UPS 120, UPS 150, UPS 250 and UPS 300 Uninterruptible Power Supplies Caterpillar


Telemetry Parameters

Usage:

UPS 250 APZ
From the top level of the display, you can scroll through the logs and the telemetry data. Scrolling is accomplished with the soft keys. The keys are located at the bottom of the display and the right side of the display.

Table 1
Three-Phase Telemetry 
"Input Line Voltage A, B, and C"  Measurement of the input voltages from phases "A", "B", and "C" to neutral. 
"Current In Phases A, B, and C"  Input current to the system, measured for each phase A, B, and C. 
"Input Power"  Calculated value that is based on the input phase to phase voltages and the input currents. 
"Input kVA Phases A, B, and C"  Calculated value that is based on the input phase to neutral voltages and the input currents. 
"Output Line Voltage Phases A, B, and C"  Measurement of output voltages from phases A, B, and C to neutral. 
"Current Out Phases A, B, and C"  Output current from the system, measured for each phase A, B, and C. 
"Output Power Phases A, B, and C"  Calculated value that is based on the output phase to neutral voltages and the output currents. 
"Output kVA Phases A, B, and C"  Calculated value that is based on the output phase to neutral voltages and the output currents. 

Table 2
Single-Phase Telemetry Points 
"Frequency"  Measurement of the frequency as seen on phase C. 
"Output Power"  Sum of the output power on phases A, B, and C. 
"Total Output kVA"  Sum of the output kVA on phases A, B, and C. 
"Output Power Factor"  Calculated based on the output phase to neutral voltages and the output currents. 
"Input Frequency"  Measurement of the input frequency as seen on Phase C. 
"Total Input Power"  Sum of the input power on phases A, B, and C. 
"Total Input kVA"  Sum of the input kVA on phases A, B, and C. 
"Input Power Factor"  Calculated based on the input phase to neutral voltages and the input currents.  
"Cabinet Temp"  Air temperature measurement taken in the cabinet. 
"Air Inlet Temp"  Air temperature taken at the air inlet to the cabinet. 
"Static Switch Temp"  Temperature of the static switch heat sink. 
"Positive DC Bus Voltage"  Positive DC bus voltage produced by the input rectifier. 
"Negative DC Bus Voltage"  Negative DC bus voltage produced by the input rectifier. 
"Tachometer"  Flywheel tachometer. 
"Percent Energy"  Calculated value that represents the usable energy stored in the flywheel. 
"Vacuum Gauge"  Measurement indicates the vacuum level in the flywheel housing. 
"Top Field Coil Current"  Measurement indicates the current through the top field coil of the flywheel. 
"Bottom Field Coil Current"  Measurement indicates the current through the bottom field coil of the flywheel. 
"Bottom Bearing Force"  Calculated value that is based on the top and bottom flux density measurements. This value represents the amount of weight unloaded from the bottom bearing by the field coils. 
"Lateral Vibration"  Measurement is the lateral vibration measured by the flywheel accelerometers. 
"Axial Vibration"  Measurement is the axial vibration measured by the flywheel accelerometers. 
"Top Field Coil Temp"  Measured temperature of the top field coil in the flywheel housing. 
"Bottom Field Coil Temp"  Measured temperature of the bottom field coil in the flywheel housing. 
"Armature Temp"  Measured temperature of the main armature in the flywheel housing. 
"Top Field Coil IGBT Temp"  Measured temperature of the top field coil "IGBT". 
"Bottom Field Coil IGBT Temp"  Measured temperature of the bottom field coil "IGBT". 
"Top Bearing Temp"  Measured temperature of the top flywheel bearing. 
"Bottom Bearing Temp"  Measured temperature of the bottom flywheel bearing. 
"RPS Advance"  Value describes the calibration setting of the commutation sensor. The commutation sensor is used to measure the rotor position. 

Table 3
Control Setpoints 
"Field Current Setpoint"  Current setpoint for the bottom field. 
"Rotor Speed Setpoint"  Desired flywheel speed. 
"Motor Current Limit"  Upper limit for the amount of current used in the motor armature. 
"Discharge FC @7000 Setpoint"  Sets the amplitude of the field current profile during discharge. 
"Voltage Ref. Setpoint"  Target for the output voltage of the machine. 
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