发明名称 |
KONTROLLGERÄT. |
摘要 |
An apparatus monitors an a.c. motor (12), a door (14) operated by the motor, a frequency converter (16) for supplying electric power to the motor (12), and a control and signal-processing means (32) which causes the frequency converter (16) to control the door in accordance with a desired movement. The movement of the door is continously detected. The control and signal-processing means (32) compares the desired movement of the door with the detected movement, in order to emit an alarm signal (L) when the difference is too considerable. A switch means (28) thus blocks the power supply to the motor (12). A sensing means (31) senses whether the power supply to the motor (12) is blocked. The alarm signal (L) is repeatedly emitted in order to establish a possible malfunction of the switch means (28). |
申请公布号 |
AT126563(T) |
申请公布日期 |
1995.09.15 |
申请号 |
AT19920901818T |
申请日期 |
1991.12.20 |
申请人 |
NOMAFA AB |
发明人 |
LARSSON, HAKAN;ELIASSON, JAN-ERIK;BERNHARDSSON, STURE;NILSSON, GOERAN |
分类号 |
E05F15/10;E06B9/82;E06B9/84;E06B9/88;G05B19/4062;H02H7/093;H02P27/06;(IPC1-7):E05F15/20 |
主分类号 |
E05F15/10 |
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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