Braking Module Booksize Compact; Description - Siemens SINAMICS S120 Manual

8.3

Braking Module Booksize Compact

8.3.1

Description

The Braking Module Booksize Compact is always used together with a braking resistor. It
has the following tasks:
● Controlled stop of the drives in the event of a power failure
(e.g. emergency retraction or EMERGENCY OFF Category 1).
● Limit the DC link voltage for brief periods of generator operation, for example, if the
regenerative feedback capability of the Line Module is deactivated or is not adequately
dimensioned.
The Braking Module includes the necessary power electronics and control. When the module
is in operation, the power which is fed back into the DC link is dissipated via an external
braking resistor.
The Braking Module can be operated on 200 V or 400 V line supply systems; the 4-pin DIP
switch on the top of the module is used to select which one applies in each case. The factory
setting is 400 V.
When spacers (6SL3462-1CC00-0AA0) are used, the Braking Module Booksize Compact
can be integrated into a drive line-up in booksize format with internal air cooling.
External braking resistors
Braking resistors with or without a thermostatic switch can be used with the Braking Module
Booksize Compact (List of braking resistors that can be connected (Page 504)). The DIP
switch sets the type of braking resistor being used in each case. The factory setting is
"braking resistor with a thermostatic switch".
The cable length between the Braking Module and the braking resistor is limited to 10 m.
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
DC link components
8.3 Braking Module Booksize Compact
499