Powering; Table 3. Span Powered Pair Assignments; Table 4. Current And Voltage Limits - ADTRAN Total Access 3000 Installation And Maintenance Practice

Total Access 3000/3010 4-Pair Line Power Unit Installation and Maintenance Practice

Powering

The LPU operates on a –40 VDC to –56.7 VDC input voltage range.
The LPU uses about 10 watts of total power on the board, as follows:
• 2 watts are in the following input circuitries:
– input diodes (A and B diodes)
– inrush limiting Field Effect Transistor (FET)
– input inductor
– input fuse
• 1 watt is dissipated in the locally powered micro-controller and power supply components
• 7 watts are in the span supply
The output voltages are ±145 VDC and are provided on the four loop pairs as shown in
Table 3.
Total Access 3000/3010 Backplane Pair Number
The LPU current and voltage limits are shown in
Voltage Supply
290 VDC ±5%
–40 VDC to –56.7 VDC
Both A and B inputs should be wired to limit the amount of current
flowing into the powering pins on the Total Access 3000/3010
backplane connector.
8

Table 3. Span Powered Pair Assignments

Pair 1
Pair 2
Pair 3
Pair 4

Table 4. Current and Voltage Limits

Minimum Current
0.004 amps
Module Edge Connector Pin Number
Table 4.
N/A
NOTE
(Tip, Ring)
C6, B6
C5, C4
B5, A5
B4, A4
Maximum Current
0.4 amps
2.6 amps
61181500L2-5B