2-4 Parameter Descriptions
7000-TD002A-EN-P – September 2007
Inverter Output Volt [Inv Output Volt]
Linear Number: 761
Minimum Value: 0.000 pu
Maximum Value: 2.000 pu
Access Level: Service
Read/Write: Read Only
This parameter is the measured inverter output voltage in per unit using the Voltage Sensing Board
(VSB). This is the voltage across the motor filter capacitor. For non-ESP applications, the motor voltage
will be equal to the inverter output voltage. However for ESP applications, the inverter output voltage will
be higher than the motor voltage to compensate the voltage drop in the cable. A new parameter Surface
Voltage (#760) displays the inverter output voltage in Volts.
Motor Voltage pu [Motor Voltage pu]
Linear Number: 554
Minimum Value: 0.000 pu
Maximum Value: 2.000 pu
Access Level: Service
Read/Write: Read Only
This parameter displays the voltage across the motor terminals in per unit. For non-ESP applications, the
motor voltage will be equal to the inverter output voltage. However for ESP applications the motor voltage
is estimated from the measured output voltage Inv Output Volt (761) and compensating for the cable
resistance drop using measured motor current Motor Current pu (555).
Line Current pu [Line Current pu]
Linear Number: 122
Minimum Value: 0.000 pu
Maximum Value: 4.000 pu
Access Level: Service
Read/Write: Read Only
This parameter displays the measured value of line current in per-unit. It is measured using Current
Transformers (CT’s) installed in two phases. The drive internally reconstructs the line current in the third
phase by assuming that the sum of the line currents in a three phase system is zero. The line current is
the sum of the current flowing into the rectifier bridge and the current flowing into the line filter capacitor.
Motor Current pu [Motor Current pu]
Linear Number: 555
Minimum Value: 0.000 pu
Maximum Value: 4.000 pu
Access Level: Service
Read/Write: Read Only
This parameter displays the measured value of motor current in per-unit. It is measured using Hall Effect
Current Sensors (HECS) installed in two phases. The drive internally reconstructs the motor current in the
third phase by assuming that the sum of the motor currents in a three phase system is zero.
Rectifier Heat Sink Temp °C [Rec HSink Temp C]
Linear Number: 254
Minimum Value: -40.0 C
Maximum Value: 100.0 C
Access Level: Monitor
Read/Write: Read Only
This parameter specifies the rectifier heat sink temperature in degrees Celsius.
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