Parameter Descriptions 2-33
7000-TD002A-EN-P – September 2007
Drive VSB Gain [Drive VSB Gain]
Linear Number: 648
Minimum Value: 0.0 V/V
Maximum Value: 6553.5 V/V
Access Level: Service
Read/Write: Read Only
This parameter represents the ratio between the motor and line voltages at medium voltage level to the
corresponding voltages sampled by the drive control software. It includes the gain of the resistor divider
network on the Voltage Sensing Board and the circuitry for signal processing on the Analog Control
Board. The voltage measured on the Analog Control Boards multiplied by this parameter will give the
value at medium voltage level.
Drive Voltage Sensing Board Tap [Drive VSB Tap]
Linear Number: 649
Access Level: Service
Read/Write: Read Only
This parameter specifies the tap setting of all drive Voltage Sensing Boards. Based on the Rated Line
Voltage (18) and Rectifier Type (153) parameters, the drive knows which tap is used on the VSB. There
are 4 taps labeled A, B, C, and D. The following table shows the tap settings and gains for different input
voltage to the drive:
Rated Line Voltage (18) Drive VSB Tap (649) Drive VSB Gain (648)
100-1450 D 311.3
1450-2500 C 533.4
2500-4800 B 1021.8
4800-7200 A 1554.7
Input filter Cut Off Frequency [InpFilCutOffFreq]
Linear Number: 192
Minimum Value: 0.0
Maximum Value: 100.0
Access Level: Service
Read/Write: Read Only
This parameter displays the corner frequency in per unit of the input LC filter used in PWM rectifier drives.
It is determined from parameters Line Filter Cap (133) and Input Impedance (140). Multiply the value by
Rated Line Freq (17) to get the value in Hz.
Drive Model [Drive Model]
Linear Number: 176
Default Value: B Frame
Access Level: Service
Read/Write: Read/Write when Stopped
This parameter specifies the PF7000 Model Type, or Drive Type. There are two specific Air-cooled
drives: the ‘A’ Frame and the ‘B’ Frame. The ‘B’ Frame is the standard drive, and the ‘A’ Frame is a smaller
version used for limited horsepower applications. There is also a liquid-cooled version of the drive which
is the C-Frame. The D-Frame is reserved for future use, and will be used for parallel drive applications.
B Frame ‘B’ Frame PowerFlex 7000 (standard)
C Frame ‘C’ Frame PowerFlex 7000 Liquid-Cooled
A Frame ‘A’ Frame PowerFlex 7000 (limited HP/kW)
D Frame Future Use – Parallel PowerFlex 7000 drives
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