It handles the energy generated by decelerating motors for example in emergency stopping.
Whenever the voltage in the common DC bus exceeds a certain limit, a braking chopper connects the bus to a braking resistor.
Offering includes 1-phase brake unit and 3-phase dynamic brake unit (DBU) which utilizes R8i modules.
Two different braking concepts. The main difference between the concepts is controllability:
One-phase brake chopper, on-off controlled (no modulation), brake current depends only on the resistance of the brake resistor. Compact and cost efficient. Used mostly in single drives.
Three-phase brake unit with modulating control. Brake current/power is controlled. Used mostly in multidrives.
Features
Compact
Easy installation
High instantaneous braking capability
Designed for both single drive configurations and common DC bus drives