| 摘要 |
<p>PURPOSE:To prevent nonconformity resulting from malfunction of a machine control switch by forcibly blocking the opening operation control and closing operation control of a controlled machine by the simple switching operation of a monitoring panel. CONSTITUTION:An operator first of all operates machine selection switches 1S on a monitoring panel to select the operation control lock of a controlled machine 1. The operator then operates closing lock switches to indicate the closing operation lock against the controlled machine 1. Machine control switches 1C are thereby closingly operated, and when a contact 1C1 is closed, no closing signal is sent to the controlled machine 1 is fixed closing contact 7b is in opening motion, so that the controlled machine 1 is subjected to closing operation control locking.</p> |
