Braking With Regenerative Feedback To The Line - Siemens SINAMICS G120D Operating Instructions Manual

7.8.3.2

Braking with regenerative feedback to the line

The typical applications for braking with energy recovery (regenerative feedback into the line
supply) are as follows:
● Hoist drives
● Centrifuges
● Unwinders
For these applications, the motor must brake for longer periods of time.
The inverter can feed back up to 100% of its rated power into the line supply (referred to
"High Overload" base load, see section Performance ratings Power Module (Page 347)).
Setting the braking with regenerative feedback to the line
Parameter
Limiting the regenerative feedback for U/f control (p1300 < 20)
p0640
Limiting feedback with vector control (p1300 ≥ 20)
p1531
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Description
Motor series overload factor (factory setting: 0.00 A, default for basic commissioning)
It is only possible to limit the regenerative power with V/f control by limiting the motor
current.
If the current exceeds this value for longer than 10 s, the inverter shuts down the motor
with fault F07806.
Power limit, generating (factory setting: -0.01 kW)
The inverter calculates the parameter based on the basic commissioning or with p0340
= 5.
Advanced commissioning
7.8 Application-specific functions
243