Inovance MD880 Series - Inolink Communication Bus

4 HCU Control Module
- 93 -
I U
I U
HCU
XAI
500 Ω
2
1
AI1-
AI1+
J14
XAO
2
AO1
1
AGND
J18
Motor
3.3 nF
>630 VAC
PE PE
PT100
Figure 4-10 Temperature measurement with AI and AO
4.9.3 InoLink Communication Bus
When information exchange is required between several AC drives in the system, use an
InoLink bus.
The parameters of the InoLink bus are as follows:
Baud rate: 5 Mbps
Maximum number of nodes: 16
Shielded twisted pair cables must be used for wiring. To achieve the best
communication quality and prevent electromagnetic interference, it is recommended
to use high quality cables, such as PROFIBUS cables; the cable should be as short as
possible, and the link length must not exceed 40 m. Keep the cables from entangling
and away from high-voltage cables.
If an HCU is at the end of the InoLink link, it must be equipped with a termination
resistor, and the J10 and J12 jumpers must be turned to the ON position.
The RS485 link topology of the InoLink bus is as follows: