SIEMENS
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Siemens D 21.4 · 2017
SINAMICS S120 drive system
Chassis format
DC link components for chassis format
> Braking Modules
7
■
Overview
A Braking Module and the matching external braking resistor are
required to bring drives to a controlled standstill in the event of
a power failure (e.g. with an EMERGENCY STOP) or to limit the
DC link voltage for brief periods of regenerative operation, e.g.
if the Line Module is not capable of energy recovery.
The Braking Module includes the power electronics and the
associated control circuit. During operation, the DC link energy
is converted to heat loss in an external braking resistor.
The Braking Module works independently of the converter
control.
Several Braking Modules can be operated in parallel, but a
separate braking resistor must be connected to each Braking
Module.
Braking Modules are designed to be integrated into air-cooled
Motor Modules, Line Modules or Power Modules and are cooled
by the fans on these modules. The supply voltage for the elec-
tronics is taken from the DC link. The Braking Modules are con-
nected to the DC link by means of the busbar sets included in
the scope of supply or flexible cables and, in the case of Basic
Line Modules of frame size GB or GD, using a separate cable
harness set.
The activation threshold of the Braking Module can be adjusted
by means of a DIP switch. The braking power values specified
in the technical specifications apply to the upper activation
threshold.
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Design
The Braking Modules have the following interfaces as standard:
•
1 DC link connection
•
1 braking resistor connection
•
1 digital input (block Braking Module / acknowledge error)
•
1 digital output (Braking Module inhibited)
•
1 DIP switch for adjusting the activation threshold
Information about Braking Module activation thresholds and
other notes are included in the SINAMICS Low Voltage
Engineering Manual.
■
Selection and ordering data
Rated power
P
DB
Peak power
P
15
Frame size
Braking Module
kW
kW
Article No.
Line voltage 380 ... 480 V 3 AC
DC link voltage 510 ... 720 V DC
25
125
FX/FB
6SL3300-1AE31-3AA0
50
250
GX/GB/GD
6SL3300-1AE32-5AA0
50
250
HX/JX
6SL3300-1AE32-5BA0
Line voltage 500 ... 600 V 3 AC
DC link voltage 675 ... 900 V DC
25
125
FX/FB
6SL3300-1AF31-3AA0
50
250
GX/GB/GD
6SL3300-1AF32-5AA0
50
250
HX/JX
6SL3300-1AF32-5BA0
Line voltage 660 ... 690 V 3 AC
DC link voltage 890 ... 1035 V DC
25
125
FX/FB
6SL3300-1AH31-3AA0
50
250
GX/GB/GD
6SL3300-1AH32-5AA0
50
250
HX/JX
6SL3300-1AH32-5BA0
Description
Article No.
Accessories
Cable harness set
for mounting a Braking Module of
frame size GX into a Basic Line Module
of frame size GB or GD
6SL3366-2NG00-0AA0
© Siemens AG 2017