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AssigneeYamatake Corporation
InventorsMakoto Saruwatari, Hiroaki Narita
Estimating the term…
An electric actuator is provided having the same configuration whether used as an ordinary electric actuator or as an electric actuator having an emergency shutoff function. A relay connector is provided in an electric actuator. When a module for supplying power during a power failure is connected, a first drive output signal generated by a motor drive circuit is relayed to the module and a motor power switching circuit is provided in the module. When the AC power supply does not fail, the first drive output signal sent from the electric actuator is selected; when the AC power supply fails, the second drive output signal generated by the motor drive circuit is selected and is sent to the AC motor of the electric actuator, via the relay connector.
An electric actuator comprising a motor, the motor being responsive to a first signal generated internal to the electric actuator when primary power is being supplied to the electric actuator and to a second signal generated external to the electric actuator when primary power is removed from the electric actuator.
An electric actuator, comprising a motor responsive, in a first mode, to a first signal generated internal to the electric actuator and, in a second mode, to a second signal generated external to the electric actuator.
A module capable of being detachably connected to an electric actuator to provide the electric actuator with a shutoff function without reconfiguration of the electric actuator.
A module for supplying power to an electric actuator, comprising:
An electric actuator system, comprising:
An electric actuator system, comprising:
A method for providing an electric actuator with a shutoff function, the method comprising the steps of:
Dependencies are inferred from the claim text.