REXROTH Fv Series, Instruction Manual

Page: 169 / 222

● After the adjustment of the resistance of brake resistor, the power of
brake resistor should be also adjusted appropriately. The power can be
calculated by formula Pmax=Ud2 / Rb. According to the actual working
condition, the braking rate ED% can be selected to reduce the power of
brake resistor reasonably for intermittent braking load. The power of
brake resistor can be calculated by formula PR=K * Pmax * ED%, in
which k is the derating coefficient of brake resistor. The selection of the
brake torque should be in general smaller than 150 % of the rated motor
torque, or consulting the technical support for more information.
Brake Resistor in Aluminum Housing
Fig.10-7: Brake resistor in aluminum housing
DOK-RCON02-FV*********IB01-EN-P
Rexroth Frequency Converter Fv Bosch Rexroth AG 167/219
Accessories