发明名称 |
Solenoid control and safety circuit system and method |
摘要 |
A solenoid control and safety circuit suitable for use in connection with contact start, plasma-arc torches. The system monitors a voltage to determine when to open an air control solenoid as part of a contact starting process. If a proper voltage is sensed, a gas solenoid is opened to allow airflow to separate the contact starting elements. The system also includes a circuit that monitors a gas pressure switch to determine whether sufficient pressure exists to separate the contact start elements after a contact start process has been initiated. The circuit removes power if it senses insufficient pressure. Also disclosed is a circuit that monitors a differential voltage between the electrode and the tip to determine if the elements remain in contact after airflow has been provided to the torch head.
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申请公布号 |
US6670572(B2) |
申请公布日期 |
2003.12.30 |
申请号 |
US20020090212 |
申请日期 |
2002.03.04 |
申请人 |
THERMAL DYNAMICS CORPORATION |
发明人 |
NORRIS STEPHEN W.;TATHAM DAVID A.;HEWETT ROGER W. |
分类号 |
H05H1/36;(IPC1-7):B23K10/00 |
主分类号 |
H05H1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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