NetSure
™
Control Unit (NCU)
User Manual, UM1M830BNA
Spec. No: 1M830BNA, 1M830DNA Code: UM1M830BNA
Model No: M830B, M830D Revision M, May 12, 2017
EIB-1 Temp1 (bat), EIB-1 Temp2 (bat), SMTemp1 Temp1 (bat), …, SMTemp1 Temp8 (bat), SMTemp8 Temp1 (bat), …,
SMTemp8 Temp8 (bat)]. You can also select Maximum or Average which takes the maximum or average reading of the
temperature probes [any of System Temp1 (bat), System Temp2 (bat), System Temp3 (bat), IB2-1 Temp1 (bat), IB2-1 Temp2
(bat), EIB-1 Temp1 (bat), EIB-1 Temp2 (bat), SMTemp1 Temp1 (bat), …, SMTemp1 Temp8 (bat), SMTemp8 Temp1 (bat), …,
SMTemp8 Temp8 (bat)] set as ambient temperature probes.
Ambient Temp High2: Sets the Ambient Temperature High 2 alarm point.
Ambient Temp High1: Sets the Ambient Temperature High 1 alarm point.
Ambient Temp Low: Sets the Ambient Temperature Low alarm point.
Fail Safe Mode: When enabled, sets the relay designated as the "Critical Summary" alarm relay to operate in the "fail safe" mode.
In this mode, the relay is energized during normal operation and de-energized for an alarm condition.
Rectifier Expansion:
o Inactive: Select this option if this is the only NCU controller in the power system.
o Primary: Select this option if the power system consists of multiple bays with multiple NCU controllers and this controller is
to be the primary controller. Note that only one (1) NCU controller can be set as the primary controller.
NOTE: When primary is selected, the NCU will start auto configure. This process will take more than three (3) minutes.
o Secondary: Select this option if the power system consists of multiple bays with multiple NCU controllers and this
controller is to be a secondary controller.
ALERT! DO NOT set the controller to Secondary from the Web Interface. You will not be able to log into the
controller after it automatically reboots into secondary mode. Controllers to be designated as secondary
controllers need to be set locally via the local keypad and display.
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 Rectifier Group 2 through 4
in the menus.
NOTE: Changing the Rectifier Expansion setting may take more than 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.
3. Set all other NCU controllers as secondary controllers.
ALERT! DO NOT set the controller to Secondary from the Web Interface. You will not be able to log into the
controller after it automatically reboots into secondary mode. Controllers to be designated as secondary
controllers need to be set locally via the local keypad and display.
4. Set the address of the NCU controllers set as secondary controllers to 201, 202, or 203. Note that each secondary
controller must be set to a different address.
Power Split Mode: Enables or disables the power split feature ("disabled" indicates the NCU system operates normally and
"enabled" indicates the NCU system is in Power Split Mode). See “Power Split Feature” on page 6 and “Power Split Feature” on
page 32.
Power Split Current Limit Value: Current limit point for power system designated as “System A” in a "Power Split" configuration.
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