| 摘要 |
PROBLEM TO BE SOLVED: To set a most suitable current value in response to load without directly detecting the load applied to a pulse motor. SOLUTION: A pulse motor M1 drives an aligning means for aligning sheet- like materials carried and loaded on a load-carrying part. A motor current setting circuit 82 sets a current value for the pulse motor M1. The number of sheet-like materials carried and loaded on the load-carrying part is detected by a the number of sheet materials detecting means SE11. The motor current value is switched in response to the change in the number of sheet-like materials detected. Thus, even when a means for directly detecting a loaded condition is not provided, the pulse motor can be driven by a most-suitable current value which corresponds to torque required for the motor rotary shaft, and thus there is no need for wasteful power consumption because a suitable motor-current value is set even during the period of light load. |
