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User Instructions UM1M820BNA
Spec No. 1M820BNA (Model M820B) Issue AH, March 4, 2013
Spec No. 1M820DNA (Model M820D)
Chapter 2. Operation 65
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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.
Table 4
Full Alarm Name - WEB
(Abbreviated
Alarm Name - LCD)
Alarm Description
Action to Correct
High Frequency Input Alarm
(Hi Freq In Alm)
Input frequency above high frequency
alarm threshold.
--
Low Frequency Input Alarm
(Low Freq In Alm)
Input frequency below low frequency
alarm threshold.
--
SMIO Failure
(SMIO Fail)
SM-IO board failure.
Replace the board.
Testing Relay 1
(Testing Relay 1)
Testing Relay 1.
--
Testing Relay 2
(Testing Relay 2)
Testing Relay 2.
Testing Relay 3
(Testing Relay 3)
Testing Relay 3.
LargeDU AC Distribution Group Alarms (Large Distribution Unit must be present in system)
(LargeDUACDist)
Mains Failure
(Mains Failure)
Commercial AC power failure.
--
LargeDU AC Distribution Alarms (Large Distribution Unit must be present in system)
(AC Distributi)
Mains 1 Failure
(Mains 1 Fail)
AC input 1 power failure.
--
Mains 2 Failure
(Mains 2 Fail)
AC input 2 power failure.
--
Mains 3 Failure
(Mains 3 Fail)
AC input 3 power failure.
--
Mains 1 Uab/Ua Failure
(M1 Uab/Ua Fail)
No AC input voltage between Line A
and Line B of input 1.
--
Mains 1 Ubc/Ub Failure
(M1 Ubc/Ub Fail)
No AC input voltage between Line B
and Line C of input 1.
--
Mains 1 Uca/Uc Failure
(M1 Uca/Uc Fail)
No AC input voltage between Line C
and Line A of input 1.
--
Mains 2 Uab/Ua Failure
(M2 Uab/Ua Fail)
No AC input voltage between Line A
and Line B of input 2.
--
Mains 2 Ubc/Ub Failure
(M2 Ubc/Ub Fail)
No AC input voltage between Line B
and Line C of input 2.
--
Mains 2 Uca/Uc Failure
(M2 Uca/Uc Fail)
No AC input voltage between Line C
and Line A of input 2.
--