Design Guide | iC7 Series Liquid-cooled System Modules
Power unit 1 Power unit 2
Figure 89: AuxBus Topology for DC/DC Converter Modules DR10L and DR12L
7.14.2 AuxBus Cable Requirements
It is recommended to use the AuxBus cables that are provided by Danfoss. AuxBus is delivered with 3 m (10 ft) of cable. If other cables are
used, see the table Table 16.
NOTICE
RISK OF ELECTRICAL INTERFERENCE
AuxBus consists of point-to-point connection, but the signals are connected in series. Cables that are longer than 10 m (33 ft) can
create interference and communication problems.
l Do not exceed 10 m (33 ft) of total AuxBus cabling.
l Keep AuxBus cables as short as possible and separate them from high-power cables.
Table 16: Cable Requirements for Other than Danfoss-provided Cables
Item Value
Cable type 6-wire, shielded and twisted pair (STP)
Impedance 120 Ω
Maximum length 10 m (33 ft)
Cable (example): LAPP KABEL, UNITRONIC® BUS LD FB P, 2170215.
Cable (example, UL): LAPP KABEL, UNITRONIC® BUS LD FB P A, 2170815.
Connector: Phoenix Contact, MC 1,5/ 5-ST-3,5 BK, 1769919 (LCL Filter: 2721-105/026-000).
Cabling recommendation for drives with a loose option AuxBus
Cabling recommendation for drives with integration unit filters
Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A | 87
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