Hi All

I been getting a Arrow 2 (500) Simodrive 611 up and running
Had few issues. Got help from a few people on here.
Had to send board to Micacron for new battery and re flash.
Had a local repair guy JLU Automation do some work on the power module
Had Global Electronics repair the workstation
JLU is going o look into the spindle drive
For some reason when I go up in rpm all good as soon as i go down in rpm the spindle shuts down alarm 39-148
Any ideas as to possible cause
Also the little red on or off switches on the purple cables connectors not exactly sure of the settings
at the moment left to right OFF OFF ON and ON on the DP board on top of Acramatic 2100
These guys had a fourth axis that they removed it is OFF

Thanks