should take into consideration in your project planning.
Figure 9: Drive system (PDS)
a Network configuration, mains voltage, mains frequency, interaction with p.f. correction systems
b Fuses and cable cross-sections, line protection
c Protection of persons and domestic animals with residual-current protective devices
d Mains contactor
e Mains reactor, radio interference suppression filter, mains filters
f Frequency inverter: mounting, installation; power connection; EMC measures; circuit examples
g Motor reactor, du/dt filter, sine-wave filter
h Motor protection; thermistor
i Cable lengths, motor cables, shielding (EMC)
j Motor and application, parallel operation of multiple motors on a frequency inverter, bypass circuit; DC braking
k Braking resistance; dynamic braking
c
b
a
L1
L2
L3
PE
e
d
g
j
i
h
f
RCD
L1 L2/N
PE
U
VW
L3 PE
R+ R-
M
3
i
˜
PES
PES
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