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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 39
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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
DI1Alarm
(DI1 Alarm)
Digital input #1 alarm is active.
Check why alarm is active.
…
…
DI7Alarm
(DI7 Alarm)
Digital input #7 alarm is active.
DI8 ESTOP
(DI8 ESTOP)
Digital input #8 alarm is active.
IB Communication Fail
(IB Comm Fail)
ACU+ Interface Board
communications failure.
Check communications cables.
Relay Testing
(Relay Testing)
Relay Test in progress.
--
Testing Relay 1
(Testing Relay 1)
Testing Relay 1 (on IB2 Board).
--
…
…
Testing Relay 8
(Testing Relay 8)
Testing Relay 8 (on IB2 Board).
System Temp1 High 2
(System T1 Hi2)
Temperature sensor #1 sensing
temperature higher than high
temperature threshold 2.
Note: This alarm is not used at this
time.)
System Temp1 High 1
(System T1 Hi1)
Temperature sensor #1 sensing
temperature higher than high
temperature threshold 1.
System Temp1 Low
(System T1 Low)
Temperature sensor #1 sensing
temperature lower than low
temperature threshold.
System Temp2 High 2
(System T2 Hi2)
Temperature sensor #2 sensing
temperature higher than high
temperature threshold 2.
Note: This alarm is not used at this
time.)
System Temp2 High 1
(System T2 Hi1)
Temperature sensor #2 sensing
temperature higher than high
temperature threshold 1.
System Temp2 Low
(System T2 Low)
Temperature sensor #2 sensing
temperature lower than low
temperature threshold.