Antaira Technologies - Industrial Ethernet Switches
LMX-1204G-SFP Series Hardware Manual V1.2
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Figure 2.8 - Wiring the Fault Alarm Contact
2.9 Wiring the Fault Alarm Contact
The fault alarm contact is in the middle of the terminal block connector as the picture shows
below in Figure 2.8. By inserting the wires, it will detect the fault status including power failure
or port link failure (managed industrial switch only) and forma normally open circuit. An
application example for the fault alarm contact is shown below in Figure 2.8.
Caution:
The wire gauge for the terminal block should range between 12 ~ 24AWG
If only using one power source, jumper Pin 1 to Pin 5 and Pin 2 to Pin 6 to
eliminate power fault alarm.
2.10 Grounding Note
Grounding and wire routing help limit the effects of noise due to electromagnetic interference
(EMI). Run the ground connection from the ground screw to the grounding surface prior to
connecting devices. The grounding screw symbol is shown blow in Figure 2.15.
Figure 2.15 - Grounding screw
Caution: Using a shielded cable achieves better electromagnetic compatibility.
