22 Operation principle and hardware description
Overview diagram of a drive with a DC/DC converter unit
This diagram shows a possible application of a converter unit in an example system. The
DC/DC converter unit includes a DC/DC converter module and a filter module. For the
DC/DC converter configurations, see Type equivalence table on page 151.
The customer must equip the energy storage with fuses and a device for disconnecting the
storage from the DC/DC converter. The disconnecting device does not belong to the
DC/DC module product offering.
1. AC supply
2. Input (AC) fuses
3. Supply module
4. DC bus (-, +)
5. Inverter DC fuses (with or without a DC switch/disconnector)
6. Inverter modules
7. Motors
8. DC fuses (DC bus side, with or without a DC switch/disconnector)
9. DC/DC converter unit (converter and filter modules)
10. Output DC fuses
11. Energy storage DC fuses
12. Energy storage with disconnector.and contactor.
2
1
3
t°
M
3~
M
3~
6 6
9
10
4
5
7
8
3
12
11
_
+
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