AXIS#.FIELDWEAKENING.VBUSMARGIN

Description

AXIS#.FIELDWEAKENING.VBUSMARGIN determines the field-weakening-loop’s threshold voltage with respect to the bus voltage in [%]. By default, this value is set to 95%, meaning if the magnitude of the motor-voltage vector tries to go above 95% of bus voltage, the field weakening algorithm activates. Once activated, it maintains the motor-voltage vector magnitude at 95% of bus voltage. It applies whatever d-axis current necessary to reduce the induced back-emf-voltage of the motor to create the commanded q-axis current.

  • Setting this value to higher than 95% means having less voltage margin for the voltage regulation but results in higher voltage utilization.
  • Setting this value to lower than 95% means having higher voltage margin for the voltage regulation but results in lower voltage utilization.

Versions

Action Version Notes
Implemented 02-06-00-000

 

General Information

Type

Read/Write

Units

%

Range

0 to 100%

Default Value

95

Data Type

Integer

Stored in Non-Volatile Memory

Yes

Fieldbus Information

EtherCAT CoE and CANopen

Command

Index

SubIndex

Data Type

Units

Float Scale

Access

PDO Mappable

AXIS1.FIELDWEAKENING.VBUSMARGIN

5019h

03h

Signed32

-

-

Read/Write

No

AXIS2.FIELDWEAKENING.VBUSMARGIN

5119h

03h

Signed32

-

-

Read/Write

No

EtherNet/IP

ID

Instance

Attribute

Name

Data Type

Access

User Mappable

7303

1

7303 (0x1c87)

AXIS1.FIELDWEAKENING.VBUSMARGIN

Signed32

Read/Write

Yes

72839

2

7303 (0x1c87)

AXIS2.FIELDWEAKENING.VBUSMARGIN

Signed32

Read/Write

Yes

PROFINET

Parameter

PNU

Data Type

Access

Units

AXIS#.FIELDWEAKENING.VBUSMARGIN

7303

Signed32

Read/Write

-