Panasonic Digital Business System 576 Technical Manual Section 300

Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-15
8.  Connect the ground wires of the power cables connected at the switch box to the 
frame ground. One cable is supplied with switch box and one cable is supplied 
with the expansion cabinets.
Figure 4-17. Switch Box AC Cables to Frame Ground Connections 

Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-16 DBS 576 (USA), issued 6/2/98 576-13-300
9.  Connect the power supply to switch box AC cables to the power supply units of 
the top, middle and bottom cabinets.
10.  Connect the ground wires of the expansion AC cables connected to the power 
units to the chassis.
Figure 4-18. Power Supply AC Cable to Frame Ground Connections 

Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-17
11.  Connect the BATT-CTRL connector on the switch box using the supplied 
BATT-CTRL cable harness.
12.  Connect the BATT-CTRL cable harness to the connectors of the top, and middle 
power supply units. Use the longest cable for the top power supply and the 
shortest cable to the middle power supply. 
Figure 4-19. Battery Control Connections to Expansion Cabinet Power Supplies 

Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-18 DBS 576 (USA), issued 6/2/98 576-13-300
13.  Screw the +24V (white) and GND (black) cables of the BATT-CTRL harness to 
the bottom power supply unit in base cabinet.
Figure 4-20. Battery Control Connection to Base Cabinet Power Supply
14.  Make certain the base cabinet power supply is OFF.
15.  Plug the AC cable into an outlet with a dedicated breaker.
Note:An dedicated external circuit breaker must be used.
16.  The power switch...

Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-19
Battery Backup (VB-44025)
Guidelines
• When installing batteries for battery backup, each cabinet must have a separate 
set of batteries.
• The battery cable must be at least 18 AWG.
• With normal condition, the backup batteries last for about 20 minutes.
• The backup batteries should be replaced about every 3 years.
Installation
1.  Connect the red +24V cable to the + terminal of battery...

Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-20 DBS 576 (USA), issued 6/2/98 576-13-300
Figure 4-21. Installation of cabinet backup batteries (VB-44025)
-48 Volt Power Supply (VB-44022)
Guidelines
• Any cabinet that contains an E&M Tieline Card, Ground Start/Loop Start Card or 
DID Card must have a -48 Volt Power Supply.
• 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 
cable.
2....

Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-21
4.  Connect the provided 5-conductor power cable to the power connector on the 
front of the -48volt power supply.
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...

Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-22 DBS 576 (USA), issued 6/2/98 576-13-300
Connecting the Systems
Guidelines
• When expanding a system using the building block method, use the supplied 
cables to connect the TSW288/TSW576 card to the CBL card.
• Use the TSW288 card when the system has 288 or fewer ports. Use the TSW576 
card when there are more than 288 ports.
• The description of how to connect systems when the building block method is 
based on an example of...

Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-23
5.  Use the supplied cable to connect the connector at the bottom right of the 
TSW576 card installed in the OP1 slot in the 1st cabinet to the connector at the 
bottom left of the CBL card installed in the CPC slot of the 4rd cabinet.
6.  Use the supplied cable to connect the connector at the top right of the TSW576 
card installed in the OP1 slot in the 1st cabinet to the connector at the...

Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-24 DBS 576 (USA), issued 6/2/98 576-13-300
Figure 4-23. System connection using building block method (576 port example)
Notes: The CBL cables must be routed through the greyed cable trough.
The circled numbers above refer to the installation procedure step numbers.