Vertiv™ NetSure™ Control Unit (NCU) User Manual
NOTE!
Can only be made when the controller is in the "manual control" state. If the controller is set for "automatic" control,
change the “Auto/Manual State” setting first to the “Manual” setting.
• HVSD Limit: Sets the High Voltage Shutdown point for all solar converters.
• Restart on HVSD: Enables or disables the High Voltage Shutdown Restart feature for all solar converters. When enabled,
the following parameters can be set.
HVSD Restart Time: When the High Voltage Shutdown Restart feature is enabled and the output exceeds the high voltage
limit, the solar converters restart after this time period expires.
• Walk-In: Enables or disables the start-up walk-in feature for all solar converters. When enabled, the following parameters
can be set.
Walk- In Time: Sets the start-up walk-in time when the “Walk-In” setting above is set to enabled.
• Sequence Start Interval: Sets the sequence start interval (time period between starting each solar converter in the system).
• Solar Failure Time: The time before a “Solar Communication Failure” alarm occurs. Adjustable from 0 to 7 days with default
setting of 3 days. A “0” setting sets a Solar Communication Failure alarm to occur immediately after the event occurs.
• Solar Converter Trim: Temporarily sets the output voltage for all solar converters when the controller is in Manual mode.
Voltage can be increased or decreased from the existing Float Charge or Equalize Charge setting, depending which mode the
controller was in when set to "Manual". Setting reverts to original when controller is returned to the Auto mode.
• DC On/Off Control: Temporarily turns the DC output on or off for all solar converters when the controller is in Manual mode.
Setting returns to original when controller is returned to the Auto mode.
• Solar Converter LED Control: Temporarily sets whether or not a solar converter’s local power indicator blinks when the
controller is communicating with the solar converter when the controller is in Manual mode. Setting returns to original when
controller is returned to the Auto mode.
• Fan Speed Control: Sets the fan speed for all solar converters.
• Confirm Solar Converter ID: After changing solar converter ID assignments, use this menu item to confirm the change. The
only selection is Yes. Once Yes is selected and confirmed, the ID setting of all solar converters is updated.
• Reset Solar Converter IDs: Resets the solar converter IDs after they have been previously changed and confirmed. The
only selection is Yes. Once Yes is selected and confirmed, the NCU resets the solar converter IDs by reassigning ID numbers.
• Clear Solar Converter Comm Fail: Clears a solar converter communication fail alarm. The only selection is Yes. Once Yes
is selected and confirmed, the alarm clears.
• Clear Solar Converter Lost Alarm: Clears a solar converter lost alarm. The only selection is Yes. Once Yes is selected and
confirmed, the alarm clears.
Battery Test Tab Programmable Parameter Descriptions
• Battery Test Control: Starts or stops battery test.
• AC Fail Test: Enables or disables starting a battery discharge test during an AC input failure condition.
• Constant Current Test: Enables or disables a Constant Current Battery Discharge Test. During this test, the controller
automatically adjusts the rectifiers' output voltage to maintain the battery discharge current at a preset value (Constant
Current Test Current). When enabled, the following parameters can be set.
Constant Current Test Current: Constant current setting for a Constant Current Battery Discharge Test.
To Next Page
