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General
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11 LMV6 power supply
Power to the LMV6 is supplied via the internal power supply unit. This internal power
supply unit supplies the internal assemblies, SQM4 and AZL66 via terminal X11/X12.
Power to the bus users is supplied together with the communication lines in a common
cable.
As the power load for the internal power supply unit is limited, an additional power
supply unit is required when operating with more than two SQM45s and one SQM46 (or
over greater distances). The bus topology is designed as a line structure and has a
start and an end node.
The individual bus users are connected in series, whereby the respective end nodes
are terminated by a bus terminating resistor. The LMV6 is a component of the
communication line and is looped in between the AZL66 and the SQM4. In this
arrangement, the AZL66 always assumes the function of a bus end node. The required
bus terminator is already integrated.
With the SQM4, the last user becomes the bus end node (internal bus terminating
resistor must be activated via a jumper). The other node users within the line structure
are configured without terminating resistor.
11.1 Example: "Operation with 3 actuators"
Installation of all components in the burner: CAN bus cable "LMV6 last SQM4"
< 20 m
Figure 27: Installation of all components in the burner: CAN bus cable LMV6 last SQM4 < 20 m
Note on example
Total length of CAN bus cable 60 m
LMV6 Installation Guide
11 LMV6 power supply
34/39
CC1J7560en
4/21/2020
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