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Connecting
5.5 Transmitter power supply, communications and I/Os connection
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
45
Connect wires
1.
Remove cap and ferrule from cable gland and slide onto cable.
Wall mount enclosure: Remove blind plug and fit cable gland.
2.
Push cable through open gland and cable path.
3.
Restore ferrule and tighten cap to lightly hold cable in place.
4.
Fold signal cable screen back over outer sheath and ground beneath cable clamp.
In case of shielded cables, use metal cable glands for proper connection.
5.
Connect wires to terminals using screwdriver.
6.
Tighten cable gland.
The numbers in the graphics below refer to table Preparing for the connections (Page 42)
If connected as input or output (channels 2 to 4)
Active configuration
Passive configuration
⑫
-
⑬
-
⑪
+
⑫
+
Termination example for channel 3
If connected as relay (channels 3 and 4 only)
Normally closed contact (NC)
Normally open contact (NO)
⑫
NC
⑬
NO
⑪
NC
⑫
NO
Termination example for channel 3 - relay connection