Volt Power Supply (Vb-44022) - Panasonic DBS 576 Technical Manual

Section 300-Installation

-48 Volt Power Supply (VB-44022)

Guidelines
• Any cabinet that contains an E&M Tieline Card, Ground Start/Loop Start Card or
• Each cabinet must have a separate -48 Volt Power Supply.
Installation
1. Turn the power switch and the external breaker OFF, and disconnect the AC
2. Insert the -48 Volt Power Supply into the -48 volt power supply slot as shown in
3. Secure the -48 Volt Power Supply into place by inserting the supplied lock
4. Connect the provided 5-conductor power cable to the power connector on the
5. Connect the green lead to the cabinet ground terminal as shown.
6. Connect the black lead to the - 48 Volt terminal of the power supply.
7. Connect the orange lead to the SG terminal of the power supply.
8. Connect the red lead to the 24 Volt terminal of the power supply.
9. Connect the blue lead to the GND terminal of the power supply.
10. Connect the supplied green wire from the SG terminal of the power supply to
11. Reconnect the AC cable, turn the external breaker to ON and turn the power
576-13-300
CAUTION:
• Turn the power switch and the external breaker OFF, and disconnect the
AC cable before installing the -48V power supply.
DID Card must have a -48 Volt Power Supply.
cable.
Figure 3-11.
washer and screw into the front tab.
front of the -48volt power supply.
the upper Power Supply ground screw.
switch to ON.
DBS 576 (USA), issued 6/2/98
Chapter 3. Cabinet Installation
3-11