Title:
CONTROLLER FOR AC ELEVATOR
Document Type and Number:
Japanese Patent JPS58154395
Kind Code:
A
Abstract:
PURPOSE:To prevent a trouble form occurring by charging smoothing condenser through a resistor when a power source is applied and generating an abnormal signal when the charging time is shorter than the prescribed value. CONSTITUTION:When a power source switch 1 is closed, a smoothing condenser 3 is charged through a resistor 12. A charging time measuring circuit 14 measures the charging time of the condenser 3. A control circuit 5 monitors the charging time, and outputs an abnormal signal when the charging time is shorter than the prescribed time. This abnormal signal stops the ordinary operation of a cage 9 or generates an alarm with an indicator lamp or the like, thereby exchanging the condenser 3 before the cage 9 cannot serve in normal state.
Inventors:
YOSHIDA MASAYUKI
NOMURA MASAMI
IKEJIMA HIROYUKI
NOMURA MASAMI
IKEJIMA HIROYUKI
Application Number:
JP3706482A
Publication Date:
September 13, 1983
Filing Date:
March 09, 1982
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02P27/06; B66B1/24; B66B1/28; B66B1/30; B66B5/02; G01R31/00; H02H7/16; H02M7/06; H02M7/12; H02M7/515; H02P21/34; H02P23/00; H02P23/07; H02P23/24; (IPC1-7): B66B1/28; B66B5/02; H02M7/515; H02P7/62
Domestic Patent References:
| JPS55134733U | 1980-09-25 | |||
| JPS54149858A | 1979-11-24 | |||
| JP44003553A |
Attorney, Agent or Firm:
Masuo Oiwa
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