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2.2 Wiring Power Inputs
For redundant DC power inputs.
1.
Insert positive and negative wires into V+ and
V- contacts respectively of the terminal block
connector (Plug-side).
2.
Tighten the clamping screws to prevent the loosening of the DC wires.
3.
Power 1 and Power 2 support power redundancy and polarity-reverse protection
functions.
4.
Positive and negative power system inputs are both accepted, but Power 1 and
Power 2 must apply the same mode.
Note 1:
In order to protect the switch itself, a safe power-port connection can be achieved
by following procedures:
1.
Turn-off the power supply.
2.
Connect the power wire to the Plug-side connector.
3.
Plug the connector into the switch Power port.
4.
Power-on the power supply.
5.
VDE tested screwdriver is suggested for higer safety concern.
Note 2: Suitable
DC electrical wire is ranging from 12 to 24 AWG.
Note 3:
If 2 power supplies are connected to the switch, it will be powered from the one
with higher voltage level.
Note 4:
When loss of either PWR1 or PWR2, an alarm will be given through Dry Relay
Output(referring to 2.3. Wiring Digital Output), by the adequate setting in the management
software.
2.3 Wiring Digital Output
JetNet 5020G provides 1 digital output, also known as
Dry Relay Output
. The relay
contacts are energized (open) under normal operation and will be closed in fault
conditions. The fault conditions can be power failure, Ethernet port linkage down or other
pre-defined events configured in management UI.
