When you start a system design, you are asked if you want to "DRAY ARRAY" or "INPUT WITHOUT DRAWING"

If you choose "DRAW ARRAY" a single array has a limit of 500 panels or less. You can always draw more than one array if you are creating a design for a larger-scale project. If you go over 500 panels for a single array, you will get an error. To get around this, just make the layout area smaller (by drawing a smaller polygon) and click "FILL ARRAY" until the layout is 500 panels or less.

If you choose "INPUT WITHOUT DRAWING" there is no system size limit. You can create one or more arrays of any size.