KBC Networks ESML3-FL2-D4 - Manual (Page 11)

Ethernet Switch User Manual
Manual_hw-ESML3-FL2-D4-Rev1011
Copyright © KBC Networks Ltd.
Page 11 of 18 www.kbcnetworks.com
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