- Studio 5000 Logix Designer
- Tasks, programs, and routines
- Add-On Instructions
- Controller Organizer
- Logical Organizer
- Alarms
- Tag-based alarms
- Tag Editor and Data Monitor
- Configure settings for Tag Editor and Data Monitor
- Equipment phases
- Equipment Sequences
- Equipment Sequence Diagrams
- Ladder Editor
- Structured Text Editor
- Sequential Function Chart Editor
- Define the steps of an SFC process
- PlantPAx instruction properties
- Controller Properties
- Editing Controller Properties
- Controller Security
- Source Protection
- License Source Protection for Routines and Add-On Instructions
- Module Information
- 1756 ControlLogix I/O Modules
- Instruction Set
DriveUndervoltageFault
Applies to: Servo Drive axes.
DriveUndervoltageFault is a Boolean attribute. It is set when drive DC bus voltage is below the predefined operating limits for the bus.
DriveUndervoltageFault is an unrecoverable fault that will shut down all drive axes. In the event of a DriveUndervoltageFault, check the DC Bus power source (e.g., blown fuses, brown out, open contactor, transformer failure, etc.) and execute a Fault Reset (MAFR) instruction.
The occurrence of a DriveUndervoltageFault sets bit #25 of the DriveFault attribute, the PhysicalAxisFault attribute and bit #0 of the AxisFault attribute.
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