Application Guide

Section 5876 Installation Instructions
Issue AT, April 26, 2013 Spec. No. 582140000 (Models 802
NLDB, 802NLEB and 802NL-B)
Page 3-18 Chapter 3. Installing Distribution Devices and MCA/LMS Circuit Cards
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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
INSTALLING MCA AND LMS CIRCUIT CARDS
Circuit Card Handling
Warning: Before handling any circuit card, read and follow the instructions
contained on the Static Warning Page located at the beginning of this
manual.
A static wrist strap grounded through a one megohm resistor should
always be worn when handling the circuit cards.
Identifying the Circuit Cards
Circuit cards can be identified through two methods as described below.
a) The Emerson Network Power part number printed on the outside of the shipping
carton.
b) The Emerson Network Power part number silkscreened on the component side
of the circuit card.
Installing LMS Circuit Cards
Refer to the separate LMS Installation Instructions (Section 5879) for a procedure to
install LMS CPU, LMS Modem, and LMS Input/Output (I/O) circuit cards. Section 5879
can be accessed from the CD (Electronic Documentation Package) furnished with your
system.
Installing MCA Customer Alarm Relay
Circuit Card(s) and MCA I/O Circuit Card(s)
Refer to the following procedure, and install the MCA Customer Alarm Relay circuit
card(s) and MCA I/O Circuit Card(s) into the respective mounting position(s) of the
Primary and Secondary Power/Distribution and Power Only Bay(s), as required.
Refer to Figure 3-9 and Figure 3-10.
Procedure
1) Open the bay's front door to access the MCA circuit card mounting positions.
2) Connect an approved grounding strap to your wrist. Attach the other end to a
suitable ground.
3) Loosen the two screws securing the circuit card retaining angle, and slide the
retaining angle down.
4) Unpack the MCA circuit card(s) to be installed.
MCA Customer Alarm Relay Circuit Card: P/N 514348.
MCA I/O Circuit Card: P/N 524550.
5) Each MCA circuit card can be installed in any of the circuit card mounting
positions in any bay. Circuit cards are installed in the bay with the component
side facing the left as viewed from the front. Slide the circuit card(s) into its
mounting location, ensuring the rear edge connector is firmly seated.
Note: The recommended method is to populate LMS Input/Output circuit cards
from left to right, and MCA circuit cards from right to left.
Note: If you are using the default MCA Relay Function Channel configurations
and the default MCA Customer Alarm Relay assignments, refer to Figure
4-5 for required card locations.