SIEMENS
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Siemens NC 62 · 2016
5
SINAMICS S120 drive system
Chassis format – DC link components
Braking resistors
■
Overview
Excess energy in the DC link is dissipated via the braking
resistor.
The braking resistor is connected to a Braking Module. Position-
ing the braking resistor outside the control cabinet or switchgear
room enables the resulting thermal losses to be routed away.
This reduces the level of air conditioning required.
2 braking resistors with different rated and peak power values
are available for chassis format units.
The braking resistor is monitored on the basis of the duty factor.
A temperature switch (NC contact) is also fitted. This responds
when the maximum permissible temperature is exceeded and
can be evaluated by a controller.
■
Selection and ordering data
■
Characteristic curves
Load diagram for chassis format Braking Module and braking resistor
■
Technical specifications
Power
Suitable for
Braking Module
in chassis format
Braking resistor
P
DB
/
P
max
Article No.
DC link voltage 510 … 720 V DC
25 kW/125 kW
6SL3300-1AE31-3AA0
6SL3000-1BE31-3AA0
50 kW/250 kW
6SL3300-1AE32-5
.
A0
6SL3000-1BE32-5AA0
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
G_D211_EN_00013b
= 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
P
/
P
DB
1.25
1.50
0.25
0
0.50
0.75
1.00
P
DC link voltage
510 … 720 V DC
Braking resistor
6SL3000-1BE31-3AA0
6SL3000-1BE32-5AA0
Resistance
Ω
4.4
2.2
Rated power
P
DB
kW
25
50
Peak power
P
max
kW
125
250
Load duration
for peak power
s
15
15
Cycle duration
of braking duty cycle
s
90
90
Current, max.
A
189
378
Cable entry
Via M50 cable gland
Via M50 cable gland
Power connection
Via M10 stud
Via M10 stud
• Conductor cross-section, max.
mm
2
50
70
Degree of protection
IP20
IP20
Dimensions
• Width
mm (in)
740 (29.13)
810 (31.89)
• Height
mm (in)
605 (23.82)
1325 (52.17)
• Depth
mm (in)
485 (19.09)
485 (19.09)
Net weight
kg (lb)
50 (110)
120 (265)
Certificate of suitability
cURus
cURus
Suitable for
Braking Module in chassis format
Type
6SL3300-1AE31-3AA0
6SL3300-1AE32-5 . A0
© Siemens AG 2016