Engineering
18 M-Max Series Adjustable Frequency Drive    MN04020003E—October 2013    www.eaton.com
Engineering
Introduction
This chapter describes the most important features in the energy circuit of a drive system 
(PDS = Power Drive System) that you should take into consideration in your project planning.
Drive System (PDS)
햴
햳
햲
L1
L2
L3
PE
햶
햵
햸
햻
햺
햹
햷
RCD
L1 L2/N
PE U V W
L3 PE
R+ R–
M
3
PES
PES
#
I > I > I >
햽
~
Item
Number Description
1 Network configuration, input voltage, input frequency, 
interaction with p.f. correction systems
2 Breakers, fuses, and cable cross-sections
3 Protection of persons and domestic animals with 
residual-current protective devices
4 Input contactor
5 Input line reactor, radio interference suppression filter, 
input filters
6 Frequency inverter: mounting, installation; power connection; 
EMC measures; circuit examples
7 Motor reactor, dv/dt filter, sine-wave filter
8 Motor protection; thermistor
9 Cable lengths, motor cables, shielding (EMC)
10 Motor and application, parallel operation of multiple motors 
on a frequency inverter, bypass circuit; DC braking
11 Braking resistance; dynamic braking