EN / ACS800-31/U31 Hardware Manual - Simark Controls

126Brake circuit commissioningFor Standard Application Program:• Switch off the overvoltage control of the drive (parameter 20.05).• Frame size R6: Check the setting of parameter 21.09. If stop by coasting isrequired, select OFF2 STOP.For the use of the brake resistor overload protection (parameters 27.02...27.05),consult an ABB representative.WARNING! If the drive is equipped with a brake chopper but the chopper is notenabled by parameter setting, the brake resistor must be disconnected because theprotection against resistor overheating is then not in use.WARNING! Parameter 95.07 LCU DC REF (V) must be set to the minimum value(default) with brake resistors. Otherwise energy from the supply network can flow tothe brake resistor causing overheating of the resistor and damage to the equipment.For settings of other application programs, see the appropriate firmware manual.Resistor braking