User guide

Installation 2-9

Connecting Standalone to AC Power

To connect the Solo E1 DSU to AC power:

1. Insert the AC power cable into the power receptacle on the

rear panel.

2. Connect the other end to a suitable AC outlet.

The LEDs on the front panel ßash as the Solo E1 DSU automatically

runs the Self Test at power up. The PWR/TEST LED blinks yellow and

then illuminates green when the test is successful. If Self Test fails, the

LED illuminates red for 10 seconds and then illuminates green; contact

Digital Link Technical Support.

Connecting Standalone to DC Power

For safety, install the Solo E1 DSU in a Restricted Access Area in

accordance with Articles 110-16, 110-17, and 110-18 of the National Electric

Code, ANSI/NFPA 70. An example is a dedicated equipment room or

closet that is clean, well-ventilated, and free of environmental extremes.

Allow two to three feet of clearance for access.

The Solo E1 DSU will operate on -48 to -72 VDC sources.

To connect the Solo E1 DSU to DC power (Figure 2-4 ):

1. Prepare the tray cable:

a. Strip 5 cm (2 in) of jacket material off the tray cable.

b. Strip 1.27 cm ( ¹⁄₂ in) of insulation off each wire.

CAUTION: The Solo E1 accepts use of any nationally approved cordset

with an IEC 320 connector.

CAUTION: If you connect the Solo E1 DSU improperly to DC power,

you may damage the Solo E1 DSU.

Use only a tray cable that is UL recognized 14 AWG, 3 conductors,

copper strand wire, electrical power and control cable, type TC: tray

cable, 600 V 90° C. An example is Alpha Wire Company No. 45443.