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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 45
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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
Master Equalize
(Master EQ)
In slave mode, the slave unit starts
equalize charging with the master unit.
--
Master Battery Test
(Master Bat Test)
In slave mode, the slave unit starts the
test with the master unit.
--
Discharge Current Imbalance
(Dsch Curr Imb)
Battery distribution current imbalance
alarm.
The currents from two groups of
batteries are not equal. Check the
batteries.
Abnormal Battery Current
(Abnl Batt Curr)
The equalize charging current
exceeds the alarm setting.
Check the alarm setting.
Temperature Compensation
Active
(TempComp Active)
Battery charge temperature
compensation is active.
--
Battery Current
Limit Active
(Batt Curr Limit)
Battery is in current limit.
--
Bad Battery
(Bad Battery)
Battery test fails.
Check the batteries.
Battery Discharge
(Battery Disch)
Battery is discharging.
A battery test is active (the discharge
test will stop automatically). There is a
mains failure (check that it is not
caused by open AC input circuit
breaker). The system load is higher
than rectifier capacity, causing the
batteries to discharge (install
additional rectifiers).
Battery Test Fail
(BatteryTestFail)
Battery test fails.
Check the batteries.
Comp Temp High2
(Comp Temp High2)
Compensation temperature sensor
sensing temperature higher than high
temperature threshold 2.
Check why temperature is high or low.
Comp Temp High1
(Comp Temp High1)
Compensation temperature sensor
sensing temperature higher than high
temperature threshold 1.
Comp Temp Low
(Comp Temp Low)
Compensation temperature sensor
sensing temperature lower than low
temperature threshold.
Compensation Sensor Fault
(CompTempFail)
Temperature Compensation
temperature sensor failure.
Replace temperature sensor.