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Connecting
5.5 Transmitter power supply, communications and I/Os connection
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
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Operating Instructions, 08/2017, A5E37367739-AC
5.5.1
Preparing for the connections
1.
Remove blind plugs where required.
①
Power supply connection
②
Input/output connection (channels 2 to 4)
③
Modbus connection
2.
Loosen spring screws on housing lid.
3.
Open housing lid.
A label showing the configuration is placed on the outside of the transmitter housing.
①
Power supply connec-
tions
L/+
Terminal 1
N/-
Terminal 2
Terminal 3
②
Key to symbols
A
Configured as active input/output
P
Configured as passive input/output
NO
Connected as normally open contact
NC
Connected as normally closed contact
③
Updates (to be filled in on firmware and hardware updates)
④
Device configuration date
⑤
Initial firmware and hardware revisions
⑥
Configuration of channels 1, 2, 3 and 4