Chapter 3: Installation
Ethernet Extender Switch.
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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 | |
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1 | Power 3 |
| 12 VDC | DC jack | |
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2 | Power 2 | + |
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- | Power Ground |
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3 | Power 1 | + | Terminal block | ||
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- | Power Ground | ||||
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4 |
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| Earth Ground |
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5 | Relay output rating |
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| 1 A @24 VDC | |
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Page 28 |
| LB308A |
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