Vertiv™ NetSure™ Control Unit (NCU) User Manual
4.1.10 Other Settings Sub-Menu
• Rect Expansion:
- Inactive: Select this option if this is the only NCU controller in the power system.
- Primary: Select this option if the power system consists of multiple bays with multiple NCU controllers, and this NCU
controller is to be the primary controller. Note that only one (1) NCU controller can be set as the primary controller.
- Secondary: Select this option if the power system consists of multiple bays with multiple NCU controllers, and this NCU
controller is to be a secondary controller.
Address: If “Secondary” is selected, this menu item appears after an automatic reboot. Sets the address of an NCU
controller set as a secondary controller.
NOTE!
When primary or secondary is selected, the NCU will start auto configure. This process will take more than three (3)
minutes.
Primary/Secondary Procedure:
Up to four (4) NCU controllers can be connected together when a power system requires a greater number of rectifiers than
can be controlled by a single NCU controller. One (1) controller is designated as the primary controller, the others as
secondary controllers. The rectifiers controlled by the secondary controllers are designated as RectifierGroup 2 through 4 in
the menus.
NOTE!
Changing the Rectifier Expansion setting may take more than three (3) minutes for the NCU to configure the feature.
1. Connect the NCU controllers in the multiple bays via the RS485 interface.
2. Set one of the NCU controllers as the primary controller via the “Rect Expansion” menu item in the OTHER SETTINGS
menu.
3. Set all other NCU controllers as secondary controllers via the “Rect Expansion” menu item in the OTHER SETTINGS
menu.
4. Set the Address of the NCU controllers set as secondary controllers to 201, 202, or 203 via the “Address” menu item in
the OTHER SETTINGS menu. Note that each secondary controller must be set to a different address.
• Auto Config: Auto configures the controller for the devices connected to it.
• LCD Display Wizard: Selects to run the Start Wizard after the controller is restarted. Refer to the next section and
Figure 3.6.
• Start Wizard Now (see Figure 3.6).
Site Name Sub-Menu
Enter the site name and other site information.
Common Settings Sub-Menu
Date: Sets the date. Refer to “Changing the Date and Time” on page 32 for a procedure to change the date.
Time: Sets the time. Refer to “Changing the Date and Time” on page 32 for a procedure to change the time.
Battery Settings Sub-Menu
Float Voltage: Float Charge output voltage setting.
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