JPH0461434U

JPH0461434U -

Info

Publication number: JPH0461434U
Application number: JP10544890U
Authority: JP
Priority date: 1990-10-05
Filing date: 1990-10-05
Publication date: 1992-05-26

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例によるリレー出力
回路を示す図、第２図は他の実施例によるリレー
出力回路のブロツク図、第３図は第２図の実施例
の具体的回路図、第４図はフエールセーフＡＮＤ
ゲートを表わす図、第５図は第３図の回路の動作
を示すタイムチヤート、第６図は従来のリレー出
力回路を示す図である。６……主リレー、１２……補助リレー、１６，
２４……接点、３０……ヒユーズ。 FIG. 1 is a diagram showing a relay output circuit according to one embodiment of the invention, FIG. 2 is a block diagram of a relay output circuit according to another embodiment, and FIG. 3 is a specific circuit diagram of the embodiment of FIG. Figure 4 shows fail-safe AND
5 is a time chart showing the operation of the circuit of FIG. 3, and FIG. 6 is a diagram showing a conventional relay output circuit. 6... Main relay, 12... Auxiliary relay, 16,
24...Contact, 30...Fuse.

Claims

[Scope of Claim for Utility Model Registration] (1) A main relay having contacts, an auxiliary relay having contacts connected in series to the main relay, and a non-contact disconnection means connected in parallel to the contacts of the auxiliary relay. relay output circuit. (2) A main relay, control, which is provided in the power supply path to the load and has a first contact that closes only when the coil is energized, and a second contact that is always closed when the coil is not energized. A main relay control circuit that controls the energization state of the main relay coil based on the signal, a third contact connected in series with the main relay that closes only when the coil is energized, and always when the coil is not energized. an auxiliary relay having a fourth contact that is closed; an auxiliary relay control circuit that controls the excitation state of the coil of the auxiliary relay based on a control signal; A relay output circuit equipped with a non-contact disconnection means having a disconnection rating. (3) In the relay output circuit of claim 2, the second contact of the main relay is closed, the fourth contact of the auxiliary relay is closed, and the non-contacting or disconnecting means is not in the disconnected state. A normality detection circuit is installed that detects this and outputs a normal signal, and even if both the main relay control circuit and the auxiliary relay control circuit receive a control signal, if a normal signal is not input, the coil will not be excited. A relay output circuit characterized by being configured as follows. (4) The relay output circuit according to claim 1, 2 or 3, wherein the non-contact breaking or breaking means is a fuse.