Title:
CONTROLLER OF ACTUATOR
Document Type and Number:
Japanese Patent JPH02197292
Kind Code:
A
Abstract:
PURPOSE: To realize an erroneous operation preventer without increasing the weight or complicating the structure by providing a switch constituted such that a motor is not started even when a power supply input is connected due to abnormality of circuit. CONSTITUTION: Upon occurrence of a power supply abnormality, e.g. open circuit of the line 70 of a valve opening field coil 14, in a field coil 14 or 15, power supply to a motor relay 27 and relay coils 38, 50 is interrupted. When a motor indicator 54 unlights to indicate that a motor valve is in open valve position, the switch 27 is turned manually to open position. Consequently, the armature 12 of the motor is connected on the earth side there with the earth level and the armature 12 can be deenergized surely along with one of the motor coils 14, 15.
Inventors:
ROSU EMU GURANTO
JIYOSEFU DEI DEKARURO
JIYOSEFU DEI DEKARURO
Application Number:
JP22279489A
Publication Date:
August 03, 1990
Filing Date:
August 29, 1989
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP
International Classes:
H02H11/00; H02P7/08; H02P29/00; H02P29/02; (IPC1-7): H02P7/00
Attorney, Agent or Firm:
Fujiya Shiga (1 person outside)