JPH0764407B2 - Conveyor group control device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency stop system in a conveyor group controller.

2. Description of the Related Art Conventionally, in load conveyors composed of multiple conveyors and controllers for conveyor groups such as automatic warehouses, if only one conveyor is stopped in an emergency, it will be conveyed by other conveyors. Since there is a danger of congestion of the load and collapse of the load, one control block is formed by multiple conveyors,
All the conveyors in the control block are stopped by the hardware circuit by operating the emergency stop button provided in the control block.

The configuration of a conventional conveyor group control device will be described below with reference to FIG. In FIG. 5, reference numeral 1 is a conveyor, and each conveyor 1 is distributed and controlled by each child control panel 3 which is controlled by the parent control panel 2. Reference numeral 4 denotes an emergency stop button of the conveyor 1. In order to reliably stop all of the conveyors 1 in the control block 5 composed of a plurality of conveyors 1 by hardware by operating one emergency stop button 4. The emergency stop buttons 4 are connected to the slave control boards 3 in the control block 5 by cables 6 respectively. When the emergency stop button 4 is operated, the control block 5
All the conveyors 1 inside are stopped by each child control board 3,
The fact that each conveyor 1 has been stopped is transmitted from each slave control panel 3 to the master control panel 2 via the communication cable 7. The number of emergency stop buttons 4 is one to a plurality provided in the control block 5, and often does not match the number of conveyors 1.

Problems to be Solved by the Invention However, in such a conventional configuration, the emergency stop button 4
Since there are a large number of cables 6 for connecting the respective child control boards 3 and it takes time and effort to route the cables 6, there is a problem in that work mistakes occur and the cost of the conveyor drive device increases. Further, since the number of emergency stop buttons 4 installed in the control block 5 is different in each control block 5, it is necessary to change the design of each slave control panel 3, which results in a design change error and a large design time, resulting in reduced reliability. This caused the cost to increase.

The present invention solves the above problems, and an object of the present invention is to provide a conveyor group control device in which the number of cables is reduced and the reliability is improved without the need to change the design each time depending on the number of emergency stop buttons. It is what

Means for Solving the Problems In order to solve the above problems, the present invention provides a control panel for controlling a conveyor and a plurality of the conveyors constituting one control block for stopping via each of the control panels. An emergency stop button provided, and an emergency stop chassis provided for each control panel to relay the emergency stop button and the control panel, the emergency stop chassis in one control block are connected in series, and The emergency stop operation signal of the emergency stop button is transmitted to all the control panels in the one control block.

Operation According to the above configuration, by connecting the emergency stop button provided on each control panel and the emergency stop chassis that relays the control panel in series, the emergency stop operation signals of one emergency stop button are transmitted to the respective emergency stop buttons. It is transmitted to each control panel through the chassis, and all the conveyors in one control block are stopped. Therefore, it is possible to reduce the number of cables without having to lay a cable from one emergency stop button to each control panel as in the past, and because the control panel supports the emergency stop chassis, the emergency stop button There is no need to change the design depending on the number.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the configuration of the conventional example shown in FIG.
The same reference numerals are given to the parts and the description thereof will be omitted.

FIG. 1 shows the configuration of a conveyor group control device according to the present invention.
In FIG. 1, 8 is an emergency stop box, and as shown in FIG. 2, an emergency stop button 4 connected between the T1 terminal and the T2 terminal, and an illumination lamp 9 connected in series between the T3 terminal and the T4 terminal. And a lamp operation switch 10 for the illumination lamp 9. 11 is an emergency stop chassis, and a child control panel 3
It is provided for each and relays the child control panel 3 and the emergency stop box 8. As shown in FIG. 3, the emergency stop chassis 11 is fixed with first to fourth connectors (hereinafter, abbreviated as CN-1, CN-2, CN-3, CN-4) to which external cables are connected. As shown in FIG. 2, inside the emergency stop chassis 11, the P1 terminal of CN-1, the P1 terminal of CN-3 and the P1 terminal of CN-4 are connected, and the CN-1 P2 terminal and CN−
2 P1 terminal, CN-3 P2 terminal and CN-4 P2 terminal are connected, CN-1 P3 terminal and CN-2 P2 terminal, CN-2 P3 terminal and CN-3 P3 terminal, The P4 terminal of CN-2 and the P3 terminal of CN-4 are connected.

A first cable 12 connecting the child control panel 3 and the emergency stop chassis 11 is connected to the CN-1. First cable 12
The CN-1 P1 terminal and child control panel 3 DC power supply positive (P) terminal, the CN-1 P2 terminal and child control panel 3 DC power supply negative (N) terminal, and the CN-1 P3 terminal And the input (ES) terminal of the emergency stop signal of the slave control panel 3 are connected. CN−
2 has a second cable 13 that connects to the emergency stop box 8
Is connected, and P1 of CN-2 is connected by the second cable 13.
Terminal and T3 terminal of emergency stop box 8, also P2 terminal and T4
Terminal, P3 terminal and T1 terminal, P4 terminal and T2 terminal are connected respectively. Between the emergency stop chassis 11 is CN-3 and CN
-4 of the same terminal are connected in series by the third cable 14. The CN-3 of the first emergency stop chassis 11A arranged at the end of the emergency stop chassis 11 connected in series is externally connected to the P1 terminal and the P3 terminal at the third end and is the third arranged at the other end.
Emergency stop chassis 11C CN-4 is externally connected to P2 terminal and P3
The terminals are connected.

The sequence of the above configuration is shown in FIG. DC power is supplied to the illuminating lamp 9 and its lamp operating switch 10 from the slave control panel 3, and the illuminating lamp 9 illuminates when the lamp operating switch 10 is pressed. The emergency stop button 4 is connected in series with the normally-on b contact and is input to the ES terminal of each slave control panel 3. Therefore, when one emergency stop button 4 is operated, the input signal a to each ES terminal is interrupted. Therefore, each slave control panel 3 determines that the emergency stop button 4 has been operated and stops each conveyor 1. .

Thus, the emergency stop chassis of the same configuration relaying the slave control panel 3 of the same configuration and the emergency stop box 8 of the same configuration, respectively.
It is possible to transmit the emergency stop operation signal at the time of operating the emergency stop button 4 to all the slave control panels 3 via each emergency stop chassis 11 by simply connecting the 11 in series with the cable 14 to connect the connectors. All the conveyors 1 can be stopped simultaneously in each child control panel 3, and the fact that the conveyor 1 is stopped can be transmitted from each child control panel 3 to the parent control panel 2 via the communication cable 7. . Further, the number of cables can be reduced as compared with the case where the emergency stop button 4 is connected to each child control panel 3 as in the conventional case, the cable connection work can be made the same, and the configuration of the child control panel 3 is also possible. Since it is no longer necessary to change by changing the emergency stop box 8, that is, the emergency stop button 4, it is possible to reduce mistakes and time due to design changes. Therefore, the reliability of the conveyor device can be improved and the cost can be reduced.

If the emergency stop box 8 is not connected to the emergency chassis 11 such as when only one emergency stop box 8 is provided in the control block 5, connect the P3 and P4 terminals of the CN-2 externally. This can be dealt with, and in this case also, it is not necessary to change the configurations of the child control panel 3 and the emergency stop chassis 11.

As described above, according to the present invention, the emergency stop chassis for relaying between the conveyor control panel and the emergency stop button is provided, and by connecting a plurality of the emergency stop chassis in series, the emergency stop button Since the emergency stop operation signal is transmitted to all the control panels via the respective emergency stop chassis, it is possible to stop all the conveyors in the control block by hardware by operating the emergency stop button. Furthermore, it is possible to reduce the number of cables compared to the case where cables are laid from each emergency stop button to each control panel, and the work procedure for cable laying can be made the same. It is possible to eliminate the need to change by increasing or decreasing the number of stop buttons, reduce mistakes due to design changes and design time, improve reliability and reduce cost.

[Brief description of drawings]

FIG. 1 is a block diagram of a conveyor group control device showing an embodiment of the present invention, FIG. 2 is a wiring diagram of main parts of the conveyor group control device, and FIG. 3 is an emergency stop of the conveyor group control device. FIG. 4 is a configuration diagram of the chassis, FIG. 4 is a main sequence for explaining the operation of the control device of the conveyor group, and FIG. 5 is a configuration diagram of the conventional control device of the conveyor group. 1 ... conveyor, 3 ... child control panel, 4 ... emergency stop button, 5
… Control blocks, 11… Emergency stop chassis, 12, 13, 14… Cables.

Claims (1)

[Claims] 1. A control panel for controlling a conveyor, an emergency stop button provided for stopping a plurality of the conveyors constituting one control block via each control panel, and a control panel provided for each control panel. An emergency stop chassis relaying the emergency stop button and a control panel is provided, the emergency stop chassis in one control block are connected in series, and an emergency stop operation signal of one emergency stop button is the one control block. Conveyor group control device configured to be transmitted to all control panels inside.