JPS5697108A - Control method of number of set of pump - Google Patents
Control method of number of set of pumpInfo
- Publication number
- JPS5697108A JPS5697108A JP5280A JP5280A JPS5697108A JP S5697108 A JPS5697108 A JP S5697108A JP 5280 A JP5280 A JP 5280A JP 5280 A JP5280 A JP 5280A JP S5697108 A JPS5697108 A JP S5697108A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- command
- pumps
- given value
- water
- 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
- Control Of Positive-Displacement Pumps (AREA)
- Flow Control (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE: To reduce the frequency of on/off, by sampling the water level with one period, calculating the water level and its change rate, and driving pumps only when the rate exceeds a given value.
CONSTITUTION: Water delivered to a pump 1 is fed to a reservoir 3 with pumps P1WPn and water is supplied to users. The water level signal from a water level meter 4 is operated 5, an on/off admitting command is produced and the number of operating sets is controlled 6 with the water level. In this case, when the variance in water level is gradual, no operator 5 makes output, and only when the change rate of the water level exceeds a given value, the command in increase/decrease is permitted, and if the water level changes gradually toward the same direction, interruption is made when the water level exceeds a given value and the command for increase/decrease of the number of sets is permitted. Thus, the frequency of on/off of pumps can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP528079A JPS5916898B2 (en) | 1980-01-07 | 1979-01-20 | Automatic assembly method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP528079A JPS5916898B2 (en) | 1980-01-07 | 1979-01-20 | Automatic assembly method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5697108A true JPS5697108A (en) | 1981-08-05 |
Family
ID=11606818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5280A Pending JPS5697108A (en) | 1979-01-20 | 1980-01-07 | Control method of number of set of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5697108A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127185U (en) * | 1982-02-23 | 1983-08-29 | 株式会社明電舎 | Pump operation number control device |
-
1980
- 1980-01-07 JP JP5280A patent/JPS5697108A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127185U (en) * | 1982-02-23 | 1983-08-29 | 株式会社明電舎 | Pump operation number control device |
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