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Rockwell Automation Publication 2198-UM002E-EN-P - February 2018
Appendix D
Motor Control Feature Support
Frequency Control Methods
The Kinetix 5700 servo drives support three open-loop frequency control
methods. These are the choices:
•
Basic Volts/Hertz
- This method is used in single asynchronous-motor
applications
• Basic Volts/Hertz - Fan Pump
- This method is similar to Basic Volts/
Hertz, but is specifically tailored for fan/pump applications
•
Sensorless Vector with Slip Compensation
- This method is used for
most constant torque applications. Provides excellent starting,
acceleration, and running torque
To configure your induction motor in the Logix Designer application, refer to
Configure Induction-motor Frequency-control Axis Properties
.
Open-loop frequency control is suitable in applications such as conveyors,
pumps, and fans. Features include the following:
• Start Boost and Run Boost
• Electronic motor thermal-overload protection per Class 10
requirements
• Two skip frequencies, in which the drive does not operate
• All three-phase induction motors, suitable for variable speed drive
(VFD) operation, are supported
Table 153 - Motor Specifications
Attribute
Value
Output frequency, max
590 Hz
Pole pairs, max
50
Motor cable length, max
90 m (295 ft)
(1)
(1) Applies to all Kinetix 5700 drives and compatible motors/actuators with Hiperface and Hiperface DSL high-resolution absolute
feedback. For compatible motors/actuators with incremental feedback, 30 m (98 ft) is the maximum cable length.