| 摘要 |
PURPOSE:To promptly complete the start of a group of motors by incorporating by- pass circuits between two flicker bus bars in a crossed way wherein a control power source is directly supplied to the next motor by skipping by-passed motors. CONSTITUTION:When a start push-button 1 is pressed, a relay 3 and a flicker relay 4 are energized to close contacts 3b and 4a a coil 43 for closing a latch relay is energized. A contact 43a is closed by the above procedure to energize a contact 8 for the first motor to start the first motor. A contact 8b at the next stage is simultaneously closed. Next, the contacts 4a and 4b are opened and closed respectively after the flicker period time of the flicker relay 4 to energize a coil 44 for closing a latch relay. When the first motor is by-passed, a contact 16 is opened and contacts 16' and 20' are also switched to connect a control power source to a coil for closing a latch relay at the next stage. |
