A rotary powder compression molding machine comprising: a frame; a rotary shaft rotatably mounted in the frame; a turret mounted to the rotary shaft; a plurality of dies provided at predetermined intervals in a circumferential direction of the turret; an upper punch and a lower punch retained in positions above and below each of the dies to be movable in a vertical direction; an upper roll and a lower roll configured to bias the upper punch and the lower punch toward each other with tip ends of the upper punch and the lower punch inserted in the die to compress a powder material filled in the die; a designating means configured to designate a molding portion constituted of a set of the die and the upper and lower punches (5, 6) corresponding to the die, the designating means comprising a pressure detecting means configured to detect a pressure applied in the compression of the powder material; a position detecting means configured to detect that the molding portion designated by the designating means has reached a predetermined position; a separating means (22, 22a) including an air feed source, a control valve and an air passage and being configured to separate a designated molded article ejected from the molding portion designated by the designating means from collection of molded articles other than the designated molded article based on a position detection signal output from the position detecting means; a product ejecting portion including a guide member for guiding a molded article to a collecting position and including the air passage; a first passage sensor located in a vicinity of a tip end of the air passage in the guide member, wherein the first passage sensor is configured to output a passage signal when it detects passage of a molded article; a controller including a separation determination means configured to detect an abnormal pressure applied on the powder material, a separation timing means configured to measure a position of the designated molding portion and an actuation verification means configured to verify actuation of the separating means (22, 22a) by determining on the basis of the position detection signal whether the first passage sensor outputs a passage signal at a time when the designated molded article has to pass a detection position of the first passage sensor according to the position detection signal. a frame; a rotary shaft rotatably mounted in the frame; a turret mounted to the rotary shaft; a plurality of dies provided at predetermined intervals in a circumferential direction of the turret; an upper punch and a lower punch retained in positions above and below each of the dies to be movable in a vertical direction; an upper roll and a lower roll configured to bias the upper punch and the lower punch toward each other with tip ends of the upper punch and the lower punch inserted in the die to compress a powder material filled in the die; a designating means configured to designate a molding portion constituted of a set of the die and the upper and lower punches (5, 6) corresponding to the die, the designating means comprising a pressure detecting means configured to detect a pressure applied in the compression of the powder material; a position detecting means configured to detect that the molding portion designated by the designating means has reached a predetermined position; a separating means (22, 22a) including an air feed source, a control valve and an air passage and being configured to separate a designated molded article ejected from the molding portion designated by the designating means from collection of molded articles other than the designated molded article based on a position detection signal output from the position detecting means; a product ejecting portion including a guide member for guiding a molded article to a collecting position and including the air passage; a first passage sensor located in a vicinity of a tip end of the air passage in the guide member, wherein the first passage sensor is configured to output a passage signal when it detects passage of a molded article; a controller including a separation determination means configured to detect an abnormal pressure applied on the powder material, a separation timing means configured to measure a position of the designated molding portion and an actuation verification means configured to verify actuation of the separating means (22, 22a) by determining on the basis of the position detection signal whether the first passage sensor outputs a passage signal at a time when the designated molded article has to pass a detection position of the first passage sensor according to the position detection signal.