SIEMENS
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Siemens NC 82 · 2017
SINAMICS S120 drive system
SINAMICS S120 in booksize format
Motor Modules
> Series motor reactors
4
■
Overview
Series motor reactor
A series reactor in the form of a three-limb iron-cored reactor
may be required in the case of special motors with low leakage
inductance (for which the controller settings are insufficient).
Motors with a low leakage inductance are, from experience,
motors that can achieve high stator frequencies > 300 Hz or
motors with a high rated current > 85 A.
The series motor reactors are designed for a pulse frequency of
4 kHz or 8 kHz output from the Motor Module. Higher pulse
frequencies are not permissible.
■
Overview
(continued)
The series motor reactor must be installed as close as possible
to the Motor Module
The voltage drop across a series reactor depends on the motor
current and the motor frequency. If an unregulated infeed is
used, the maximum rated motor voltage depends on the
connected line supply voltage. If these guide values are
observed, lower reductions in power in the upper speed range
of the motor can be achieved.
The surface temperature of the series motor reactor can reach
up to 100 °C. This additional heat source must be taken into
account in the system.
The notes in the Configuration Manual for the motors used must
be observed.
■
Selection and ordering data
■
Technical specifications
Suitable for
Motor Module
in booksize format
Internal air cooling
External air cooling
Series motor reactor
Rated
current
Rated
induc-
tance
Type
A
mH
Article No.
6SL3120-...
6SL3121-...
22.5
0.3
4EU2552-0EF00-4BA0
6SL3120-...
6SL3121-...
108
0.1
4EU3951-0AR00-4B
Article No.
4EU2552-0EF00-4BA0
4EU3951-0AR00-4B
Product brand name
SINAMICS
SINAMICS
Product designation
Series motor reactor
Series motor reactor
Input voltage 380 … 480 V 3 AC (DC link voltage 510 ... 720 V DC)
Rated current
A
22.5
108
Rated inductance
mH
0.3
0.1
Power loss
W
146
454
Continuous current
I
thmax
thermally permissible
A
25
120
Continuous frequency
thermally permissible
Hz
1400
1400
Pulse frequency maximum
kHz
8
8
Relative voltage drop
at the series motor reactor
At
I
thmax
and
U
rated
%
23
38
Ambient temperature
°C
40
40
Connection to
Motor Module/motor
Flat-type terminal
Flat-type terminal
PE connection
M6 screw
M8 screw
Degree of protection
IP00
IP00
Width
mm
225
410
Height
mm
210
385
Depth
mm
115
174
Net weight
kg
16
68
Certificate of suitability
cURus
cURus
© Siemens AG 2016