Lucent Technologies Lineage
®
 2000 ECS-12U Controller J85501E-2
4 - 30  Installation and Setup   Issue 3  July 1998
External Wiring
NOTE The ECS-12U Controller may provide false alarms if 
rectifier interface cables are connected to the controller and 
are not connected to the respective rectifiers. 
Micro
rocessor 
and Datalo
er 
Boards
See Product Manual 167-790-109, Lineage
®
 2000 ECS 
Controller Options, for installation, wiring, and use of the 
optional expansion boards.
Circuit Pack 
Installation 
When replacing a circuit pack or adding a new circuit pack to a 
controller which is in service, the circuit pack hardware must 
first be set up as described in “Basic Hardware Setup”
 
in this 
section.
WARNING Circuit  packs can be damaged by static electricity. 
Operators should always be grounded when handling circuit 
packs. Connect the grounding wriststrap to the ESD ground 
plug on the controller front panel.
To install a circuit pack, simply open the controller front panel, 
pull out the drawer, and slide the board along its guide rails into 
the proper backplane connectors. Backplane connectors are 
arranged so that circuit packs cannot be inserted in the wrong 
slots. It is not necessary to pull fuses or power down the plant or 
controller in any manner to remove or add any circuit packs in 
the controller.
Re
lacement o
 
Multi
lexin
 
Board
If the multiplexing board (BCC1, see Figure 4-16) must be 
replaced, use the following procedure: 
1. Open the front cover, and pull out the drawer. Unplug any 
field wiring connected to CP1, CP2, or CP3 by lifting the 
terminal blocks off the board.
2. Lifting the front of the drawer, pull it out of the controller 
chassis completely and unplug the two ribbon cables at the 
multiplexing board BCC1 (P705 and P706) and the green 
ground lead.