Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual page 189

Braking with regenerative feedback into the line supply
Advantages:
Constant braking torque; the regenerative

power is not converted into heat, but is regenerated into
the line supply; can be used in all applications;
continuous regenerative operation is possible - e.g.
when lowering a crane load
Disadvantage:
Does not function when power fails

Braking method depending on the application
Table 7- 24
Application examples
Pumps, fans, mixers,
compressors, extruders
Grinding machines, conveyor
belts
Centrifuges, vertical conveyors,
hoisting gear, cranes, winders
Table 7- 25
DC braking
Compound braking
Dynamic braking
Braking with regenerative feedback into the
line supply
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
What braking method is suitable for what application?
Electrical braking methods
Not required
DC braking, compound braking
Dynamic braking
Braking with regenerative feedback
into the line supply
What Power Module do you require for a specific braking method?
The inverter feeds the regenerative power back into the
mains
SINAMICS G120 Power Module
PM240
X
X
X
---
Functions
7.9 Technological functions
Power Modules that can be
used
PM240, PM250, PM260
PM240
PM240
PM250, PM260
PM250 PM260
X X
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X X
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