7 7.1 7.1.4 DC-bus operation Introduction General information on the accessories 7.1.4 General information on the accessories Fuses in the DC bus For device protection, multi-axis controllers up to 11 kW are equipped with a fuse in the installation backplane. The fuse is only integrated into the current path if the busbar system (X109) is used. When operated in a DC-bus connection, single-axis controllers can be retrofit with a fuse in the installation backplane for device protection (see busbar mounting set). When the alternative terminal connections are used for DC-bus wiring, external fuses must be integrated into both current paths (+UG/-UG).
Busbar mounting set With the busbar mounting set (E94AZJA0xx) you can connect a single-axis controller via a busbar to a DC bus, e.g. to provide additional brake power. The busbar mounting set also includes the corresponding fuse. DC-input module With the DC-input module (E94AZEX100) you can establish the electrical connection between the DC cables and the busbar. Multi-row or distributed arrangements are possible. Filters RFI filters and mains filters are available for the devices connected to the AC mains (supply modules or single-axis controllers). Depending on the application, additional filters may be required for compliance with the EMC regulations.
When dimensioning the filters, please consider: ƒ Motor cable lengths ƒ Number of axis controllers ƒ Motor powers 7.1-4 EDS94SPP101 EN 3.1-04/2007