Setup Guide

Figure 16. DC power connector and wiring block
1. Wiring block
2. Power connector
3. PSU connector
1. Strip a 1/2 inch section of insulation from each of the power connector’s wires, as shown.
2. Insert each of the power connector’s bare wire lengths into the wiring block. The blue wire is -48V, the black wire is the
positive return, and the yellow/green wire is the ground wire, as shown.
3. Use a flat-blade screwdriver to tighten the screws that secures the bare wires into the wiring block.
4. Secure the site’s DC power source wires to the other side of the wiring block, see steps 1 and 3.
NOTE: Do not cross the wires.
5. Insert the DC power connector into the power socket of the DC PSU. Ensure that the connector pins firmly seat and you
hear the click of the power connector’s left and right levered clamps lock into place.
NOTE: Never try to force the power connector into or out of the DC PSU power socket.
NOTE: To remove the power connector from a DC PSU, squeeze the levers on both sides of the connector. Doing so
disengages the power connector’s clamps. While continuing to squeeze, pull the power connector from the DC PSU socket.
DC labels
Attach the DC rating labels to the S4048–ON Regulatory label on the bottom of the switch.
1. Find the two DC power and DC input rating labels included with the DC power supply kit, as shown.
2. Locate the regulatory label on the bottom of the switch.
3. Attach the DC power label and input rating label over the AC power label and input rating label outlined in red, as shown.
28
Power supplies