Functions
8.15 Brake functions
Control Units CU240S
8-92 Operating Instructions, 11/2006, A5E00766042B AA
8.15.3 Regenerative braking (only with PM250)
Data
P0307, P0310
P1082, P1531
Parameter range:
r1537
Warnings: A0502
Faults: F0002, F0028
Function chart number: -
Description
For certain drive applications, the motor can operate as a generator in specific operating
states. Typical examples of these types of applications include:
● Cranes
● Traversing drives
● Conveyor belts where the material is being transported downwards
For regenerative motor operation, the motor energy is fed back into the mains supply via the
inverter and the mains-commutated rectifier of the inverter. The advantages of regenerative
braking include:
● The kinetic energy is not converted into heat in the motor
● The kinetic energy does not have to be converted into heat in an external resistor
● It has a significantly higher dynamic response and can be used in all operating states (not
only for an OFF command)
● It allows precise braking along a down ramp
● Continuous regenerative operation is possible - e.g. for cranes
● Only a low level of harmonics are injected back into the mains supply for regenerative
braking
Note
If regenerative feedback into the line supply is required at the rated frequency the
maximum frequency (p1082) must be greater than the rated motor frequency (p0310).
Caution
If the power fed back into the mains supply exceeds the rated power of the inverter, the
inverter will trip with F0028.
To Next Page
Loading...
Need help?
General
