5.3
Connecting devices on secondary side
Secondary side (bottom)
Either connect a flowmeter with Modbus output or an EIA-485 device to the SITRANS I300 as
shown in the illustration below.
Note
The terminal box is detachable
For easier access unplug the terminal box. After connecting the wires, plug the terminal box
back in.
Wiring on secondary side (terminated bus), default setting
Connector
Description
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Supply (IS) out
-
Supply (IS) out
B (IS)
EIA-485 (IS) out
A (IS)
EIA-485 (IS) out
B' (IS)
not connected
A' (IS)
not connected
Connecting
5.3 Connecting devices on secondary side
SITRANS I300 Isolating power supply with EIA-485 interface
Operating Instructions, 01/2019, A5E45099319-AA
25
