Title:
METHOD FOR AUTOMATIC MUTUAL ALTERNATION BETWEEN PUMPS
Document Type and Number:
WIPO Patent Application WO/2012/173551
Kind Code:
A3
Abstract:
The invention relates to a method for automatic mutual alternation between an arbitrary number of pumps by the control of an individual pump, which makes use of a start condition for a state change from an inactive state of the pump into an active state of the pump to be performed, as well as makes use of a stop condition for a state change from said active state into said inactive state to be performed. According to the invention, the method comprises a sub method (Find start condition) that comprises the step of, after a predetermined stage, arbitrarily changing the start condition of the individual pump within predetermined limits.
Inventors:
LARSSON MARTIN (SE)
FULLEMANN ALEXANDER (SE)
FULLEMANN ALEXANDER (SE)
Application Number:
PCT/SE2012/050579
Publication Date:
January 24, 2013
Filing Date:
May 31, 2012
Export Citation:
Assignee:
XYLEM IP HOLDINGS LLC (US)
LARSSON MARTIN (SE)
FULLEMANN ALEXANDER (SE)
LARSSON MARTIN (SE)
FULLEMANN ALEXANDER (SE)
International Classes:
E03F5/22; F04D15/00; F04D15/02; G05B13/02
Foreign References:
| US7195462B2 | 2007-03-27 | |||
| DE19927365A1 | 2000-02-24 |
Other References:
"User manual GSP201 En ITT Water & Wastewater", RANDOM START LEVEL, 15 October 2008 (2008-10-15), pages 61
THOMAS THUNBERG: "Compact Pump V5.0.2-0", MANUAL ABB AB:THOMAS THUNBERG, 23 September 2009 (2009-09-23), pages 17, XP008174114
THOMAS THUNBERG: "Compact Pump V5.0.2-0", MANUAL ABB AB:THOMAS THUNBERG, 23 September 2009 (2009-09-23), pages 17, XP008174114
Attorney, Agent or Firm:
BRANN AB (S- Stockholm, SE)
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