￭ DC-side components
Frame R6i and R7i inverter modules are connected to the DC bus through fuses. The design
presented in this manual has flush-end fuse blocks bolted to the DC busbars.
A DC switch/disconnector can be installed if quick isolation of the module from the DC bus
is required. One of the auxiliary contacts of the switch is used for monitoring the open/closed
state of the switch.
A capacitor charging circuit must be fitted if
• the inverter module is connected to the DC bus through a DC switch/disconnector, or
• the inverter unit is directly connected to the DC bus and the supply unit of the system
does not have a charging capability.
If a charging circuit is required, the inverter module is to be ordered using option code +F272.
With frame R6i, all charging components are built into the module. R7i modules with option
code +F272 require an external charging contactor and resistors, which are included in the
DC connection kit for frame R7i.
The common mode filters are mounted onto the busbars that connect to the DC input of the
inverter module.
DC bus installation parts (for Rittal VX25 enclosures)
The brackets in this kit act as a mounting base for the busbar supports of the Rittal Flat-PLS
DC bus and ensure its correct placement and alignment inside the cabinet line-up.
Note:
The designs presented in this manual for Rittal VX25 enclosures employ the Rittal Flat-PLS
busbar system. Make sure that the current carrying capability of the busbars is not exceeded
at any point of the drive system.
IllustrationKit codeOrdering codeQtyUsed with …
A-468-X-001-
VX
3AXD50000333387
1 kit per cu-
bicle
400/600/800 mm VX25
enclosure
Instruction code:
3AXD50000333639
Ordering information 225
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