Paradyne 8820-S2-903 - Manual
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Table of Contents:
- Page 2 – October; Wiring the PEM; PEM with Internal Power Terminals; PEM; PEM
- Page 3 – You need a Phillips screwdriver to remove the PEM from the BAC.; Removing the PEM from the BAC; Procedure; Ensure that the power is disconnected at the source.; Ring Tongue
- Page 4 – Installing the Replacement Power Entry Module in the 8820 BAC; Copyright
8820-A2-GZ45-20
October 2004
1
Replacement DC Power Entry Module
for the 8820 Broadband Access Concentrator
Models 8820-S2-903 and 8820-S1-906
Installation Instructions
Document Number 8820-A2-GZ45-20
October 2004
DC Power Entry Module for the 8820 BAC
The plug-in Power Entry Module (PEM) is used in the 8820 Broadband Access
Concentrator (BAC), model 8820-A2-5xx, to provide 48 V or 60 V power isolation
and distribution, overcurrent protection, and power filtering and monitoring. The
Model 8820-S2-903 PEM accepts –48 VDC, and the Model 8820-S1-906 PEM
accepts –48 VDC or –60 VDC.
Figure 1.
8820 Broadband Access Concentrator
The 8820 BAC is shipped with two PEMs installed.
The PEM consists of a printed wiring board (PWB) attached to an L–shaped
faceplate. The PWB holds the electronic circuitry, including a faceplate–mounted
circuit breaker and power input connectors. The PEMs mate with connectors on
the backplane of the BAC. The L–shaped faceplate provides a shelf for dressing
and protecting the wiring and serves as a handle for insertion and removal.
Two PEMs (with separately fused power sources) are always required to provide
power redundancy. When installed in the chassis:
The module on the left is identified as PEM A and handles the A power source.
The module on the right is identified as PEM B and handles the B power
source.
00-16543-01
Power
Entry
Modules
ALARMS
Major Minor
Fan
B
A
POWER
SERIAL
SMCM
CLOCK
A
ALARM
2
4
6
8
10
12
14
16
18
1
3
5
7
9
11
13
15
17
LAN/WAN SLOT
B
CLOCK
B
A
SERIAL
MCC
AC
ALARM
48V R
T
N
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING!
POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING!
POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
DSL
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
DSL PORT
1
2
3
4
MCP
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
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Summary
2 October 2004 8820-A2-GZ45-20 Wiring the PEM HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, take proper static cont...
8820-A2-GZ45-20 October 2004 3 WARNINGS: It is recommended that the following procedure be performed by a qualified electrician. The 48 VDC or 60 VDC power must be disconnected at its source before attempting to connect wiring to the PEM. Do not remove wired PEMs without first disconnecting the ...
4 October 2004 8820-A2-GZ45-20 Installing the Replacement Power Entry Module in the 8820 BAC Procedure 1. Apply the supplied compression–type ring tongue terminals to the #8 AWG power wires. Use the Molex Magna Crimp Hand Tool (Part No. MCT–8200). 2. Fasten the #8 AWG wires, with their ring tongue t...
