4-2. Wiring the Alarm Relay
JetNet 3008 /JetNet 3008f provides one dry relay output for power or port
link event; the alarm relay is “Normal open” and form a close circuit when
The relay conductor ability is 24W when it connects with a DC 24V power
source and maximum current is 1A. In the following diagram shows how to
make an alarm circuit.
4-3. Wiring Earth Grounding
In the real fields, there might have a lot of automatic device, such as AC
motors, electric welding machine, power generator; those devices will
generate electromagnetic and disturb communications. To prevent those
noises, the switch should be well earthed. In the figure-shows how to
make connection.
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