| 摘要 |
PURPOSE:To enable the title device to quickly perform safety operations when a fault occurs by quickly discovering abnormality and distinguishing normal operation from faulty operation. CONSTITUTION:The driving current of a main motor 24 is detected after converting the current into a voltage through series resistors 40 and the voltage is outputted to a CPU 21 after the voltage is converted into a digital signal by means of an A/D converter 42. The CPU 21 compares the voltage value and output value of the motor 24 at the time of its rated input current and, when the output value exceeds the voltage value, a display panel 36 displays an overload. |
