What are +Inhibit and Inhibit?
a. Some amplifiers have directional inhibits in addition to the master inhibit. The directional inhibits inhibit motion in one direction while allowing the amplifier to drive in the other direction. The directional inhibits are typically connected to contact switches on the end-stops of a machine. If movement reaches the end-of-travel, the contact switch will activate the appropriate directional inhibit and stop the motion into the end-stop. Since the directional inhibit only inhibits motion in one direction the amplifier will still be able to pull itself away from the end-of-travel. This configuration protects the amplifier and motor from continuing to drive into the end-stop and causing damage.