JP2543731Y2 - Relay checking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for checking a relay.

[Conventional technology]

A control device using a relay as a control element often cannot perform proper control due to a failure of the relay.

Conventionally, when checking whether or not the relay has failed, a power supply for operating the relay and a so-called tester are prepared. The condition is checked with the above tester.

[Problems to be solved by the invention]

The above check method requires a lot of time and effort for the setup for the check, especially when the relay has a multi-contact configuration.

Therefore, when the control device is used in a production facility, a situation occurs in which the production facility is stopped for a long time for the above check.

SUMMARY OF THE INVENTION An object of the present invention is to provide a relay check device that can perform a relay check extremely easily and quickly in view of such a situation.

[Means for solving the problem]

The present invention includes a socket for mounting a relay to be checked, an AC power supply and a DC power supply for operating the relay,
First switch means for selecting one of the AC power supply and DC power supply; second switch means for connecting the power supply selected by the first switch means to the coil of the relay via the socket; A light-emitting element that is connected to a contact of the relay via a socket and that lights when the contact is closed.

[Action]

By selecting the AC power supply by the first switch means, it is possible to check the operation of the relay of the AC specification, and by selecting the DC power supply by the switch means, it is possible to check the operation of the relay of the DC specification. . At this time, the operation of the relay is checked based on the non-operation of the second switch means and the lighting state of the light emitting element accompanying the operation.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a circuit diagram showing one embodiment of the present invention applied to a relay for 100 V AC and a relay for 24 V DC.

This embodiment includes a power supply unit 10 and power supply changeover switches 21 and 2.
2. It has a push button switch 30, a relay insertion socket 40, and lamps 51 to 58. The switches 21 and 22 are configured to work together.

The power supply unit 10 includes a commercial power supply 11 of AC 100V and a DC power supply of 24V.
And a rectifier (both not shown) for stepping down the AC 100 V and rectifying the output of the transformer.

The switches 21 and 22 have one contact 21a and 22a
Are connected to one end and the other end of the commercial power supply 11, respectively, and the other contacts 21b and 22b are connected to one end and the other end on the output side of the DC power supply 12, respectively.

The common terminal 21c of the switch 21 is
The common terminal 22c of the switch 22 is connected to the terminal 40j of the socket 40 via the push button switch 30.

The terminals 40b to 40i of the socket 40 are connected to one end on the output side of the DC power supply 12 via lamps 51 to 58, respectively, and the terminals 40k to 40n of the socket 40 are connected to the DC power supply, respectively.
It is connected to the other end on the 12 output side.

FIG. 2 shows the appearance of this embodiment. As shown in the figure, the switches 21 and 22, the push button switch 30, the socket 40 and the lamps 51 to 58 are mounted on a panel 61 provided in a portable box 60.

When checking the relay 80 shown in FIG. 2 using the checking device of this embodiment, the relay 80 is inserted into the socket 40. When the relay 80 has, for example, an AC 100 V specification, the power supply changeover switches 21 and 2
2 is supplied to the contacts 21a and 22a as shown in FIG.

Now, assuming that the push button switch 30 is not closed, no AC 100 V is applied to the coil 81 of the relay 80 in this state, so that the relay 80 is in a deenergized state.

Therefore, each mover 82, 83, 84 and 85 of relay 80
Are normally in contact with the normally closed contact b,
The lamp groups 52, 54, 56 and 58 arranged on the right side in FIG. 2 are turned on.

If, for example, the mover 82 among the movers 82, 83, 84 and 85 does not normally contact the contact b, the lamp 52 corresponding to the contact b does not light.

Further, for example, when the mover 82 is welded to the contact point a, the lamp 51 that should not be lit is lit.

Next, when the push button switch 30 is pressed and closed, the relay 80 is closed.
100V AC is applied to the coil 81, and the relay 80 is energized.

At this time, if each of the movers 82, 83, 84 and 85 normally contacts the normally open contact a, the lamp group lamps 51, 53, 55 and 57 arranged on the left side in FIG. 2 are turned on.

Further, when, for example, the mover 82 among the movers 82, 83, 84 and 85 does not normally contact the contact a, the lamp 51 corresponding to the contact a does not turn on, and When the child 82 is welded to the contact b, the lamp 52, which should not be lit, is lit.

As described above, according to this embodiment, the location of the abnormality of the relay 80 and the form of the abnormality can be known from the lighting states of the lamps 52 to 58.

When the relay 80 has a DC 24 V specification, the relay can be checked by turning on the power supply changeover switches 21 and 22 to the contacts 21b and 22b.

In the above embodiment, the lamps 52 to 58 are turned on at 24 VDC, but it is naturally possible to turn on the lamps at 100 VAC.

Further, a light emitting diode may be used in place of the lamps 52 to 58, and a battery may be used as the DC power supply 12.

In addition, the present invention can be applied to the check of the output relay built in the timer.
Is used that conforms to the specifications of the timer.

[Effect of the invention]

ADVANTAGE OF THE INVENTION According to this invention, the relay of a multi-contact structure can be checked simply and quickly only by the operation of inserting a relay into a socket and the opening / closing operation of switch means.

Therefore, when the relay to be checked is used in the control device of the production facility, it is possible to prevent the production facility from stopping for a long time due to the check.

Also, by selecting an AC power supply by the first switch means, it is possible to check the operation of the relay of the AC specification, and by selecting the DC power supply by the switch means, it is possible to check the operation of the relay of the DC specification. Becomes

Therefore, if it is applied to the relay check of a control device that mixes an AC specification relay and a DC specification relay,
The checking operation can be performed efficiently and economically.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing one embodiment of a check device according to the present invention, and FIG. 2 is a perspective view showing an appearance of this embodiment. 10: Power supply unit, 11: AC power supply, 12: DC power supply, 21, 2
2 Power switch, 30 Push button switch, 40
... Sockets, 51-58 ... Lamps, 80 ... Relays.

Claims (1)

(57) [Scope of request for utility model registration] 1. A socket (40) for mounting a relay (80) to be checked, an AC power supply (11) and a DC power supply (12) for operating the relay.
First switch means (21, 22) for selecting one of the AC power supply (11) and DC power supply (12); and a power supply selected by the first switch means (21, 22) in the socket. A second switch means (30) connected to the coil (81) of the relay (80) via the (40); and a contact connected to the contact of the relay (80) via the socket (40). And a light-emitting element (51-58) that lights up when is closed.