| 摘要 |
<p>PROBLEM TO BE SOLVED: To ease maintenance after emergency stop by controlling an electric drive system before an electric power is interrupted by a power source breaker when an emergency stop switch is turned on and damping an electric power supplied from a main power source. SOLUTION: When an emergency stop EMO is operated, a contact 21 to hold the EMO state by a relay 8 becomes open, and even when a contact 3 of the emergency stop switch becomes closed by an elastic material such as a spring, etc., fitted to an EMO switch 1, no electric power is supplied to an electromagnetic relay 9 for power source on/off contact 10 for cutting off electric power, and a relay 8 for holding the EMO state during operation of EMO. The contact 21 for controlling the relay 8 is still open, and the EMO state is held until a reset switch 7 in the EMO state becomes closed. To reset this state, the reset switch 7 is closed.</p> |
