Brake Circuit Commissioning - ABB ACS800 Hardware Manual

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Brake circuit commissioning

For 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 is
required, 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 not
enabled by parameter setting, the brake resistor must be disconnected because the
protection 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 to
the 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
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