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LTPH-SM-1014-03, Issue 3
Step
Procedure (Continued)
All connections to terminal block TB1 (Power Access connector) must be done to local
codes.
7
Attach a ring connector (or locally approved connector) to terminate the 12 AWG ground wire at
frame ground (FGND) on the Power Access connector (if needed).
8
Connect a 12 AWG gauge wire to the -48 V RTN terminal in position 3 (see
the Power Access connector. Connect the opposite end of this wire to the battery return of the CO
battery supply at the fuse panel. If a connector is required, conform to local code.
9
Connect a 12 AWG gauge wire to the -48 V RTN terminal in position 4 (see
the Power Access connector. Connect the opposite end of this wire to the battery return of the CO
battery supply at the fuse panel. If a connector is required, conform to local code.
10
Connect a 12 AWG gauge wire to the -48 VA terminal at position 1 (see
Power Access connector (for slots 1-14). Connect the opposite end of this wire to the -48 Vdc CO
battery supply at the fuse panel. (Fuse is removed.) If a connector is required, conform to local code.
11
Connect a 12 AWG gauge wire to the -48 VB terminal in position 2 (see
Power Access connector (for slots 15-28). Connect the opposite end of this wire to the -48 Vdc CO
battery supply at the fuse panel. (Fuse is removed.)
12
Install a fuse of appropriate value in the fuse panel tray, based on the power recommendations given
in
"Power Specifications" on page 87
13
Close the ferite clamp.
14
Connect the fuse panel to the office power supply according to CO guidelines.
15
With a voltmeter, verify voltages on the Power Access connector (see
There should be -48 V across pins 1, -48 VA and RTN's 3 and 4 and pin 2, -48 VB and RTN's 3 and
4. Returns are tied together.
16
Replace the slide panel that covers the Power Access connector by placing the cover over the screws
and aligning the panel holes with the screws. Slide the panel
place, then tighten the screws.
17
Proceed to
"Connecting the Network Interface" on page
? ? ? ?
Installer Signature
HMS-358 List 1 and List 2
and
Table 21 on page 91
.
1
/
-inch to the right until it snaps into
4
22.
January 12, 2001
Installing the Power Cables
Figure 14 on page
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20) of the
Figure 14 on page
20) on the
Figure 14 on page
20).
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