Ethernet Switch User Manual
Manual_hw-ESML3-FL2-D4-Rev1011
Copyright © KBC Networks Ltd.
Page 11 of 18
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Figure 2.3 Power Input Terminals
2.11
Alarm Relay Output
The alarm terminal, which is also a green screw block terminal, (see Figure 2.3) has
two relay outputs and is used to indicate if there is a problem with the power supply
to the switch, this function must be enabled using the management software.
Figure 2.4 Alarm Terminal
2.11.1
Single Power Supply Connected:
Contacts
Power On
Power Off
1 & 2
Open
Closed
2 & 3
Closed
Open
2.11.2
Dual Power Supplies Connected:
Contacts
Power On
Power Off
1 & 2
Closed
Open
2 & 3
Open
Closed
