SIEMENS
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Siemens D 11 · 2015
■
Options
(continued)
4
SINAMICS G150
Drive converter cabinet units
75 kW to 2700 kW
L61, L62
Braking units
Braking units may be required for drives in which motors might
operate in generator mode, but have no facility for feeding en-
ergy back into the supply system.
The braking unit comprises two components:
•
A Braking Module that is installed in the converter cabinet
•
A braking resistor to be mounted externally (IP20 degree of
protection).
The braking unit functions as an autonomous unit, and does not
require an external power supply. The braking energy is con-
verted into heat in the braking resistor that must be mounted ex-
ternally.
A max. cable length of 100 m is permissible between the Braking
Module and the braking resistor. This allows the braking resistor
to be mounted externally so that heat losses can be dissipated
outside the converter enclosure.
The braking resistor is connected to terminal block –X5 on the
converter cabinet unit:
Characteristic curves
Load diagram for Braking Modules and braking resistors
Information about possible duty cycles of the braking units and
other configuration notes are contained in the SINAMICS Low
Voltage Engineering Manual.
The following braking units are available for SINAMICS G150
converters – depending on the converter type:
P
DB
: Rated power (continuous braking power)
P
40
: 40 s power in relation to a braking interval of 90 s
P
20
: 20 s power in relation to a braking interval of 90 s
P
15
: 15 s power in relation to a braking interval of 90 s
A second 50 kW braking unit can be used in converters with
power units connected in parallel in order to increase the brak-
ing power. In this case, a Braking Module is assigned to each
braking resistor. You can order a second braking unit by select-
ing option
L62
twice.
If more braking power is required than provided by the braking
units listed here, then braking units may be connected in parallel
for higher converter outputs (on request).
For further information, please refer to the SINAMICS Low
Voltage Engineering Manual.
L76
Quick start (for option L01)
If
L01
(line harmonics filter) is in use, after the converter
has been switched off, as a result of the principle of operation,
a waiting period of at least 30 seconds must be allowed to
elapse before switching on again. With option
L76
, the wait time
is shortened to approx. 3 s.
L83
Thermistor motor protection device (alarm)
Thermistor motor protection device for PTC thermistors (PTC re-
sistors, type A) for alarm. The thermistor motor protection device
is supplied with power and evaluated internally in the converter.
Terminal
-X5:
Meaning
1
Braking resistor connection
2
Braking resistor connection
15
P
20
P
40
P
15
P
20
P
40
P
15
s
100
90
80
70
60
50
40
30
20
10
t
P
/
P
20
G_D011_EN_00328
= Rated power
DB
DB
DB
= 5 x
P
= Power which is permissible every 90 s for 15 s
= 4 x
P
= Power which is permissible every 90 s for 20 s
= 2 x
P
= Power which is permissible every 90 s for 40 s
DB
P
DB
1.25
1.50
0.25
0
0.50
0.75
1.00
P
Option
SINAMICS
G150 conver-
ter cabinet
units
Braking Module
Braking
resistor
R
B
Type rating
P
DB
P
40
P
20
P
15
kW
kW
kW
kW
kW
Ω
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 %
3500 ... 600 V 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 ... 2700
50
100
200
250
4.9 ±7.5 %
Terminal
-F127:
Meaning
T1
Sensor circuit connection
T2
Sensor circuit connection
© Siemens AG 2015