AKD2G-S Installation Manual, Safety 1 | 8 Electrical Installation
8.7 DC Bus link (X3)
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 rated currents for all drives connected in parallel to an AKD2G must not
exceed 48 A.
Examples:12S-12S-12D-12D-12D or 06D-12S-12D-06D-06D-03S-03S-03S
Wiring: Use 6 mm² unshielded single cores with a max. length of 200 mm; use 6 mm² shiel-
ded 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 sup-
ply 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.
8 pin, pitch 7.62 mm
optional T version
Mating connector data (
Pin
Label
Signal
Description
7
+DC
+DC
DC Bus link positive
8
-DC
-DC
DC Bus link negative
8.7.1 Fusing
External regen fusing FB1/FB2 (
# 78). DC bus link fusing depends on topology (see next
page (
# 77)).
Wiring
topology
Ampere
rating@240V
Ampere
rating@480V
UL region
example Eaton:
CE Region
example Mersen:
AKD2G-Sxx-6V
Group: Fgroup
max. 30 A
na
DFJ-30
HP6M30
Busbar: Fbus
max. 15 A
na
DFJ-15
HP6M15
AKD2G-Sxx-7V
Group: Fgroup
max. 30 A
FWP-30B
HP10M30
Busbar: Fbus
max. 15 A
FWP-15B
HP10M15
76
Kollmorgen | kdn.kollmorgen.com | July 2020