2-32 Parameter Descriptions
7000-TD002A-EN-P – September 2007
Drive Hardware Parameters
DC Link Inductance [DCLnk Induct pu]
Linear Number: 114
Minimum Value: 0.00 pu
Maximum Value: 10.00 pu
Access Level: Service
Read/Write: Read Only
This parameter displays the per unit dc link inductance calculated from the nameplate link inductance and
the voltage and current ratings of the drive. It is recalculated when any of the parameters affecting its
value is changed. This normal value of this parameter varies based on the drive rectifier type. This
parameter applies for both standard drives and drives with Direct-to-Drive technology. A warning DC Link
Range will be displayed if this parameter is greater than 2.0 per unit or less than the minimum expected
as given by:
For 6-PWM minimum value is 0.55pu
For 18-pulse SCR, minimum value is 0.42pu
For 6-pulse SCR, minimum value if 0.82pu.
Line Reactor pu [Line Reactor pu]
Linear Number: 625
Minimum Value: 0.00 pu
Maximum Value: 1.00 pu
Access Level: Service
Read/Write: Read Only
This parameter displays the per unit ac line reactor value calculated from the parameter Line Reactor and
the voltage and current ratings of the drive. It is recalculated when any of the parameters affecting its
value is changed. Typical value is around 0.1pu.
Line Filter Capacitor [Line Filter Cap]
Linear Number: 133
Minimum Value: 0.00 pu
Maximum Value: 2.00 pu
Access Level: Service
Read/Write: Read Only
This parameter specifies the per unit line filter capacitance for the PWM rectifier. It is calculated from the
capacitor nameplate parameters (total kVAR, frequency and the voltage rating). This parameter is
recalculated when any of the parameters affecting its value is changed. The normal range for this
parameter is 0.35 to 0.55pu. A warning Line Cap Range will be displayed if this parameter is outside the
range.
Motor Filter Capacitor [Motor Filter Cap]
Linear Number: 128
Minimum Value: 0.00 pu
Maximum Value: 2.00 pu
Access Level: Service
Read/Write: Read Only
This parameter specifies the per unit motor filter capacitance calculated from the capacitor nameplate
parameters (total kVAR, frequency and the voltage rating). It is recalculated when any of the parameters
affecting its value are changed. The normal range for this parameter is 0.26 to 0.55pu. A warning Motor
Cap Range will be displayed if this parameter is outside the range.