18
LIQUID LEVEL INDICATOR - INSTRUCTION MANUAL
1 + POWER SUPPLY
2 - 24 V DC
3 - ANALOG INPUT
4 + 4..20 mA
—
5. Electrical connection
5.1 Micro-switches wiring
Wire the electrical cables in accordance with the
ordered model following the electrical scheme
showed in the figure 22.
DIAGRAM K DIAGRAM Y DIAGRAM X DIAGRAM W
5.2 Analog output and Modbus
communication wiring
(for Comem eOLI and Comem
eOLI22)
5.2.1 Power voltage
Connect the power voltage (as written on the label
on the terminal box cover) to terminals 1-2.
5.2.2 Analog output
Terminals for analog output 4-20 mA: 6-7
5.2.3 Modbus communication (optional)
Digital output RS485: terminals 3-4
(for the Modbus register and address, see the
Appendix A)
Figure 22
Figure 23
5.3 Comem eViewer wiring
5.3.1 Power voltage
Connect the power voltage (as written inside the
terminal box, fig.18) to terminals 1-2.
5.3.2 Analog input
Connect the analog signal (as written inside the
terminal box, Fig. 24) to terminals 6-7 : 4-20 mA.
Negative Comem eViewer (3) with negative Comem
eOLI (7). Positive Comem eViewer (4) with positive
Comem eOLI (6).
5.3.3 Comem eViewer – Comem eOLI connections
The following scheme (Fig.24) describes the
connections for signal remoting between an
electronic liquid level indicator and the eViewer.
Figure 24
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