Azbil Corporation

Takuji Abe

Makoto Saruwatari

Hideaki Someya

Hiroaki Narita

In a method for evaluating degradation of a potentiometer, a plurality of evaluation items, from minor to major, are established as evaluation items for degradation in performance prior to failure of a potentiometer. The degradation of the potentiometer in performance of the plurality of evaluation items is evaluated in terms of stages, in a specific sequence.

Potentiometer degradation evaluating method

An electric actuator includes a motor, an electricity storing body, a manual operating unit, a switch and a resetting unit. In a state wherein a controlled element has arrived at a first opening and a supply of power to the motor from the electricity storing body is cut off, the motor and the controlled element are in a non-linked state only while a button is pushed. The switch keeps a supply path of electric power open when the button has been pressed once. The resetting unit closes the switch at a point in time that the controlled element that is driven by the motor arrives at a specific second opening at a time of restoration of the external power supply in a state wherein the non-linked state of the motor and the controlled element by the button has been undone.

Electric actuator

An electric actuator has a motor, an electricity storing body, a switch and a resetting unit. The switch is provided in a supply path of electric power from the electricity storing body to the motor. The switch opens the supply path for electric power from the electricity storing body to the motor, in response to an instruction from an operator. The resetting unit is operated through receiving a supply of electric power from the external power supply when the external power supply has been restored from being cut off. The resetting unit closes the switch that is provided in the supply path of electric power from the electricity storing body to the motor.

An electric actuator has a switch, a setting unit and a resetting unit. The switch is provided in a supply path of electric power from an electricity storing body to a motor. The switch opens and closes the supply path. The setting unit is operated through receiving a supply of electric power from the electricity storing body in response to an instruction from an operator. The setting unit opens the switch provided in the supply path for electric power from the electricity storing body to the motor. The resetting unit is operated through receiving a supply of electric power from an external power supply when the external power supply has been restored from being cut off. The resetting unit closes the switching unit provided in the supply path of electric power from the electricity storing body to the motor.

An electric actuator has a motor, an electricity storing body, a switch, a setting unit, a resetting unit and a setting-off unit. The switch is provided in a supply path for electric power from the electricity storing body to the motor. The switch opens and closes the supply path. The setting unit is operated through receiving a supply of electric power from the electricity storing body in response to an instruction from an operator. The setting unit opens the switch. The resetting unit is operated through r a supply of electric power from the external power supply when the external power supply has been restored from being cut off. The resetting unit closes the switch that is provided in the supply path. The setting-off unit sets off the supply of electric power from the external power supply to the resetting unit after a specific delay time has elapsed.

Growing community of inventors

Tokyo, Japan

Takuji Abe