AKD2G-S Installation Manual, Safety 1 | 8 Electrical Installation
8.7 DC Bus link connector X3/X3B
The DC bus link can be connected in parallel so that the power returned from slowing down motors is divided
between all the drives that are connected to the same DC bus link circuit. Every drive must have its own power
connection to mains voltage sharing the same branch, over current protection devices, even if the DC bus link is
used. Drives working generatively very often should be placed beside drives, which need energy. That reduces
current flow on longer distances.
The sum of the application currents in the connected in parallel DC bus wires must not exceed 48 A.
Wiring: Use 6mm² unshielded single cores with a max. length of 200mm; use 6mm² shielded cables for
longer lengths. In this case no fuse for line protection is required.
The drives can be destroyed if DC bus link voltages are different. Only drives with mains supply that share
the same AC branch, over current protection devices (identical mains supply voltage) may have the DC
bus links interconnected.
Interconnection of DC bus links works best in systems powered by 3-phase AC or DC power. Consult
Kollmorgen for DC bus linking with single phase AC power input.
l
8/4 pin, pitch 7.62/10.16 mm
l
Optional T version (not available for 7V24 drives)
l
Mating connector data (➜ # 54)
Pin
Label Signal
Description
7 +DC +DC DC Bus link positive
8 -DC -DC DC Bus link negative
92 Kollmorgen | kdn.kollmorgen.com | June, 2023
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