Rockwell Automation SP600 AC Drive User Manual Version 1.0 - Manual (Page 32)

2-18 SP600 AC Drive User Manual
Caution should be taken to understand the effects and restrictions
when applying the drive to extended motor lead length applications.
Proper cable type, motor and drive selection is required to minimize
the potential risks.
2.4.26 Economizer Mode
Economizer mode consists of operating the drive in sensorless
vector control mode with an energy saving function (E-SVC). When
the drive is in this mode and operating at steady state output
frequency, the output voltage is automatically adjusted as the load is
increased or decreased. This is done so that minimum current is
supplied to the motor thereby optimizing its efficiency. By adjusting
the output voltage, the flux producing current is reduced, but only if
the total drive output current does not exceed 75% of motor rated
current. In this mode the flux current is not allowed to be less than
50% of the selected flux current parameter value.
2.4.27 Fan Curve
When Torque Perf Mode (53) is set to Fan/Pump V/Hz the
relationship between frequency and voltage is a square function
where the voltage is proportional to frequency. The fan curve
provides the option to generate voltage that is a function of the
stator frequency squared up to the motor nameplate frequency.
Above base frequency, the voltage is a linear function of frequency.
At low speed, the fan curve can be offset by the Run Boost (70)
parameter to provide necessary starting torque.
2.5 CE Conformity
Some SP600 drive models contain input line filters and DC bus
chokes. These components are essential to meet CE certification
requirements.
These SP600 drives are CE compatible, but internal or external
filters will be required to meet the standards outlined in section
2.5.1.
Conformity with the Low Voltage (LV) Directive and Electromagnetic
Compatibility (EMC) Directive has been demonstrated using
harmonized European Norm (EN) standards published in the
Official Journal of the European Communities. The SP600 AC drive
complies with the EN standards listed below when installed
according to the user manual.
CE Declarations of Conformity are available online at:
http://www.reliance.com/certification.
Important: SP600 AC drives rated for 575 VAC input do not
comply with CE standards.