Application Guide

Section 5876 Installation Instructions
Issue AT, April 26, 2013 Spec. No. 582140000 (Models 802
NLDB, 802NLEB and 802NL-B)
Page 4-18 Chapter 4. Making Electrical Connections
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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.
MCA Relay
Function
Channel #
Alarm
Name
Alarm
Configuration
Assigned to
Relay #…
installed in
Slot #…
of any Bay
7 Very Low Voltage Alarm System Voltage is Very Low 1 6 and 2
8 High Voltage Alarm #2
System High Voltage
#2 Alarm
2 6 and 2
9 Audible Alarm Contacts
See Relay Function
Channel 25
3 6 and 2
10 Test / Equalize Indication Test/Equalize Mode is Active 4 6 and 2
11 Rectifier Fail Alarm
1 PCU Failure Any Type, 2+
PCU Failures Any Type, No
PCU in Inventory (installed)
5 6 and 2
12 Rectifier Major Alarm
2+ PCU Failures 'Major'
Type, No PCU in Inventory
(installed)
6 6 and 2
13 Rectifier Minor Alarm
1 PCU Failure 'Minor' Type,
2+ PCU Failures 'Minor'
Type, 1 PCU Failure 'Major'
Type
1 5 and 1
14 Over Current Alarm
Total Distribution Load Alarm,
Distribution Group A Load
Alarm, Distribution Group B
Load Alarm
2 5 and 1
15 AC Major Alarm
AC Power is Off to All PCUs,
AC Power is Off to 2+ PCUs
3 5 and 1
16 AC Minor Alarm AC Power is Off to 1 PCU 4 5 and 1
17 MCA Fail Alarm
Controller (MCA) Failure,
Controller Initializing
5 5 and 1
18 Undefined -- 6 5 and 1
19 Undefined -- 1 4
20 Undefined -- 2 4
21 Undefined -- 3 4
22 Undefined -- 4 4
23 Undefined -- 5 4
Table 4-1A (cont'd from previous page, cont'd on next page)
Default MCA Relay Function Channel Configurations and
Default MCA Customer Alarm Relay Assignments