Carrier Access 1750 user manual Broadmore Power Input Connector, Connecting -48 VDC Power

Electrical Installation

Broadmore Power Input Connector

Broadmore Power Input Connector

Power is provided as –48 VDC to the connection points in the rear of the chassis. Voltage may be provided directly from the user’s power source. Optionally, the Broadmore 1750 comes with a redundant AC power supply. The power connector on the lower back of the chassis is shown below. The connector is a compression type in which the wire is inserted in the lower opening and the compression screw above is tightened to secure the wire. A small flathead screwdriver is required to secure the wires.

POWER

-48VDC B

RETURN

RETURN - 48VDC A

Connecting –48 VDC Power

1.Identify the power cables and secure their power.

2.Use a Volt-Ohm Meter (VOM) to verify the voltage and polarity of the cable wires.

3.Turn off power to the cables and use a VOM to verify there is no voltage present.

4.Run the power cables to the connection point on the chassis rear as shown above. Note there are two power rail inputs, A and B, as labeled.

5.Insert the cable wires and tighten the compression screws to secure the wires.

6.Restore power to the cables. Use the VOM to verify voltage is present at the chassis connection points.

7.Turn off power to the cables until ready for the power-up sequence.

6-14 Broadmore 1750 - Release 4.6