JPH10144170A - Control panel with wrong operation preventive function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control panel which never converts the operation mode against the intension of a worker who operated the control panel at first. SOLUTION: To each panel of the control panels 1, 2, and 3 of control object apparatuses, an operation switch 4 to select one out of plural operation modes, and a display means 5 to display the selected operation mode, are provided. Furthermore, a lock circuit to fix a specific mode as the present operation mode in the control circuit system 7 is provided to each panel of the control panels 1, 2, and 3. Consequently, the lock circuit is made possible to carry out the lock releasing operation only on the control panel selecting a specific operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology of an operation panel such as a mechanical device, and more particularly to an operation panel having an erroneous operation prevention function which does not operate erroneously.

[0002]

2. Description of the Related Art Conventionally, in a factory, an operation panel is arranged to control a machine or the like arranged as a production facility. In the case of automatic operation of a plurality of machinery, etc., the operation panel for remote operation is centrally located at a position away from each machine in order to perform comprehensive operation control. The sub operation panel is separately arranged near each machine. Further, when a long machine is arranged along the production line, a plurality of sub-operation panels are arranged.

[0003]

By the way, in the above-mentioned configuration, at the time of maintenance of the mechanical device, the switch of the operation panel is switched from the automatic mode to the manual mode, and the maintenance work is performed while manually operating each mechanical device. I have. In the conventional operation panel, the mode switching operation is to invert the switch knob to either the automatic mode position or the manual mode position, and the current operation mode is displayed in the direction indicated by the switch knob. However, when a worker operates a switch on either the main operation panel or the sub operation panel and performs maintenance work in the manual mode, another operator operates the operation panel operated by the previous worker. If the switch operation is performed by mistake on the other operation panel, the mechanical device operates against the intention of the operator who is performing maintenance, and there is a danger of an accident occurring.

[0004] The present invention is to solve the above problems,
It is an object of the present invention to provide an operation panel with an erroneous operation prevention function that does not switch the operation mode contrary to the intention of the operator who operated the operation panel first.

[0005]

In order to solve the above-mentioned problems, an operation panel with an erroneous operation prevention function according to the present invention is provided with a plurality of operation panels connected to a device to be controlled, and each operation panel has a plurality of operation panels. An operation switch for selectively selecting a mode and a display means for displaying the selected operation mode are provided, and a control circuit system in which the operation mode of the operation panel on which the latest operation has been performed is the current operation mode in the control circuit system is provided. The operation panel is provided with a lock circuit that fixes the specific operation mode as the current operation mode in the control circuit system only when a specific operation mode used for maintenance or the like is selected, and sets the lock circuit to the specific operation mode. The lock release operation can be performed only on the selected operation panel.

[0006] Each operation panel is provided with second display means for displaying the operation panel on which the lock circuit is activated.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a plurality of operation panels 1,
Reference numerals 2 and 3 are connected to devices to be controlled (not shown) such as mechanical devices, and each of the operation panels 1, 2 and 3 has a plurality of operation modes, in this embodiment, an automatic mode and a manual mode. An operation switch 4 for alternately selecting the operation mode and a lighting display device 5 such as a lamp device or an LED device as display means for displaying the selected operation mode are provided. As the operation switch 4, a spring return type select switch for holding a middle point is used.

The control circuit system 6 composed of the plurality of control panels 1, 2, 3 constitutes a control circuit system 6 in which the operation mode of the operation panel on which the latest operation has been performed is the current operation mode of the control circuit system. doing. Each operation panel 1, 2, 3
A lock circuit is provided for fixing the manual mode as the current operation mode in the control circuit system 6 only when a specific operation mode used for maintenance or the like, here, the manual mode is selected. The lock circuit is configured so that the lock release operation can be performed only on the operation panel 1 (2 or 3) in which the manual mode is selected. Each operation panel 1,
Each of 2 and 3 is provided with a second lighting display device 7 such as a lamp device or an LED device as second display means for displaying the operation panel on which the lock circuit is activated.

The operation of the above configuration will be described below.
Normally, the operation switches 4 of the operation panels 1, 2, 3
Is in the state of selecting the automatic mode. At the time of maintenance, the operator operates the nearby operation panel (No. 1 in this case) 1 among the operation panels 1, 2, and 3, and switches the operation switch 4 to the manual mode.

At this time, the lighting display device 5 visually indicates that the manual mode has been selected, the manual mode is fixed by the lock circuit of the operation panel 1, and the other operation panel (here, No. 2 or No. 2) is selected. 3) In 2 and 3, the operation mode cannot be switched. For this reason, there is no danger of another operator erroneously switching the operation mode on the other operation panels 2 and 3.

In each of the operation panels 1, 2, 3, the second lighting display device 7 visually indicates that the manual mode has been selected in the operation panel 1 of No. 1. For this reason, another worker who wants to switch the operation mode to the automatic mode goes out to the operation panel 1 displayed by the second lighting display device 7 and performs a safety check with respect to the worker who switched to the manual mode. Unlock the operation panel 1 of No. 1 and switch the operation mode to the automatic mode.

Therefore, by displaying the operation panel 1 in which the lock circuit is activated by the second lighting display device 7,
An operation mode switching operation by another operator can be performed promptly and safely.

[0013]

As described above, according to the present invention, in the operation panel operated to switch to the specific operation mode,
By fixing the operation mode by the lock circuit,
It is possible to prevent the danger of another operator erroneously switching the operation mode on another operation panel, and to display the operation panel on which the lock circuit is activated by the second display means, thereby promptly and safely operating the other operator. Mode switching can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an operation panel with an erroneous operation prevention function according to an embodiment of the present invention.

[Explanation of symbols]

 1, 2, 3 operation panel 4 operation switch 5 lighting display device 6 control circuit system 7 second lighting display device

Claims (2)

[Claims] A plurality of operation panels connected to a device to be controlled; an operation switch for selectively selecting a plurality of operation modes on each operation panel; and a display unit for displaying the selected operation mode. The control circuit system is configured so that the operation mode of the operation panel on which the latest operation has been performed is the current operation mode of the control circuit system.Specific operation is specified only when a specific operation mode used for maintenance etc. is selected for each operation panel A lock circuit for fixing the operation mode as the current operation mode in the control circuit system is provided, and the lock circuit is configured so that the unlock operation can be performed only on the operation panel in which the specific operation mode is selected. With operation panel. 2. The operation panel with an erroneous operation prevention function according to claim 1, wherein each operation panel is provided with second display means for displaying an operation panel on which a lock circuit is activated.