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.