| 摘要 |
PURPOSE:To perform the reciprocating conveyance of members quickly, by switching the current supplied to a pulse motor ON and OFF in forward and backward movement. CONSTITUTION:A converter A 3 converts the pulse frequency outputted from a current switching port of a controller to the voltage. A comparator A 4 compares the reference voltage f/V converted with the terminal voltage of a current detection resistance R and controls a driver A 1 so that the pulse motor is in backward driving state or forward driving state, the current value is changed either in going ahead or in going astern by changing over the fre quency of the output pulse from the current switching port. |
