The HLL Bus Chokes from Bosch Rexroth are current-compensated DC-link chokes designed to condition and stabilize the DC bus in IndraDrive power systems when connecting a supply unit to one or more drive axes.
By adding inductance in the DC link, these modules help limit current transients and reduce the stress of dynamic load changes on the shared DC bus, supporting more controlled energy flow between the supply and the drive system. The series is built for high-voltage DC bus operation in the typical IndraDrive range and is specified with defined continuous current capability along with a higher short-duration peak current allowance for demanding motion cycles. For reliable industrial integration, the units include a temperature monitoring contact and are intended for cabinet installation with defined mounting orientations and free-convection clearances to manage heat. Connection is made through dedicated DC+ and DC− terminals plus a required protective-earth bond, with wiring practices that emphasize correct polarity and grounding continuity from the supply through the drive system.
