Frequency Control Methods - Allen-Bradley Kinetix 5700 User Manual

Appendix E Motor Control Feature Support

Frequency Control Methods

406
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 184 - Motor Specifications
Attribute
Output frequency, max
Pole pairs, max
Motor cable length, max
(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.
Rockwell Automation Publication 2198-UM002G-EN-P - February 2019
on
Value
590 Hz
50
(1)
90 m (295 ft)
page 232.