15.10 External Brake Resistor
15.10.1 Braking Ratio
Brake resistors with different power ratings are available to dissipate braking en-
ergy when the frequency converter is in generator mode.
The tables below list the optimal combination of frequency converter, brake re-
sistor and the number of components required to operate one frequency con-
verter with respect to a given moderating ratio OT.
OT (On Time percentage) Braking ratio
Tb Braking time
Tc Engineering cycle
time in application
Fig. 15-23: Braking ratio
Bosch Rexroth AG
Accessories
EFC x610 Series
308/389
DOK-RCON03-EFC-X610***-IT05-EN-P
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