Vertiv NetSure-48 VDC Installation And User Manual page 25

NOTE!
When setting total rectifier current limit, the set point to each unit is the total set point divided by the number of
units. For example, if the system contains five rectifiers and the current limit is set to 150 amps then each rectifier has a
current limit set point of 30 amps. If one or more rectifiers are removed or fail it will take several seconds for the individual set
points to the remaining rectifiers to be reset. In the example given, if one rectifier is removed the current limit set point will
drop to 120 amps (30 amps times four remaining rectifiers) until the controller can send updated set points to the remaining
rectifiers. This takes a couple communication cycles (several seconds) after which each rectifier would have a new set point
of 37.5 amps for a total of 150 amps. The total current limit of the rectifiers should not be set such that the loss of the
redundant rectifiers will cause this temporary set point to drop below the actual maximum expected load. If batteries are
used on the rectifier output, the batteries should support the load until the current limit set points can be re-established due
to loss of a rectifier.
NCU Start Wizard
For initial startup, you can perform the Start Wizard from the local keypad and display to enter basic programmable parameters in one
session. Refer to the "Start Wizard" section in the NCU Instructions (UM1M830BNA).
Verifying the Configuration File
Your NCU was programmed with a configuration file that sets all adjustable parameters. The version number of the configuration file
can be found on the configuration drawing (C-drawing) that is supplied with your power system documentation, and on a label
located on the NCU. You can verify that the correct configuration file has been loaded into your NCU by performing the following
procedure.
Procedure
1. With the Main Menu displayed, press ESC. A screen displays the NCU name, serial number, IP number, software version, and
hardware version.
2. Press the DOWN key. A screen displays the configuration version number, NCU file system, and MAC address.
3. Press ESC to return to the Main Menu.
Checking Basic System Settings
Navigate through the controller menus and submenus to check system settings. You can adjust any parameter as required. Note
that these settings can also be checked (and changed if required) via the WEB Interface. Refer also to "NCU Start Wizard" on page 19.
NOTE!
Repeatedly press the "ESC" key to return in reverse order level by level from any submenu until the Main Menu
appears.
Procedure
To Select a Sub-Menu:
1.
Press the UP and DOWN keys to highlight the desired sub-menu. Press the ENT key to enter the selected sub-menu.
To Select a User:
2.
To select a User, use the UP and DOWN keys to move the cursor to the Select User field. Press ENT. Use the UP and DOWN
keys to select a User previously programmed into the NCU. Press ENT to select the User. Note that only Users programmed
into the NCU are shown. Users are programmed via the Web Interface. The default User is admin.
3. To Enter a Password:
If a password screen opens, a password must be entered to allow the User to make adjustments. To enter a password, use
the UP and DOWN keys to move the cursor to the Enter Password field. Press ENT. Use the UP and DOWN keys to choose a
character. Press ENT to accept and move to the next character. Continue this process until all characters are entered.
Press ENT again to accept the password. The default password is 640275.
Vertiv™ NetSure™ -48 VDC Bulk Output Rectifier System Installation and User Manual
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