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LB308A
Chapter 3: Installation
Ethernet Extender Switch.
1
2
5
3
4
Figure 2-3. Power connectors on the switch.
3.3.3 Alarms for Power Failure
Step 1:
There are two pins on the terminal block used to detect a power failure.
The output is normally closed when the power source is active. Use this as a dry-
contact application to send a signal that detects a power failure.
Table 3-1. Power input assignment.
Number
Input
Polarity
Voltage
Connector
1
Power 3
12 VDC
DC jack
2
Power 2
+
12–48 VDC
Terminal block
-
Power Ground
3
Power 1
+
12–48 VDC
-
Power Ground
4
Earth Ground
5
Relay output rating
1 A @24 VDC