JPH02670U

JPH02670U -

Info

Publication number: JPH02670U
Application number: JP7844888U
Authority: JP
Priority date: 1988-06-14
Filing date: 1988-06-14
Publication date: 1990-01-05

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案のリレー制御回路
の試験装置の１実施例を示し、第１図は結線図、
第２図ａ，ｂは一部の外観の正面図及び右側面図
、第３図は全体の外観の正面図、第４図及び第５
図は従来例の結線図及び外観斜視図である。Ａ，Ｂ……接続端子、１，４，５……第１、第
２、第３ダイオード、２……限流抵抗、３……フ
オトダイオード、６，７……常開接点、８……リ
レー制御回路、２５，２７，２９……主、補助、
リセツトリレー、２６，３７……限流抵抗、２８
，３２……第１、第２常開接点、３０，３１……
第１、第２切換接点、３３……常閉接点、３４…
…直列回路、３５……常開接点、３６……発光ダ
イオード、３８……切換スイツチ。 1 to 3 show an embodiment of the relay control circuit testing device of the present invention, and FIG. 1 is a wiring diagram;
Figures 2a and b are a front view and right side view of a part of the exterior, Figure 3 is a front view of the entire exterior, Figures 4 and 5.
The figures are a wiring diagram and an external perspective view of a conventional example. A, B... Connection terminal, 1, 4, 5... First, second, third diode, 2... Current limiting resistor, 3... Photo diode, 6, 7... Normally open contact, 8... Relay control circuit, 25, 27, 29...main, auxiliary,
Reset relay, 26, 37...Current limiting resistor, 28
, 32...first and second normally open contacts, 30, 31...
First and second switching contacts, 33... Normally closed contacts, 34...
...Series circuit, 35... Normally open contact, 36... Light emitting diode, 38... Changeover switch.

Claims

[Claims for Utility Model Registration] A first diode whose cathode is connected to one connection terminal via a current limiting resistor and whose anode is connected to the other connection terminal, and which are connected in parallel in the opposite direction to the first diode. a second diode having a cathode connected to the one connection terminal, a third diode having an anode connected to the one connection terminal, and a third diode provided between the anode of the second diode and the other connection terminal. a normally open contact for an input command that is turned on for a predetermined period of time when the switch is turned on; and a normally open contact for a cut command that is provided between the cathode of the third diode and the other connection terminal and that is turned on for the predetermined period of time when the switch is turned on. A relay control circuit testing device for testing the operation of a relay control circuit that controls a load driving relay connected between both connection terminals, comprising: a DC power source; a main relay connected to the negative terminal; an auxiliary relay having one end connected to the negative terminal and the other end connected to the positive terminal of the DC power source via a first normally open contact of the main relay; a reset relay connected to a negative terminal, and a first terminal of the auxiliary relay whose normally closed terminal and normally open terminal are respectively connected to the other end of the main relay and the positive terminal, and whose common terminal is connected to the one connection terminal. a second switching contact of the auxiliary relay in which a normally closed terminal and a normally open terminal are respectively connected to the positive terminal and the other end of the reset relay, and a common terminal is connected to the other connection terminal; A second normally open contact of the main relay and a normally closed contact of the reset relay are provided in series between the positive terminal and the other end of the main relay, and the auxiliary contact is provided between the positive and negative terminals. A series circuit consisting of a normally open contact of the relay, a light emitting display element, and a current limiting resistor, a common terminal connected to the positive terminal, and two switching terminals connected to the other end of the main relay and the other end of the reset relay, respectively. Test equipment for relay control circuits equipped with a changeover switch and