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Explain -500Hz and +500Hz min and max speeds from the HMI shown on ATV61 and ATV71

Issue:
When operating an ATV61 or ATV71 series drive with the speed reference coming from the HMI, there is a minimum speed of -500 and maximum speed of +500 Hz displayed on the bottom of the screen.  What does this mean?

Product Line:
Altivar 61, Altivar 71

Environment:
All Models and serial numbers equipped with VW3A1101 keypad whether mounted directly or remotely, and configured for HMI frequency reference.

Cause:
Minimum and Maximum speeds displayed do not match the Low Speed and High Speed settings as set by the customer.

Resolution:
The minimum and maximum speeds displayed when in HMI Frequency Reference mode are the hard limits of the drive itself.  These do not reflect the Low Speed and High Speed settings made by the customer.   The drive will still obey the Low Speed and High Speed settings as programmed but the display reflects the hard limits of the drive, not the programmed limits.

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