Hi holger.cleve
Using the N.I.N.A. plugin with the UPAS is really easy, you just need to download the Three Point Polar Alignment plugin from within N.I.N.A, afterwards you need to enable the "Use Avalon Polar Alignment System" option and click on the "Test connect button".
We suggest to enable also the "Do automated adjustment" option to allow the system automatically calculate and correct the Azimuth Backlash.
After the connection check the Gear Ratio and Speed value, they must be set as follow:
Azimuth:
Speed = 1000, GearRatio = 2
Altitude:Speed = 700, GearRatio = 22
Attached and below you'll find two screenshot that is going to help you to properly connect and configure the plugin for the UPAS.
Best regards