Vertiv NetSure-48 VDC Installation And User Manual page 28

Vertiv™ NetSure™ -48 VDC Bulk Output Rectifier System Installation and User Manual
NOTE!
A "Rect Group All Rect No Response" alarm may activate briefly.
b) Requirement: NCU "Critical/Major" alarm indicator goes from red to off.
Requirement: Press ESC repeatedly to return to the Main screen. NCU displays "No Alarm".
c)
d) Requirement: All external alarms deactivate.
Checking Rectifier Alarm
Procedure
1. Verify system is operating and no alarms are present.
2. Verify the NCU displays the Main Menu. If not, press ESC repeatedly to return to the Main Menu.
3. Pull one rectifier module half way out of the shelf. To do this, first loosen the captive fastener securing the top of the latch
mechanism to the front of the rectifier module. Pull the top of the latch mechanism away from the rectifier module (this will
retract the latch mechanism located on the underside of the rectifier module).
a) Requirement: An audible alarm sounds. Alarm will be silenced in Requirement c.
Requirement: NCU "Critical/Major" alarm indicator goes from off to red.
b)
c) Requirement: NCU displays "Alarm".
To see the specific alarm(s), navigate to the Alarm Menu and press ENT. The "Active Alarm" screen lists one major
alarm. "Rect (###) Comm Fail Major" is displayed.
Requirement: External "Rectifier" (Relay 8) and "Major" (Relay 2) alarms activate.
d)
NOTE!
If the system is equipped with only one rectifier, skip step 4.
4. Pull a second rectifier module half way out of the shelf, as described in Step 3.
a) Requirement: An audible alarm sounds. The alarm will cancel in Requirement c.
b) Requirement: NCU "Critical/Major" alarm indicator stays red.
c) Requirement: Press ESC repeatedly to return to the Main screen. NCU displays "Alarm".
To see the specific alarm(s), navigate to the Alarm Menu and press ENT. The Active Alarm screen lists one critical and
two major alarms. "Rect Group Multi-Rect Fail Critical" is displayed. Use arrow keys to scroll through the list of alarms.
"Rect ### Comm Fail Major" is displayed for each removed rectifier.
Requirement: External "Rectifier" (Relay 8) and "Major" (Relay 2) alarms remain in alarm state and "Critical" (Relay 1)
d)
alarm activates.
5. Reinstall the rectifier module(s).
a) Requirement: "Power" indicator on subject rectifier(s) goes from off to green.
b) Requirement: NCU "Critical/Major" alarm indicator goes from red to off.
c) Requirement: Press ESC repeatedly to return to the Main screen. NCU displays "No Alarm".
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