JP7110717B2 - relay controller - Google Patents

Description

The present invention relates to a relay control device.

The control system includes a relay control device that controls a plurality of lighting fixtures, an operation device that is a transmission control device that operates the relay control device, and an operation terminal that issues commands to the operation device. In the conventional control system, power for the control circuit of the relay control device and power for the relay circuit are generated from the operation signal supplied from the operating device, and the control circuit and the relay circuit are operated (for example, Patent Document 1 reference). This makes it possible to control the relay circuit that controls ON/OFF of the voltage supplied to the load.

Japanese Patent No. 6206796

A conventional control system generated power for the internal circuits of the relay controller from the operating signal of the operating device. Therefore, when the operation device and the relay control device are cut off, or only the operation device is cut off, power supply to the internal circuit of the relay control device is also cut off. As a result, there is a problem that the relay circuit cannot be driven. Moreover, when a plurality of relay control devices are connected to the operating device, there is a problem that the current consumption of the operating device that supplies power to them increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and its object is to enable a relay circuit to be driven even when the power supply from one of the commercial power source and the operation device is cut off, thereby enabling the operation of the relay circuit from the commercial power source. to obtain a relay control device capable of reducing current consumption of an operating device by supplying power to the operating device.

A relay control device according to the present invention includes a relay circuit for controlling ON/OFF of a voltage supplied to a load according to an operation signal from an external operating device , and a first control power supply for supplying power to the relay circuit. a control circuit for controlling said relay circuit; a second control power supply for supplying power to said control circuit; an AC/DC conversion circuit; a third control power supply that generates electric power from the operation signal and supplies it to the first and second control power supplies; and when power is not supplied from the AC/DC conversion circuit The third controlled power source and the first and second controlled power sources are connected, and when power is supplied from the AC/DC conversion circuit, the third controlled power source and the first and second controlled power sources are connected. and a switching circuit for disconnecting connection with the control power supply, and the operating device is supplied with power from a commercial power supply in a system different from the commercial power supply .

In the present invention, the third controlled power supply and the first and second controlled power supplies are connected so that the power supply to the first and second controlled power supplies is maintained depending on the presence or absence of power supply from the commercial power supply. switch between connection and disconnection. As a result, even when power supply from either the commercial power source or the operation device is interrupted, power for the control circuit of the relay control device and power for the relay circuit can be generated to drive the relay circuit. Also, when power is supplied from both the commercial power source and the operating device, the power supply is switched to the power supply from the AC/DC conversion circuit. Thereby, the current consumption of the operating device can be reduced.

1 is a block diagram showing a control system according to Embodiment 1; FIG. 1 is a block diagram showing a relay control device according to Embodiment 1; FIG. FIG. 10 is a block diagram showing a control system according to Embodiment 2; FIG. 8 is a block diagram showing a relay control device according to Embodiment 2; FIG.

A relay control device according to an embodiment will be described with reference to the drawings. The same reference numerals are given to the same or corresponding components, and repetition of description may be omitted.

Embodiment 1.
FIG. 1 is a block diagram showing a control system according to Embodiment 1. FIG. A relay control device 1 controls multiple loads 2 . The load 2 is, for example, a lighting fixture. The operation device 3 transmits an operation signal for operating the relay control device 1 to the relay control device 1 . An operating terminal 4 is connected to the operating device 3 .

The operation device 3 is connected to a plurality of operation terminals 4 and the relay control device 1, and by assigning an address to each relay control device 1 and each operation terminal 4, connection with each operation terminal 4 and relay control device 1 is controlled. At least one operation terminal 4 is connected to the operation device 3 and transmits a signal for controlling the load 2 to the operation device 3 . The relay control device 1 and the operation terminal 4 may be connected to the operation device 3 by transition wiring instead of the star connection shown in FIG.

At least one relay control device 1 is connected to the operation device 3 and an individual address is assigned to the load 2 . As a result, even when a plurality of loads 2 are connected to the relay control device 1, the plurality of loads 2 connected to the relay control device 1 are collectively connected according to the operation signal transmitted from the operation device 3. or can be controlled individually.

Commercial power supply 5 supplies power to relay control device 1 and load 2 connected to relay control device 1 . A commercial power source 6 supplies power to the operating device 3 . When the operation device 3 is supplied with power from the commercial power supply 6 , power is supplied from the operation device 3 to the operation terminal 4 and the relay control device 1 with an operation signal of ±24 V, for example. The commercial power source 6 is a commercial power source in a different system from the commercial power source 5 . When the commercial power supply 6 is shut off, the operation terminal 4 stops operating because power is not supplied from the operation device 3 . On the other hand, the relay control device 1 is supplied with electric power from the commercial power supply 5, so that the load 2 can be controlled.

FIG. 2 is a block diagram showing the relay control device 1 according to Embodiment 1. As shown in FIG. At least one relay circuit 7 is provided. The relay circuit 7 controls ON/OFF of the voltage supplied to the corresponding load 2 according to the operation signal from the external operation device 3 . A first control power supply 8 supplies power to the relay circuit 7 . The control circuit 9 controls the relay circuit 7 according to the operation signal. A second control power supply 10 supplies power to the control circuit 9 . The AC/DC conversion circuit 11 insulates the commercial power supply 5 from the first and second controlled power supplies 8 and 10, converts the AC power of the commercial power supply 5 into DC power, and converts the AC power to the first and second controlled power supplies 8. , 10. The third control power supply 12 generates electric power from the operation signal of the external operating device 3 .

Without power supply from the commercial power supply 5, the AC/DC conversion circuit 11 cannot supply power to the first and second control power supplies 8,10. Therefore, the switching circuit 13 connects the third controlled power source 12 and the first and second controlled power sources 8 and 10 when power is not supplied from the AC/DC conversion circuit 11 . In this case, power generated by the third controlled power supply 12 is supplied to the first and second controlled power supplies 8 and 10 . On the other hand, the switching circuit 13 cuts off the connection between the third controlled power source 12 and the first and second controlled power sources 8 and 10 when power is supplied from the AC/DC conversion circuit 11 . In this case, power generated by the AC/DC conversion circuit 11 is supplied to the first and second control power supplies 8 and 10 .

As described above, in the present embodiment, the third control is performed so that the power supply to the first and second controlled power sources 8 and 10 is maintained depending on the presence or absence of power supply from the commercial power source 5. Connection and disconnection between the power supply 12 and the first and second control power supplies 8 and 10 are switched. As a result, even when power supply from one of the commercial power source 5 and the operation device 3 is interrupted, power for the control circuit 9 of the relay control device 1 and power for the relay circuit 7 are generated to drive the relay circuit 7. can be done. In addition, when power is supplied from both the commercial power source 5 and the operation device 3, the current consumption of the operation device 3 can be reduced because the power supply is switched to the power supply from the AC/DC conversion circuit 11. FIG.

Note that the switching circuit 13 is not limited to a simple switch, and a circuit having a similar role may be formed by combining transistors. In either case, the relay control device 1 has the same circuit configuration, and there is no difference in effect. The operation terminal 4 is, for example, a switch installed on the wall, but the configuration of the control system is the same even if the operation terminal 4 is a dimmer installed on the ceiling, and there is no difference in effect. Also, although the operation device 3 and the operation terminal 4 are connected by wire, the configuration of the control system is the same even when they are connected by radio, and there is no difference in effect. However, in this case, the operation terminal 4 requires a separate power source. In addition, the number of relay control devices 1 connected to the operation device 3 is not limited to one, and even when a plurality of relay control devices 1 are connected to the operation device 3, the configuration of the control system is the same, and the effects are different. no.

Embodiment 2.
FIG. 3 is a block diagram showing a control system according to Embodiment 2. FIG. In this embodiment, setting devices 14 and 15 are added to the relay control device 1 of the first embodiment. The setting devices 14 and 15 are switches that are directly operated by the user, and are provided on the front or side of the relay control device 1 . Four loads 2 are connected to the relay control device 1, and the same number of setting devices 14 as the loads 2 and one setting device 15 are provided. The four setting devices 14 are provided in pairs with the four loads 2 connected to the relay control device 1, and individually control the four loads 2 even when the operation signal from the operation device 3 is interrupted. can do. The setting device 15 is a switch that collectively controls the four loads 2 connected to the relay control device 1 . Although four sets are shown in the drawing, with the combination of the setting device 14 and the load 2 as one set, a plurality of sets other than the four sets or one set may be used, and there is no difference in the effect.

FIG. 4 is a block diagram showing a relay control device according to Embodiment 2. FIG. In this embodiment, a setting device 16 is added to the relay control device 1 of the first embodiment. The setting device 16 corresponds to the setting device 14 or the setting device 15 of FIG. The setting device 16 is connected between the second control power supply 10 and the control circuit 9 for controlling the relay circuit 7 and ground. The setting device 16 can set the control of the load 2 by the relay circuit 7 from the outside. The setting device 16 sets the control of the load 2 by the relay circuit 7 prior to the operation signal from the external operation device 3 .

Although the setting device 16 is illustrated as a simple switch, it may be a toggle switch, a button switch, or a dip switch, or may be configured with a circuit having a similar role by combining transistors. In either case, the relay control device has the same circuit configuration, and there is no difference in effect.

The setting device 16 is connected to the second controlled power source 10, but the first controlled power source 8 is stepped down to a voltage equivalent to that of the second controlled power source 10 using a resistor or a diode and connected to the setting device 16. and there is no difference in effectiveness. The setting device 16 can control the load 2 connected to the relay control device 1 when power is supplied to the first and second control power sources 8 and 10 .

Although the setting device 16 and the relay circuit 7 are illustrated as one set, the same control configuration is obtained even if a plurality of sets of the setting device 16 and the relay circuit 7 are provided, and there is no difference in effect. For example, when four sets of the setting device 16 and the relay circuit 7 are provided, the first set is a combination of the first relay circuit and the first setting device, and the fourth set is a combination of the fourth relay circuit and the fourth setting device. be a combination. A fifth setting device is also provided for collectively controlling the first to fourth relay circuits. These setting devices switch between HIGH and LOW. When the state becomes either HIGH or LOW, the first to fourth setting devices individually control the corresponding relay circuits, and the fifth setting device collectively controls the plurality of relay circuits. Thereby, the setting device 16 can collectively or individually set the control of the plurality of loads 2 by the relay circuit 7 . Note that collective control of the fifth setting device has priority over individual control of the first to fourth setting devices.

3 operating device 5 commercial power supply 7 relay circuit 8 first control power supply 9 control circuit 10 second control power supply 11 AC/DC conversion circuit 12 third control power supply 13 switching circuit 16 setting Device

Claims (4)

a relay circuit for controlling ON/OFF of the voltage supplied to the load according to an operation signal from an external operating device ;
a first control power supply that supplies power to the relay circuit;
a control circuit that controls the relay circuit;
a second control power supply that supplies power to the control circuit;
an AC/DC conversion circuit that converts AC power from a commercial power source into DC power and supplies the power to the first and second control power sources;
a third controlled power supply that generates electric power from the operation signal and supplies it to the first and second controlled power supplies;
When power is not supplied from the AC/DC conversion circuit, the third controlled power supply is connected to the first and second controlled power supplies, and power is supplied from the AC/DC conversion circuit. a switching circuit for disconnecting the connection between the third controlled power supply and the first and second controlled power supplies ;
A relay control device , wherein the operation device is supplied with power from a commercial power source of a system different from the commercial power source . 2. The relay control device according to claim 1, further comprising a setting device connected to said control circuit and capable of externally setting control of the load by said relay circuit. 3. The relay control device according to claim 2, wherein said setting device is a switch directly operated by a user, and can collectively or individually set control of a plurality of loads by said relay circuit. 4. The relay control device according to claim 2, wherein said setting device is a switch that is directly operated by a user, and sets control of the load by said relay circuit prior to said operation signal.

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