Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
  • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
  • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
  • H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts

Definitions

• the invention relates to a device having the features according to the preamble of patent claim 1.
• German Patent DE 10 2007 041 972 B3 discloses a device for controlling a switch drive of an electrical switch with a control device which is suitable for evaluating an input signal present at a binary input of the device, generated with an external operating voltage, and controlling the switch drive make in response to the input side lying at ⁇ input signal.
• the invention has for its object to provide a device of the type described, which is particularly universally applicable.
• the invention provides that the device has a reference voltage circuit which is adapted to generate to the external operating voltage of an internal reference voltage, the apparatus comprising a preprocessing unit which is adapted to generate with the signal present at binary input signal is a binary signal of the ⁇ sen logical level of the height of the input signal and the height of the reference voltage depends, and the control device of the device is directly or indirectly in communication with the pre-processing means and the binary signal of the pre-processing means evaluates.
• a significant advantage of the device according to the invention is the fact that it can be used for very different ex ⁇ ternal operating voltages.
• the device according to the invention is capable of evaluating input signals present on the input side as a function of the operating voltage with which these input signals have been formed. For this purpose, it is provided according to the invention to generate an internal reference voltage dependent on the external voltage and to evaluate the input signals present at the binary input or the binary inputs by using the internal reference voltage. In contrast to the prior art devices, it is possible to use the device for various input signals, since it is possible namely to form an internal reference voltage and heranzuzie ⁇ hen that takes into account the expected level of the input side input signals.
• the internal reference voltage is preferably smaller than the external operating voltage.
• the inter ⁇ ne reference voltage is generated such that it - apart from an et ⁇ offset offset (voltage offset value) - is proportional to the ex ⁇ tern operating voltage, so it applies before ⁇ preferably:
• Ui Uextern - Uoffset, where Ui denote the internal reference voltage, Uextern the external operating voltage and Uoffset the possible offset.
• Uoffset can be zero.
• the device has a switching element which allows or prevents a current flow from the binary input through the Vorverarbei ⁇ processing device in dependence on the height of the input ⁇ signal and the height of the reference voltage, and the logic level of the binary signal depends on the current ⁇ flow through the preprocessing.
• the switching element can allow a flow of current from the binary input through the preprocessing device, if the difference between the height of the input signal and the height of the reference voltage exceeds or falls below a predetermined minimum value.
• Vorverarbei ⁇ processing device is closed with an input terminal to the binary input and to an output terminal of the switching element at ⁇ .
• the preprocessing device preferably has an optocoupler which, on the output side, generates the binary signal, where ⁇ at the logic level of the binary signal depends on the current flow through the preprocessing device.
• An optocoupler advantageously enables potential separation.
• the reference voltage circuit preferably has a voltage divider, for example a resistive voltage divider.
• the voltage divider may, for example, have a divider terminal to which the reference voltage is applied, and the divider terminal and the output terminal of the preprocessing device may be connected to the switching element.
• the switching element is preferably a transistor or at least also has a transistor.
• the transistor may be a bipolar transistor.
• the divider terminal is preferably connected to the base terminal of the Transis ⁇ sector and the output terminal of the pre-processing preferably to the emitter terminal.
• the invention further relates to a method for controlling a switch actuator of an electrical switch where ⁇ off at an inlet side fitting to a binary input, generated with an external operating voltage input signal evaluated and the control of the switch drive in dependence ⁇ speed of the input side applied input signal is pre ⁇ taken.
• an internal reference voltage a binary signal is generated by the signal present at binary input signal whose logic level depends on the level of the input signal and the level of reference clamping ⁇ voltage is generated by the external operating voltage, and the binary signal is evaluated.
• Figure 1 shows an embodiment of a device for
• FIG. 3 shows a further embodiment of a binary ⁇ input module for the device of FIG. 1
• the device 4 comprises connections AI to A5 and one preferably as Semiconductor circuit formed H-bridge circuit 9 and a control device 10 and various preferably designed as semiconductor circuits control modules 11 to 12 for driving and retrieval of analog locks
• Control module 11 and / or binary feedback (control module 12).
• the device 4 also comprises a binary input module 13, which is connected to binary inputs 6a, 6b and 6c of the device 4 ⁇ .
• the binary inputs 6a, 6b and 6c are acted upon in ⁇ example via switches Sl, S2 and S3 with an external operating voltage, which is, for example, a control circuit voltage Usk for a control circuit SK of the device 4, a load circuit voltage Ulk for a load circuit LK Device 4 or can act at a different predetermined voltage.
• an external operating voltage which is, for example, a control circuit voltage Usk for a control circuit SK of the device 4, a load circuit voltage Ulk for a load circuit LK Device 4 or can act at a different predetermined voltage.
• the external operating voltage is the control circuit voltage Usk for the control circuit SK.
• switching elements 14 and 15 are provided.
• the switching elements 14, 15 are preferably relay contacts, which are controlled directly or indirectly by the control device 10.
• the shutdown then takes place via the control device 10 on the basis of a control signal.
• the device 4 switches off automatically approx. 1.5 s after the last command has been processed, if no new command is pending.
• a surveil ⁇ monitoring module 16 may be provided that to the switching elements 14 and 15 is connected.
• the supply of the H-bridge circuit 9, in particular the control elements, and the switching element 14 for the load circuit LK can be switched off by the monitoring module 16 ⁇ .
• 10 further operating and / or safety functions can be realized by means of the control device and used for driving or switching the switch drive M or other elements, such as display elements or Anêtele- elements.
• Some examples of programmable operating and / or safety radio ⁇ tions are described.
• the switch drive M upon reaching an end position of the resources, such. B. of
• the overrun time of the switch drive M and the braking times are freely programmable. After expiry of the specified braking time and release for manual operation, the motor circuit is automatically opened and released for manual operation. In addition, the device 4 can lock when switching the switch drive to manual mode.
• the Binäreingangsmo ⁇ dul 13 a reference voltage circuit 50 which is adapted to generate a proportional to the external operating voltage of internal reference voltage Ui.
• the control circuit voltage Usk is used as the external operating voltage, so that the control circuit voltage Usk is applied to the reference voltage circuit 50 as an external operating voltage.
• the binary input module 13 further has a scarf Tele ⁇ element 60 to which the internal reference voltage Ui of the reference voltage circuit 50 is applied.
• the switching element 60 three preprocessing devices are connected, which are indicated in the figure 1 by the reference numerals 70, 71 and 72.
• the three preprocessing ⁇ devices 70, 71 and 72 are connected to the three binary inputs 6a, 6b and 6c of the device 4 and are thus connected via the switches Sl, S2 and S3 to the control circuit voltage Usk.
• the three preprocessing devices 70, 71 and 72 are connected to the control device 10 of the device 4 via binary lines.
• the reference voltage circuit 50 comprises a diode 51, a capacitor 52 and a voltage divider 53, which forms a partial connection 54.
• the voltage divider 53 is formed by two ohmic resistors Rl and R2.
• the reference voltage circuit 50 is followed by a
• Switching element SE which is formed by a bipolar pnp transistor.
• the switching element SE is connected with its base terminal to the divider terminal 54 of the voltage divider 53 of the reference voltage circuit 50.
• FIG. 2 it can be seen that a series resistor Rv is connected to the emitter connection of the switching element SE, which is supplied with the control circuit voltage Usk and forms a current limit for the emitter collector path of the switching element SE.
• the three preprocessing devices 70, 71 and 72 are connected, which may for example be of identical design. Therefore Nachfol ⁇ quietly only the left in the Figure 2 pre-processor 70 will be described in detail.
• the two other preprocessing devices 71 and 72 are identical. It can be seen in Figure 2 that the preprocessing means 70 having an input port 70e, which is at the Bi ⁇ näreingang 6a of the device 4 and thus connected to the switch Sl.
• the input terminal 70e is connected to a diode 100 to which a constant current source 105 is connected.
• the constant current source 105 is connected via an optocoupler 110 to an output terminal 70 a of the preprocessing device 70.
• This output terminal 70a is connected to the emitter terminal of the switching element SE in connection.
• the optocoupler 110 forms a signal output 70s of the preprocessing device 70, to which a binary line 701 is connected and which transmits a binary signal B70 to the control device 10 via this binary line 701.
• the two other preprocessing devices 71 and 72 are - as already mentioned - designed identically. They also each have a diode 100, a constant current source 105 and an optocoupler 110. In addition, they are each connected to an input port 71e and 72e and an off ⁇ input terminal 71a or 72a provided, which is connected to the emitter terminal of the switching element SE ⁇ .
• the binary signals generated by the two preprocessing devices 71 and 72 are indicated in FIG. 2 by the reference symbols B71 and B72. These binary signals B71 and B72 reach the control device 10 via binary lines 711 and 721.
• Binäreingangsmoduls 13 The operation of the Binäreingangsmoduls 13 will now be explained in ⁇ way of example with reference to the pre-processor 70 in further detail:
• Switching through of the switching element SE is only considered when the emitter base line of the switching element SE is acted upon by a sufficiently high forward voltage. This is always the case when the applied voltage Ue about 0.7 V will be greater at the emitter of the switching elements SE ⁇ as the internal reference voltage Ui, which abuts the Generaleran- circuit 54 of the voltage divider 53rd In other Wor ⁇ th there will be a current flow from the binary input 6a of the device 4 by the pre-processor 70 and to a turn on of the switching element SE only if the difference between the height of the 70e of the input terminal applied voltage signal and the level of the internal reference voltage Ui exceeds a predetermined minimum value which approximates as follows:
• Umin Ui + Ueb + U70, where Umin denotes the minimum value, Ui the internal reference voltage, Ueb the emitter base voltage of the switching element SE and U70 the voltage drop across the preprocessing device 70.
• the binary input 13 thus processes an input side present at the Binäreingän ⁇ gen 6a, 6b and 6c input signal depending on the internal reference voltage Ui, which to an external operating voltage - here the Steuernikspan- Usk - is approximately proportional, with which in turn the input side applied input signal has been formed.
• Ui internal reference voltage
• the binary input shown in the Figure 2 can 13 input signals, which have been formed with an external operating voltage between 20 V and 200 V, process properly.
• the internal reference voltage Ui used to form the binary signal B70 to B72 is the external operating voltage which is used to form the input side input signals always concernsungswei ⁇ se proportional.
• the device according to FIG. 2 is "high active", which means that when a positive voltage is applied to the binary inputs 6a, 6b and 6c, a binary signal B70, B71 or B72 is always generated with a logic "1" becomes.
• FIG. 3 shows by way of example an exemplary embodiment of a binary input module 13 which is "low active". This means that when the switches S1, S2 and S3 are open, ie in the absence of current flow through the corresponding preprocessing device 70, 71 and 72, a binary signal B70, B71 or B72 will be generated with a logical "1".
• the structure according to FIG. 3 essentially corresponds to the design according to FIG. 2, the following changes in circuitry being made: (a) The external connection of the control circuit voltage Usk, but the negative connection of the control circuit voltage, is not the external operating voltage for the three switches S1, S2 and S3 Usk used. (b) The diodes 100 and the optocouplers 110 in the preprocessing devices 70, 71 and 72 are connected with inverse Verpo- ment.
• an npn transistor is used whose emitter terminal is connected via a series resistor Rv to the negative terminal of the control circuit voltage Usk.

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• Power Conversion In General (AREA)

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• 2011
  • 2011-01-14 DE DE201110002685 patent/DE102011002685B3/de not_active Expired - Fee Related
• 2012
  • 2012-01-06 CN CN201280005090.2A patent/CN103299383B/zh active Active
  • 2012-01-06 EP EP12701231.8A patent/EP2663985B1/fr active Active
  • 2012-01-06 WO PCT/EP2012/050175 patent/WO2012095367A1/fr active Application Filing
  • 2012-01-06 ES ES12701231.8T patent/ES2527270T3/es active Active

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