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 ***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	PDO 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.FIELDWEAKENING.VBUSMARGIN	5019h	03h	Signed32	-	-	Read/Write	No
AXIS2.FIELDWEAKENING.VBUSMARGIN	5119h	03h	Signed32	-	-	Read/Write	No

EtherNet/IP

Name	ID	Hex	Data Type	Access	Units
AXIS1.FIELDWEAKENING.VBUSMARGIN	7303	1C87	Signed32	Read/Write	-
AXIS2.FIELDWEAKENING.VBUSMARGIN	72839	11C8	Signed32	Read/Write	-

PROFINET

Parameter	PNU	Data Type	Access	Units
AXIS#.FIELDWEAKENING.VBUSMARGIN	7303	Signed32	Read/Write	-