EP 2702459 A1 20140305 - CONTROLLER FOR CONTROLLING A FREQUENCY CONVERTER AND CONTROL METHOD
Title (en)
CONTROLLER FOR CONTROLLING A FREQUENCY CONVERTER AND CONTROL METHOD
Title (de)
STEUERMITTEL ZUM ANSTEUERN EINES FREQUENZUMRICHTERS SOWIE ANSTEUERVERFAHREN
Title (fr)
MOYENS DE COMMANDE POUR PILOTER UN CONVERTISSEUR DE FRÉQUENCE ET PROCÉDÉ DE COMMANDE CORRESPONDANT
Publication
Application
Priority
- DE 102011050017 A 20110429
- EP 2012057666 W 20120426
Abstract (en)
[origin: WO2012146663A1] The invention relates to a controller for controlling a frequency inverter (4) of a positive displacement pump motor (3) of a positive displacement pump (2), said controller comprising a control unit (6) which is designed to produce a control variable (Ys) for a frequency inverter (4) of a positive displacement pump motor (3) depending on a reference variable (W) and a first actual operating parameter (X). According to the invention, the control unit (6) is associated with logical means (7) having a first threshold value defining means (12) that are designed to determine at least one first threshold value (YGrenzmax, YGrenzmin) depending on the first actual operating parameter (X) and/or at least one further actual operating parameter (XH, YH, YHH) that could lead to a failure state of the positive displacement pump (2) when exceeded or fallen short of.
IPC 8 full level
G05B 23/02 (2006.01)
CPC (source: EP US)
F04B 17/03 (2013.01 - EP US); F04B 49/065 (2013.01 - EP US); F04B 49/103 (2013.01 - US); F04B 49/106 (2013.01 - US); F04B 49/20 (2013.01 - US); F04C 2/16 (2013.01 - EP US); F04C 14/08 (2013.01 - EP US); F04C 14/28 (2013.01 - EP US); F04B 2203/0204 (2013.01 - EP US); F04C 2240/403 (2013.01 - EP US)
Citation (search report)
See references of WO 2012146663A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011050017 A1 20121031; CN 103608738 A 20140226; CN 103608738 B 20160817; EP 2702459 A1 20140305; JP 2014512626 A 20140522; JP 6016889 B2 20161026; US 10359040 B2 20190723; US 2014044561 A1 20140213; WO 2012146663 A1 20121101
DOCDB simple family (application)
DE 102011050017 A 20110429; CN 201280020665 A 20120426; EP 12723626 A 20120426; EP 2012057666 W 20120426; JP 2014506868 A 20120426; US 201214113812 A 20120426