EP3672375A1 - Variateur de luminosité - Google Patents

Variateur de luminosité Download PDF

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Publication number
EP3672375A1
EP3672375A1 EP19209893.7A EP19209893A EP3672375A1 EP 3672375 A1 EP3672375 A1 EP 3672375A1 EP 19209893 A EP19209893 A EP 19209893A EP 3672375 A1 EP3672375 A1 EP 3672375A1
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EP
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Prior art keywords
dimmer
channel
control device
channels
measuring
Prior art date
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Pending
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EP19209893.7A
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German (de)
English (en)
Inventor
Johann Mensch
Jakob Reislhuber
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Siemens Schweiz AG
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Siemens Schweiz AG
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Publication of EP3672375A1 publication Critical patent/EP3672375A1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/31—Phase-control circuits

Definitions

  • the invention relates to a dimmer, namely a device for controlling the electrical power consumption of an electrical load, in particular an integrated or connectable lighting device. Dimmers are well known and are used to vary electrical power.
  • the invention further relates to a method for recognizing the correct wiring of at least two electrically isolated dimmer channels of a dimmer connected in parallel.
  • a power variation in dimmers can preferably be carried out by leading edge control or by leading edge control.
  • phase control the current is switched on with a delay after the AC voltage has passed zero and flows until the next current zero crossing. It is preferred for inductive load behavior. With phase control, however, the current is switched on immediately after the zero crossing and switched off again before the next zero crossing. This is preferred for capacitive load behavior.
  • the dimmer In order to generate the control commands required for this on its switching components, the dimmer has a main control device.
  • the invention relates to so-called multi-channel dimmers. These have several individual dimmers, each of which controls part of the electrical load. To increase performance, these so-called dimmer channels can be switched in parallel, sequentially or mixed on the output side. Several physical channels are interconnected and a powerful logical channel is created. The dimmer channels can be in one device or in multiple devices.
  • each dimmer channel has its own channel control device, advantageously a simple processor, and a measuring device for measuring the electricity in the channel, which in some cases can also be formed by this processor. Thanks to the measuring device, the channel control device receives the information about the periodic behavior of the electricity in the channel, which is necessary for the detection of the phase gating or the phase section.
  • the control commands generated by the main control device are each transmitted via a communication link to the channel control devices of the dimmer channels and implemented on site in accordance with the information about the periodic behavior of the electricity in the channel.
  • the complexity of the measuring equipment leads to high development costs and production costs.
  • Component tolerances or aging of the components can also result in inaccuracies in the zero crossing detection.
  • the resulting time differences then lead to a non-synchronous switching of the dimmer channels and to the problems described above.
  • a device replacement or a recalibration of its components is possible, but not without costs and possibly consequential damage due to malfunction.
  • German patent specification DE102017213888B3 discloses a dimmer for controlling the power consumption of a connectable load, with at least two dimmer channels, at least one dimmer channel being designed as a measuring dimmer channel for detecting the behavior of the electricity. For the synchronization of the dimmer channels, starting from the measuring dimmer channel, a channel communication connection leads from one dimmer channel to the next dimmer channel.
  • German patent specification DE102016209278B3 discloses a dimmer system for controlling the power consumption of a connectable load and a method for controlling the power consumption of a connectable load in a dimmer system, with a master control device and with at least two slave dimmers, the master control device synchronization signals for synchronizing the respective outputs of the slave - Outputs the dimmer via a suitable communication link to the respective slave dimmer, and the slave dimmers are connected in parallel in order to provide a common controlled output for the connectable load.
  • State-of-the-art dimmers and dimmer systems are suitable for phase-synchronous switching of several parallel physical channels or of slave dimmers, but they still require a manual check whether the parallel connection of the dimmer channels has been wired correctly.
  • a dimmer for controlling the power consumption of a connectable load, in particular an LED light, with at least two electrically isolated dimmer channels connected in parallel, each with a channel control device, of which dimmer channels at least one dimmer channel is designed as a measuring dimmer channel, which is a measuring device, which at least is suitable for generating information about the behavior of electricity at a point in the measuring dimmer channel, a main control device which is at least suitable for generating control commands for the dimmer channels, and a communication link which is at least suitable for receiving such control commands from the To transmit main control device to the channel control device of a dimmer channel, the dimmer comprising at least one channel communication connection, which is at least suitable to transmit information from a first dimmer channel to a second dimmer channel, and wherein the channel communication connection is at least suitable to transmit information about the behavior of electricity at the point in the measuring dimmer channel, with a channel communication connection starting from the measuring dimmer channel in each case from one dimmer
  • each channel can only control a certain load (e.g. 300W). If you want to control a higher load (e.g. 1000W), this is not possible with a single channel. For this reason, several channels are connected in parallel and thus jointly control a larger load. These parallel channels must therefore be controlled in parallel by the internal software and wired in parallel. Failure to perform either of these two actions could damage the universal dimmer and load.
  • the present invention ensures that the parallel dimmer channels are controlled in parallel and are also correctly wired in parallel. Furthermore, the fault case of incorrect wiring of the channels is recognized immediately, so that no consequential damage occurs.
  • Each channel of the dimmer has information about the times of the zero crossings of the sinusoidal AC voltage of the conductor connected to it as well as the zero crossings of the adjacent channel connected in parallel.
  • the invention reduces the likelihood of incorrect wiring or incorrect parameterization in parallel operation.
  • the Errors are automatically recognized and reported by the dimmer (e.g. by an optical or acoustic signal, or by an appropriate error message on a display of the dimmer, or by an appropriate message to a central point (e.g. control center). Damage to the dimmer and the load due to incorrect wiring / This makes parameterization of parallel operation more difficult.
  • the dimmer according to the invention comprises at least two dimmer channels, each with a channel control device. At least one of the dimmer channels is a measuring dimmer channel because it comprises a measuring device for measuring the electricity in the channel. Your information about the behavior of electricity in the measuring dimmer channel is transmitted to the channel control device of the measuring dimmer channel.
  • the dimmer further comprises a main control device which can generate at least control commands for the dimmer channels, and a main communication connection which is at least suitable for transmitting such control commands from the main control device to the channel control device of a dimmer channel.
  • the dimmer comprises at least one channel communication connection from a first dimmer channel to a second dimmer channel, preferably with an element for the electrical isolation of the first dimmer channel from the second dimmer channel, preferably with an opto-coupler or alternatively with a transformer circuit.
  • This channel communication connection can transmit information, at least about the behavior, preferably the periodic behavior, of the electricity in the measuring dimmer channel, from the measuring device or from the channel control device of a first dimmer channel to a second dimmer channel, preferably to the channel control device of the second dimmer channel.
  • the channel communication connection is preferably also suitable for transmitting information in the opposite direction.
  • the information about the periodic behavior of the electricity in a measuring dimmer channel is preferably an indication of the time when the information is sent by the channel control device of the first dimmer channel, or preferably an indication of the time of at least one zero crossing of the voltage in the measuring dimmer channel.
  • the channel control device of the second dimmer channel can use the information about the periodic behavior of the electricity in the measuring dimmer channel to generate information about the periodic behavior of the electricity on site, with which it can switch the electricity in the channel precisely and synchronously with the other dimmer channels.
  • These stored data preferably contain a time value which is similar to an estimate of the time for the processing and transmission of the information from the measuring dimmer channel to the control device of the second dimmer channel.
  • the time value is a constant for each dimmer channel and may contain values over the time for the generation of the information by the measuring device, its transmission through the channel communication connection or through the channel communication connections from the measuring dimmer channel to the second dimmer channel and their processing in the dimmer channels. It can be determined for each dimmer channel, namely from a calibration with measurements on the dimmer or to other dimmers from the same series or in a simulation using a computer. The data have preferably been permanently stored in the channel control devices.
  • the signal is transmitted over a short distance without complex processing, the information about the periodic behavior of the electricity in the measuring dimmer channel comes with less, but especially when it is repeated and despite aging of the components with almost the same delay in the channel control device of the second dimmer channel. It is noteworthy that this also applies to the overall transmission delay if the signal is transmitted from the original channel control device of the measurement dimmer channel via some channel control devices and via the channel communication connections in between. Accordingly, the first dimmer channel to a channel communication connection can be different from the measurement dimmer channel.
  • the channel communication connection can at least also transmit control commands from the main control device from the channel control device of the first dimmer channel to the channel control device of the second dimmer channel.
  • the instructions for switching behavior are distributed to several dimmer channels in the same way, which makes direct communication connections to the main control device of the dimmer unnecessary. This can also be done unidirectionally for cost reasons, although bidirectional communication has advantages.
  • the at least one channel communication connection between the channel control device of the measuring dimmer channel and each channel control device of at least two dimmer channels.
  • the measuring dimmer channel thus has a direct channel communication connection with several control devices of other dimmer channels. This may be implemented as as many individual channel communication connections, or as a single channel communication connection for bus communication or the like, according to which telegrams are received at the destination thanks to a single address or a group address.
  • the main control device is a channel control device.
  • the dimmer is equipped with a suitable evaluation unit (e.g. microcontroller with appropriate software or firmware) to evaluate the information about the behavior of electricity in the dimmer channels.
  • the evaluation unit is advantageously arranged or integrated in the measuring dimmer channel and / or in the main control device.
  • a further advantageous embodiment of the invention is that the measuring dimmer channel is set up to recognize whether the respective times of the respective zero crossings of the sinusoidal AC voltages applied to the respective dimmer channels are essentially synchronous. If the sinusoidal AC voltages run essentially synchronously, synchronous switching of the dimmer channels is ensured and correct parallel wiring of the dimmer channels is recognized.
  • one of the dimmer channels can be equipped as a measuring dimmer channel with the corresponding measuring and evaluation means.
  • the measuring dimmer channel is in a channel communication connection with the other parallel dimmer channels.
  • each dimmer channel is set up to recognize whether the respective times of the respective zero crossings of the sinusoidal AC voltages applied to the respective dimmer channels are essentially synchronous. If the sinusoidal AC voltages run essentially synchronously, synchronous switching of the dimmer channels is ensured and correct parallel wiring of the dimmer channels is recognized.
  • each of the parallel dimmer channels can be equipped as a measuring dimmer channel with the corresponding measuring and evaluation means.
  • each dimmer channel is designed as a measuring dimmer channel with a respective measuring device and a respective communication connection to the main control device, the main control device being set up to recognize whether the respective times of the respective zero crossings of the sinusoidal AC voltage present at the respective dimmer channel are essentially synchronous. Based on the information provided by the dimmer channels on the respective periodic behavior of the electricity on site, the main control device recognizes whether there is a synchronous switching of the dimmer channels and a correct parallel wiring of the dimmer channels. For this purpose, the main control device is equipped with corresponding evaluation means (for example means for comparing the information supplied). Eg microprocessor with appropriate software or firmware.
  • a further advantageous embodiment of the invention is that when it detects whether the respective times of the respective zero crossings of the sinusoidal alternating voltages applied to the respective dimmer channels are not synchronous, a corresponding indicator (red LED, buzzer sound, output of a message on a display, Etc.). This immediately notifies a user (e.g. installer) of an error or a fault when connecting the dimmer.
  • a corresponding indicator red LED, buzzer sound, output of a message on a display, Etc.
  • a dimmer for controlling the power consumption of a connectable load, in particular an LED light, with at least two electrically isolated dimmer channels connected in parallel, each with a channel control device, each of the dimmer channels being designed as a measuring dimmer channel, each with a measuring device, which is at least suitable for the detection of the zero crossing of the current and / or the voltage present at the respective dimmer channel; a main control device which is set up to receive information about the zero crossings of the sinusoidal alternating currents and / or alternating voltages applied to the respective dimmer channels from the respective channel control devices via suitable communication connections, and which is further configured to communicate the information about the zero crossings of the respective dimmer channels with one another compare, and which is further set up to generate control commands for the dimmer channels, using the appropriate communication links the control commands can be transmitted from the main control device to the channel control devices of the dimmer channels, the main control device being set up to recognize whether the zero crossings of the dimmer channels assigned for parallel operation are
  • the main control device in the dimmer is designed as a separate component (e.g. microcontroller).
  • the channel control units or the channel control devices can be designed very inexpensively (lean). This configuration enables simple command communication and a simple voltage supply for the main control device and the channel control devices.
  • a further advantageous embodiment of the invention is that the main control device is integrated in a correspondingly configured channel control device of a dimmer channel.
  • a microcontroller can be dispensed with.
  • this configuration enables direct and thus fast communication between the dimmer channels.
  • a channel control device of a dimmer channel is designed as a main control device as a master.
  • the channel control devices of the dimmer channels are essentially the same. It is negotiated which of the channel control devices is the master (e.g. depending on the production number or ID number). The master is advantageously determined automatically when commissioning or loading the firmware.
  • Another advantageous embodiment of the invention is that the detection of whether the respective zero crossings of the sinusoidal alternating currents and / or alternating voltages applied to the respective dimmer channels are essentially synchronous, by comparing the respective times of the zero crossings or by comparing the respective phase angles. This is advantageously done by measuring the time difference between the zero crossings.
  • a 50 Hz system for example, there is a time difference of approximately 6.67 ms between two phases of a three-phase three-phase system, which corresponds to a phase angle of 120 degrees.
  • a 60 Hz system for example, there is a time difference of approx. 5.55 ms.
  • a further advantageous embodiment of the invention is that when it is recognized that the respective times of the respective zero crossings of the sinusoidal alternating currents and / or alternating voltages present on the respective dimmer channels are not synchronous, a corresponding indicator (red LED, buzzing noise, output of a message) is present on the dimmer can be activated on a display, etc.).
  • a secure message can e.g. are output if the measured time difference or a measured phase angle differ by the above-mentioned values by +/- 5%.
  • Figure 1 shows the division of functions of a first exemplary multi-channel dimmer D on the supply network N, L1.
  • the multi-channel dimmer D has a plurality of dimmer channels K1, K2, Kx, which are electrically isolated from one another, each with a channel control device S1, S2, Sx.
  • the dimmer channels K1, K2, Kx are connected in parallel to the load L on the output side via terminals A1, A2, Ax so that everyone can supply them with part of the current.
  • the dimmer D starts on the basis of an external command B.
  • a main control device H generates control commands which reach the channel control device S1 of the dimmer channel K1 via a communication connection V.
  • the dimmer channel K1 contains a measuring device M1 which is suitable for generating information about the behavior of electricity at one point in the channel, in particular information about the zero crossing of the voltage.
  • the dimmer channel K1 is therefore also called the measuring dimmer channel.
  • a communication link transmits such information from the measuring device M1 to the channel control device S1.
  • a channel communication connection V12, V23, V (x-1) x leads from one dimmer channel to the next dimmer channel.
  • These channel communication connections V12, V23, V (x-1) x are preferably suitable for transmitting information about the behavior of the electricity in the measuring dimmer channel K1 to the channel control device S2, Sx of the next dimmer channel K2, Kx, specifically here from the channel control device S1, S2 of the one dimmer channel K1, K2 to the channel control device S2, Sx of the other dimmer channel K2, Kx.
  • these channel communication connections V12, V23, V (x-1) x can also transmit the control commands from the main control device H.
  • the communication connections V, V12, V23, V (x-1) x between the electrically isolated main control device H and the dimmer channels K1, K2, Kx each contain an optocoupler on both sides.
  • Figure 2 shows a second exemplary multi-channel dimmer.
  • the channel communication connections V12, V23, V (x-1) x between the dimmer channels K1, K2, Kx the measuring device M with the respective channel control devices S1, S2, Sx for a very timely transmission.
  • the channel communication connections V12, V23, V (x-1) x are unidirectional, which is why separate communication connections V supply the control commands from the main control device H to each dimmer channel K1, K2, Kx and return any feedback.
  • Figure 3 shows measuring dimmer channel K1, dimmer channel K2 and their channel communication connection V12 of the second exemplary multi-channel dimmer in detail Figure 2 , the circuits of the measuring device M1, the channel communication link V12 and the dimmer channel K2 being simplified.
  • a Operational amplifier N11 of the measuring device M1 converts the mains voltage of 230 volts into a signal that is easier to process.
  • a comparator N12 of the measuring device M1 analyzes this signal for zero crossings. The zero crossings are passed on directly to the channel control device S1 but also to an optocoupler in the channel communication connection V12.
  • the optocoupler contains a light-emitting diode and a light-sensitive resistor, which switches a current via the resistor R in the dimmer channel K2.
  • the optocoupler thus transmits the information about the zero crossings with a small delay to the channel control device S2 and to the next channel communication connection.
  • the measuring device M1 itself can also act as an evaluation unit, i.e. Take over or provide evaluation functionality, such as comparison of the phase angles and / or comparison of the times of the zero crossings.
  • the functionalities of the measuring device M1 and the evaluation unit AE1 can be integrated in one component or in one component. However, the evaluation functionalities can also be implemented in a separate evaluation unit AE1.
  • the control commands of the main control device H arrive in a manner similar to the variant of FIG Figure 1 via a single communication connection V to the channel control device S1 of the dimmer channel K1.
  • the channel control device S1 passes them on to the next dimmer channel K2 via the channel communication connections V12, as in the variant of FIG Figure 2 .
  • the switch for example a transistor, is switched between conducting and blocking by an output of the respective channel control device Sx.
  • the switch When the respective comparator Nx2 energizes the light-emitting diode, the switch can thus impose small voltage steps on the signal, which result in small intensity steps in the light the LED.
  • a simple voltmeter can detect the corresponding resistance steps in the light-sensitive resistor on the receiver side. However, they do not trigger a zero crossing detection there. These steps thus encode the control commands of the main control device H and are passed on to the respective channel control device Sx + 1 by the voltmeter.
  • the exemplary dimmers D according to Figure 1 or according to Figure 2 Equipped with a suitable evaluation unit AE1, AE2 (eg microcontroller with appropriate software or firmware) for evaluating the information about the behavior of electricity in the dimmer channels K1, K2, Kx.
  • the evaluation is carried out, for example, by comparing the respective times of the respective zero crossings of the sinusoidal alternating voltages present at the respective dimmer channels K1, K2, Kx or by analyzing the respective phase shift angle or the phase difference.
  • the evaluation unit AE1, AE2 is advantageously arranged or integrated in the measuring dimmer channel M1 and / or in the main control device H.
  • each dimmer channel K1, K2, Kx is designed as a measuring dimmer channel M1 with a respective measuring device M1 and a respective communication link V to the main control device H, the main control device H being set up to recognize whether the respective times of the respective zero crossings of the sinusoidal AC voltage present at the respective dimmer channel K1, K2, Kx are essentially synchronous. Based on the information provided by the parallel dimmer channels K1, K2, Kx about the respective periodic behavior of the electricity on site, the main control device H recognizes whether a synchronous switching of the Dimmer channels K1, K2, Kx and correct parallel wiring of dimmer channels K1, K2, Kx are available.
  • the main control device H is equipped with corresponding evaluation means AE2 (for example means for comparing the information supplied).
  • evaluation means AE2 for example means for comparing the information supplied.
  • Eg microprocessor with appropriate software or firmware.
  • each dimmer channel K1, K2, Kx can therefore have an evaluation unit AE1.
  • a further advantageous embodiment of the invention is that when it detects whether the respective times of the respective zero crossings of the sinusoidal alternating voltages present at the respective dimmer channels K1, K2, Kx are not synchronous, a corresponding indicator I (red LED, buzzer sound, Output of a message on a display, etc.). This immediately notifies a user (e.g. installer) of an error or a fault when connecting the dimmer D.
  • a user e.g. installer
  • FIG 4 shows an arrangement for a third exemplary multi-channel dimmer D.
  • the exemplary multi-channel dimmer D according to Figure 4 it is a universal dimmer.
  • each channel can only control a certain load LA1 - LAn (eg 300W). If you want to control a higher load (e.g. 1000W), this is not possible with a single channel. For this reason, several channels DK1 - DKn are connected in parallel and thus jointly control a larger load.
  • These parallel channels DK1 - DKn must therefore be controlled in parallel by the internal software on the one hand and wired in parallel on the other. Failure to perform either of these two actions could damage the universal dimmer and load.
  • the universal dimmer D comprises a main control device H (advantageously a suitably equipped microcontroller), which is at least suitable for generating control commands for the dimmer channels DK1-DKn. Control commands can be sent from the main control device H to the corresponding channel control devices via the communication link V. of the respective dimmer channels DK1 - DKn are transmitted.
  • the galvanically isolated (GT) dimmer channels DK1 - DKn connected in parallel are each advantageously equipped with a channel control device (simple processor or appropriately equipped microprocessor). Information can be transmitted between the dimmer channels DK1-DKn, in particular between two adjacent dimmer channels, via channel communication connections KV.
  • At least one dimmer channel DK1 comprises a corresponding measuring device M1 and a corresponding evaluation unit AE1.
  • the evaluation unit AE1 is set up to recognize whether the respective times of the respective zero crossings of the sinusoidal AC voltage present at the respective dimmer channel DK1-DKn are essentially synchronous.
  • further or also all dimmer channels DK1 - DKn can be equipped with a measuring device M1 and an evaluation unit AE1.
  • the main control device H can also include an appropriately configured evaluation unit AE2 for recognizing whether the respective times of the respective zero crossings of the sinusoidal AC voltage present at the respective dimmer channel DK1-DKn are essentially synchronous.
  • the dimmer channels DK1 - DKn are connected on the output side for power supply via terminals AK1 - AKn to the corresponding load LA1 - LAn.
  • GT galvanically isolated
  • Different phases L1, L2, L3 can of course be connected to these (e.g. L1 on channel DK1, L2 on channel DK2 etc.) in order to control independent loads LA1, LA2, LAn.
  • Each channel DK1 - DKn can control a certain maximum load (e.g. 300W).
  • Figure 5 shows an arrangement for a fourth exemplary multi-channel dimmer D in which all channels DK1 - DKn are connected to the same phase L1.
  • On the software side (by means of corresponding phase or zero crossing synchronization, for example by means of corresponding synchronization signals from the control unit H to the channels DK1-DKn) it is possible to bundle two or more channels DK1-DKn in order to jointly control a load L which is greater than the maximum load of a single channel DK1 - DKn.
  • both the dimmer and the load can be damaged.
  • Figure 6 shows an arrangement for a fifth exemplary multi-channel dimmer D, different phases L1, L2, L3 being connected to bundled channels DK1-DKn.
  • the dimmer D and the load L e.g. a lamp
  • the present invention detects and reports such faulty wiring.
  • Figure 7 shows an arrangement for a sixth exemplary multi-channel dimmer.
  • the exemplary multi-channel dimmer D according to Figure 7 it is also a universal dimmer.
  • each channel can only control a certain load (e.g. 300W).
  • the main control device H in the dimmer D is the main control device H in the dimmer D as a separate component (e.g. Microcontroller).
  • the channel control units SE1-SEx or the channel control devices can be designed very inexpensively (lean). This configuration enables simple command communication and a simple power supply for the main control device H and the channel control devices SE1-SEx.
  • the respective zero crossings ND of the sinusoidal alternating currents and / or alternating voltages present at the respective dimmer channels DKa-DKx are essentially synchronous by comparing the respective times of the zero crossings ND or by comparing the respective phase angles in the main control device H.
  • this is done by measuring the time difference of the zero crossings.
  • a 50 Hz system for example, there is a time difference of approximately 6.67 ms between two phases of a three-phase three-phase system, which corresponds to a phase angle of 120 degrees.
  • a 60 Hz system for example, there is a time difference of approx. 5.55 ms.
  • a corresponding indicator I red LED, buzzing sound, output of a message on a Display, etc.
  • a reliable message by indicator I can be output, for example, if the measured time difference or a measured phase angle differ by +/- 10%, in particular +/- 5%, by the above-mentioned values.
  • FIG 8 shows an arrangement for a seventh exemplary multi-channel dimmer D.
  • the exemplary multi-channel dimmer D according to Figure 8 it is also a universal dimmer.
  • each channel can only control a certain load (e.g. 300W). If you want to control a higher load L (e.g. 1000W), this is not possible with a single channel. For this reason, several channels DKa - DKx are connected in parallel and thus jointly control a larger load L (eg a lamp).
  • L e.g. 1000W
  • the exemplary dimmer D for controlling the power consumption of a connectable load L, in particular an LED light, according to Figure 8 includes: At least two dimmer channels DKa - DKx connected in parallel, galvanically GT, each with a channel control device SE1 - SEx, each of the dimmer channels DKa - DKx being designed as a measuring dimmer channel, each with a measuring device M1, which is at least suitable for the zero-crossing detection NDE of the respective dimmer channel DKa - DKx current and / or the voltage present; a main control device H, which is set up to receive information about the zero crossings ND of the sinusoidal alternating currents and / or AC voltages present at the respective dimmer channels DKa - DKx from the respective channel control devices SE1 - SEx via suitable communication connections KV, and which is further set up, which To compare information about the zero crossings (ND) of the respective dimmer channels DKa - DKx with one another, and which is
  • the functionality of the main control device can be integrated into a correspondingly configured channel control device SE1-SEx of a dimmer channel DKa-DKx.
  • a microcontroller can be dispensed with.
  • this configuration enables a direct and therefore fast Communication between the channel control devices SE1 - SEx of the dimmer channels DKa - DKx.
  • a channel control device SE1-SEx of one of the dimmer channels DKa-DKx can be designed as a main control device, ie as a master.
  • the channel control devices SE1-SEx of the dimmer channels DKa-DKx are essentially the same. It is negotiated which of the channel control devices SE1 - SEx is the master (master dimmer channel) (e.g. depending on the production number or ID number). The master is advantageously determined automatically when commissioning or loading the firmware.
  • the master dimmer channel detects whether the respective zero crossings ND of the sinusoidal alternating currents and / or alternating voltages present at the respective dimmer channels DKa - DKx are essentially synchronous, by comparing the respective times of the zero crossings ND or by comparing the respective phase angles. If it is recognized that the respective times of the respective zero crossings ND of the sinusoidal alternating currents and / or alternating voltages present at the respective dimmer channels DKa-DKx are not synchronous, a corresponding indicator I can be activated on the dimmer D. In principle, a corresponding message can also be output to a central location within a building automation system.
  • Each channel of the dimmer has information about the times of the zero crossings of the sinusoidal AC voltage of the conductor connected to it as well as the zero crossings of the adjacent channel connected in parallel. By measuring the phase shift of the two voltages, it is possible to determine whether there is a significant phase shift. (Error: Different conductors connected) or not (No error: Same conductor connected).
  • the invention reduces the likelihood of incorrect wiring or incorrect parameterization in parallel operation of a dimmer. In the event of an error, the error is automatically recognized and reported by the dimmer. Damage to the dimmer and the load due to incorrect wiring / parameterization of parallel operation is made more difficult or even prevented.
  • Method and correspondingly set up dimmer for recognizing the correct wiring of at least two galvanically isolated dimmer channels of a dimmer, in particular a universal dimmer, for each dimmer channel information about the times of the zero crossings of the sinusoidal AC voltage of the conductor connected to it as well as information about the zero crossings of the parallel adjacent channels are provided; and whereby it is determined by measuring the phase shift of the two voltages whether there is a significant phase shift or not, a detected phase shift representing faulty wiring.
EP19209893.7A 2018-12-17 2019-11-19 Variateur de luminosité Pending EP3672375A1 (fr)

Applications Claiming Priority (1)

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DE102018009924.6A DE102018009924B4 (de) 2018-12-17 2018-12-17 Dimmer und Verfahren zum Erkennen der korrekten Verdrahtung von Dimmkanälen

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DE102018009924B4 (de) 2020-10-01

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