Safety indicator system and method for metal forming machines

摘要

The specification discloses the operation of a multistate safety indicator on a press device having a plurality of run switches. Circuitry is provided for placing the indicator in an on state when the press is ready to be energized. Circuitry is responsive to actuation of one of the run switches for placing the indicator in an intermittent flashing state for a predetermined timed interval. Circuitry is responsive to the actuation of the remainder of the run switches during the predetermined time interval for placing the indicator in the on state to indicate operation of the press. Circuitry is also provided to place the indicator in the off state if the remainder of the run switches are not actuated during the predetermined time interval.