JPS5592901A - Safety device for control system - Google Patents
Safety device for control systemInfo
- Publication number
- JPS5592901A JPS5592901A JP16350878A JP16350878A JPS5592901A JP S5592901 A JPS5592901 A JP S5592901A JP 16350878 A JP16350878 A JP 16350878A JP 16350878 A JP16350878 A JP 16350878A JP S5592901 A JPS5592901 A JP S5592901A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- dynamic signal
- dynamic
- safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Testing And Monitoring For Control Systems (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
PURPOSE:To improve the safety of an equipment by exercising a supervision over the pulse output state of a dynamic signal at any time by clock pulses of a computer and then by automatically stopping the operation of a controlled object or performing a safety process when a fault or other abnormal operation occurs. CONSTITUTION:According to a fixed program from control part 1, various-output circuit 2 is controlled and dynamic scan buffer 3 is driven. A dynamic signal from this buffer 3 and a signal from operation stop switch 7 are AND-ed by gate circuit 6 to send to the dynamic signal to selective operation circuit 4 and pulse detection circuit 8 receives a constant-period pulse signal. Operation stop circuit 9 is brought under the control of control part 1 invariably assigned by the dynamic signal from this circuit 4 to control gate circuit 10 when detection circuit 8 detects abnormal operation or malfunction, so that the operation stopping operation of a controlled object or safety process will be performed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16350878A JPS5592901A (en) | 1978-12-29 | 1978-12-29 | Safety device for control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16350878A JPS5592901A (en) | 1978-12-29 | 1978-12-29 | Safety device for control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5592901A true JPS5592901A (en) | 1980-07-14 |
Family
ID=15775189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16350878A Pending JPS5592901A (en) | 1978-12-29 | 1978-12-29 | Safety device for control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5592901A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6099930A (en) * | 1983-11-07 | 1985-06-03 | Matsushita Electric Ind Co Ltd | Combustion control device |
JPS62183202U (en) * | 1986-05-12 | 1987-11-20 | ||
JPS6384602U (en) * | 1986-11-19 | 1988-06-03 |
-
1978
- 1978-12-29 JP JP16350878A patent/JPS5592901A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6099930A (en) * | 1983-11-07 | 1985-06-03 | Matsushita Electric Ind Co Ltd | Combustion control device |
JPH02611B2 (en) * | 1983-11-07 | 1990-01-08 | Matsushita Electric Ind Co Ltd | |
JPS62183202U (en) * | 1986-05-12 | 1987-11-20 | ||
JPS6384602U (en) * | 1986-11-19 | 1988-06-03 | ||
JPH0447650Y2 (en) * | 1986-11-19 | 1992-11-10 |
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