COUNTER FOR PAPER OR THE LIKE

摘要

PURPOSE:To accurately carry sheets independently of the kinds and states of paper or the like by constituting a driving motor of one AC motor and forming an AC motor control part for controlling the rotational speed of the AC motor. CONSTITUTION:A program corresponding to a set speed is read out from a ROM 6 based on a set input based upon the operation of a ten-key input part 3 and applied to a speed setting part in the AC motor control part 7. The speed setting part 7a converts a program into an analog signal and applies the analog signal to a comparing amplifier part 7d. A rotational speed signal voltage of the AC motor 7b functioning as a carrying motor which is detected by a speed detecting part 7c is impressed on the amplifier part 7e and compares with a speed set voltage obtained from the speed setting part 7a and the compared output is applied to a voltage control part 7e. The voltage control part 7e impresses a voltage corresponding to the output from the amplifier part 7d on the AC motor 7b and the AC motor 7b is driven equally to the set rotational speed.