4.3.6 Installation of RS485 Fieldbus Multi-Pump System Arrays
Figure 27 shows a multi-pump system arrangement with the RS485 fieldbus and its basic specifications.
Figure 27: Multi-pump system arrangement with RS485 fieldbus
Following points and information shall be considered:
➔ Testing has been done with arrangements of 8 pump systems. Higher number is possible
but it is recommended to contact Levitronix
®
Technical Service department (see Section 8)
for details and support.
➔ Address setting of the pump units can be done with the Levitronix
®
Service Software and a
PC. A USB/RS485 converter cable with integrated initialization network can be ordered
according to Error! Reference source not found..
➔ The RS485 protocol for master communication is available at Levitronix
®
on request.
➔ Do not use multiple master systems at the same time.
➔ Do not use closed ring arrangements.
120 120
510
510
Master
Integrated
System
#1
Integrated
System
#2
Integrated
System
#N
5V
Main Bus Line: < 100 m
Shielded cable with twisted wires recommended.
Termination:
Recommended for main bus line Length > 5m.
Initialization Network:
Always recommended.
To be implemented at the master.
Branch Bus Lines:
Length sum of all < 33 m.
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