Implementing The Dc Bus Coupling - Bosch Rexroth IndraDrive CsDrive System with HCS01 Project Planning Manual

108/341 Bosch Rexroth AG
Combining the individual components
Supply via all devices

Implementing the DC bus coupling

Maximum number of devices
Use this type of DC bus coupling if you exclusively use one HCS01 device
type in your application.
Components marked with gray background color: Optional, de‐
pending on the application; the choke is used to reduce current
harmonics
A Component HCS01 (all components A identical); connected to
supply mains via balancing chokes; interconnected via DC bus
Bb Bb relay contact wiring
M Module bus (not obligatory)
Fig. 4-32: Group Supply; all HCS01 Components Connected to Supply Mains
Features
● All devices have to be of the same type
● DC bus continuous power of the supplying devices reduced by parallel
operation
● Energy compensation between the devices is possible (the DC bus ca‐
pacitors of the devices are connected in parallel)
● Balancing of the integrated braking resistors exists (equal load of all
braking resistors integrated in the devices)
● Balancing chokes or balancing resistors required in supply feeder
● It is possible to connect DC bus capacitor units
● Wiring effort for the mains connection of all devices relatively big
● DC bus short circuit functionality has to be realized externally, if required
A maximum of 8 devices can be coupled at a common DC bus.
The maximum number of devices which can be interconnected via DC bus
coupling depends on
● the power reserves of the supplying devices
(The power reserve (P
possible DC bus continuous power of the device and the power con‐
sumed by the motor connected to the device.)
● the type of DC bus connection:
– Connection looped through via DC bus connector X77
– DC bus connecting bar with spur lines to the individual devices
● the sum of DC bus continuous powers of all supplied devices
● the mains voltage value
DOK-INDRV*-HCS01******-PR05-EN-P
Rexroth IndraDrive CsDrive Systems with HCS01
) results from the difference between the
reserve