EP1109177A2 - Procédé pour commuter une charge - Google Patents

Procédé pour commuter une charge Download PDF

Info

Publication number
EP1109177A2
EP1109177A2 EP00127552A EP00127552A EP1109177A2 EP 1109177 A2 EP1109177 A2 EP 1109177A2 EP 00127552 A EP00127552 A EP 00127552A EP 00127552 A EP00127552 A EP 00127552A EP 1109177 A2 EP1109177 A2 EP 1109177A2
Authority
EP
European Patent Office
Prior art keywords
voltage
load
time
switching
time interval
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.)
Granted
Application number
EP00127552A
Other languages
German (de)
English (en)
Other versions
EP1109177B1 (fr
EP1109177A3 (fr
Inventor
Michael Abert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2000113928 external-priority patent/DE10013928C2/de
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1109177A2 publication Critical patent/EP1109177A2/fr
Publication of EP1109177A3 publication Critical patent/EP1109177A3/fr
Application granted granted Critical
Publication of EP1109177B1 publication Critical patent/EP1109177B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H2047/008—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current with a drop in current upon closure of armature or change of inductance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H2047/046—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits

Definitions

  • the invention relates to a method for switching a load, to which a switching voltage can be supplied.
  • the invention relates to a circuit arrangement for performing the method.
  • the present invention is therefore based on the object specify a procedure of the type mentioned at the outset that is independent on the type of load to be switched, be it one ohmic load, a lamp load, a capacitive load, a inductive load with or without moving parts, one switching enables this load.
  • a circuit arrangement specify which to perform the procedure suitable is.
  • An embodiment of the invention according to that specified in claim 2 Measures result in a lower energy requirement with switched inductive load with moving parts and also speeds up shutdown processes.
  • the invention is particularly in digital output units for programmable logic controllers can be used.
  • Essential components of the circuit arrangement according to FIG. 1 are a sensor unit 1, which is provided for the detection of the change in a load current 11, a controllable switch 3 in the form of a MOSFET switch and a voltage generation unit 4.
  • a DC supply voltage 5 can be supplied to the voltage generation unit 4 , from which the voltage generating unit 4 generates 6 switching voltages depending on a control signal 6 generated by the sensor unit 1 and supplied to the voltage generating unit 4.
  • two switching voltages are provided, a maximum voltage of 48 VDC and a holding voltage of 16 VDC, which are generated from a supply voltage of 24 VDC.
  • a control signal 9 can be fed to the controllable switch 3 via a control output 7 of a programmable logic controller and via potential-separating means 8, an activated control signal 9 closing the switch 3. This has the effect that a switching voltage 10 is supplied to the load 2 and the load current 11 flows through the load 2 via a ground connection M. Further components of the circuit arrangement such as storage choke 12, quenching element 13 and overvoltage protection device 14 are of no significance for the invention and therefore do not need to be explained in more detail.
  • FIG. 2 in which current and voltage curves are shown.
  • the load 2 (FIG. 1) is supplied with an abrupt maximum voltage Um, which, for. B. corresponds to twice the nominal load voltage Un.
  • This maximum voltage Um causes a rapid increase in a load current I.
  • the sensor unit 1 detects a current shoulder Ss in the load current profile, which, for. B. caused by the movement of an anchor and the resulting change in flow.
  • the sensor unit 1 then activates the control signal 6, as a result of which the voltage generating unit 4 at the time T1 suddenly reduces the switching voltage from the maximum voltage Um to a holding voltage Uh, which in a practical exemplary embodiment of the invention is two thirds of the nominal load voltage Un.
  • the inductive load 2 Due to the increased switching voltage Um between times T0 and T1 and the reduced switching voltage Uh from time T1, on the one hand, the inductive load 2 is switched quickly and, on the other hand, the energy requirement during switched load 2 is reduced, with a holding current from time T2 in the steady state Ih flows through the load 2.
  • the time interval is selected in accordance with the technical specifications in the data sheets of the inductive load to be switched so that it is ensured that the current shoulder Ss occurs within this predetermined time interval. In this case, the circuit arrangement according to FIG.
  • a time interval monitoring unit is to be provided instead of the sensor unit 1. It can happen that e.g. B. an armature in a coil can not be moved because the movement is blocked due to a disturbance. In this case, there is no current shoulder and in order to prevent the maximum voltage from being constantly applied to the coil and thereby damaging the coil, it is advantageous to reduce the maximum voltage to the holding voltage after a predefinable time interval.
  • FIG. 3a shows one Switching voltage in the form of a DC voltage
  • the Maximum voltage Um twice the nominal load voltage Un and the holding voltage Uh two thirds of this nominal load voltage Un is.
  • Such a DC voltage with variable amplitude generates the voltage generating unit 4 ( Figure 1) that the switching voltage varies depending on the control signal 6.
  • Figure 3b shows a clocked version, with one Time T3 is the DC component of the withstand voltage of two Third of the nominal load voltage with an alternating voltage corresponding amplitude and clock rate is achieved.
  • Such a pulsating DC voltage with constant amplitude and variable pulse-pause ratio can advantageously be used as a switching voltage in a circuit arrangement shown in FIG. 4 for switching a plurality of inductive loads with movable parts.
  • the control of only one output channel is shown in FIG.
  • the same parts in Figures 4 and 1 are provided with the same reference numerals.
  • a voltage generating unit 4 ' connects the maximum voltage Um (FIG. 3b) to the inductive load 2 via the controllable switch 3 and a sensor unit 1'.
  • the sensor unit 1 In the event that the sensor unit 1 'detects a current shoulder and / or a predeterminable time interval has expired, the sensor unit 1' switches an AND logic element 14 to a pulse-pause signal 15, as a result of which the controllable switch 3 switches the maximum voltage Um in accordance with the Pulse-pause ratio (duty cycle) switches this pulse-pause signal on or off.
  • This switching on or off of the maximum voltage Um in accordance with the duty cycle that can be predetermined by the sensor unit generates a constant component from time T3 (FIG. 3b), which corresponds to the holding voltage Uh (FIG. 3a).
  • a circuit arrangement for switching a load, independently on the type of load to be switched, be it an ohmic one Load, a capacitive load, an inductive load with or without movable parts is shown in simplified form in FIG.
  • the in Figures 1 and 5 the same parts are with the same reference numerals Mistake.
  • a time generator 15 which is used to specify evaluation time intervals is provided.
  • a first evaluation time interval is intended to detect whether the to switching load an inductive or other load, e.g. B. is an ohmic, capacitive or lamp load. If one inductive load is detected is a second time interval provided in which it is detectable whether the inductive Load is an inductive load with or without moving parts.
  • the respective start and end of the time intervals shows the time generator 15 of the voltage generating unit 4 that depend on these time intervals the control signal 6 of the load 2 via the switch 3, as in It is shown below that corresponding switching voltages are supplied.
  • FIG. 6 To clarify the function and effect the circuit arrangement shown in FIG Figure 6 referred in which current and voltage curves are shown, in Figure 6a voltage and current profiles an ohmic, a capacitive and a lamp load between a switch-on time tl and a switch-off time t4, in Figure 6b a voltage and current profile an inductive load with no moving parts between them At times and in Figure 6c a voltage and current profile an inductive load with moving parts between them Points in time are shown.
  • the voltage generating unit 4 first increases the switching voltage to a maximum switching voltage Um in a step-wise manner or clocked, as a result of which the inductive load is switched quickly is effected.
  • the sensor unit 1 In order to recognize whether the inductive load is an inductive load with movable parts or an inductive load without movable parts, it is necessary that the sensor unit 1 during a predeterminable second time interval following the first time interval between the time t2 and a third time t3 continues to record the load current.
  • the voltage generating unit 4 reduces the switching voltage in a step-wise or clocked manner to a holding voltage from the third time t3 to the switch-off time t4 Uh, which is less than the nominal load voltage Un, which reduces the energy consumption.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Amplifiers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Dc-Dc Converters (AREA)
EP00127552A 1999-12-16 2000-12-15 Procédé pour commuter une charge Expired - Lifetime EP1109177B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19961029 1999-12-16
DE19961029 1999-12-16
DE10013928 2000-03-21
DE2000113928 DE10013928C2 (de) 2000-03-21 2000-03-21 Verfahren zum Schalten einer Last

Publications (3)

Publication Number Publication Date
EP1109177A2 true EP1109177A2 (fr) 2001-06-20
EP1109177A3 EP1109177A3 (fr) 2002-04-17
EP1109177B1 EP1109177B1 (fr) 2004-04-28

Family

ID=26004935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127552A Expired - Lifetime EP1109177B1 (fr) 1999-12-16 2000-12-15 Procédé pour commuter une charge

Country Status (4)

Country Link
EP (1) EP1109177B1 (fr)
AT (1) ATE265738T1 (fr)
DE (1) DE50006237D1 (fr)
ES (1) ES2219253T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2633539A4 (fr) * 2010-10-25 2014-12-24 Xio Inc Procédé et appareil d'activation de solénoïde configurables
US9013854B2 (en) 2001-02-14 2015-04-21 Xio, Inc. Configurable solenoid actuation method and apparatus
EP3072138A4 (fr) * 2013-11-20 2017-06-21 Eaton Corporation Solénoïde et procédé de commande associé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817770A1 (de) * 1988-05-26 1989-11-30 Daimler Benz Ag Einrichtung zur getakteten ansteuerung eines elektromagnetischen ventils
JP3616223B2 (ja) * 1996-12-27 2005-02-02 株式会社ボッシュオートモーティブシステム 電磁弁駆動装置
DE19719602A1 (de) * 1997-05-09 1998-11-12 Fahrzeugklimaregelung Gmbh Elektronische Steuerschaltung
DE19734895C2 (de) * 1997-08-12 2002-11-28 Siemens Ag Vorrichtung und Verfahren zum Ansteuern wenigstens eines kapazitiven Stellgliedes
DE19821561A1 (de) * 1998-05-14 1999-11-18 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9013854B2 (en) 2001-02-14 2015-04-21 Xio, Inc. Configurable solenoid actuation method and apparatus
EP2633539A4 (fr) * 2010-10-25 2014-12-24 Xio Inc Procédé et appareil d'activation de solénoïde configurables
EP3072138A4 (fr) * 2013-11-20 2017-06-21 Eaton Corporation Solénoïde et procédé de commande associé

Also Published As

Publication number Publication date
ATE265738T1 (de) 2004-05-15
DE50006237D1 (de) 2004-06-03
EP1109177B1 (fr) 2004-04-28
ES2219253T3 (es) 2004-12-01
EP1109177A3 (fr) 2002-04-17

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