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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

Fieldbus Parameter Index Sub-Index Data Type Float Scale Units Access PDO Mappable
EtherCAT COE and CANopen VBUS.UVWTHRESH 0x300A 0x3 UINT - - RW False

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