DE102006030706A1 - Bus-linked device e.g. circuit breaker, controlling system, has bus subscribers formed as actuators, where each actuator loops primary voltage and auxiliary voltage to successive actuator and has display for its operation condition - Google Patents

Abstract

The system has a configuration pushbutton (27) for starting of a bus configuration of bus subscribers that are connected by an application bus, where the bus subscribers are formed as actuators. Each actuator has a controlling and programming unit that realizes bus communication as the functionality of the actuator application. Each actuator is registered by a gateway (20) of a code number. Each actuator loops a primary voltage (14) and an auxiliary voltage (16) to the successive actuator. Each actuator has a display for its operation condition. An independent claim is also included for a method for controlling a bus-linked device.

Description

The The invention relates to a system and a method for controlling Bus-networked devices with a gateway over an open fieldbus. The subject comprises in particular the data networking, the subscriber configuration of the devices and the electrical supply with energy to the devices. As typical devices become industrial switching devices, like Sagittarius, Motor starters, circuit breakers and measuring sensors and similar Devices understood.

The aforementioned industrial switchgear and others are usually centrally located in electrical installations Control system, for example via a programmable logic Control (PLC) switched or monitored. Typically, the switching devices are over the control wiring lines connected to the control unit (for example the PLC). This consists in usually from the lines which the switching device, here preferably a contactor, a and can turn off and at the same time provide the necessary energy for switching the switching device and wires that monitor the signals from the switching device return to the control unit. examples for Signals for The supervision a switching device, here again preferably for a motor starter, is the status of the contactor position (ON / OFF) or the status of the motor protection switch (ON / OFF).

At the Construction of an electrical system (for example, a control cabinet) is the Wiring and interconnection of the electrical switching devices with the Manual control system, which is typically carried out by electricians. This work can be common a very time consuming part of the cabinet design. Farther is the wiring over many similar control lines error prone, as they, for example exchanged during installation in the cable duct and then to terminals of wrong devices can be connected. About that have to go out the control wires are put to the individual switchgear to them there electrically connect. This requires further effort in the form that for the laying of the lines cable channels Tailored to measure and These must be mounted on the mounting plate, in which then the individual Control cables can be laid.

It is the object of the invention, a system described above and To simplify a method such that a complex wiring is eliminated and The user can check and configure the system with little effort and restart when error messages.

The Task is solved by the features of the independent claims. Further developments are formulated in the respective subclaims.

The The invention relates to a system with which actuators, preferably industrial Switchgear, such as. Circuit-breakers or motor-protective circuit-breaker combinations via Application bus system, here preferably via the LIN bus, data technology be networked, with the aim of the connected industrial switchgear to control and monitor. The system has at least one gateway, which is between a open fieldbus and actuators is switched.

Special Advantages of the presented subject matter are that the control wiring to the industrial switching devices thanks to a plug-in and easy-to-install cable connection system is replaced. It will be elaborate and error-prone installations of the control wiring eliminates and the use of cable channels for laying cables are necessary, or the installation of the channels is saved.

Such Wirings affect the control lines, here preferably for a contactor, the Line for switching the contactor on and off, and the status lines, Here, for example, to query the switching position of the contactor or the status of a motor protection switch (ON, TRIPPED).

It is natural possible, as actuators more complex devices to join, which can exchange more information and data. Such Devices can, for example industrial switching devices, such as circuit breakers, motor starters or frequency converters.

figure description

1 three typical hardware components of an exemplary system,

2 a flow diagram for the presentation of the system test and the adoption of a new nominal configuration of the connected devices on the application bus,

3A and 3B Block diagrams of the application bus system,

4A to 4C three configurations of bus subscribers,

4D Connection of another bus participant and

5 a system consisting of a gateway, bus subscribers and a power module.

In the figures are the presented system and the associated method for data technology networking using the example of motor protection switch contactor combinations shown. However, the subject of the application is intended by the exemplary representation not on motor-protective circuit-breaker combinations, the also be referred to as a motor starter, be limited.

In 1 are with 1A a gateway 20 , With 1B a bus participant (here as plug-in module 45 on a motor-protective switch-contactor combinations) and with 1C a power module 50 shown as typical hardware components of an exemplary system.

The gateway has an interface to a higher-level control system, for example to an open fieldbus 2 such as Profibus DP, Device Net or CANopen or others, which means that it is connected to the higher-level fieldbus system for data purposes. The gateway controls via a ribbon cable 8th those on the application bus 10 networked bus subscribers N1... Nn used as industrial switching devices. The gateway has a first feed 24 for the supply 14 the own electronics and the electronics of the bus participants and a second feed 25 for the supply 16 the bus participant on. The latter is auxiliary voltage for the actuator actions of the bus subscribers, in which case the supply of motor-protective circuit-breaker combinations provided should be addressed as an example. The gateway has at least one light emitting diode 28 , which serves the status display of operating states of the gateway and the bus communication. The gateway has a configuration button 27 on, which serves to start the automatic bus configuration of the bus users; and at least one memory block is available in the gateway, which is used for retentive backup of the bus configuration.

• • es schaltet die Hilfsspannung 16 an die Schützspule,
• • es weist eine mechanische Anzeige 46 zur Darstellung von Aktorstellungen auf,
• • es hat eine Anzeige 48 für den eigenen Betriebsstatus,
• • es hat einen digitalen Eingang 44 für den Anschluss eines potentialfreien Schaltkontakts,
• • es weist eine Stromkreisunterbrechung 45 für den Aktor auf.

For a motor-protective switch-contactor combination, a plug-in module (SM, 40 ), which is mechanically and electrically adapted to the contactor. The plug-in module 40 has two pin contacts 49 , which are used for electrical connection to the contactor coil. This plug-in module takes over the control wiring. Hereby, the contactor coil is electrically controlled and the contactor switching position electrically interrogated; Furthermore, there is the possibility to query an electrically potential-free contact. In addition to the electrical functions, the plug-in module has a switch position indicator 46 present, the purely mechanical - visible to the operator - indicates the switching position. The minimum properties of a plug-in module are:

• • it switches the auxiliary voltage 16 to the contactor coil,
• • It has a mechanical display 46 for displaying actor positions,
• • it has an ad 48 for your own operating status,
• • It has a digital input 44 for the connection of a floating switch contact,
• • It has a circuit break 45 for the actor up.

A Such circuit interruption can, for example, for the electrical Locking a turning starter can be used.

The application bus 10 is a multi-core - here six-core - ribbon cable 8th operated (see 3A and 3B ). The administration 8th will - starting from the gateway 20 - Inserted from bus participant to bus participant via connection plug. Each bus node (Nx) has two sockets ( 41 . 42 ) adapted for plugging on the bus input side and on the bus output side of the ribbon connection line 8th , Because of the linear arrangement of subscribers, the last bus subscriber Nn has no connected connection line on the output side; its output side 42 stays empty.

Each bus participant has a status display ( 28 . 48 . 58 ) to display the device status (preferably optically, as LSD). Each bus node (Nx) has a two terminal block ( 44 . 45 . 54 . 55 ) to connect there a potential-free contact, z. B. for the auxiliary switch to query the motor protection switch position.

It should still be on 5 are referenced in the further details are shown.

The first bus subscriber N1, which is to be understood here as an example of a motor-protective circuit-breaker-contactor combination, the mains connection (L1 L2 L3) and the load M are shown. Furthermore, the upper half of the bus participant represents a motor protection switch and the lower half of the plugged on a contactor plug-in module 45 with its sockets and mechanical indicator 48 for the contact position of the contactor. The representation after 5 can be understood as an application bus with n subscribers, in the optionally a power module 50 is inserted. The explanation of the Power Module follows below.

In 2 is - above ( 2A ) - a flow chart for the presentation of the system test and - below ( 2 B ) - a flow chart for adopting a new target configuration.

The path, which leads to the left 'no' two times, shows the situation in which no bus participant is present and this is specified as the target configuration. The middle path becomes a loop solan pass through until all the bus users expected by the gateway (written in the configuration) are detected.

As a result, there are two possibilities: actual configuration equal to target configuration and actual configuration not equal to target configuration. In the first case, the system is ready for operation and the status becomes with the statically lit status LSD 28 '' displayed. In the unlike situation, the status LSD flashes 28 ' , causing the operator to operate the configuration button 27 is initiated. By pressing the configuration button 27 the existing configuration is adopted as the target configuration and the system goes into final check ( 2 B ) above.

in this connection Each individual participant is queried by the gateway and the possibly. saved in the gateway. Furthermore, it is checked whether the maximum permissible Number of participants on the application bus was not exceeded. Is this If so, the gateway reverts to the error status. were When all participants are registered, the gateway and subscribers go in the normal operating condition, in which the control data or status data between the gateway and be exchanged with the participants.

The 3A . 3B shows block diagrams of the bus control, which can be read directly by the skilled person. The 3A gives the gateway and the first bus N1 and 3B an inserted power module 50 and a second bus N2 again. On the infeed side are the inputs for the bus 2 (Plug connection 23 ) and the power supply ( 14 , GND, 16 ). U1 turns on the power supply 14 for the electronics in the gateway and the bus subscriber and with U2 the auxiliary voltage 16 understood for subscriber application. The output (socket 22 ) of the gateway leads to a 6-wire ribbon cable.

A power module (PM) can optionally be interposed at any point in the linear row of bus subscribers ( 3B ). This is also in 5 again indicated schematically. By interposing a power module, the 'linear' power supply is interrupted by bus users to bus users. The data connection and the auxiliary voltage 14 between the lying before the power module bus nodes N1, N2, N3 and lying behind the power module bus node Nn is looped through.

With the power module (PM, 50 ), a new supply is implemented for the bus subscribers (group G) following in the bus series, to which the power module is connected to a power supply 16 ' connected, for example, to 24 volts DC. In 3B is the power supply 16 ' coming from below and in 5 From above, they are shown graphically. This power supply can be, for example, a contactor supply for a group of bus subscribers who are to act as their own EMERGENCY STOP chain. The power module has screw terminals 54 . 55 for the energy supply 16 ' on. Otherwise, the Power Module - like the other bus participants - has two sockets 51 . 52 , where one is the input and the other is the output for the connector system. Similarly, the power module is a status indicator 58 present (preferably for visual display via an LED), which indicates whether the supply voltage 16 ' to the group G of the power module following bus subscriber is present.

With the presented system, it is no longer necessary to perform a conventional control wiring for networked industrial switching devices. Preferably, for motor-protective circuit-breaker combinations with a single plug-in connection line networking is made. The connection line 8th On the one hand transmits control data or status data and on the other hand the necessary energy for the switching devices. In addition, it is possible through the use of the aforementioned power modules to form groups of bus subscribers, whereby a separate power supply and monitoring of such a group is possible. The group formation can be used, for example, to construct a specific segment or circuit in which the switching devices form a separate emergency-stop circuit in which they can be monitored, switched on or off. As mentioned, the power modules are optional.

Function and operation of the system on the basis of 4A to 4D

In the drawing, a bright circle marked '' represents a lit LED 28 . 48 . 58 , a black circle (without marking) a non-illuminated LED 28 . 48 . 58 and a circle with radiate wreath (with marking ') a flashing LED 28 . 48 . 58 represents.

For the connection to the fieldbus system 2 is the gateway 20 the central element. Gateway supplies the bus users with energy, controls and monitors and sends control and status data of all connected bus participants to the higher-level fieldbus system 2 transfer. It is firstly to a power supply 14 for your own electronics and secondly to a power supply 16 connected, which supplies the bus participants. With this design of the power supply, the auxiliary voltage 16 for Busteilneh (For example, voltage to the contactor coils) regardless of the bus functionality (eg EMERGENCY STOP system) are switched off.

About the connector system of a 6-wire ribbon cable provided here 8th then the bus users (for example, motor-protective circuit-breaker combinations with plug-in modules) can be connected in sequence. Will the voltage 14 The Gateway checks for the first time on an established system 20 the connected nodes N1 ... Nx on the application bus system. In the initial situation, an arrangement without bus subscribers is provided as the target configuration.

In 4A n bus participants are wired with a nominal configuration (no bus participant). Hereby the gateway expects 20 initially due to the target configuration no participant. Therefore, the gateway goes into the error state because of the configuration error and this is visually at the gateway by a blinking LED 28 ' (top right). The first bus node N1, which is connected directly to the gateway, flashes (LED 58 ' ) also because it was not expected from the gateway. All other status LEDs 58 the other bus nodes N2 ... to Nx are off.

To 4B is used to accept the connected bus participants as the target configuration at the gateway 20 is the configuration button 27 been pressed. Now via the application bus 10 The gateway checks in sequence how many bus nodes (N1 ... Nx) are connected to the application bus. The bus subscribers are numbered consecutively. Each individual bus subscriber stores the specific identification number in a manner safe from zero voltage. In the gateway, all identification numbers are also saved in a non-volatile memory. After this process all connected bus participants are configured. LED 28 '' at the gateway and LEDs 48 '' At the bus participants, all are switched on statically and light up.

The 4B also corresponds to the situation in which the system in front of the gateway electrically (voltage 14 ) is switched off and is switched on again. After switching on, the gateway checks in sequence all connected bus users and compares them step by step with the internally stored setpoint configuration. In the situation described, the target configuration agrees with the connected subscriber configuration (actual configuration) - because unchanged. This keeps the system operational.

The individual bus users can now use the bus controller of the higher-level fieldbus 2 be controlled and monitored. If the structure of the connected devices changes, for example, due to the expansion or removal of devices, this is detected by the gateway on the basis of the deviating nominal-actual configuration and displayed by the status LSD.

4C shows an example with an existing configuration of a gateway and n bus users, which is ready after the configuration. If this structure is supplemented by one or more bus subscribers (Nin), then the following picture results after switching on. The Gateway Status LED 28 ' flashes, because the previous target configuration (n bus participant) deviates from the actual configuration (n + 1 bus participant). In addition, the LED also flashes 58 ' of the first added (even if several inserted) bus participant, because he or she was not expected by the gateway. The user can thus very easily recognize from the flashing LEDs where the actual configuration deviates. By simply pressing the configuration button 27 the new configuration is automatically adopted by the gateway. At the end of the automatic bus configuration, the same situation would now be given for n + x bus subscribers, as is the case for n bus subscribers in 4B is shown.

5 shows the use of at least one power module 50 for forming a group G of bus subscribers. Due to the Power Module, the bus participants behind the Power Module (here plug-in module on motor-protective circuit-breaker combination) are disconnected from the auxiliary power supply 16 cut off for the subscriber application and there is a new auxiliary power supply 16 ' for the latter. The application bus becomes data technology and regarding the voltage supply 14 for the electronics, the bus subscribers are looped through 1: 1 in the power module. When switching off the auxiliary voltage supply fed into the Power Module 16 ' the bus users (contactors) behind the power module are voltage-free. However, the electronics of the bus subscribers continue to be supplied with power and can thus continue to transmit the current actuator status (contact status of the motor starter) to the gateway. The use of the power modules has the advantage that independent groups of motor-protective switch-contactor combination can be formed, for example an emergency-stop circuit, which can be switched off separately. The use of power modules can be done anywhere in the connector system. It is also possible to install several power modules in the connection plug-in system so that several independent groups of bus users are formed.

2

open fieldbus

8th

connecting line (eg 6-core ribbon cable)

10

Applikationsbus (LIN-BUS)

N1 to Nn-x

bus users (Actuator, motor starter, circuit breaker)

14 14 '

primary voltage (24 V DC)

16 16 '

auxiliary voltage (24 V DC)

20

gateway

23

sockets for open fieldbus

24

feed Primary voltage (screw terminals)

25

feed Auxiliary voltage (screw terminals)

27

configuration button

28

Status LSD

40

SM plug-in module

41 42

sockets for connector to ribbon cable

44 45

sockets for power supply

46

mechanical display

48

Control LSD

49

male pins for placement on contactor with a motor starter

50

PM Power module

51 52

sockets for connector to ribbon cable

54 55

sockets for power supply

58

Control LSD

L1 L2 L3

mains connection for bus participants (actor)

M

load (Motor) to mains voltage

Claims (11)

System for controlling bus-networked devices with a gateway via an open fieldbus with the following properties: that of a bus controller of the open fieldbus ( 2 ) monitored gateway ( 20 ) has at least the following features: • It has an interface to the open fieldbus ( 2 ), • it has an interface ( 22 ) to an application bus ( 10 ) for controlling and querying at least one on the bus ( 10 Actuator (N1 ... Nx), • it has a memory for retentive backup of a bus configuration inscribable by the bus controller and also for the backup of the existing bus configuration of the application bus, • it has a data output for communication with at least one bus node (N1 Nx) • It has a control line that is used to respond to the first party, • It is connected via a first feed socket ( 24 ) with supply voltage ( 14 ), • it has a second feed socket ( 25 ) for an auxiliary voltage ( 16 ), which is forwarded to the bus subscribers (N1 ... Nx), • it has at least one status display ( 28 ) for operating states of bus subscribers (N1 ... Nx) and bus communication, • it has an actuating element ( 27 ) for starting a bus configuration of the bus subscribers (N1 ... Nx) connected via the application bus, wherein the bus subscribers (N1 ... Nx) are designed as actuators having the following properties: • they have a control and programming unit that provides the bus communication as well as the functionality of the actuator application realized, • they have a control input to query the previous participant, or the gateway and a control output for selection of the subsequent participant, • they conduct the auxiliary voltage ( 16 ) to an actuator application, • they can be connected to mains voltage (L1 L2 L3), • they perform actor actions and report these actor actions on the application bus ( 10 ), • they report actuator positions on the application bus ( 10 ), • they are from the gateway ( 20 ) an ID number can be written, • they grind the data stream ( 14 ) and the auxiliary voltage ( 16 ) to the following actuator, and • they have an indicator ( 58 ) for your own operating status. System according to claim 1, characterized in that the application bus is a LIN bus ( 10 ), with which the control data or status data as well as the processing of the configuration of the application bus is handled via a protocol which consists of LIN data frames with data lengths of 1 to 8 bytes. System according to claim 1 or 2, characterized in that an application bus configuration in the gateway ( 20 ) is firmly enrolled. System according to claim 3, characterized in that an inscribed application bus configuration can be overwritten by the bus controller. System according to one of the preceding claims, characterized characterized in that the at least one actuator (N1 ... Nx) is an electrical switchgear is. System according to one of claims 1 to 4, characterized that the at least one actuator (N1 ... Nx) a motor protection switch contactor combination is. System according to claim 6, characterized shows that on the motor-protective circuit-contactor combination a plug-in module ( 40 ) is arranged, which in addition to the actuator properties additionally has the following properties, • it switches the auxiliary voltage ( 16 ) to the contactor coil, • it has a mechanical indication ( 46 ) for presentation of actuator positions, • it has an indicator ( 48 ) for own operating status, • it has a digital input ( 44 ) for the connection of a potential-free switch contact, • it has a circuit interruption ( 45 ) for the actuator. System according to one of the preceding claims, characterized in that in the series of bus subscribers a power module ( 50 ), which has at least the following properties, • it grinds the data stream ( 14 ) to the next bus participant, • in it the auxiliary voltage ( 16 ) is not looped through, • an auxiliary voltage is supplied to it from an external voltage source ( 16 ' ), which is transmitted to the next bus subscriber, • it has an indicator ( 58 ) for indicating the presence of the external auxiliary voltage ( 16 ' ). System according to one of the preceding claims, characterized in that at least one actuator is a mechanical display ( 46 ) for displaying actuator positions. System according to one of the preceding claims, characterized characterized in that at least one sensor for detecting physical Sizes in the Row of bus subscribers is arranged. Method for controlling devices in industrial circuits having a gateway via an open bus according to one of the preceding claims, characterized in that after actuation of the actuating element ( 27 ) a configuration mode is running.