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UM1M820BNA User Instructions
Issue AH, March 4, 2013 Spec No. 1M820BNA (Model M820B)
Spec No. 1M820DNA (Model M820D)
24 Chapter 2. Operation
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.
3) The "Stop Controller" window opens. Click on the “Stop Controller” button.
4) A Download window opens.
Warning: Never navigate from this web page without first clicking on "Start Controller". If
you do, you will not have web access. A manual system reset is required to
restore web access.
5) Click the “Browse….” button and navigate to the folder where the file is located. Select the file and
then click the “Download” button. Click “Start Controller” to restart the Controller with the
downloaded file installed.
2.5.5 Rebooting the Controller
Local Menu Navigation: Press ENT and ESC at the same time to reset the ACU+ Controller.
WEB Menu Navigation: Maintenance / Restore Factory Defaults / select “Reboot Controller”.
2.5.6 Changing the Local LCD Display Contrast
Local Menu Navigation: Press ENT and UP ARROW or ENT and DOWN ARROW while in the Main
Screen to change the contrast of the LCD display.
WEB Menu Navigation: none.
2.5.7 Disabling the Local Keypad Sound
Local Menu Navigation: Main Menu / Settings / Controller / Keypad Voice.
To disable the keypad sound, set "Keypad Voice" to "Off".
WEB Menu Navigation: none.
2.5.8 Changing the Date
Local Menu Navigation: Main Menu / Settings / Controller / Date.
After selecting Date (by pressing ENT when the cursor is in the Date field), use and to select the year
then press ENT, next use and to select the month then press ENT, and finally use and to select
the day then press ENT.
WEB Menu Navigation: Maintenance / Time Sync.
2.5.9 Changing the Time
Local Menu Navigation: Main Menu / Settings / Controller / Time.
After selecting Time (by pressing ENT when the cursor is in the Time field), use and to select the
hour then press ENT, next use and to select the minute then press ENT, and finally use and to
select the second then press ENT.
WEB Menu Navigation: Maintenance / Time Sync.
2.5.10 Adding, Deleting, and Modifying Users
Local Menu Navigation: none.
WEB Menu Navigation: Refer to “4.7.5 User Information Settings Sub-Menu”.
2.5.11 Assigning Severity Level to Alarms
Local Menu Navigation: Main Menu / Settings / Alarm Setting / Alm Severity.
WEB Menu Navigation: Configuration / Signal Information Modification / select entry from “Query Device
Type” list / select “Alarm Signal” from “Signal Type” list / select entry from “New Level” list / press “Set”.