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 (See W2007 ). 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
|
Command |
Index |
SubIndex |
Data Type |
Units |
Float Scale |
Access |
PDO Mappable |
|---|---|---|---|---|---|---|---|
|
VBUS.UVWTHRESH |
300ah |
03h |
Unsigned16 |
- |
- |
Read/Write |
No |
|
ID |
Instance |
Attribute |
Name |
Data Type |
Access |
User Mappable |
|---|---|---|---|---|---|---|
|
2511 |
1 |
2511 (0x9cf) |
VBUS.UVWTHRESH |
Unsigned16 |
Read/Write |
Yes |
|
Parameter |
PNU |
Data Type |
Access |
Units |
|---|---|---|---|---|
|
VBUS.UVWTHRESH |
2511 |
Unsigned16 |
Read/Write |
- |
