SIEMENS
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Siemens NC 62 · 2016
5
SINAMICS S120 drive system
Booksize format – Motor Modules
Series motor reactors
■
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 con-
nected 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 (212 °F). 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 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
,
therm. perm.
A
25
120
Continuous frequency,
therm. perm.
Hz
1400
1400
Pulse frequency, max.
kHz
8
8
Relative voltage drop
at the series motor reactor
At
I
thmax
and
V
rated
%
23
38
Ambient temperature
°C (°F)
40 (104)
40 (104)
Connection to
Motor Module/motor
Flat-type terminal
Flat-type terminal
PE connection
M6 screw
M8 screw
Degree of protection
IP00
IP00
Width
mm (in)
225 (8.86)
410 (16.14)
Height
mm (in)
210 (8.27)
385 (15.16)
Depth
mm (in)
115 (4.53)
174 (6.85)
Net weight
kg (lb)
16 (35.3)
68 (150)
Certificate of suitability
cURus
cURus
© Siemens AG 2016