| 摘要 |
PROBLEM TO BE SOLVED: To sense the slip-off of a controller connector with a cable connector, the insufficient connection of the cable connector with the controller connector the defective contact and cable disconnection, and predict the cable disconnection so as to avoid the heat development by the increase of resistance value generated in an early disconnection state of the cable. SOLUTION: In a device in which connectors 9 and 11 are connected, power is supplied from a controller 10 to a heating coil with built-in joint through a cable 7 and a tube and a joint are welded together by the heat of the heating coil, the connector 11 is provided with terminals 115 and 116 , and the cable 7 is provided with a short circuit section 14 connected with the terminals 115 and 116 by the connector 9 and generating short circuit between the terminals 115 and 116 , and abnormality is sensed by the controller 10 based on whether the short circuit state of the terminals 115 and 116 is or not. |
