4.2.7 Installation of RS485 Fieldbus Multi-Pump System Arrays
Figure 22 shows a typical multi-system arrangement with the RS485 fieldbus and its basic specifications for
the EasyConnect Model.
Figure 22: Multi-system arrangement with EasyConnect models with RS485 fieldbus
(See Table 4 for cable specifications)
Following points and information shall be considered:
➔ Various standard cables (see Table 4) are available to simplify the installation of a fieldbus array
as illustrated in Figure 22.
➔ 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
Table 4.
➔ The fieldbus array must be terminated as illustrated in Figure 22. A dedicated connector with
integrated termination resistor (see Table 4) is available.
➔ The RS485 Modbus RTU protocol for master communication is available at Levitronix
®
on
request.
➔ Do not use multiple master systems at the same time and do not use closed ring arrangements.
4.2.8 Installation of Fieldbus for Serial Pumping
Blending setup with 2 pumps can be done as shown in Figure 6. Same instructions can be followed as
mentioned in Section 4.2.7.
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