AXIS#.MOTOR.KE

Description

AXIS#.MOTOR.KE is the back EMF constant for the motor. The back EMF constant defines how much voltage is generated at the motors coils. The relationship between AXIS#.MOTOR.KE and speed is described by the following equation:

Coil Voltage = AXIS#.MOTOR.KE * AXIS#.VL.FB

AXIS#.VL.FB is in units of krpm for rotary motors.

The maximum speed for interior permanent magnet motors (IPM) is determined by AXIS#.MOTOR.KE and VBUS.VALUE. An overspeed fault is generated if AXIS#.MOTOR.TYPE  is set to 6 (IPM) and AXIS#.VL.FB * AXIS#.MOTOR.KE exceeds VBUS.VALUE.


  • This parameter is automatically configured for Kollmorgen motors when MOTOR.AUTOSET=1.

  • This parameter is required to be configured for AXIS#.MOTOR.TYPE = 6

Context

For more information see Motor.

Versions

Action Version Notes
Implemented 02-00-00-000

General Information

Type

Read/Write

Units

Vpeak/krpm for Rotary Motors

Range

0 to 100,000

Default Value

20

Data Type

Float

See Also

N/A

Stored in Non Volatile Memory

Yes

Variants Supported

All variants are supported.

Fieldbus Information

FieldbusClosed A Fieldbus is an industrial network system for real-time distributed control (e.g. CAN or Profibus). It is a way of connecting instruments in a plant design Parameter Index Sub-Index Data Type Float Scale Units Access PDOClosed PDO is a type of protocol frame used in some fieldbuses. A PDO contains one or more object dictionary entries, which define the application data transferred between devices. Mappable
EtherCATClosed ***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs COE and CANopen AXIS1.MOTOR.KE 0x500B 0x13 UDINT 1000:1 - RW False
AXIS2.MOTOR.KE 0x510B 0x13 UDINT 1000:1 - RW False