Specifications
SINAMICS G150
Drive converter cabinet units
75 kW to 1500 kW
3/29
Siemens D 11 · 2008
3
Options (continued)
L61, L62
B raking u nits
It may be necessary to use braking units for drives that allow re-
generative braking.
The braking unit comprises two components: a B raking Module
fitted in the converter cabinet and a braking resistor, which
must be provided externally (IP20 degree of protection). The
braking unit functions as an autonomous unit, and does not re-
quire an external power supply. During the braking process, the
kinetic energy is converted into heat in the externally installed
braking resistor. A max. cable length of 100 m is permissible be-
tween the B raking Module and the braking resistor. It is therefore
possible to release the heat outside the converter room.
The braking resistor is connected to terminal block – X5 on the
drive converter cabinet unit:
Characteristic curves
Load diagram for B raking Modules and braking resistors
For information about possible braking unit load cycles and
more detailed planning instructions, please refer to the Engi-
neering Manual SINAMICS Low Voltage. The engineering
manual is stored as a PDF file on the CD-ROM included with the
catalog.
The following braking units are available for the SINAMICS G150
converters and must be selected according to the converter
rating:
A second 50 kW braking unit can be fitted in converters with par-
allel-connected power units in order to increase the braking
power. In this case, one B raking Module is assigned to each
braking resistor. You can order a second braking unit by select-
ing option L62 twice.
If greater braking powers are required in addition to the braking
units listed here, then braking units may be connected in parallel
circuit for greater converter outputs (on request).
L83
Therm istor m otor p rotection u nit (alarm )
Thermistor motor protection unit (with PTB approval) for PTC
thermistors type A for alarm. The power supply for the thermistor
motor protection unit and the evaluation is provided within the
converter.
L84
Therm istor m otor p rotection u nit (shu tdown)
Thermistor motor protection unit (with PTB approval) for PTC
thermistors type A for shutdown. The power supply for the ther-
mistor motor protection unit is supplied and the evaluation is pro-
vided within the converter.
Terminal
-X5:
Meaning
1 Connection of braking resistor
2 Connection of braking resistor
15
P
20
P
40
P
DB
P
DB
P
15
P
20
P
40
P
t
=
=
5
x
=
Power
which
is
permissible
every
90
s
for
15
s
=
4
x
=
Power
which
is
permissible
every
90
s
for
20
s
=
2
x
=
Power
which
is
permissible
every
90
s
for
40
s
1.00
10
20
30
40
50
60
70
80
90
100
0.75
0.50
0.25
s
1.50
1.25
DB
P
/
P
DB
P
15
DB
P
DB
P
Rated pow er
G_D211_EN_00013a
Option SIN AMICS
G150
converter
cabinet
units
Braking Module Braking
resis-
tance
R
B
Rated
power
(continu-
ous
braking
power)
P
DB
Power
P
40
Power
P
20
Peak
power
P
15
kW kW kW kW kW ohm
380 ... 480 V 3 AC
L61 110 ... 132 25 50 100 125 4.4
$7.5 %
L62 160 ... 900 50 100 200 250 2.2
$7.5 %
500 ... 600 V 3 AC
L62 110 ... 1000 50 100 200 250 3.4
$7.5 %
660 ... 690 V 3 AC
L61 75 ... 132 25 50 100 125 9.8
$7.5 %
L62 160 ... 1500 50 100 200 250 4.9
$7.5 %
P ow er
P
DB
Rated power (continuous braking power)
P
40
= 2 x P
DB
40 s power referred to a braking interval of 90 s
P
20
= 4 x P
DB
20 s power referred to a braking interval of 90 s
P
15
= 5 x P
DB
15 s power referred to a braking interval of 90 s
Terminal
-F 127:
Meaning
T1 Connection of sensor loop
T2 Connection of sensor loop
Terminal
-F 125:
Meaning
T1 Connection of sensor loop
T2 Connection of sensor loop
© Siemens AG 2008