VBUS.UVWTHRESH

Description

This parameter is the DC bus undervoltage warning threshold. When the measured DC bus voltage falls below the threshold, an undervoltage fault is thrown for each axis.

Examples

Usage

The drive configures the default value for this parameter based on power electronics ratings.

When the measured DC bus voltage VBUS.VALUE is less than VBUS.UVWTHRESH, the drive reports Warning 2007: Bus under voltage. When VBUS.VALUE is greater than VBUS.UVWTHRESH, the warning is removed.

Code

The following example demonstrates the DC bus undervoltage warning check. When the bus voltage is greater than the warning threshold, the undervoltage warning is not reported.

--> VBUS.UVWTHRESH 100
--> VBUS.UVWTHRESH
100 [Vdc]
--> VBUS.VALUE
162.297 [Vdc]
--> DRV.WARNINGS

No warnings active

When VBUS.VALUE is less than VBUS.UVWTHRESH, the warning is reported on each axis.

--> VBUS.VALUE
96.895 [Vdc]
--> DRV.WARNINGS
1-2007: Warning: Bus under voltage.
2-2007: Warning: Bus under voltage.

Context

For more information on DC bus voltage protection, refer to Power View and Regeneration.

Versions

Action	Version	Notes
Implemented	02-00-00-000

General Information

Type	Read/Write
Units	Vdc
Range	0 to 900 Vdc
Default Value	Dependent on drive model
Data Type	Integer
See also	VBUS.UVMODE, VBUS.UVTHRESH, VBUS.VALUE
Stored in Non Volatile Memory	Yes

Variants Supported

All variants are supported.

Fieldbus Information

FieldbusA 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	PDO Mappable
EtherCATEtherCAT 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	VBUS.UVWTHRESH	0x300A	0x3	UINT	-	-	RW	False