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Installation Instructions IM581127000
Spec. No. 581127000 (Model 710NPBA) Issue AB, March 22, 2012
Chapter 5. Installing the Modules and Initially Starting the System Page 103
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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.
Note that if the system is equipped with only two
converters, “AllConvCommFail” is displayed.
d) Requirement: External “Relay 2 Major Summary Alarm” and “Relay 10
Converter Major Alarm” (requires EIB Interface Board to be installed in the
system) remain active. External “Relay 1 Critical Summary Alarm” and
“Relay 9 Converter Critical Alarm” (requires EIB Interface Board to be
installed in the system) activate.
5) Reinstall the converter(s). Refer to the previous procedure Installing the
Converters.
a) Requirement: “Power” indicator on subject converter(s) goes from off to
green.
b) Requirement: ACU+ “Critical/Major” alarm indicator goes from red to off.
c) Requirement: Press ESC repeatedly to return to the Main screen. ACU+
displays “No Alm”.
d) Requirement: All external alarms deactivate.
Checking System Under Voltage Alarm 1 and Under Voltage Alarm 2 Procedure
1) Verify system is operating and no alarms are present.
2) Verify the ACU+ displays the Main screen. If not, press ESC repeatedly to return
to the Main screen.
3) Record the system voltage displayed on the ACU+ Main screen.
4) Press ENT to go to the Main Menu. Navigate to and select “Settings” (ENT).
5) If a password screen opens, a password must be entered to allow the User to
make adjustments. If a password was previously entered and has not yet timed
out, skip this step and proceed to step 3). Otherwise, to enter a password, with
the cursor at the User Name field (default is “Admin”), press the down arrow key
to move cursor down to the password line. Press ENT. “0” is highlighted. Press
the up arrow key once to change the “0” to”1” (default password is “1”), then
press ENT twice. (Note: If you have been assigned a unique User Name and
password, follow this procedure to enter these.)
6) With the Settings menu screen displayed, navigate to “Power System” (ENT) /
“General” (ENT) / “24V Under Volt1”. Record the displayed voltage setpoint.
7) Press ENT. Use the up or down arrow keys to adjust the “24V Under Volt1”
value to one volt above the system voltage recorded in step 3). Press ENT.
a) Requirement: An audible alarm sounds. The alarm will be silenced in
Requirement c).
b) Requirement: ACU+ “Critical/Major” alarm indicator goes from off to red.
c) Requirement: Press ESC repeatedly to return to the Main screen. ACU+
displays “Alarm”.
To see the specific alarm, press ENT to display the Main Menu.
Navigate as follows: “Status” (ENT) / “Active Alarm” (ENT).
The Active Alarm screen lists one critical alarm.
Press ENT. “Power System 24V Under Volt1 Critical” is displayed.
d) Requirement: External “Relay 1 Critical Summary Alarm” and “Relay 4
Under Voltage 1 Alarm” activate.