Since the very first Haas control was released there has been a provision for the monitoring of tool (spindle) load with facilities for the operator to set a limit for each tool, found in the Current Commands display and pressing page down until the screen is displayed.
Entering a maximum value would cause the machine to either Alarm, Feedhold or Beep depending on setting 84 Tool Overload Action. This standard control feature can help to prevent machine damage through tool failures, unexpected material differences (cold spots etc.) or programming errors.
However with the release of 9.43 software, this feature was further enhanced with the inclusion of Autofeed – a function that automatically limits the feedrate based on the tool load.
To use this feature, select AUTOFEED in Setting 84 and specify load limits for the tools that will be used. If, during a feed, the tool load exceeds the tool load limit, the AUTOFEED feature will automatically override the feed rate (reduce it) down to the percentage specified by parameter 301 (e.g. 1%) at the rate specified by parameter 300 (e.g. 20% per second.)
If the tool load later falls below 95% of the tool load limit percentage, the AUTOFEED feature will automatically override the feed rate (increase it) back to the feed rate that was in effect at the start of the feed at the rate specified by parameter 299 (e.g. 10% per second.) These automatic adjustments will be made in 0.1 second increments.