EP1276120A2 - Appareil de commande d'un électroaimant - Google Patents

Appareil de commande d'un électroaimant Download PDF

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Publication number
EP1276120A2
EP1276120A2 EP20020014583 EP02014583A EP1276120A2 EP 1276120 A2 EP1276120 A2 EP 1276120A2 EP 20020014583 EP20020014583 EP 20020014583 EP 02014583 A EP02014583 A EP 02014583A EP 1276120 A2 EP1276120 A2 EP 1276120A2
Authority
EP
European Patent Office
Prior art keywords
clock
voltage
resistor
switch
solenoid
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
EP20020014583
Other languages
German (de)
English (en)
Other versions
EP1276120A3 (fr
EP1276120B1 (fr
Inventor
Hermann Hoepken
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.)
KA Schmersal GmbH and Co KG
Original Assignee
KA Schmersal GmbH and Co KG
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
Application filed by KA Schmersal GmbH and Co KG filed Critical KA Schmersal GmbH and Co KG
Publication of EP1276120A2 publication Critical patent/EP1276120A2/fr
Publication of EP1276120A3 publication Critical patent/EP1276120A3/fr
Application granted granted Critical
Publication of EP1276120B1 publication Critical patent/EP1276120B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/60—Systems

Definitions

  • the invention relates to a device for controlling a Electromagnet according to the preamble of claim 1.
  • electromagnets are used which are in accordance with the Control of a solenoid operable armature, due to its Position locks or unlocks a door. It must be ensured that the Anchor moves correctly during a tightening step, and that one of the Solenoid applied magnetic force for holding the armature in its position during a holding section at the lowest possible applied Operating voltage not reduced so much that the armature is damaged by external disturbances, especially vibrations, drops.
  • a predetermined voltage loading of the solenoid carries a Control of the current flowing through the solenoid with respect to a Energy loss or the operating temperature of the solenoid, however, no Invoice, so that it is advantageous, the voltage application at a Heating of the solenoid and / or when certain current values are reached to interrupt a loss of energy due to heat generation of the To prevent solenoids.
  • the object of the invention is to provide a device for driving a Electromagnets according to the preamble of claim 1, which simple components used and has a simpler structure.
  • a different maximum current in tightening and holding sections is thereby achieved in that in a second clock, at least with the first clock overlaps, a second ohmic resistor in parallel with the first resistor in the circuit for generating a pull-in current is switchable.
  • Fig. 1 shows a simplified and schematic representation of a Wiring diagram of an embodiment of a circuit for driving a Electromagnet.
  • Fig. 2 shows an example of a detailed circuit diagram of the embodiment of Fig. 1.
  • Fig. 3 shows an example of a detailed circuit diagram of another Embodiment of Fig. 1.
  • the circuit of Fig. 1 comprises an electromagnet with a solenoid 1, which can be acted upon by a DC voltage of a voltage source 2 and for actuating an associated spring-loaded armature 3 is used.
  • One with the voltage source 2 connected clock 4 is connected to a serial with the Solenoid 1 switched switch 5 is coupled, whereby the switch. 5 is closed and opened according to the clock of the clock 4. in the closed state of the switch 5 is located on the solenoid 1 the DC voltage of the voltage source 2 on.
  • the current detection switch 7 is parallel to the first resistor 6 and serially coupled to the switch 5 and switches the voltage source 2 of the Solenoids 1 by opening the switch 5 temporarily from, as long as predetermined, flowing through the solenoid 1 current through the Current detection switch 7 is detected. If the proven current falls again, the current detection switch 7 stops its influence on the switch 5 and this is again operated by the clock 4. The through the solenoid 1 flowing current is thus by the switching of the Stromnachweisschalters. 7 limited by the current detection switch 7 by the first ohmic resistance 6 flowing current is detected.
  • the size of the first resistor 6 in conjunction with the current detection switch 7 selected so that through the solenoid 1, a current can flow, which is sufficient to the armature. 3 to hold in his position - it then flows then a holding current.
  • Second ohmic resistor 9 parallel to the first resistor 6 in the circuit via a switch 10 switchable, wherein the second resistor 9 coupled to ground becomes.
  • the size of the second resistor 9 is chosen so that a smaller Total resistance results.
  • the size of the first resistor 6 greater than that of the second resistor 9.
  • a freewheeling circuit for the solenoid 1 is provided, the one comprises parallel to the solenoid 1 coupled freewheeling diode 11.
  • the current through the Solenoid 1 is at an open switch 5 via a through the inductance of the Solenoids 1 certain time maintained and by the freewheeling diode 11th shorted.
  • the freewheeling circuit optionally a Series connection of other diodes and / or transistors include.
  • the voltage source 2 as DC voltage control device for one via the terminals 12, 13 coupled operating AC voltage configured.
  • a rectifier 14 is provided to the two mutually connected Zener diodes 15, 16 and a capacitor 17th are coupled in parallel.
  • the capacitor 17 is connected in series with ground.
  • the DC voltage control device further comprises one with the Capacitor 17 coupled diode 18, which follows a field effect transistor 19.
  • the Field effect transistor 19 is connected via two series connected, serially with the Capacitor 17 connected resistors 20, 21 connected, one to ground coupled limiter diode 22 between the two resistors 20, 21 and the field effect transistor 19 is provided. When closed, it switches the field effect transistor 19 has a resistor 23 and a ground-coupled Capacitor 24 as a filter in the circuit of DC voltage regulation device.
  • the clock 4 for clocked closing of this Embodiment designed as a field effect transistor switch 5, comprises a clock NAND gate 25, from which an input to the voltage source 2 coupled to the power supply and further applied to a high level is.
  • the output of the clock NAND gate 25 is via a Circuit combination of an ohmic clock resistor 26, a Clock diode 27 and a clock capacitor 28 on the other Input of the clock NAND gate 25 returned.
  • the Circuit combination of the clock resistor 26 the clock diode 27th and the clock capacitor 28 becomes a constant clocked timing reaches the output of the clock NAND gate 25, the Charging the clock capacitor 28 is slower than discharging.
  • the output of the clock 4 is also connected to a SET input of a two NAND gate 29, 30 comprising flip-flops 31, which due to the am SET input signal of the clock 4, the switch 5 by means of Clocked at the Q output opens or closes.
  • the current detection switch 7 is formed as a transistor whose base-emitter path detects the voltage on the circuit.
  • the emitter of the transistor is connected to ground, and the collector is both ohmic Resistor 32 with high potential as well as with a RESET input of the Flip-flops 31 coupled.
  • the parallel to the resistor 6 and multitudell to Solenoid 1 coupled transistor becomes conductive when the voltage across the resistor 6 exceeds the voltage between the base and emitter of the transistor. Then changes the voltage applied to the RESET input of the flip-flop 31 signal because the over the current flowing through the resistor 32 via the current detection switch 7 after Mass drains off.
  • the flip-flop 31 then opens the switch 5, and the application of DC voltage to the solenoid 1 is temporarily interrupted.
  • the clocked connection of the resistor 9 takes place in the cycle of the another clock 8, which includes a clock NAND gate 33.
  • the exit of the clock NAND gate 33 is connected via a combination of two parallel ohmic clock resistors 34, 35, a clock diode 36th and a clock capacitor 37 again to an input of the clock NAND gate 33, with another input of the clock NAND gate 33 can be beaufschagbar with a positive voltage.
  • the Circuit combination of the clock resistors 34, 35, the clock diode 36 and the clock capacitor 37 is a constant, clocked Timing achieved, the clock of the clock 8 is lower than the clock of Clock 4 is.
  • the clock capacitor 37 is discharged slower as charged, for example, if the size of the resistor 35 of the ten times the size of the resistor 34, the value of the Resistor 34, for example 1M ⁇ , and the value of resistor 35 for example, 10M ⁇ .
  • the clock 8 is the transistor configured switch 10, the resistor 9 in time with the second Clock 8 in the circuit parallel to the first resistor 6 switches and on Mass couples.
  • the further clock 8 is via the clock NAND gate 33 to Beginning of a control of the electromagnet for tightening the armature 3 approximately via an appropriate control set in motion, while after the Tightening the armature 3 only the clock 4 is in action.
  • the another clock 8 also be permanently switched on, so that suit and Alternate holding sections.
  • a tip filter resistor 38 and a peak filter capacitor 39 are provided in front of the current detection switch 7 in front of the current detection switch 7 in front of the current detection switch 7 in front of the current detection switch 7 in front of the current detection switch 7 in front of the current detection switch 7 in front of the current detection switch 7 are for filtering voltage spikes a tip filter resistor 38 and a peak filter capacitor 39 are provided.
  • a Filter 40 In the circuit between the solenoid 1 and the voltage source 2 is a Filter 40 are provided, which include an inductance and / or a ferrite core can.
  • the current detection switch 7 may also be designed as an inverting comparator, whose output is coupled to the RESET input of the flip-flop 31.
  • One first of the two inputs of the comparator is connected in series with the resistor 6 coupled and detects the voltage on the circuit.
  • the other, second entrance of the comparator is applied with a reference voltage whose value by a voltage divider 41, which is rectified between one AC operating terminal 42 and the second input of the Is switched comparator.
  • the voltage divider 41 comprises three in Series connected ohmic resistors 43, 44, 45, of which the resistor 45 is coupled to ground.
  • the second input of the comparator is with a Node connected between the resistor 44 and the resistor 45 lies.
  • a node located between the resistor 43 and the resistor 44 is connected via a diode connected in the forward direction 46 to ground.
  • the comparator supplies as long as the voltage detected at the first input the voltage applied to the second input, the predetermined reference voltage value does not exceed a high level to the RESET input of flip-flop 31. Will the detected voltage is larger, the comparator supplies a low level to the RESET input of the flip-flop 31, and the switch 5 is from the flip-flop 31st open. If the detected voltage falls below the predetermined voltage From the comparison voltage value, the comparator supplies a high level to the RESET input of the flip-flop 31 and the switch 5 is again in time with the Clock 4 open and closed.
  • one between the rectifier 14 and the clock NAND gate 25 connected voltage divider 47 may be provided.
  • the voltage application of the one input of the one Clock NAND gate 25 for clocking the clock 4 takes place via the voltage divider 47, the timing being fulfilled a given condition must be performed when the AC operating voltage is above 80% of its rated voltage and interrupted when the AC operating voltage drops below 20% of its rated voltage.
  • the voltage dividing resistor 48 is connected to the connected to the terminals 12, 13 operating AC voltage in combination with the voltage dividing resistor 49 just adapted so that at a certain percentage of AC operating voltage exceeding 20% and below 80% of the AC operating voltage, the upper trigger threshold of the Voltage-dividing resistor 48 coupled clock NAND gate 25 is exceeded and the timing begins, so that the timing at the latest 80% of the nominal voltage is carried out.
  • the clock NAND gate 25 Since the clock NAND gate 25 has a "hysteresis" due to Schmitt triggers on the inputs, the Clocking even if the voltage drops below the value of the upper one Trigger threshold maintained and interrupted only when the lower Threshold of the Schmitt trigger of the input is undershot.
  • the ratio of the two resistance values of the voltage dividing resistors 48, 49 and the hysteresis defined a voltage value, from which the Clock is performed, which is further ensured that the timing at a drop below 20% of the rated voltage is interrupted.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
  • Electromagnets (AREA)
  • Control Of Linear Motors (AREA)
EP20020014583 2001-07-14 2002-07-02 Appareil de commande d'un électroaimant Expired - Lifetime EP1276120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134346 2001-07-14
DE2001134346 DE10134346B4 (de) 2001-07-14 2001-07-14 Vorrichtung zur Ansteuerung eines Elektromagneten

Publications (3)

Publication Number Publication Date
EP1276120A2 true EP1276120A2 (fr) 2003-01-15
EP1276120A3 EP1276120A3 (fr) 2004-11-10
EP1276120B1 EP1276120B1 (fr) 2010-09-01

Family

ID=7691835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020014583 Expired - Lifetime EP1276120B1 (fr) 2001-07-14 2002-07-02 Appareil de commande d'un électroaimant

Country Status (5)

Country Link
US (1) US6798634B2 (fr)
EP (1) EP1276120B1 (fr)
JP (1) JP3803309B2 (fr)
CA (1) CA2393180C (fr)
DE (2) DE10134346B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862624A2 (fr) * 2006-06-01 2007-12-05 ELESTA relays GmbH Dispositif de maintien pour un dispositif de protection de l'accès

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7289920B2 (en) * 2003-06-26 2007-10-30 General Electric Company Method and apparatus for capture of grid characteristics corresponding to fluctuation events
WO2006016822A1 (fr) * 2004-08-10 2006-02-16 Ingersoll-Rand Architectural Hardware Limited Serrure électrique pouvant être actionnée par un courant variable et/ou une tension variable
FI121281B (fi) * 2007-11-20 2010-09-15 Abloy Oy Sähkömekaanisen lukon solenoidin ohjain
US8687341B2 (en) * 2010-02-10 2014-04-01 Hanchett Entry Systems, Inc. Control circuit for electric unlocking devices using actuating solenoids
DE102010019495B3 (de) 2010-05-06 2011-11-10 K.A. Schmersal Holding Gmbh & Co. Kg Zuhaltung mit einem Elektromagneten
JP6044928B2 (ja) * 2012-09-25 2016-12-14 パナソニックＩｐマネジメント株式会社 リレー駆動装置
US11424061B2 (en) * 2015-04-14 2022-08-23 Hanchett Entry Systems, Inc. Solenoid assembly actuation using resonant frequency current controller circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522582A1 (de) * 1995-06-16 1996-12-19 Siemens Ag Schaltungsanordnung zum Betrieb eines Elektromagneten
DE19647215A1 (de) * 1996-01-19 1997-07-24 Festo Kg Schaltungsanordnung zur Steuerung von Magnetventilen
US5947090A (en) * 1997-02-14 1999-09-07 Honda Giken Kogyo Kabushiki Kaisha Fuel injection valve controller apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743821A (en) * 1986-10-14 1988-05-10 International Business Machines Corporation Pulse-width-modulating feedback control of electromagnetic actuators
US4720763A (en) * 1987-02-19 1988-01-19 Westinghouse Electric Corp. Electromagnetic contactor with control circuit for providing acceleration, coast and grab functions
DE3733091A1 (de) * 1987-09-30 1989-04-20 Siemens Ag Verfahren und anordnung zum einstellen des laststroms durch eine induktive last, insbesondere durch ein kraftstoffeinspritzventil
US5481187A (en) * 1991-11-29 1996-01-02 Caterpillar Inc. Method and apparatus for determining the position of an armature in an electromagnetic actuator
DE4341797A1 (de) * 1993-12-08 1995-06-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE19641188C1 (de) * 1996-09-24 1998-01-08 Siemens Ag Schaltungsanordnung zur Energieversorgung eines Schaltgerät-Magnetantriebs
US6208497B1 (en) * 1997-06-26 2001-03-27 Venture Scientifics, Llc System and method for servo control of nonlinear electromagnetic actuators

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522582A1 (de) * 1995-06-16 1996-12-19 Siemens Ag Schaltungsanordnung zum Betrieb eines Elektromagneten
DE19647215A1 (de) * 1996-01-19 1997-07-24 Festo Kg Schaltungsanordnung zur Steuerung von Magnetventilen
US5947090A (en) * 1997-02-14 1999-09-07 Honda Giken Kogyo Kabushiki Kaisha Fuel injection valve controller apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862624A2 (fr) * 2006-06-01 2007-12-05 ELESTA relays GmbH Dispositif de maintien pour un dispositif de protection de l'accès
EP1862624A3 (fr) * 2006-06-01 2013-12-18 Pilz Auslandsbeteiligungen GmbH Dispositif de maintien pour un dispositif de protection de l'accès

Also Published As

Publication number Publication date
JP2003124025A (ja) 2003-04-25
JP3803309B2 (ja) 2006-08-02
CA2393180A1 (fr) 2003-01-14
DE10134346A1 (de) 2003-02-06
DE10134346B4 (de) 2010-07-15
EP1276120A3 (fr) 2004-11-10
US6798634B2 (en) 2004-09-28
DE50214620D1 (de) 2010-10-14
US20030016102A1 (en) 2003-01-23
EP1276120B1 (fr) 2010-09-01
CA2393180C (fr) 2010-09-14

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