JPH05252560A - Control terminal - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a control terminal capable of forcibly turning on a latching relay built in from the outside. A control terminal unit 13 for receiving a transmission signal from a central control unit 11 via a signal line, receiving control data for time division multiplex transmission, and outputting a control signal. 16 are integrated into one case, and this case
Terminals 75 and 77 to which the signal line, the load and the power supply line are connected are respectively formed at both ends of the switch, and a switch S1 that can be operated from the outside is provided on the surface other than the surface to which the control terminal 16 is attached. They are connected in parallel between the output contacts of the latching relay 61 for opening and closing the load provided inside the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention receives control data transmitted in a time division multiplex manner through a signal line from a central control unit,
The present invention relates to a control terminal device that outputs a control signal.

[0002]

2. Description of the Related Art Control terminals for receiving control data which are time-division-multiplexed and transmitted through a signal line from a central control unit and outputting control signals are disclosed in Japanese Utility Model Publication No. 2-84486 and Japanese Utility Model Publication No. No. 2-84487, Japanese Utility Model Laid-Open No. 2-8448.
It is known from publication No. 6.

The control terminal described in such a publication has a latching relay for opening and closing a load therein.
The latching relay is controlled based on the control data transmitted from the central control unit, the output contact of the latching relay is controlled to open and close, and the lighting load connected to the output contact is turned on. The lighting is controlled.

[0004]

However, during transportation of the control terminal, the internal latching relay is turned off by the impact.
It may be set to the side. As described above, when the latching relay is kept set to the OFF side, even if the control terminal is connected to the signal line from the central control unit and the system is constructed, the control terminal and the individual switch are connected. If the allocation is not completed, turn on the latching relay
The lighting load connected to the control terminal could not be turned on.

The present invention has been made in view of the above points, and an object of the present invention is to provide a control terminal capable of forcibly turning on a latching relay incorporated from the outside.

[0006]

A control terminal according to a first aspect of the present invention receives control data which is time-division-multiplexed and transmitted through a signal line from a central control unit and outputs a control signal. In the control terminal device, the control terminal device is integrally configured by one case, and terminal portions to which a signal line, a load and a power supply line are connected are formed at both ends of the case, respectively. A switch that can be operated from the outside is provided on a surface other than the surface on which the terminal is attached, and the switch is connected in parallel between the output contacts of the latching relay for opening and closing the load provided inside the terminal.

According to a second aspect of the present invention, there is provided a control terminal device for receiving control data, which is time-division-multiplexed transmitted through a signal line from a central control unit, and outputting a control signal. The control terminal is integrated into one case,
Terminal portions to which the signal line, the load and the power supply line are connected are respectively formed at both ends of the case, and a switch which can be pressed from the outside is provided on a surface other than the surface to which the control terminal is attached, and the switch is pressed. At this time, an exciting current is forced to flow through a set coil of a latching relay for opening and closing a load provided inside.

[0008]

According to the first aspect of the present invention, a switch that can be operated from the outside is provided on the control terminal of the control terminal integrally formed of one case, in addition to the surface to which the control terminal is attached, and the latching incorporated by this switch is provided. The output contact of the relay can be closed.

According to the second aspect of the present invention, a switch which can be pressed from the outside is provided on the control terminal integrally formed of one case, other than the surface on which the control terminal is attached, and the switch is built in when the switch is pressed. An exciting current is forcibly supplied to the set coil of the latching relay, and the output contact of the latching relay is closed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. 1 is an overall configuration diagram of a lighting control system to which a control terminal according to the present invention is connected, and FIG. 2 is a diagram showing a format of a voltage signal transmitted from a central control unit through a transmission signal line, 3 is a diagram showing a circuit of the control terminal according to the present invention, FIG. 4 is an exploded perspective view of the control terminal according to the present invention, and FIG. 5 is a perspective view of the control terminal according to the present invention.

In FIG. 1, 11 is a micro computer.
This is a central control unit that is configured mainly for the lighting control system and controls the lighting control system as a whole. This central control unit 11 has 2
Monitoring terminal device 1 according to the present invention via the line signal line 12
3, an individual switch 14, a control terminal 15 to which the load L1 is connected, a control terminal 16 according to the present invention, and a lighting fixture 18 incorporating a ballast 17 are connected.

Further, a wireless signal line 21 is connected to the central controller 11 via a wireless relay unit 20. A wireless receiver 22 is connected to the wireless signal line 21. This wireless receiver 2
Reference numeral 2 has a built-in infrared receiver, receives an infrared signal including a lighting control signal transmitted from the wireless transmitter 23, and transmits the lighting control signal to the central control device 11 via the wireless signal line 21. ing.

Further, control terminals 31, 32, ... Are connected to the central control unit 11 via a two-wire signal line 12. Remote control relays 41, 42, ... Are connected to the control terminals 31, 32 ,.

The central control unit 11, as shown in FIG. 2, includes a start data signal, an address data signal of the control terminal,
The control data for controlling the lighting load is output as a multi-polar (± 24 V) time division multiplexed signal with one frame.

Each control terminal receives the transmitted address data.
The data signal is compared with its own address, and if they match, the control data is fetched, and the current mode signal is returned to the central control unit 11 during the return data period shown in FIG. That is, the signal lines 12 are short-circuited via an appropriate low impedance to return the signal.

Next, referring to FIG. 3, the control terminal 16
The electric circuit diagram of is explained. In Figure 3, p1 and p2
Is a terminal connected to the pair of transmission lines 12. A resistor R1 and a Zener diode ZD1 connected in the opposite direction are connected in series between the terminal p1 and the ground line a1. The potential at the connection point between the resistor R1 and the Zener diode ZD1 is input to the control unit 51 as reception data.

The terminals p1 and p2 are connected to the a and b terminals of the diode bridge DB1, respectively. Diode bridge
The c terminal of DB1 is connected to the ground line a1, and the d terminal is connected to the non-ground side terminal of the smoothing capacitor C1 via the diode D1. The voltage Vcc generated at the non-grounded side terminal of the smoothing capacitor C1 is supplied as a driving power source for the latching relay 61.

Further, the d terminal of the diode bridge DB1 is connected to the power supply circuit 62d. The power supply VDD generated by the power supply circuit 62 is supplied as the power supply for driving the control unit 51. The collector of the transistor Q1 is connected to the d terminal of the diode bridge DB1 and its emitter is connected to the ground line a1 via the resistor R2. Further, the base of the transistor Q1 is connected to the control unit 51 via the base resistor R3. That is, by selectively turning on the transistor Q1, the central controller 1
The return data is returned to the central control unit 11 by inserting the resistor R2 in the return period of the bipolar signal transmitted from No. 1.

The latching relay 61 comprises a set coil 62 and a reset coil 63 which are connected in parallel with each other.
One end of each coil is connected to the voltage Vcc, and the other ends are connected to the collectors of the transistors Qs and Qr, respectively.
The emitters of the transistors Qs and Qr are grounded and
Are connected to the control unit 51 via resistors R4 and R5, respectively. Reference numeral 64 is a relay switch, which is closed when the set coil 62 is excited and the reset coil 63 is closed.
Is opened when is excited. A normally open switch S1 is connected between both ends of the relay switch 64. This switch S1 can be opened and closed from the outside of the control terminal 16 by a mechanical operation as described later.

Both ends of the relay switch 64 and the switch S1 are connected to load terminals L1 and L2. A lighting load is connected between the load terminals L1 and L2, and when one of the relay switch 64 and the switch S1 is closed, power is supplied to the lighting load connected to the load terminals L1 and L2. Then, the lighting load is controlled to be turned on (on / off control). The driving of the transistors Qs and Qr is controlled by the control unit 51.

The control unit 51 receives the reception data by detecting the potential of the resistor R1, the Zener diode ZD1 and the connection point, and the control data is connected to the load terminals L1 and L2 for the illumination load. If it is a signal to turn on, the transistor Qs is driven to excite the set coil 62, and the relay is released.
The switch 64 is closed, and the control data is transferred to the load terminal L1,
If the signal is to turn off the illumination load connected to L2, the transistor Qr is driven to excite the reset coil 63 and the relay switch 64 is opened. Reference numeral 65 is a DIP switch for setting the address of the control terminal device 16 in a hard mode.

Next, the structure of the control terminal 16 will be described with reference to FIGS. In FIGS. 4 and 5, reference numeral 71 denotes a body in which a pair of projecting portions 71a are formed and female threads are formed on the projecting portions 71a. A transmission module 72 is arranged on the body 71 and is covered with a cover 73 from above. The body 7
1 and the cover 73 form a case, and the control terminal 16 is a non-separable type. Transmission module 72
On the printed board 74, a latching relay 61 for controlling the lighting load, a dip switch 65 for address setting,
65 ', a switch S1 for forcibly turning on the latching relay 61 is mounted. In addition, one of the printed board 74 has holes 76, 76 into which the load side terminal portion 75 is inserted.
a is perforated, and the other has holes 78 and 78a into which the terminal portion 77 on the signal line side is inserted. A hole 781 is formed in the side wall of the cover 73, and the cover 73 is fitted to the body 71 by engaging with a protrusion 79 protruding from the side surface of the body 71.

A switch 6 is provided on the upper surface of the cover 73.
Openings 81, 82, and 83 respectively facing 5, 75, and S1 are formed, and a pair of holes 73a are formed. At this time, the screw S1 is inserted through the holes 73a and 76a, screwed into the female screw formed in the protruding portion 71a, and the screw S2 is inserted through the holes 73a and 78a, and formed in the protruding portion 71a. It is designed to be screwed into a female screw.

Storage recesses 84 and 85 are provided at both ends of the cover 73.
Are formed, and a terminal portion 77 connected to the signal line 12 and a terminal portion 75 connected to a load are arranged in the storage recesses 84 and 85. The pair of terminals 75 to which the load is connected is composed of an L-shaped terminal plate 86, a pressing plate 87 for pressing the conductor, and a terminal screw 88 for tightening. Then, the hanging piece 86a of the terminal board 86 is inserted into the hole 76 of the printed board 74 and connected to the circuit pattern. The pair of signal line-side terminals 77 are composed of an L-shaped terminal plate 89, a pressing plate 90 for pressing the conductor, and a tightening terminal screw 91. And the terminal board 89
The hanging plate 89a is inserted into the hole 78 of the printed board 74 and is connected to the circuit pattern. For connection with a signal line or a load, loosen the terminal screws 88 and 91 to open a space between the pressing plates 87 and 90 and the terminal plates 86 and 89, insert a conductor into the space, and connect the terminal screws 88 and 91. Connection can be made by screwing. Also, the removal of the conductor is the reverse operation.

Next, the operation of the first embodiment of the present invention constructed as above will be described. Central controller 11
Transmits a bipolar signal as shown in FIG. 2 via the transmission line 12. The control unit 51 of the control terminal device 16 compares the address data included in the bipolar signal with the address set by the DIP switch 65, and if the two match, the control data is fetched and the If the control data is the data for turning on the lighting load connected to the control terminal 16, the transistor Qs is controlled to conduct, the set coil 62 is excited, and the relay switch 64 is turned on. It is closed and the lighting load connected to the load terminals L1 and L2 is turned on.

On the other hand, if the control data is data for turning off the lighting load connected to the control terminal 16,
The transistor Qr is controlled to conduct, the reset coil 63 is excited, the relay switch 64 is opened, and the illumination load connected to the load terminals L1 and L2 is turned off.

By the way, when the internal latching relay 61 is set to the OFF side during transportation of the control terminal device 16, the control terminal device is connected to the signal line from the central control unit to construct the system. If it is desired to light the lighting load connected to the control terminal 16 on a trial basis, even if the allocation is not completed for the control terminal 16 and the individual switches, the switch S1 is operated. Then close it. Therefore, even if the relay switch 64 is opened, it is possible to turn on the illumination load connected to the load terminals L1 and L2.

Next, a second embodiment of the present invention will be described with reference to FIG.
And FIG. 7 will be described. 6 and 7,
The same parts as those in FIGS. 3 to 5 are designated by the same reference numerals. In the above-described first embodiment, the switch S1 is connected to both ends of the relay switch 64 so that the switch S1 can be closed from the outside of the control terminal device 16.
In the embodiment, the switch S2 is operated between the collector and the emitter of the transistor Qs, or the switch S3 is operated between the output of the power supply circuit 62d and the base of the transistor Qs to operate the switch S2 or S3. Thus, the set coil 62 may be excited to forcibly close the relay switch 64.

Further, one end of the switch S4 is connected to a predetermined terminal of the control section 51, and the other end is grounded.
The relay switch 64 may be forcibly closed by providing the control unit 51 with a function means for making the transistor Qs conductive when the switch 4 is closed.

Such switches S2 to S4 are mounted on the printed circuit board 74 as shown in FIG.
Switch S2 through a small hole 91 formed in the upper surface of 73
Alternatively, S4 to S4 may be operated. Next, a third embodiment of the present invention will be described with reference to FIGS. 9 and 10. The third embodiment has a structure in which a dip switch for setting an address of the control terminal is detachably attached to the control terminal.

FIG. 9 is a perspective view of the control terminal, and FIG. 10 is a block diagram showing an electric circuit inside the control terminal.
9 and 10, reference numeral 100 denotes a control terminal device housing. On the upper surface of the housing 100, a storage recess 102 for detachably storing a dip switch 101 for setting an address of the control terminal is provided.

Storage recesses 103, 1 are provided at both ends of the housing 100.
04 is formed, and these storage recesses 103, 104 are formed.
The terminal portion 105 connected to the signal line 12 and the terminal portion 106 connected to the load are arranged.

The terminal unit 105 is connected to the signal processing unit 111 via the transmission / reception unit 110, the signal processing unit 111 is connected to the load control unit 112, and the load control unit 112 is connected to the terminal unit 106. The DIP switch 101 is detachably connected to the signal processing unit 111.

With the above configuration, the address can be set by the DIP switch 101 and then the DIP switch 101 can be mounted on the housing 100, so that the address can be set at hand and the workability is good.

[0035]

As described above in detail, according to the present invention, the latching relay incorporated from the outside is forcibly turned on.
It is possible to provide a control terminal that can be activated.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a lighting control system to which a control terminal according to the present invention is connected.

FIG. 2 is a diagram showing the format of a voltage signal transmitted from a central control unit via a transmission signal line.

FIG. 3 is a diagram showing a circuit of a control terminal according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of a control terminal device according to the first embodiment.

FIG. 5 is a perspective view of a control terminal according to the first embodiment.

FIG. 6 is a diagram showing a circuit of a control terminal device according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view of a control terminal device according to a second embodiment.

FIG. 8 is a perspective view of a control terminal device according to a second embodiment.

FIG. 9 is a perspective view of a control terminal according to a third embodiment of the present invention.

FIG. 10 is a diagram showing a circuit of a control terminal device according to a third embodiment.

[Explanation of symbols]

11 ... Central control device, 12 ... 2 wire signal line, 13 ... Control terminal device, 14 ... Individual switch, 51 ... Control part, 61 ... Latching relay, 62d ... Power supply circuit, 62 ... Set coil, 63 ... Reset coil , 64 ... Relay switch, S
1 ... switch.

Claims (2)

[Claims] 1. A control terminal device for receiving control data which is time-division multiplexed and transmitted through a signal line from a central control device and outputting a control signal, wherein the control terminal device is one case. The case is formed integrally with each other, and terminal portions to which the signal line, the load and the power supply line are connected are respectively formed at both ends of the case, and a switch that can be operated from the outside is provided on a surface other than the surface on which the control terminal is mounted. The control terminal is characterized in that the switch is connected in parallel between output contacts of a latching relay for opening and closing a load provided inside the terminal. 2. A control terminal device for receiving control data which is time-division-multiplexed transmitted through a signal line from a central control device and outputting a control signal, wherein the control terminal device is a single case. Integrally formed with a case, each of which has terminal portions to which the signal line, the load and the power supply line are connected, is formed at both ends of the case, and a switch which can be pressed from the outside is provided on a surface other than the surface on which the control terminal is attached, When the switch is pressed, a control terminal is configured so that an exciting current is forcibly supplied to a set coil of a latching relay for opening and closing a load provided inside.