Vertiv™ NetSure™ Control Unit (NCU) User Manual
Turn Off Delay: When the Energy Optimization feature determines a rectifier can be switched off, this is the time delay
before the rectifier is turned off.
• Clear Cycle Alarm: Resets the ECO Cycle Alarm. The only selection is Yes. Once Yes is selected and confirmed, the alarm
resets.
LVD Tab Programmable Parameter Descriptions
LVD Unit
• LVD 1: Enables or disables LVD 1. When enabled, the following parameters can be set.
LVD 1 Mode: Sets LVD 1 to disconnect on a voltage or time setpoint.
LVD 1 Disconnect Voltage: LVD 1 low voltage disconnect setting (when LVD set for voltage)
LVD 1 Reconnect Voltage: LVD 1 reconnect setting (when LVD set for voltage).
LVD 1 Reconnect Delay: Delay time period until LVD 1 reconnects once voltage recovers (when LVD set for voltage).
LVD 1 Time: The time period before LVD 1 disconnection once an AC fail condition occurs ( when LVD set for time).
LVD 1 Dependency: Select if LVD 1 can disconnect only if LVD2 has disconnected, or none.
LVD 1 High Temp Disconnect: Enables or disables the High Temperature 1 Disconnect feature. This feature causes LVD 1
contactors to open (disconnect) if a high temperature event occurs. (See "HTD Point" and “HTD Reconnect Point” under the
“System Tab Programmable Parameter Descriptions” starting on page 141.)
• LVD 2: Enables or disables LVD 2. When enabled, the following parameters can be set.
LVD 2 Mode: Sets LVD 2 to disconnect on a voltage or time setpoint.
LVD 2 Disconnect Voltage: LVD 2 low voltage disconnect setting (when LVD set for voltage)
LVD 2 Reconnect Voltage: LVD 2 reconnect setting (when LVD set for voltage).
LVD 2 Reconnect Delay: Delay time period until LVD 2 reconnects once voltage recovers (when LVD set for voltage).
LVD 2 Time: The time period before LVD 2 disconnection once an AC fail condition occurs ( when LVD set for time).
LVD 2 Dependency: Select if LVD 2 can disconnect only if LVD 1 has disconnected, or none.
LVD 2 High Temp Disconnect: Enables or disables the High Temperature 2 Disconnect feature. This feature causes LVD 2
contactors to open (disconnect) if a high temperature event occurs. (See "HTD Point" and “HTD Reconnect Point” under the
“System Tab Programmable Parameter Descriptions” starting on page 141.)
• LVD Contactor Type: Select the type of LVD Contactor. This setting should not be changed.
• LVD 1 Control: Temporarily connects or disconnects LVD 1 when the controller is in Manual mode. Setting returns to
original when controller is returned to the Auto mode.
• LVD 2 Control: Temporarily connects or disconnects LVD 2 when the controller is in Manual mode. Setting returns to
original when controller is returned to the Auto mode.
SMDU 1 LVD
• LVD 1: Enables or disables LVD 1. When enabled, the following parameters can be set.
LVD 1 Mode: Sets LVD 1 to disconnect on a voltage or time setpoint.
To Next Page
Loading...
