liftach control different?

hello, how is it possible to operate a lift axis: -in stand -without train -with train -without the error in the electronics -without the danger that the axis is moved during travel (neither by the staff nor by technical defective!!) -with tuev etc. -pneumatic please help, constantly hit problems. no matter what ideas you have just bisala brainstorming. tüftel scho bisala but think so completely worked net.