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UM1M820BNA User Instructions
Issue AH, March 4, 2013 Spec No. 1M820BNA (Model M820B)
Spec No. 1M820DNA (Model M820D)
94 Chapter 3. Local Display Menus
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
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.
2) Set one of the ACU+ Controllers as the Primary Controller via the Rect Expansion
menu item in the Power System "General" Parameters menu.
3) Set all other ACU+ Controllers as Secondary Controllers via the Rect Expansion
menu item in the Power System "General" Parameters menu.
4) Set the Address of the ACU+ Controllers set as Secondary Controllers to 201, 202,
or 203 via the Address (Slave) menu item in the Power System "General"
Parameters menu. Note that each Secondary Controller must be set to a different
address.
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Address (Slave): Sets the address of an ACU+ Controller set as a Secondary Controller.
Over Voltage 1: Sets the Over Voltage 1 alarm point.
Over Voltage 2: Sets the Over Voltage 2 alarm point.
Under Voltage 1: Sets the Under Voltage 1 alarm point.
Under Voltage 2: Sets the Under Voltage 2 alarm point.
Fail Safe: When enabled, sets the relay designated as the "critical summary" alarm relay
to operate in the "fail safe" mode. In this mode, the relay is energized during normal
operation and de-energized for an alarm condition.
Hybrid Mode: Refer to “1.3.11 Hybrid Control Function” for more information on the Hybrid
Mode.
Disable / Fixed Daily / Capacity: Sets the Hybrid Mode or disables the function.
DG Run Overtemp: Enables or disables diesel generator operation in an over
temperature condition.
DG Run Time: Sets the diesel generator run time.
DG Used: Sets the diesel generator(s) to be utilized.
DI for Grid: Sets the digital input monitoring the grid.
DOD: Sets the Depth of Discharge.
Dsch Duration: Sets the discharge duration.
Start Dsch Time: Sets the start time for discharge.
High Load Set: Sets the high load point.
Equal StartTime: Sets the start time for equalizing.
DG Alarm Delay: Sets the diesel generator alarm delay.
Fail Safe: Tells the Controller the fail safe mode of the relay contacts connected to
start the generator(s) (either normally open or normally close).
Contactor Mode: Enables or disables the Power Split feature (“master control” indicates
the ACU+ system operates normally and “slave control” indicates the ACU+ system is a
slave system of the existing legacy system).
See also “2.7 Power Split Feature”.
Relay Test: Sets the Relay Test feature to Automatic, Individual, or disables the feature.
Relay Test Time: Sets the Relay Test Time for the Automatic Relay Test feature.
HighLoadLevel1: Sets the High Load Level 1 alarm.
HighLoadLevel2: Sets the High Load Level 2 alarm.
DI1 through D18 Alarm State: Sets the alarm state for the digital input (high or low).
Amb Temp Sensor: Sets the temperature sensor which displays the ambient temperature
on the Web Interface’s Homepage. Note that this temperature sensor MUST be set as an