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UM1M820BNA User Instructions
Issue AH, March 4, 2013 Spec No. 1M820BNA (Model M820B)
Spec No. 1M820DNA (Model M820D)
98 Chapter 3. Local Display Menus
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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.
Batt Curr Limit: Maximum battery charging current setting. For example, a value of
0.150C10 means that the charging current is limited to 15% of the battery’s nominal
capacity.
Over Curr Lmt: Battery over current alarm setting. For example, a value of 0.300C10
means that when the charging current reaches 30% of the battery’s nominal capacity, an
alarm will be extended.
Auto EQ: Enables or disables the Automatic Equalize Charge feature. When enabled, the
following parameters can be set.
EQ Start Curr: The system is transferred to Equalize Charge mode when battery
charge current increases to this setting. For example, a value of 0.060C10 means that
an Automatic Equalize is started if the battery charge current is greater than 6% of the
battery’s nominal capacity.
EQ Start Cap: The system is transferred to Equalize Charge mode when remaining
battery capacity decreases to this setting.
EQ Stop Curr: When in Equalize Charge mode and the battery charge current
decreases below this setting for the "EQ Stop Delay" time period, the system is
transferred to Float Charge mode. For example, a value of 0.010C10 means that when
the charging current is less than 1% of the battery’s nominal capacity, the system
returns to the Float mode.
EQ Stop Delay: See "EQ Stop Curr" above.
Note: If the power system has been automatically placed in Equalize mode, disabling
Auto EQ will not return the system to Float mode until the current Equalize cycle is
completed. To return immediately to Float mode, navigate as follows: Main Menu /
Manual / Batt Group / “EQ/FLT Control”, and select Float Charge.
Maximum EQ Time: This is the maximum duration, in minutes, that an Automatic Equalize
Charge will last regardless of the other settings.
Cyc EQ: Enables or disables cyclic (scheduled) Equalize charging. When enabled, the
following parameters can be set.
Cyc EQ Interval: Cyclic (scheduled) Equalize charging interval.
Cyc EQ Duration: Cyclic (scheduled) Equalize charging duration.
Test Menu
Menu Navigation: Main Menu / Settings / Battery / Test
Note: For WEB Interface; menu items are found under Device Information / Battery Group /
Settings Tab.
"Test" Parameter Settings:
Test Volt Lmt: System output voltage setting during a battery discharge test.
Test End Volt: This is the “end of test voltage level” for battery discharge tests. A battery
discharge test will end if battery voltage decreases to this setting.
End Test Time: This is the "end of test time period” for battery discharge tests. A battery
discharge test will end if this time period is exceeded.
EndTestCapacity: This is the "end of test remaining battery capacity” for battery discharge
tests. A battery discharge test will end if remaining battery capacity decreases to this
setting. For example, a value of 0.700C10 means that when the discharging current
reaches 70% of the battery’s nominal capacity, the battery test is ended.
RecordThreshold: This setting indicates the interval battery voltage is recorded during a
battery discharge test.