Danfoss iC7 Series Design Guide

7.14.3 AuxBus Grounding Principles
To ensure robust communication, good grounding strategy is needed. Below is a recommended grounding strategy illustrated using
integration units. Same strategy can be applied for loose option filters.
X25
X86
X85 X85X86
X85X86
A
1
+24 V
2
GND
3
CAN_H
4
CAN_L
5
+24 V
B C
D
1
+24 V
2
GND
3
CAN_H
4
CAN_L
5
Term. Disable
1
+24 V
2
GND
3
CAN_H
4
CAN_L
1
+24 V
2
GND
3
CAN_H
4
CAN_L
1
+24 V
2
GND
3
CAN_H
4
CAN_L
5
+24 V
1
+24 V
2
GND
3
CAN_H
4
CAN_L
5
+24 V
1
+24 V
2
GND
3
CAN_H
4
CAN_L
5
+24 V
5
Term. Disable
5
Term. Disable
e30bh675.10
Figure 90: AuxBus Circuit Diagram
A The AuxBus interface in the power unit B AuxBus board 1
C AuxBus board 2 D AuxBus board 3
7.15 The Pre-charging Unit
The pre-charging unit is used for pre-charging the system modules that are connected to the same DC bus. There are 3 electrical sizes,
and an IEC and an UL variant of these. The pre-charging unit is available as an accessory.
e30bk547.10
1
2
Figure 91: Pre-charging Units
1 Pre-charging unit, IEC 2 Pre-charging unit, UL
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Design Guide | iC7 Series Liquid-cooled System Modules

Danfoss iC7 Series Specifications

General

Brand	Danfoss
Model	iC7 Series
Category	Media Converter
Language	English