EP2728201A2 - Appareil de réglage électropneumatique et module électropneumatique - Google Patents

Appareil de réglage électropneumatique et module électropneumatique Download PDF

Info

Publication number: EP2728201A2
Authority: EP; European Patent Office
Prior art keywords: pneumatic; slot; electronic; electropneumatic; field device
Prior art date: 2012-10-31
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

EP13004694.9A

Other languages

German (de)

English (en)

Other versions

EP2728201A3 (fr

EP2728201B1 (fr

Inventor

Frank Valentin-Rumpel

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.)

Samson AG

Original Assignee

Samson AG

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.)

2012-10-31

Filing date

2013-09-27

Publication date

2014-05-07

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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=49322129&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2728201(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2013-09-27 Application filed by Samson AG filed Critical Samson AG

2014-05-07 Publication of EP2728201A2 publication Critical patent/EP2728201A2/fr

2017-08-23 Publication of EP2728201A3 publication Critical patent/EP2728201A3/fr

2023-07-12 Application granted granted Critical

2023-07-12 Publication of EP2728201B1 publication Critical patent/EP2728201B1/fr

Status Active legal-status Critical Current

2033-09-27 Anticipated expiration legal-status Critical

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Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities
- F15B5/006—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities with electrical means, e.g. electropneumatic transducer
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/006—Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6653—Pressure control
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6656—Closed loop control, i.e. control using feedback
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
- F15B2211/8855—Compressible fluids, e.g. specific to pneumatics

Definitions

the invention relates to an electropneumatic field device, such as an electropneumatic positioner, an I / P converter or the like.
the electropneumatic field device often serves as a control device for controlling a pneumatic actuator of a process plant, for example, the petrochemical industry, the food industry or the like, which in turn actuates a control valve for controlling a process fluid flow.
the electropneumatic field device has at least one electrical field input, via which the field device receives an electric field input signal, which may be formed, for example, in the case of a pneumatically operated control valve as a desired control signal.
the field input signal may be, for example, an analog 4-20mA current signal or a digital fieldbus signal such as Profibus PA, Foundation Fieldbus, ASI or Devicenet.
the electropneumatic field device has at least one electronic and / or pneumatic component, which may be, for example, an electropneumatic converter, a data memory, a pneumatic power generator and / or a microprocessor.
the electropneumatic field device may include multiple electronic and / or pneumatic components, such as multiple electropneumatic converters, microprocessors, electrical switches, data storage, and / or pneumatic power generators.
the at least one electronic and / or pneumatic component is connected to the at least one electrical field input in order to obtain the electrical field input signal.
a control and / or regulating electronics can be connected between the electrical field input and the electronic and / or pneumatic component.
the electro-pneumatic converter is pneumatically coupled to the pneumatic supply input of the field device.
the field device usually has a pneumatic field output, on the basis of the received field input signal, a pneumatic field output signal can be issued, for example, to control the pneumatic actuator.
An electropneumatic field device in which a plurality of electronic and / or pneumatic components, such as an electronic controller, a U / I converter, an I / P converter, a power amplifier, and a reversing amplifier, can be used.
a reversing amplifier is used when the electropneumatic field device accesses a double-acting pneumatic actuator.
the positioner has a main body and a detachable maintenance cassette, the interior of which is divided into a compartment for electropneumatic components and an electronic compartment.
the entire maintenance cassette is removable from the main body for maintenance.
the electro-pneumatic field device such as the electropneumatic positioner, the I / P converter or the like, at least one electric field input, a pneumatic supply input, at least one electronic and / or pneumatic component, such as an electropneumatic converter, preferably a plurality of electro-pneumatic transducers Microprocessor, a data memory, a pneumatic power generator and / or the like.
the at least one electronic and / or pneumatic component is connected to the at least one electrical field input and optionally to the pneumatic supply input.
the pneumatic field device has a field output to which a field output signal can be output on the basis of a field signal received via the at least one electrical field input, in particular actuating and / or regulating signal.
the electropneumatic field device has a group consisting of at least two modular electronic and / or pneumatic components of different functionality and at least one modular slot for occupancy, each with an electronic and / or pneumatic component.
the at least two electronic and / or pneumatic components of the group and the at least one slot are so modularly matched to each other that their electrical and optionally pneumatic interface when occupying the slot each functionally and reliable handed over each other.
the electropneumatic field device can also have electronic and / or pneumatic components which are not arranged in a modular slot.
a modular slot serves to accommodate a singular modular electronic and / or pneumatic component.
the modular slot should be easily accessible from an outside of the field device. Those electronic and / or pneumatic components of the group that are not used can be stored on the outside of the housing at respective form-complementary, in particular electrically blind, storage bins for later use in a modular slot for the modular slot.
the field output of the electropneumatic field device according to the invention can be carried out both pneumatically and electrically and is preferably formed by one of the electronic and / or pneumatic components in the modular slot.
an electropneumatic converter can be provided externally, that is outside the field device housing, which generates a pneumatic signal for output, for example, to the pneumatic actuator on the basis of the electric field output signal.
the modular slot is adapted to a single modular electronic and / or pneumatic component from the group of electronic and / or pneumatic components of different functionality, such as one or more electro-pneumatic transducers, one or more microprocessors, one or more data storage, one or more pneumatic Power generators and / or the like, interchangeable to establish an electrical connection to the respective electrical interfaces and optionally to establish a pneumatic connection between the respective pneumatic interfaces. Since the at least two electronic and / or pneumatic components are interchangeably provided on the electropneumatic field device according to the invention, the at least one slot is designed to be easily accessible from the outside (with respect to the field device housing).
the electropneumatic field device according to the invention has a high degree of modularity, which can be used by a plant operator or system builder to adjust to changing process conditions of the plant without great installation effort.
Known positioners suffer from the disadvantage that by permanently implemented I / P converter the air power of the field device fixed unchangeable, in particular limited, is.
the inventive measure a modularity in particular with respect to all electronic and / or pneumatic components, such as the electropneumatic converter, the data memory, the pneumatic power generator, the microprocessor and / or the like to create, it is possible, for example, the air performance of the field device significantly increase or decrease, but also to change the control routine by replacing the control microprocessor to provide a self-sufficient power generation and / or change by replacing the pneumatic power generator to use data for uploading and saving by exchanging data storage as desired, without the field device and / or To manipulate the environment.
the control microprocessor to provide a self-sufficient power generation and / or change by replacing the pneumatic power generator to use data for uploading and saving by exchanging data storage as desired, without the field device and / or To manipulate the environment.
the system manufacturer with the electropneumatic field device according to the invention does not require a great deal of time and design effort, let alone requires the interruption of the operation of the process plant if it is desired to change the operation of the electropneumatic field device in one or more functionalities.
the electropneumatic field device according to the invention has the advantage of not necessarily having to use a separate volume booster in the pneumatic line system if the air line of the installed electropneumatic converter is no longer sufficient.
the electropneumatic field device has at least two modular slots, both of which are covered with a different electropneumatic transducer.
a control electronics which is fixed and non-interchangeable, for example, mounted within a housing of the electropneumatic field device, but can also be replaced by a modular slot against another position electronics, selects one of the two pressure transducers depending on the operating conditions to those for the functional operation of the electropneumatic field device to use the most suitable pressure transducer parameters.
the unselected electropneumatic transducer in the slot remains in a passive wait position.
a third electropneumatic functionality is used in a two-station or multi-station field device, it is possible to replace one of the slot-occupying electropneumatic converters with a third electropneumatic converter having the desired function, for example at a blind storage location on the outside the field device housing was stored.
the slot has a female recess shape, at least partially complementary to the male profile the respective electronic and / or pneumatic component is.
the coordinated shapes are chosen such that only one insertion position is permitted to ensure the adaptation of the electrical interface and optionally the pneumatic interface.
the at least one slot has a docking mechanism comprising a forming and / or force-locking device, such as a latching device, in particular a manually operable clamp or a screw connection for releasably securing the respective electronics and / or pneumatic component in the modular slot includes.
the positive and / or positive locking device can preferably be designed to communicate a bias voltage of the respective electronic and / or pneumatic component, so that the respective electrical interfaces and optionally the pneumatic interfaces of the slot and of the electronic and / or pneumatic components are pressed against each other, to establish the electrical contact and, if necessary, the pneumatic connection.
the at least one slot is realized by a recess or recess, in particular in a housing wall of the field device.
the electrical component can be accommodated in a form-fitting manner.
the electropneumatic field device has a plurality of modular slots.
the plurality of modular slots can be occupied either by the same electronic and / or pneumatic components in particular different functionality, or different electronic and / or pneumatic components.
the occupancy depends on the desired character characteristic of the field device, for example the air performance.
the at least one slot has an electrical interface connected to the electrical field input and optionally a pneumatic, connected to the pneumatic supply input of the field device interface for the pneumatic coupling of a pneumatic connection of the electronic and / or pneumatic component, for example, if an I / P converter is to be used as electronic and / or pneumatic component.
the at least one slot has a closure associated with the pneumatic interface, which closes its pneumatic interface substantially airtight in the occupied state of the at least one slot.
the closure is deactivated, so that a pneumatic connection of the pneumatic supply to the electro-pneumatic converter is established.
each modular slot has an electrical interface connected to the at least one electrical field input and optionally pneumatic interface coupled to the pneumatic supply input.
the respective interface is connected functionally in the docked state of the respective electronic and / or pneumatic component with their electrical and optionally pneumatic connection.
the at least one modular slot each has a modular docking mechanism for the at least one modular electronic and / or pneumatic component.
the docking mechanism is designed to firmly hold and hold the respective electronic and / or pneumatic components in the modular slot, in particular by means of latching and optionally for replacement of the electronic and / or pneumatic components, in particular non-destructive and preferably manually, in particular without special tools to solve.
the at least modular slot each has an identification device for detecting the type / type of electronic and / or pneumatic component.
the identification device is designed to close a pneumatic interface of the slot substantially hermetically or to activate an airtight seal in the case of occupancy of the slot with an electronic and / or pneumatic component without pneumatic function, such as a microprocessor.
the identification device may have an electrical and / or mechanical sensor, which optionally has an electronic unit, how a particularly fixedly installed microprocessor is operatively coupled to a pneumatic closure disposed on the slot.
the field device has an electronic unit, such as a microprocessor, which can be used as a modular electronic and / or pneumatic component in the at least one modular slot.
the electronics unit may also be permanently installed as a permanently installed non-modular member within the field device housing.
the electronics unit is designed to detect the occupancy of the at least one modular slot with different electronic and / or pneumatic components and, correspondingly, to associate the field input signal received at the field device with the respective electronic and / or pneumatic component.
the electropneumatic field device has a housing that is in particular fluid-tightly lockable.
the housing can accommodate in a first compartment a particular permanently installed control electronics.
the at least one modular slot is arranged on an outer wall of a partition wall of a compartment or on an outer wall of the housing so that an operator thereby has manual access to the at least one slot.
the arrangement may comprise a plurality of modular slots or even a modular slot by means of a detachable from the housing housing part, such as a lid, in particular for forming a second housing part preferably fluid-tight manner.
the at least one modular slot has an electrical connection diagram and possibly a pneumatic connection diagram.
the at least one electronic and / or pneumatic component can have an electrical mating connection image and optionally a pneumatic mating connection image, wherein the mating connection image is designed mirror-inverted to the connection diagram, so that the electrical contact and the directly upon insertion of the electronic and / or pneumatic component in the slot pneumatic connection is made.
the electropneumatic field device has at least one pair of modular slots, preferably three pairs of modular slots, all slots being occupied by an electropneumatic transducer, and in particular an electropneumatic transducer of the slot pair is directly connected to a pneumatic working chamber of the control valve and the other electropneumatic transducer of the slot pair is pneumatically coupled to a pneumatic actuator, such as a breather or a breather, wherein the breather is connected to the pneumatic working chamber such that upon receipt a particular predetermined pneumatic output signal of the other electropneumatic transducer of the slot pair, the pneumatic working chamber of the actuator is vented, preferably with an atmospheric pressure output of the pneumatic actuator is coupled, wherein in the case of a double-acting pneumatic actuator, the second working chamber is driven by a second pair of corresponding occupied slots.
a pneumatic actuator such as a breather or a breather
the electropneumatic field device has a pair of modular slots, wherein one slot with an electropneumatic converter and the other slot are occupied by an electrical output stage, wherein the electropneumatic converter to an external, in particular outside a housing of the field device arranged electropneumatic Transducer, such as a solenoid valve is connected, which is connected to a working chamber of an actuator, wherein the electrical output stage is connected to the external electropneumatic converter such that upon delivery of a predetermined electrical signal, the external electropneumatic converter is vented, in the case of a double acting, pneumatic actuator a second pair of corresponding occupied slots for driving the second working chamber is provided.
electropneumatic Transducer such as a solenoid valve
the electropneumatic field device has a group of at least two modular electronic and / or pneumatic components, at least one electropneumatic converter, at least one pneumatic power generator, at least one microprocessor, at least one electrical output stage, such as at least one switch, and / or at least a data store.
the housing structure for the electropneumatic field device is not realized from a common housing for all components, but the housing of the electropneumatic field device is divided into at least two separate housing parts.
the electronic and / or pneumatic components are to be arranged in respective slots in a first housing part, wherein the slots should preferably be accessible from the outside.
second housing in particular, only the slots for pneumatic components are provided.
the housing for the electronic and / or pneumatic components may be realized on a yoke or lantern connecting the actuator to the control valve housing, wherein the electronic and / or pneumatic components may be for example a microcomputer, a position sensor or the like.
the second housing for the pneumatic electronic and / or pneumatic components is preferably mounted in particular on an outer wall side of the actuator facing the control valve housing, whereby electronic pneumatic components, such as the I / p converter or a booster, can be arranged on the housing.
the invention relates to an electropneumatic assembly with a control valve of a process plant, a pneumatic actuator, in particular a double-acting pneumatic actuator or a single-acting pneumatic actuator for setting a control valve, optionally a position sensor for detecting the position of the control valve and with an electropneumatic field device as described above.
the position sensor is preferably connected to the electropneumatic field device, in particular to its electronic control unit, such as its microprocessor, signal-transmitting.
its electronic control unit such as its microprocessor, signal-transmitting.
FIG. 1 is a pneumatically operated, inventive control valve assembly, which is used to control a process fluid flow of a process plant, not shown, such as a petrochemical plant, a food processing plant, such as a brewery, or the like, generally designated by the reference numeral 1.
This control valve assembly 1 comprises as main components a pneumatic actuator 3, a control valve 5, which is actuated to control the process fluid flow of the process plant, not shown, by the actuator 3, and a designed as a positioner electro-pneumatic field device 7, via a pneumatic line system 11 to the pneumatic Actuator 3 is connected.
the control valve 5 is mechanically connected to the pneumatic actuator 3 via a spindle or shaft 13.
the housing may have a fluid-tight lockable cavity in which inter alia electrical lines, pneumatic connecting lines and / or a microprocessor are housed. It is clear that the housing 17 of the electropneumatic field device according to the invention can also be formed only by a printed circuit board with attached pneumatic lines.
the position sensor 15 outputs a position signal to a microprocessor 21, which is shown accommodated in an interior of the field device housing 17 and receives a setpoint signal w via a field input 18 on the field device housing from a control center of the system, not shown.
the electropneumatic field device 7 has, in addition to the electric field input 18, a pneumatic field input 33 and four optionally usable pneumatic field outputs A 1-4 .
the electropneumatic field device 7 or the positioner has four essentially identically constructed plug-in or plug-in places 23a, 23b, 23c, 23d which are freely accessible from the outside and which can optionally be assigned four individual electronic and / or pneumatic components of various designs.
the electronic and / or pneumatic component may be an I / P converter, a data memory, a pneumatically operated power generator, the microprocessor 21 and / or an electronic switch, wherein electronic and / or pneumatic components of the same design different functionality are used in the slots can.
each slot can accommodate only a single electronic and / or pneumatic component.
the slots 23a to 23d are modularly adapted such that, depending on which predetermined electronic component is used, the function of the electronic and / or pneumatic component is ensured by producing communication lines to the respective other components.
the electropneumatic field device 7 may also have bearing receptacles, not shown, for storing unused modular electronic and / or pneumatic components, which bearing receptacles are substantially identical in shape to the slots 23a to 23d, but have no electrical or pneumatic interface.
the electropneumatic field device 7 has a group of at least two electronic and / or pneumatic components that can be selected to be inserted into the respective slots.
the electronic and / or pneumatic components are in FIG. 1 not shown in detail.
Each individual slot 23a to 23d of the field device has a pneumatic input interface 25a to 25d, which is connected via a running within the housing 17 supply line 27 via the pneumatic field input 33 to a pneumatic supply source 31, for example, constant 6 bar (P Z ).
the slots 23a to 23d additionally comprise an electrical output interface 33a to 33d, which are connected via electrical lines each with a microprocessor input I 1-4 is connected.
each slot 23a to 23d has an electrical input interface 35a to 35d connected by electrical leads to a respective microprocessor output O 1-4 .
the electronic and / or pneumatic components placed in the slots 23a to 23d can communicate with the microprocessor 21 so that, for example, a control signal can be output from the microprocessor 21 to the respective slot 23a to 23d.
the microprocessor 21 recognizes via the communication lines, which type and type electronic and / or pneumatic component is used at the respective slot 23a to 23d and / or whether the slot 23a to 23d is unoccupied.
each slot 23a to 23d has an output interface 37a to 37d through which output signals of either electrical nature (not in FIG. 1 shown) or pneumatic nature S 1-4 can be delivered to the respective field device output A 1 to A 4 .
the field device outputs A 1-4 are used pneumatically and can deliver a correspondingly pneumatic control signal S 1-4 via corresponding pneumatic lines 41 to the pneumatic actuator 3. Since all the pneumatic pressures of the individual, used in the slot 23a to 23d I / P converter have the same effective direction in the working volume of the pneumatic actuator, significantly increases the air power through the multiple, decoupled driving the I / P converter, whereby the Control accuracy is increased in the position of the control valve. If four I / P converters of the same air flow rate are used, the air flow supplied to the pneumatic actuator will be quadrupled.
the slots 23a to 23d can also be occupied by four most different I / P converters. If a slot 23a to 23d is occupied by an I / P converter, the microprocessor 21 recognizes the occupancy via, for example, a suitable sensor, not shown, and / or via the respective electrical input interface 35a to 35d to the electrical microprocessor output O 1-4 connecting line.
the microprocessor 21 can select only one of these for operation of the actuator 3. Selects the microprocessor 21, for example, the arranged in the slot 23c I / P converter with a certain air power, the microprocessor 21 outputs, via its output I 3 a corresponding electrical control signal to the disposed in the slot 23c I / P converter from which emits a corresponding air pressure signal S 3 via the pneumatic output interface 37c to the pneumatic actuator 3, wherein the remaining I / P converter in the slots 23a, 23b, 23d deactivated by the microprocessor 21 or at least remain unansprochen ,
the microprocessor 21 recognizes this. It then automatically causes either the respective control signal of the microprocessor 21 or a self-operating closure device (not shown) that the respective pneumatic input interface 55a until 55d of the empty slot is closed.
a pure electronic and / or pneumatic component such as an electrical memory
the slot 23a to 23d can be occupied by the microprocessor 21, which may communicate with the respective other slots.
the slot 23b may be occupied by an I / P converter as described above, while the slot 23c may be inserted by a pneumatic power generator to supply the other electronic and / or pneumatic components.
the slot 23d may be occupied by an electrical data memory or an electrical circuit which is connectable to an external electrical component.
FIG. 2 is schematically indicated in a perspective view of one of the slots 23, the plug-in side has a docking mechanism 43 for the realization of the modularity, which is adapted to the electronic and / or pneumatic component 45
the in FIG. 2 is represented as a cube, releasably but firmly, wherein in the accommodated position, an electrical contact between the electrical input 47 and the electrical output 49 of the electronic and / or pneumatic component 45 and the respective electrical output or input interface (33a to 33d or 35a to 35d) is established.
the docking mechanism 43 comprises a latching device which serves to hold the electronic and / or pneumatic component 45 by means of prestressing in the slot 23a to 23d against the respective slot-side interfaces.
the latching device can be released by means of manual actuation, so that the electronic and / or pneumatic component 45 can be removed from the slot 23a to 23d and exchanged for another electronic and / or pneumatic component 45.
the locking device may be formed of a plurality of latching hooks 53, which are fixedly mounted on the housing 17 in the region of the slot operable from the outside.
the slots 23 and the electronic and / or pneumatic components 45 inserted therein can be encapsulated in a fluid-tight manner for protection against external influences by means of a cover which can be detachably fastened to the housing 17, in particular screwed.
a cover which can be detachably fastened to the housing 17, in particular screwed.
FIGS. 3 to 6 different occupancy versions of the electropneumatic field device 7 according to the invention are shown, wherein the electropneumatic field device 7 may be connected to different electropneumatic external actuators outside the field device housing 17.
the field device 7 is designed as a positioner.
three are occupied by an electronic and / or pneumatic component, namely an I / P converter 55a, 55b, 55c, one of the modular slots 23d being occupied by an empty module 57.
the dummy module 57 and the modular slot 23d are matched to one another such that the pneumatic input interface 25d is hermetically sealed and the electrical contacts 33d, 35d are covered short-circuit proof.
the latter recognizes via the electrical lines to and from the microprocessor 21, whether a modular slot is occupied and with which electronic and / or pneumatic component.
the microprocessor 21 also recognizes which type of I / P converter 55a-55c (for example, air-power) is inserted in the respective slot 23a-c.
the microprocessor 21 transfers via its output O 1 an electrical signal to the I / P converter 55 a, which transmits a pneumatic output signal S 1 the field output A 1 passes directly to the pneumatic actuator 3.
the electrical signal through the output O 2 of the I / P converter 55 b generates a second pneumatic output signal S 2 , which passes through the field output A 2 to a volume flow amplifier 61 which amplifies the pneumatic output signal S 2 and via corresponding pneumatic lines to the Actuator 3 continues.
the arranged in the slot 23c I / P converter generates on signaling by the microprocessor 21 via output O 3, a pneumatic output signal S 3 , that is supplied via the field output A 3 a fast exhaust fan 63.
the I / P converter 55c controls the air vent 63 in such a way that S 3 of the vent 63 causes venting the pneumatic lines to the actuator 3 at a particular predetermined drop in the pneumatic output signal, so that on the actuator prevails 3 atmospheric pressure.
the control valve 5 can achieve a safety position, for example by acting in the actuator 3 spring forces.
the microprocessor 21 may receive electrical signals I 1-3 on its inputs that can make statements about, for example, the output pressure S 1 to S3. Alternatively, the microprocessor 21 may also obtain information about the type of electronic and / or pneumatic component that is used in the slot 23a to 23c via the corresponding inputs I 1-3 . The microprocessor 21 may also detect if a dummy module 57 is inserted in the slot 57d.
An electrical output stage 65 (conversion of the electrical input signal into an electrical output signal according to a predetermined conversion routine) is used.
the electrical signal obtained by the microprocessor via the output O 1 is converted to an electrical output signal S 1 and transmitted via the field output A 1 to an external, arranged outside the field device housing 17 solenoid valve 67.
the output stage 65 is designed to airtightly close the pneumatic input interface 25a of the slot 23a.
an I / P converter 55b is used, which supplies a pneumatic output signal S 2 via the field output A 2 to the solenoid valve 67, the pneumatic Output signal to the actuator 3 passes.
the I / P converter 55c used in the modular slot 23c generates a further pneumatic output signal S 3 which, like the pneumatic output signal S 2, is fed to the actuator 3 via the external solenoid valve 67.
the I / P converter 55c may have the same pneumatic air capacity as the I / P converter 55b. Alternatively, a smaller or a larger air power for the I / P converter 55c may be provided for optimizing the position control. It is then the microprocessor 21 which selects which of the two I / P converters 55b or 55c or even both should be responsible for the position of the control valve 5.
the fourth slot 23d is occupied by a modular exchangeable, electronic data memory M which stores all the electronic signals of the field device 7, in particular of the microprocessor 21, for later reading.
the digital signal transmission runs via electrical lines which are connected to the signal input I 4 and the signal output O 4 of the microprocessor 21.
the data memory M is designed with respect to the modular slot 23d such that the pneumatic output interface 25d of the slot 23d is hermetically sealed.
FIG. 5 a further possible application of the electropneumatic field device 7 according to the invention is shown, namely for pneumatic coupling to a double-acting pneumatic actuator 71.
the pneumatically double-acting actuator 71 translationally actuates a control valve 5 and has two pneumatic working chambers 73, 75, with different pressures P 1 , P 2 are individually acted upon.
the working chambers 73, 75 are pneumatically separated from each other by a displaceable piston 77.
Both pneumatic working chambers 73, 75 are connected to a pair of electronic and / or pneumatic components in the slots 23a, b and 23c, d respectively, which are each occupied by an I / P converter 55a to d.
the pressure P 1 in the working chamber 75 is controlled by the I / P converters 55a, 55b.
the I / P converter 55a generates a pneumatic output signal S 1 , which is supplied via the field output A 1 directly to the working chamber 75 of the actuator 71.
the I / P converter 55b generates a second pneumatic output signal S 2 , which is supplied via the field output A 2 a quick exhaust fan 81 and in a fall causes the venting of the pneumatic lines to the working chamber 75 of the actuator 3.
the pneumatic working chamber 75 is at atmospheric pressure.
the I / P converter 55c in the slot 23c produces a third pneumatic output signal S 3 which establishes a substantially inverted waveform as compared to the pneumatic output signal S 1 of the I / P converter 55a.
the pneumatic output signal S 3 is fed directly from the field output A 3 to the actuator 71.
the I / P converter 55d generates a fourth pneumatic output signal S 4 , which is supplied via the field output A 4 a quick exhaust fan 83 and controls them such that when dropping the pneumatic output signal S 4, the quick exhaust 83 venting the pneumatic connections to the pneumatic Working chamber 73 of the actuator 71 causes. Also in this case, then the pneumatic working chamber 73 is at atmospheric pressure.
rapid exhaust fan allows a much more precise and faster pneumatic control of double-acting actuators. While rapid exhaust fans 81, 83 have a hysteresis due to the design, this overshoot can be prevented by the separate control by means of the I / P converters 55b and 55d.
the pneumatic output signal A 2 and A 4 activating the rapid exhaust fan 81, 83 can be reversed from venting to venting before the pneumatic output signal A 1 and A 3 so that the venting is decelerated without overshooting.
the independence of the pneumatic output signals A 1-4 thus provides a precise way of regulating pneumatic output variables. In particular, the combination of small air power with high air flow can be performed very accurately to realize short positioning times.
FIG. 6 an alternative assignment of the slots 23a to 23d and different external pneumatic actuators for a pneumatically double-acting actuator 71 is shown. As with the execution after the FIG. 5 are the slots 23 b and 23 d with an I / P converter 55b and 55d occupied.
the pneumatic transducers 55b, 55d are designed and controlled by the microprocessor 21 so that opposite output pressures S 2 and S 4 are realized.
the pneumatic output signals S 2 and S 4 are supplied to external, outside of the field device housing 17 positioned solenoid valves 85 and 87, respectively.
electrical output stages 65 a and 65 c are used, similar to that of the embodiment according to FIG. 4 act.
the field device 7 as a positioner can be reconfigured according to the invention such that the previously inverted working electropneumatic slot module is used as a second module in a single-acting positioner.
the field device works in the same effective direction as the first plug-in module pair to increase the flow rate. This results in a doubled air power, which allows increased control accuracy by the decoupled control of the two plug-in module pairs.
a pneumatic power generator may be inserted into one of the slots 23a to 23d.
the power generator can serve to supply all electronic and / or pneumatic components of the field device 7 with electricity.

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Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Analytical Chemistry (AREA)
Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

EP13004694.9A 2012-10-31 2013-09-27 Appareil de réglage électropneumatique et module électropneumatique Active EP2728201B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102012021387.5A DE102012021387B3 (de)	2012-10-31	2012-10-31	Elektropneumatisches Feldgerät und elektropneumatische Baugruppe

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EP2728201A2 true EP2728201A2 (fr)	2014-05-07
EP2728201A3 EP2728201A3 (fr)	2017-08-23
EP2728201B1 EP2728201B1 (fr)	2023-07-12

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EP (1)	EP2728201B1 (fr)
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Also Published As

Publication number	Publication date
EP2728201A3 (fr)	2017-08-23
EP2728201B1 (fr)	2023-07-12
DE102012021387B3 (de)	2014-02-13
US9506482B2 (en)	2016-11-29
US20140116241A1 (en)	2014-05-01

Publication	Publication Date	Title
DE102012021387B3 (de)	2014-02-13	Elektropneumatisches Feldgerät und elektropneumatische Baugruppe
EP3359351B1 (fr)	2021-08-25	Dispositif de préhension à régulateur intégré
EP2728202B1 (fr)	2019-10-23	Système d'entraînement pneumatique et procédé de fonctionnement du système d'entraînement pneumatique
EP1872019A1 (fr)	2008-01-02	Dispositif d'entrainement comportant un regulateur de position
WO2004055387A1 (fr)	2004-07-01	Appareil de regulation de flux de fluide
DE102007058518A1 (de)	2009-06-18	Verfahren zum Betrieb eines Stellungsreglers
EP2466175A1 (fr)	2012-06-20	Appareil de terrain électropneumatique
EP3101284A1 (fr)	2016-12-07	Actionneur electro-pneumatique
WO1998054627A1 (fr)	1998-12-03	Dispositif intelligent de commande et de regulation
DE69705566T2 (de)	2002-05-23	Pneumatischer Stellantrieb mit endmontierter Steuervorrichtung
DE10222890B4 (de)	2004-06-17	Elektrische Einrichtung für die Ansteuerung eines Mehrwegeventils mit einer Verschleißzustandserkennung
WO2001069094A1 (fr)	2001-09-20	Dispositif pour commander un actionneur hydraulique
DE102006006585B3 (de)	2007-10-18	Wandler eines elektrischen Eingangssignals in ein pneumatisches Ausgangssignal
DE102018202416A1 (de)	2019-08-22	Verbrauchersteuervorrichtung und Steuerungsverfahren
EP2865899A1 (fr)	2015-04-29	Appareil de maintenance à air comprimé, dispositif de commande de consommation équipé de celui-ci et procédé de commande correspondant
DE19636418A1 (de)	1998-03-12	Pneumatischer Stellantrieb
DE9211109U1 (de)	1992-10-29	Elektro-pneumatische Steuereinrichtung
EP1846681B1 (fr)	2008-08-13	Dispositif pour commander le mouvement de commutation d'une soupape
DE102009004569A1 (de)	2010-07-15	Verfahren und elektronische Einrichtung zur Kompensation der Hysterese von pneumatisch angetriebenen Armaturen
EP3601808B1 (fr)	2020-12-09	Dispositif de commande de processus
DE29810102U1 (de)	1998-08-20	Steuereinrichtung für fluidbetätigte Verbraucher
EP3318769B1 (fr)	2022-01-05	Régulateur de position électropneumatique et appareil de terrain doté d'un régulateur de position életropneumatique
EP2728205B1 (fr)	2020-10-14	Unité de traitement d'air comprimé et dispositif de commande d'un consommateur équipé de celle-ci
DE102005001055A1 (de)	2006-07-20	Redundante elektrohydraulische Ventilanordnung
EP2606240A1 (fr)	2013-06-26	Dispositif de commande électrofluidique

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