公开(公告)号：US20200259432A1

公开(公告)日：2020-08-13

申请号：US16571231

申请日：2019-09-16

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kunimasa ANDO

IPC: H02P5/747

Abstract: A motor control system includes a motor, and a motor control apparatus including first processing circuitry that, based on a driving state quantity of the motor, controls driving power supplied to the motor, safety request input receiving circuitry through which a safety request signal is input from outside the motor control apparatus, safety cooperation input receiving circuitry through which a safety cooperation signal is input from outside the motor control apparatus, safety cooperation output circuitry through which the motor control apparatus outputs the safety cooperation signal to outside the motor control apparatus, and second processing circuitry that, upon input of at least one signal among the safety request signal and the safety cooperation signal, monitors a relationship between a predetermined motion monitor pattern and the driving state quantity and outputs the safety cooperation signal.

公开(公告)号：US20180175777A1

公开(公告)日：2018-06-21

申请号：US15844867

申请日：2017-12-18

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kunimasa ANDO

IPC: H02P27/08 ,  H02M5/458

CPC classification number: H02P27/08 ,  H02M1/32 ,  H02M5/4585 ,  H02P3/22 ,  H02P2201/07

Abstract: A motor control system includes a motor having an output line, motor control circuitry that includes DC bus lines and a smoothing capacitor between the DC bus lines and converts DC power supplied from outside the motor control circuitry into AC power and supply the AC power to the motor as driving power, and short circuit circuitry that, while the motor control circuitry is not supplying the driving power to the motor, makes a short circuit between the output line of the motor and a negative line of the DC bus lines of the motor control circuitry.