Vertiv™ NetSure™ Control Unit (NCU) User Manual
• Calculate Battery Current: Selects whether or not the NCU calculates the battery current in the case of no battery shunt
(load shunt required).
• Temp Comp Sensor: Select "None" for no temperature compensation, or the temperature probe [System Temp1, System
Temp2, System Temp3, IB2-1 Temp1, IB2-1 Temp2, IB2-2 Temp1, IB2-2 Temp2, EIB-1 Temp1, EIB-1 Temp2, EIB-2 Temp1, EIB-2
Temp2, SMTemp1 Temp1, …, SMTemp1 Temp8, …, SMTemp8 Temp1, …, SMTemp8 Temp8], SMDUE1 Temp1, …, SMDUE1
Temp10, SMDUE2 Temp1, …, SMDUE2 Temp10] sensing battery temperature for temperature compensation. You can also
select Maximum or Average which takes the maximum or average reading of the temperature probes [any of System Temp1,
System Temp2, System Temp3, IB2-1 Temp1, IB2-1 Temp2, IB2-2 Temp1, IB2-2 Temp2, EIB-1 Temp1, EIB-1 Temp2, EIB-2
Temp1, EIB-2 Temp2, SMTemp1 Temp1, …, SMTemp1 Temp8, …, SMTemp8 Temp1, …, SMTemp8 Temp8], SMDUE1 Temp1, …,
SMDUE1 Temp10, SMDUE2 Temp1, …, SMDUE2 Temp10] set as battery temperature probes. When set, the following
parameters can also be set.
Comp Temp High 2: Sets the Compensation Temperature High 2 alarm point.
Comp Temp High 1: Sets the Compensation Temperature High 1 alarm point.
Comp Temp Low: Sets the Compensation Temperature Low alarm point.
Temp Comp Off When: Temperature compensation shuts off and the system returns to float if “All Probes Fail” or “Any
Probe Fails”. “All Probes Fail” is the default setting.
Temp Comp Center: Sets the temperature at which the system operates at normal voltage levels.
Temp Comp Coefficient (slope): Sets the temperature compensation slope or rate of change per °C above or below the
"Temperature Compensation Center" setting. This value is expressed in millivolt per °C per string (mV/°C/str). For example,
for a rate of change of 72 mV/°C/str in a 24-cell 48V nominal battery string, the rate of change is 3 mV per cell.
Temp Comp Threshold Enabled: When enabled, turns on temperature compensation at the “Temp for Temp Comp On”
setting and turns off temperature compensation (the system returns to float) at the “Temp for Temp Comp Off” setting.
“Disabled” is the default setting. When enabled, the following parameters can also be set
Temp for Temp Comp Off: See “Temp Comp Threshold Enabled” above. “55 °C” is the default setting.
Temp for Temp Comp On: See “Temp Comp Threshold Enabled” above. “50 °C” is the default setting.
Temp Comp Voltage Clamp: Enables or disables the temperature compensation voltage clamp feature.
Temp Comp Max Voltage: Upper voltage limit where battery temperature compensation clamps the voltage.
Temp Comp Min Voltage: Lower voltage limit where battery temperature compensation clamps the voltage.
• BTRM Temp Sensor: Sets the BTRM (Battery Thermal Runaway Management) temperature sensor. Note that this
temperature sensor MUST be set as a battery temperature sensor. Select "None", or the temperature probe [System Temp1,
System Temp2, System Temp3, IB2-1 Temp1, IB2-1 Temp2, IB2-2 Temp1, IB2-2 Temp2, EIB-1 Temp1, EIB-1 Temp2, EIB-2
Temp1, EIB-2 Temp2, SMTemp1 Temp1, …, SMTemp1 Temp8, …, SMTemp8 Temp1, …, SMTemp8 Temp8], SMDUE1 Temp1, …,
SMDUE1 Temp10, SMDUE2 Temp1, …, SMDUE2 Temp10]. You can also select Maximum or Average which takes the
maximum or average reading of the temperature probes [any of System Temp1, System Temp2, System Temp3, IB2-1 Temp1,
IB2-1 Temp2, IB2-2 Temp1, IB2-2 Temp2, EIB-1 Temp1, EIB-1 Temp2, EIB-2 Temp1, EIB-2 Temp2, SMTemp1 Temp1, …,
SMTemp1 Temp8, …, SMTemp8 Temp1, …, SMTemp8 Temp8], SMDUE1 Temp1, …, SMDUE1 Temp10, SMDUE2 Temp1, …,
SMDUE2 Temp10] set as battery temperature probes. When set, the following parameters can also be set.
NOTE!
The BTRM sensor is the sensor which is used for the High Temperature Disconnect (HTD) Feature.