NetSure
™
Control Unit (NCU)
User Manual, UM1M830BNA
Spec. No: 1M830BNA, 1M830DNA Code: UM1M830BNA
Model No: M830B, M830D Revision M, May 12, 2017
Delta Voltage: The offset voltage that the power system designated as “System A” in a "Power Split" configuration is set to. It is
suggested to leave this value at the default (0.5 volts).
Outgoing Alarms Blocked:
o Normal: Alarms are processed normally.
o Blocked: Forces the alarm relays in the "off" state and blocks alarms from changing the relay state.
EStop / EShutdown
o Disabled: Disables the Emergency Stop and Emergency Shutdown functions.
o EStop: Enables the Emergency Stop function.
o EShutdown: Enables the Emergency Shutdown function.
Audible Alarm
o Off: Disables the audible alarm.
o On: When a new alarm occurs, the audible alarm sounds. Press any key to silence the audible alarm.
o 3 min / 10 min / 1 hr / 4 hrs: When a new alarm occurs, the audible alarm sounds. The audible alarm automatically silences
after the selected time period.
Auto/Manual State:
o Auto: The controller automatically controls the power system.
o Manual: A User can manually change certain power system control settings. When you return to Auto Mode, any settings
changed in Manual Mode are returned to their previous setting (setting before being placed in Manual Mode). This
provides a convenient means of making temporary adjustment changes for testing purposes.
Manual Mode Time Limit: Time delay before returning to automatic control after being set for manual control. A "0" setting
disables the "Manual Mode Time Limit" feature and the controller MUST be manually set to Auto control after being set to
Manual control.
Maintenance Cycle: Enables or disables the maintenance cycle timer. When enabled, the following parameter can be set.
Maintenance Cycle Time: The maintenance cycle time is the number of days before a maintenance alarm is issued. To reset the
maintenance timer and clear the maintenance alarm, clear the maintenance run time (Clear Maintenance Run Time menu item,
see also “Clearing the Maintenance Alarm” on page 29).
Clear Maintenance Run Time: In manual mode, the only selection for "Clear Maintenance Run Time" is Yes. Once Yes is selected
and confirmed, the Power System's Maintenance Run Time log is cleared.
LCD Rotation: Sets the rotation of the text in the menus (allowing the controller to be mounted in different orientations).
o 0 deg: Display will be in the horizontal position (M830B only).
o 90 deg: Display will be in the vertical position (NCU controller mounted 90 deg clockwise) (M830B only).
o Big Screen: Setting for M830D only.
Solar Mode: Sets solar mode as Disabled, RECT-SOLAR, or SOLAR.
o Disabled: Disables the solar mode function.
o RECT-SOLAR: If you have both rectifiers and solar converters in the system, set Solar Mode to “RECT-SOLAR”. In the
Battery Settings tab, also set the “Float Charge Voltage (Solar)” parameter to the desired float setting. The parameter
“Float Charge Voltage (Rect)” setting MUST be set 0.3 V lower than the “Float Charge Voltage (Solar)” parameter setting
for solar converters to operate properly.
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