Vertiv
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NetSure 502NGFB Installation Manual (Section 6009)
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Rev. Z
73
Checking System Under Voltage Alarm 1 and Under Voltage Alarm 2
NOTE!
Depending on your system settings, you may get a conflicting set point message as you attempt
to change the alarm set points in the below procedure. See “Adjustment Range Restrictions” under
“Local Display Menus” in the ACU+ Controller User Manual (UM1M820BNA) for details.
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. Select “Settings” (ENT).
5.
If a password screen opens, a password must be entered to allow user to make adjustments. If the
password was previously entered and has not yet timed out, skip this step and proceed to step 6.
Otherwise, to enter the password, with the cursor at the user name (default is “Admin”), press the DOWN
key to move cursor down to the password line. Press ENT. “0” is displayed. Press the UP 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 your personal information.
)
6.
With the Settings menu screen displayed, navigate to “Power System” (ENT) / “General” (ENT) / “Under
Voltage 1”. Record the displayed voltage setpoint.
7.
Press the Enter (ENT) key; then use the UP or DOWN keys to adjust the “Under Voltage 1” value 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
Under Voltage 1 Critical” is displayed.
d)
Requirement
: External “DC Under Voltage 1” (Relay 4) and “Critical” (Relay 1) alarms activate.
8.
Without readjusting the “Under Voltage 1” setpoint, press the ESC key repeatedly to return to the Main
Menu. Then navigate as follows: Settings (ENT) / “Power System” (ENT) / “General” (ENT) / Under
Voltage 2. Record the displayed voltage setpoint.
9.
Press the Enter (ENT) key; then use the UP or DOWN keys to adjust the “Under Voltage 2” value 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 alarms. Press ENT. “Power System
Содержание NetSure 502NGFB Series
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