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 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

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

Command

Index

SubIndex

Data Type

Units

Float Scale

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

AXIS1.MOTOR.KE

500bh

13h

Unsigned32

-

1000:1

Read/Write

No

AXIS2.MOTOR.KE

510bh

13h

Unsigned32

-

1000:1

Read/Write

No
EtherNet/IP

Name

ID

Hex

Data Type

Access

Units

AXIS1.MOTOR.KE

6241

1861

Unsigned32

Read Only

-

AXIS2.MOTOR.KE

71777

1186

Unsigned32

Read Only

-
PROFINET

Parameter

PNU

Data Type

Access

Units

AXIS#.MOTOR.KE

6241

Float

Read Only

-