JPS61156492U

JPS61156492U -

Info

Publication number: JPS61156492U
Application number: JP3908685U
Authority: JP
Priority date: 1985-03-18
Filing date: 1985-03-18
Publication date: 1986-09-27

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す図、第２図
は電動機の温度変化を示す図、第３図は従来の電
動機再起動制限回路を示す図である。Ｘａは接点、Ｔ_１は第１のタイマー、ｔ_１は第
１の限時接点、Ｙａは接点、Ｔ_２は第２のタイマ
ー、ｔ_２は第２の限時接点、Ｒは補助リレーであ
る。なお、各図中同一符号は、同一又は相当部分
を示す。 FIG. 1 is a diagram showing an embodiment of this invention, FIG. 2 is a diagram showing temperature changes in a motor, and FIG. 3 is a diagram showing a conventional motor restart limiting circuit. Xa is a contact, T ₁ is a first timer, t ₁ is a first time contact, Ya is a contact, T ₂ is a second timer, t ₂ is a second time contact, and R is an auxiliary relay. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Claims for Utility Model Registration] Stop state indicating means that assumes a first state when the electric motor is operating and a second state when the motor is stopped. A first time-limiting means that performs a time-limited operation when the stop state indicating means is in the second state, and changes the state of the first time-limiting contact after a first predetermined time has elapsed. Operating state indicating means takes a first state when the electric motor is stopped and takes a second state when the electric motor is running. A second time limit means that performs a time limit operation when the operating state indicating means is in the second state, and changes the state of the second time limit contact after a second predetermined time has elapsed. A relay for canceling start-up restrictions that is activated by a change in either the first or second time-limited contact. An electric motor restart limit circuit characterized by comprising: