Emerson 581127000, Installation Instructions Manual

Page: 112 / 120

IM581127000 Installation Instructions
Issue AB, March 22, 2012 Spec. No. 581127000 (Model 710
NPBA
)
Page 104 Chapter 5. Installing the Modules and Initially Starting the System
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8)
Without readjusting the “24V Under Volt1” setpoint, press the
ESC key
repeatedly to return to the Main Menu. Then navigate as follows: Settings (ENT)
/
“
Power System
” (ENT) / “
General
” (ENT)
/
“
24V Under Volt2
”. Record the
displayed voltage setpoint.
9) Press ENT . Use the up or down arrow
keys to adjust the “24V Under Volt2”
value to one-half volt above the system voltage recorded in step 3). Press ENT .
a) Requirement: An audible alarm sounds. Alarm will be silenced in
Requirement c).
b) Requirement:
ACU+ “Critical/Major” alarm indicator stays 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 two critical alarm.
Press
ENT .
“
Power System 24V Under Volt2 Critical
” is displayed.
Use arrow keys to scroll through the list of alarms.
“
Power System 24V Under Volt1 Critical
” is displayed.
d) Requirement: External
“Relay 1 Critical Summary Alarm” and “Relay 4
Under Voltage 1 Alarm
” remain active. External “Relay 5 Under Voltage 2
Alarm
” activates.
10) Press ESC
repeatedly to return to the Main Menu. Navigate to “
Settings
” (ENT)
/ “
Power System
” (ENT) / “
General
” (ENT) / “
24V Under Volt2
”.
11) Press ENT . Use the up or down arrow
keys to adjust the “24V Under Volt2”
setting to the value recorded in step 8). Press ENT .
12) Use the up or down arrow
keys to scroll up to “
24V Under Volt1
”.
13) Press ENT . Use the up or down arrow
keys to adjust the “24V Under Volt1”
setting to the value recorded in step 6). Press ENT .
a) Requirement:
ACU+ “Critical/Major” alarm indicator goes from red to off.
b) Requirement: Press ESC repeatedly to return to the Main screen. ACU+
displays “
No Alm
”.
c) Requirement: All external alarms deactivate.
Checking System Over Voltage Alarm 1 and Over 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.)