Elevator contact circuit device

Abstract

A contact circuit device for an elevator is provided that can reduce power consumption in a circuit including a contact. [Solution] The contact circuit device 1 includes a contact circuit 30, a control circuit 20, and a processing circuit 40. The processing circuit 40 outputs an operation signal to the control circuit 20 when it is necessary to check the continuity state of the contact circuit 30. When the operation signal is input from the processing circuit 40, the control circuit 20 applies a rated voltage to the contact circuit 30. If the operation signal is not input from the processing circuit 40, the control circuit 20 applies no voltage to the contact circuit 30 or applies a voltage lower than the rated voltage to the contact circuit 30. The processing circuit 40 performs suppression control to reduce the amount of change in the applied voltage when the voltage rises and falls when the rated voltage is applied to the contact circuit 30.

Description

[Technical field]

[0001] The present disclosure relates to a contact circuit device for an elevator. [Background technology]

[0002] Patent Document 1 describes an elevator device. The elevator device described in Patent Document 1 includes a safety circuit and a DC / DC converter that supplies power to the safety circuit. The safety circuit includes a plurality of safety switches connected in series. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-96881 A Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 describes that a DC / DC converter is provided as a power source for supplying power to the safety circuit, so that a high voltage can be applied to the safety circuit. Conventional elevator devices, including the elevator device described in Patent Document 1, have had a problem in that the power consumption of circuits including contacts is large.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a contact circuit device for an elevator that can reduce power consumption of a circuit including a contact. [Means for solving the problem]

[0006] The elevator contact circuit device according to the present disclosure comprises a first contact circuit including one or more contacts, a first control circuit for adjusting a voltage applied to the first contact circuit, and a processing circuit for outputting a first operation signal to the first control circuit when it is necessary to check the continuity state of the first contact circuit. The first control circuit applies a rated voltage to the first contact circuit when the first operation signal is input from the processing circuit, and applies no voltage or a voltage lower than the rated voltage to the first contact circuit when the first operation signal is not input from the processing circuit. The processing circuit performs suppression control to reduce the amount of change in the applied voltage when the voltage rises and falls when the rated voltage is applied to the first contact circuit. Effect of the Invention

[0007] The elevator contact circuit device according to the present disclosure can reduce power consumption in a circuit including a contact. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram showing an example of a contact circuit device for an elevator in embodiment 1. FIG. [Diagram 2] 5 is a diagram showing another example of the elevator contact circuit device in embodiment 1. FIG. [Diagram 3] 5 is a diagram showing another example of the elevator contact circuit device in embodiment 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a detailed description will be given with reference to the drawings. Duplicate descriptions will be appropriately simplified or omitted. In each drawing, the same reference numerals indicate the same or corresponding parts.

[0010] Embodiment 1 Fig. 1 is a diagram showing an example of a contact circuit device 1 for an elevator in embodiment 1. The contact circuit device 1 includes a power source 10, a control circuit 20, a contact circuit 30, and a processing circuit 40. Fig. 1 shows an example in which the contact circuit device 1 includes one control circuit 20 and one contact circuit 30, as the simplest example.

[0011] 1 shows a preferred example in which a contact circuit 30 includes a plurality of contacts 31 connected in series. The plurality of contacts 31 may be connected in parallel. Some of the plurality of contacts 31 may be connected in parallel to other contacts 31.

[0012] As an example, contact 31 is a contact of a door switch provided at an elevator landing. The door switch is a switch for detecting the opening and closing of a door provided at the landing. If the door is fully closed, the contact of the door switch is closed. If the door is open, the contact of the door switch is open. The door switch is provided at each elevator landing. In this example, contact circuit 30 includes the contact of the door switch provided at each landing.

[0013] As another example, the contact circuit 30 may include only one contact 31. For example, the contact 31 may be a contact of a door switch provided in an elevator car. The contact 31 may be a contact of a switch for position detection provided in the car.

[0014] As another example, the contacts 31 may be contacts of equipment necessary for the elevator to cooperate with other devices. Such other devices may include a fire alarm, a robot control device, etc. The robot control device is a device for controlling a robot that can move in the elevator car.

[0015] Examples of the contact 31 are not limited to these. The contact 31 may be a contact of another switch or a contact of another device.

[0016] 1, the contact circuit 30 includes a load resistor 32 and a photocoupler 33 in addition to a plurality of contacts 31. The plurality of contacts 31, the resistor 32, and the light-emitting element of the photocoupler 33 are connected in series.

[0017] The power source 10 supplies the control circuit 20 with the power required to apply the rated voltage to the contact circuit 30 .

[0018] The control circuit 20 is connected between the power source 10 and the contact circuit 30. The control circuit 20 is supplied with power from the power source 10. The control circuit 20 has a function of adjusting the voltage applied to the contact circuit 30. In the example shown in FIG. 1, the control circuit 20 includes a switching element 21 and a filter circuit 22. The switching element 21 is, for example, a transistor. Other elements may be used as the switching element 21. The filter circuit 22 is a circuit for reducing high-frequency noise components generated when the switching element 21 performs switching, i.e., switching noise. The filter circuit 22 is connected between the switching element 21 and the contact circuit 30.

[0019] The processing circuit 40 outputs a control signal to the control circuit 20. The control circuit 20 adjusts the voltage applied to the contact circuit 30 based on the control signal input from the processing circuit 40. In an elevator, it is necessary to check the open / closed state of the contact 31 included in the contact circuit 30, i.e., the continuity state of the contact circuit 30. When it is necessary to check the continuity state of the contact circuit 30, the processing circuit 40 outputs an operation signal to the control circuit 20 as the control signal.

[0020] In the example shown in FIG. 1, an operation signal from the processing circuit 40 is input to the switching element 21. When the operation signal is input from the processing circuit 40, the control circuit 20 applies a preset rated voltage to the contact circuit 30. That is, when it is necessary to check the conductive state of the contact circuit 30, the processing circuit 40 outputs an operation signal to the switching element 21 of the control circuit 20 such that the rated voltage is applied to the contact circuit 30. In the example shown in FIG. 1, if all the contacts 31 included in the contact circuit 30 are closed, the light receiving element of the photocoupler 33 receives light emitted from the light emitting element. As a result, a detection signal is output from the photocoupler 33 to the processing circuit 40. By inputting the detection signal from the photocoupler 33, the processing circuit 40 can detect that all the contacts 31 included in the contact circuit 30 are closed.

[0021] On the other hand, the control circuit 20 does not apply a voltage to the contact circuit 30 unless an operation signal is input from the processing circuit 40. In other words, the processing circuit 40 does not output a control signal to the control circuit 20 when there is no need to check the conductive state of the contact circuit 30.

[0022] Note that "when it is necessary to check the continuity state of the contact circuit 30" and "when it is not necessary to check the continuity state of the contact circuit 30" are determined according to the type of contacts 31 included in the contact circuit 30, etc. For example, depending on the type of contacts 31, "while the elevator car is traveling" may be a case where it is necessary to check the continuity state of the contact circuit 30, or a case where it is not necessary to check the continuity state of the contact circuit 30. "While the car is stopped" may be a case where it is necessary to check the continuity state of the contact circuit 30, or a case where it is not necessary to check the continuity state of the contact circuit 30. "While the car is at rest" may also be a case where it is not necessary to check the continuity state of the contact circuit 30.

[0023] In this example, when there is no need to check the continuity state of the contact circuit 30, no voltage is applied to the contact circuit 30. This makes it possible to reduce the power consumption of the contact circuit 30, i.e., the power consumed by the contact circuit device 1.

[0024] In this way, by controlling the timing of energizing the contact circuit 30, it is possible to reduce the power consumed by the contact circuit device 1. However, simply controlling the timing can easily cause electromagnetic interference (EMI).

[0025] As an EMI countermeasure, the processing circuit 40 performs suppression control by an operation signal at the rising and falling times of the voltage when the rated voltage is applied to the contact circuit 30. The suppression control is a control for making the change amount of the voltage applied to the contact circuit 30 smaller than when the control is not performed. That is, the suppression control is performed when the voltage applied to the contact circuit 30 changes from 0V to the rated voltage (for example, 48V) and when the voltage changes from the rated voltage to 0V. This makes it possible to make the change in the voltage applied to the contact circuit 30 gentle during each period. In the example shown in FIG. 1, the processing circuit 40 may perform chopper control on the switching element 21 to gradually change the duty ratio as the suppression control. This makes it possible to disperse the electromagnetic energy radiated from the contact circuit 30 over time when checking the conduction state starts and ends, thereby making it possible to reduce the influence on adjacent circuits or wiring.

[0026] The control circuit 20 shown in Fig. 1 is one example. As another example, the control circuit 20 may include an element or circuit capable of linear control. In this example, the processing circuit 40 performs linear control on the control circuit 20 as suppression control, and gradually changes the voltage applied to the contact circuit 30. Even in this example, suppression control can be realized.

[0027] As another example, in order to reduce the power consumed by the contact circuit device 1, the control circuit 20 may apply a voltage lower than the rated voltage to the contact circuit 30 when an operation signal is not input from the processing circuit 40.

[0028] For example, when the contacts of the door switches provided at each landing are included in the contact circuit 30, if the elevator car has a travel distance of 100 m, the wiring included in the contact circuit 30 may be twice as long as the travel distance, i.e., more than 200 m. In this way, when the wiring included in the contact circuit 30 is long, frequent switching between 0 V and the rated voltage increases the amount of electromagnetic energy radiation. In order to suppress the amount of electromagnetic energy radiation, the control circuit 20 may apply a voltage of, for example, 1 / 2 the rated voltage to the contact circuit 30 when no operation signal is input from the processing circuit 40.

[0029] In this case, when there is no need to check the conductive state of the contact circuit 30, the processing circuit 40 outputs a standby signal as a control signal to the control circuit 20. In the example shown in Fig. 1, the standby signal from the processing circuit 40 is input to the switching element 21. When the standby signal is input from the processing circuit 40, the control circuit 20 applies a voltage lower than the rated voltage to the contact circuit 30. In other words, when there is no need to check the conductive state of the contact circuit 30, the processing circuit 40 outputs a standby signal to the switching element 21 of the control circuit 20 such that a voltage lower than the rated voltage is applied to the contact circuit 30.

[0030] As another example, the control circuit 20 may not apply a voltage to the contact circuit 30 or may apply a voltage lower than the rated voltage when an operation signal is not input from the processing circuit 40. For example, the processing circuit 40 determines whether or not the first condition is satisfied when there is no need to check the conductive state of the contact circuit 30. The first condition is a condition for outputting a standby signal as a control signal to the control circuit 20. As an example, the first condition may be set based on the type of the contact 31, etc. The first condition may be satisfied when the car is traveling. The first condition may be satisfied when the car is stopped. The first condition may be satisfied when the car is not at rest.

[0031] In this example, when there is no need to check the continuity state of the contact circuit 30, the processing circuit 40 outputs a standby signal as a control signal to the control circuit 20 if the first condition is met. When the standby signal is input from the processing circuit 40, the control circuit 20 applies a voltage lower than the rated voltage to the contact circuit 30. When there is no need to check the continuity state of the contact circuit 30, the processing circuit 40 does not output a control signal to the control circuit 20 if the first condition is not met. The control circuit 20 does not apply a voltage to the contact circuit 30 if neither an operation signal nor a standby signal is input from the processing circuit 40.

[0032] Fig. 2 is a diagram showing another example of the contact circuit device 1 for an elevator in the first embodiment. The contact circuit device 1 shown in Fig. 2 differs from the contact circuit device 1 shown in Fig. 1 in that it includes a plurality of contact circuits 30. As shown in Fig. 2, the contact circuit device 1 may include a plurality of contact circuits 30. Fig. 2 shows an example in which the contact circuit device 1 includes two contact circuits 30, but the contact circuit device 1 may include three or more contact circuits 30.

[0033] The control circuit 20 has a function of adjusting the voltage applied to each contact circuit 30. Specifically, when an operation signal is input from the processing circuit 40, the control circuit 20 applies a rated voltage to each contact circuit 30. If an operation signal is not input from the processing circuit 40, the control circuit 20 does not apply a voltage to each contact circuit 30 or applies a voltage lower than the rated voltage to each contact circuit 30.

[0034] Fig. 3 is a diagram showing another example of the elevator contact circuit device 1 in the first embodiment. In the example shown in Fig. 3, the contact circuit device 1 includes a power source 10, a processing circuit 40, and multiple sets of control circuits 20 and contact circuits 30. Fig. 3 shows an example in which the contact circuit device 1 includes two sets of control circuits 20 and contact circuits 30, but the contact circuit device 1 may include three or more sets of control circuits 20 and contact circuits 30. Furthermore, the contact circuit device 1 may include multiple contact circuits 30 in one set, as in the example shown in Fig. 2.

[0035] In the following description, when it is necessary to distinguish between one set of the control circuit 20 and the contact circuit 30 and the other set of the control circuit 20 and the contact circuit 30, the elements of the one set are given the letter "A" and the elements of the other set are given the letter "B." For example, the contact circuit device 1 includes a power supply 10, a control circuit 20A, a control circuit 20B, a contact circuit 30A, a contact circuit 30B, and a processing circuit 40, as shown in FIG.

[0036] The power supply 10, the control circuits 20, the contact circuits 30, and the processing circuit 40 are basically the same as any of the examples described above.

[0037] The power supply 10 supplies the necessary power to each of the control circuits 20 .

[0038] 3 shows a preferred example in which contact circuit 30A includes multiple contacts 31A connected in series, and contact circuit 30B includes multiple contacts 31B connected in series, similar to FIG. 1. Contact circuit 30A may include only one contact 31A. Contact circuit 30B may include only one contact 31B.

[0039] The control circuit 20A is connected between the power source 10 and the contact circuit 30A. The control circuit 20A is supplied with power from the power source 10. The control circuit 20A has a function of adjusting the voltage applied to the contact circuit 30A. In the example shown in Fig. 3, the control circuit 20A includes a switching element 21A and a filter circuit 22A for reducing switching noise.

[0040] The control circuit 20B is connected between the power source 10 and the contact circuit 30B. The control circuit 20B is supplied with power from the power source 10. The control circuit 20B has a function of adjusting the voltage applied to the contact circuit 30B. In the example shown in Fig. 3, the control circuit 20B includes a switching element 21B and a filter circuit 22B for reducing switching noise.

[0041] The processing circuit 40 outputs a control signal to each of the control circuit 20A and the control circuit 20B. For example, the processing circuit 40 outputs a first control signal to the control circuit 20A. The control circuit 20A adjusts the voltage applied to the contact circuit 30A based on the first control signal input from the processing circuit 40. When it is necessary to check the conductive state of the contact circuit 30A, the processing circuit 40 outputs a first operation signal to the control circuit 20A as the first control signal.

[0042] Furthermore, the processing circuit 40 outputs a second control signal to the control circuit 20B. The control circuit 20B adjusts the voltage applied to the contact circuit 30B based on the second control signal input from the processing circuit 40. When it is necessary to check the conductive state of the contact circuit 30B, the processing circuit 40 outputs a second operation signal as the second control signal to the control circuit 20B.

[0043] The control circuit 20A applies the rated voltage to the contact circuit 30A when the first operation signal is input from the processing circuit 40. In addition, as a countermeasure against EMI, the processing circuit 40 performs suppression control using the first operation signal at the time of voltage rise and fall when the rated voltage is applied to the contact circuit 30A.

[0044] The control circuit 20B applies the rated voltage to the contact circuit 30B when the second operation signal is input from the processing circuit 40. In addition, as a countermeasure against EMI, the processing circuit 40 performs suppression control using the second operation signal at the time of voltage rise and fall when the rated voltage is applied to the contact circuit 30B.

[0045] On the other hand, the control circuit 20A does not apply a voltage to the contact circuit 30A unless the first operation signal is input from the processing circuit 40. The control circuit 20A may apply a voltage lower than the rated voltage to the contact circuit 30A when the first operation signal is not input from the processing circuit 40. In such a case, when there is no need to check the conductive state of the contact circuit 30A, the processing circuit 40 outputs a first standby signal to the control circuit 20A as the first control signal. When the first standby signal is input from the processing circuit 40, the control circuit 20A applies a voltage lower than the rated voltage to the contact circuit 30A.

[0046] Similarly, the control circuit 20B does not apply a voltage to the contact circuit 30B unless the second operation signal is input from the processing circuit 40. The control circuit 20B may apply a voltage lower than the rated voltage to the contact circuit 30B when the second operation signal is not input from the processing circuit 40. In such a case, when there is no need to check the conductive state of the contact circuit 30B, the processing circuit 40 outputs a second standby signal to the control circuit 20B as the second control signal. When the second standby signal is input from the processing circuit 40, the control circuit 20B applies a voltage lower than the rated voltage to the contact circuit 30B.

[0047] In the contact circuit device 1 shown in Fig. 3, the processing circuit 40 may control the control circuit 20A and the control circuit 20B in a time-division manner. In such a case, the processing circuit 40 outputs the first operation signal and the second operation signal in sequence. In other words, the processing circuit 40 does not output the first operation signal and the second operation signal simultaneously.

[0048] 3, the control for the control circuit 20A and the control for the control circuit 20B do not have to be the same. For example, the control circuit 20A may apply a voltage lower than the rated voltage to the contact circuit 30A unless a first operation signal is input, and the control circuit 20B may not apply a voltage to the contact circuit 30B unless a second operation signal is input.

[0049] That is, in this example, the processing circuit 40 outputs a first standby signal to the control circuit 20A when there is no need to check the conductive state of the contact circuit 30A, and does not output a control signal to the control circuit 20B when there is no need to check the conductive state of the contact circuit 30B. This example is particularly effective in cases where the wiring length of the contact circuit 30A is longer than the wiring length of the contact circuit 30B, such as when the contacts of the door switches provided at each landing are included in the contact circuit 30A.

[0050] In the contact circuit device 1 shown in Fig. 3, when there is no need to check the conductive state of the contact circuit 30A, the processing circuit 40 may output a first standby signal as a first control signal to the control circuit 20A when a first condition is satisfied. The first condition is a condition for outputting the first standby signal as the first control signal to the control circuit 20A. When the first standby signal is input from the processing circuit 40, the control circuit 20A applies a voltage lower than the rated voltage to the contact circuit 30A. If neither the first operating signal nor the first standby signal is input from the processing circuit 40, the control circuit 20A does not apply a voltage to the contact circuit 30A.

[0051] Similarly, when there is no need to check the conductive state of the contact circuit 30B, the processing circuit 40 may output a second standby signal as the second control signal to the control circuit 20B when the second condition is satisfied. The second condition is a condition for outputting the second standby signal as the second control signal to the control circuit 20B. When the second standby signal is input from the processing circuit 40, the control circuit 20B applies a voltage lower than the rated voltage to the contact circuit 30B. If neither the second operation signal nor the second standby signal is input from the processing circuit 40, the control circuit 20B does not apply a voltage to the contact circuit 30B.

[0052] Below, examples of aspects that may be included in the present disclosure are set forth as appendices.

[0053] [Appendix 1] a first contact circuit including one or more contacts; a first control circuit for adjusting a voltage applied to the first contact circuit; a processing circuit that outputs a first operation signal to the first control circuit when it is necessary to check the electrical continuity of the first contact circuit; Equipped with the first control circuit applies a rated voltage to the first contact circuit when the first operation signal is input from the processing circuit, and applies no voltage or a voltage lower than the rated voltage to the first contact circuit when the first operation signal is not input from the processing circuit; The processing circuit is an elevator contact circuit device that performs suppression control to reduce the amount of change in applied voltage when the voltage rises and falls when the rated voltage is applied to the first contact circuit. [Appendix 2] the first control circuit includes a switching element and a filter circuit for reducing switching noise; The processing circuit performs chopper control on the switching element to gradually change a duty ratio as the suppression control, The elevator contact circuit device according to claim 1, wherein the filter circuit is connected between the switching element and the first contact circuit. [Appendix 3] The elevator contact circuit device of claim 1, wherein the processing circuit performs linear control on the first control circuit as the suppression control to gradually change the voltage applied to the first contact circuit. [Appendix 4] the processing circuit outputs a first standby signal to the first control circuit when a first condition is satisfied in a case where there is no need to check the continuity state of the first contact circuit; The elevator contact circuit device according to any one of Supplementary Note 1 to Supplementary Note 3, wherein the first control circuit applies a voltage lower than a rated voltage to the first contact circuit when the first standby signal is input from the processing circuit, and does not apply voltage to the first contact circuit if neither the first operation signal nor the first standby signal is input from the processing circuit. [Appendix 5] a second contact circuit including one or more contacts; A second control circuit for adjusting a voltage applied to the second contact circuit; Further comprising: the processing circuit outputs a second operation signal to the second control circuit when it is necessary to check the continuity state of the second contact circuit; the second control circuit applies a rated voltage to the second contact circuit when the second operation signal is input from the processing circuit, and applies no voltage or a voltage lower than the rated voltage to the second contact circuit when the second operation signal is not input from the processing circuit; 4. An elevator contact circuit device according to any one of claims 1 to 3, wherein the processing circuit performs suppression control to reduce a change in applied voltage at the time of voltage rise and fall when a rated voltage is applied to the second contact circuit. [Appendix 6] The elevator contact circuit device according to claim 5, wherein the processing circuit does not output the first operation signal and the second operation signal simultaneously. [Appendix 7] the first control circuit applies a voltage lower than a rated voltage to the first contact circuit when the first operation signal is not input from the processing circuit; 7. An elevator contact circuit device according to claim 5 or 6, wherein the second control circuit does not apply voltage to the second contact circuit unless the second operation signal is input from the processing circuit. [Appendix 8] the processing circuit outputs a second standby signal to the second control circuit when a second condition is satisfied in a case where there is no need to check the continuity state of the second contact circuit; The elevator contact circuit device of Appendix 7, wherein the second control circuit applies a voltage lower than a rated voltage to the second contact circuit when the second standby signal is input from the processing circuit, and does not apply voltage to the second contact circuit if neither the second operation signal nor the second standby signal is input from the processing circuit. [Appendix 9] The elevator contact circuit device according to claim 7 or 8, wherein the wiring length of the first contact circuit is longer than the wiring length of the second contact circuit. [Appendix 10] 10. An elevator contact circuit device as described in Appendix 9, wherein the first contact circuit includes a contact of a door switch provided at each elevator hall. [Explanation of symbols]

[0054] 1 Contact circuit device 10 Power supply 20 Control circuit 21 Switching element 22 Filter Circuit 30 contact circuit 31 Contacts 32 resistor 33 Photocoupler 40 Processing circuit

Claims

1. a first contact circuit including one or more contacts; a first control circuit for adjusting a voltage applied to the first contact circuit; a processing circuit that outputs a first operation signal to the first control circuit when it is necessary to check the electrical continuity of the first contact circuit; Equipped with the first control circuit applies a rated voltage to the first contact circuit when the first operation signal is input from the processing circuit, and applies no voltage or a voltage lower than the rated voltage to the first contact circuit when the first operation signal is not input from the processing circuit; The processing circuit is an elevator contact circuit device that performs suppression control to reduce the amount of change in applied voltage when the voltage rises and falls when a rated voltage is applied to the first contact circuit.

2. the first control circuit includes a switching element and a filter circuit for reducing switching noise; The processing circuit performs chopper control on the switching element to gradually change a duty ratio as the suppression control, 2. The elevator contact circuit device according to claim 1, wherein the filter circuit is connected between the switching element and the first contact circuit.

3. The elevator contact circuit device according to claim 1, wherein the processing circuit performs linear control on the first control circuit as the suppression control for gradually changing the voltage applied to the first contact circuit.

4. when there is no need to check the continuity state of the first contact circuit, when a condition set based on a type of contact included in the first contact circuit is satisfied, when an elevator car is traveling, when the car is stopped, or when the car is not at rest, outputting a first standby signal to the first control circuit; 4. The elevator contact circuit device according to any one of claims 1 to 3, wherein the first control circuit applies a voltage lower than a rated voltage to the first contact circuit when the first standby signal is input from the processing circuit, and does not apply voltage to the first contact circuit when neither the first operation signal nor the first standby signal is input from the processing circuit.

5. a second contact circuit including one or more contacts; a second control circuit for adjusting a voltage applied to the second contact circuit; Further comprising: the processing circuit outputs a second operation signal to the second control circuit when it is necessary to check the electrical continuity of the second contact circuit; the second control circuit applies a rated voltage to the second contact circuit when the second operation signal is input from the processing circuit, and applies no voltage or a voltage lower than the rated voltage to the second contact circuit when the second operation signal is not input from the processing circuit; 4. An elevator contact circuit device according to claim 1, wherein the processing circuit performs suppression control to reduce the amount of change in the applied voltage when the voltage rises and falls when a rated voltage is applied to the second contact circuit.

6. The elevator contact circuit device according to claim 5, wherein the processing circuit does not output the first operation signal and the second operation signal simultaneously.

7. the first control circuit applies a voltage lower than a rated voltage to the first contact circuit when the first operation signal is not input from the processing circuit; The elevator contact circuit device according to claim 5, wherein the second control circuit does not apply a voltage to the second contact circuit unless the second operation signal is input from the processing circuit.

8. when there is no need to check the continuity state of the second contact circuit, if a condition set based on a type of contact included in the second contact circuit is satisfied, if an elevator car is traveling, if the car is stopped, or if the car is not at rest, outputting a second standby signal to the second control circuit; 8. An elevator contact circuit device as described in claim 7, wherein the second control circuit applies a voltage lower than a rated voltage to the second contact circuit when the second standby signal is input from the processing circuit, and does not apply voltage to the second contact circuit when neither the second operation signal nor the second standby signal is input from the processing circuit.

9. The elevator contact circuit device according to claim 7, wherein a wiring length of the first contact circuit is longer than a wiring length of the second contact circuit.

10. 10. The elevator contact circuit device according to claim 9, wherein the first contact circuit includes a contact of a door switch provided at each elevator hall.

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