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DOK-INDRV*-FCS01******-IT01-EN-P
Rexroth IndraDrive Fc Drive Controllers Frequency Converters FCS01
7.3
Type Code FLR01 Braking Resistor
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Fig.7-3:
Type Code FLR01
When a three-phase a.c. motor is braked (when its frequency is reduced),
electrical energy is regenerated to the frequency converter. To prevent over‐
voltage cut-off of the frequency converter, an external braking resistor can be
used. In this process, the integrated power transistor (brake chopper) dis‐
charges the DC bus voltage (switching limit at approx. DC420V or DC720V,
depending on type of FCS01) to the braking resistor. Here, the recovered en‐
ergy is converted to heat.
Bosch Rexroth AG
59/69
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