| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a motor control unit having protection functions capable of avoiding alarm stop with simple configurations. <P>SOLUTION: The motor control unit receives a command or a starting signal from a controller, controls a motor for driving various kinds of machines, and outputs an operation completion signal to the controller. The motor control unit observes or estimates an effective load rate or a physical quantity for temperature of at least one of the motor control unit, the motor, and the machine. When determining that there is a high possibility of an overload the motor control unit receives the next command or starting signal from the controller, and then performs an overload avoidance operation for lengthening the standby time up to the output of an operation completion signal to the controller. <P>COPYRIGHT: (C)2011,JPO&INPIT |
