Quad motors spin up when armed

i am a newbie to pixhawk and using ground control software ,so my questions my seem very basic to this group, hopes that not problem,
just setup a pixhawk 2.4 FC on a DIY s500 frame, with px4 firmware so far all seems fine , but the issue i am having is the motors start spinning after arming , can this be changed so they don’t spin until throttle is raised.

thanks tony

Please don’t double post, answered here: Pixhawk quad motors spinup after arming