Dc Braking - Siemens SINAMICS G120 Operating Instructions Manual
Frequency converter
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Functions
7.9 Application-specific functions
7.9.2.2
DC braking
DC braking is used for applications without regenerative feedback into the line supply, where
the motor can be more quickly braked by impressing a DC current than along a braking
ramp.
Typical applications for DC braking include:
● Centrifuges
● Saws
● Grinding machines
● Conveyor belts
Whether DC braking or ramp-down with an OFF1 command is more effective depends on
the motor properties.
Principle of operation
With DC braking, the inverter outputs an internal OFF2 command for the time that it takes to
demagnetize the motor - and then impresses the braking current for the duration of the DC
braking.
The following operating modes are available for DC braking.
190
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
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