WO2007010289A1 - Modular fieldbus segment protector - Google Patents

Modular fieldbus segment protector Download PDF

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Publication number
WO2007010289A1
WO2007010289A1 PCT/GB2006/002758 GB2006002758W WO2007010289A1 WO 2007010289 A1 WO2007010289 A1 WO 2007010289A1 GB 2006002758 W GB2006002758 W GB 2006002758W WO 2007010289 A1 WO2007010289 A1 WO 2007010289A1
Authority
WO
WIPO (PCT)
Prior art keywords
spur
trunk connection
connection bus
trunk
fieldbus segment
Prior art date
Application number
PCT/GB2006/002758
Other languages
French (fr)
Inventor
Gunther Rogoll
Renato Kitchener
Original Assignee
Pepperl & Fuchs (De)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Pepperl & Fuchs (De) filed Critical Pepperl & Fuchs (De)
Priority to EP06765085.3A priority Critical patent/EP1905056B2/en
Priority to AT06765085T priority patent/ATE472166T1/en
Priority to US11/988,950 priority patent/US8467196B2/en
Priority to CA2615608A priority patent/CA2615608C/en
Priority to DE602006015059T priority patent/DE602006015059D1/en
Priority to CN2006800262027A priority patent/CN101223620B/en
Priority to BRPI0613779-2A priority patent/BRPI0613779A2/en
Publication of WO2007010289A1 publication Critical patent/WO2007010289A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/15—Plc structure of the system
    • G05B2219/15119—Backplane controller

Definitions

  • This invention relates to a Modular Fieldbus Segment Protector for use in connecting electrical devices to a trunk connection bus.
  • Known Fieldbus segment protection generally comprises a block containing a plethora of spur outlets. This is not an economic or versatile configuration as many spur outlets are often left unused.
  • T couplers It is possible to use T couplers but these increase the footprint size, increase the number of terminal connections and generally increases the cost of manufacture and use.
  • the present invention is intended to overcome some of the above problems.
  • a modular Fieldbus segment protector comprises a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
  • the invention provides a modular system in which self-contained fault isolation means can be utilised where and when necessary by only being applied to particular spur outlets.
  • the fault isolation means are removable from the support means, they can also be moved about thereon and applied to the spur outlets as desired.
  • each spur outlet is provided with its own autonomous fault isolation means.
  • the invention includes a modular Fieldbus segment protector in which removal of a fault isolation means from between the trunk connection bus and a spur outlet will isolate the spur outlet, and any spur connected thereto, from the trunk connection bus.
  • secondary switch means can be provided between the trunk connection bus and one or more of the plurality of spur outlets.
  • Each secondary switch means can be adapted to connect its spur outlet to the trunk connection bus when a fault isolation means is not mounted between the trunk connection bus and that spur outlet
  • the secondary switch means can be adapted to automatically connect its spur outlet to the trunk connection bus when a fault isolation means is removed from between them, and to automatically break that connection when a fault isolation means is returned to between them.
  • the secondary switch means can be provided with deactivation means, the operation of which prevents the secondary switch means connecting its spur outlet to the trunk connection bus when a fault isolation means is not mounted between them.
  • the deactivation means can be manual or otherwise.
  • the deactivation means can be operated and the fault isolation means can be removed from between the spur outlet and the trunk connection bus. Also, if a fault isolation means is not present, and the secondary switch means is connecting the spur outlet to the trunk connection bus, then the deactivation means can be operated at any time to isolate the spur.
  • each one of the plurality of spur outlets is provided with a secondary switch means of any of the kinds described above.
  • the fault isolation means can comprise an electrical circuit adapted to transition to high impedance if a short circuit or low resistance fault occurs at a spur.
  • electrical circuit There are several known types of electrical circuit which can be used.
  • the trunk connection means can be any known connector, such that the modular Fieldbus segment protector could be retrofit to an existing Fieldbus trunk.
  • the trunk connection bus can be connected to a trunk by being integrally formed thereon. Such an arrangement would be suitable if the modular Fieldbus segment protector of the invention were integrated into a new Fieldbus trunk system.
  • the spur outlets can be any know connectors, such that the modular Fieldbus segment protector can be retrofit to an existing Fieldbus trunk, and such that different spurs can be connected and disconnected thereto as desired in use.
  • spurs can be integrally formed onto the support means, and as such the spur connectors can comprise the connection points between the spurs and the support means. Such an arrangement would be suitable if the modular Fieldbus segment protector of the invention were integrated into a Fieldbus trunk system in which the spurs were not disconnectable.
  • the support means can comprise a backplane carrying the trunk connection bus, the removable fault isolation means and the plurality of spur outlets.
  • the support means can comprise a plurality of separate backplanes each carrying a trunk connection bus and a spur outlet.
  • One or more of the backplanes can also carry a fault isolation means, according to the invention.
  • the trunk connection means of the invention can comprise connectors which can connect the backplanes to a trunk.
  • the connectors can also be adapted to connect one backplane to another, so any number of backplanes can be daisy-chained together between connections to the trunk.
  • Such connectors might be so-called D connectors.
  • This arrangement allows any number of backplanes to be incorporated into a Fieldbus system as required. This modular system eliminates the occurrence of redundant spur outlets.
  • the support means of the invention can also be adapted to support other devices.
  • any device could be mounted between the trunk connection means and the trunk connection bus to serve any particular purpose.
  • Such a device might be a simple direct spur connection module without any fault isolation features, or it could be a passive device with a PCB connection.
  • Other types of additional circuitry could also be included here, for example voltage limiting components or modules, and/or additional spur protection electronics.
  • the modular Fieldbus segment protector of the invention could be fully integrated into a Fieldbus system.
  • a Fieldbus system is provided with a modular Fieldbus segment protector comprising a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
  • Figure 1 is a diagrammatic view of a first modular Fieldbus segment protector according to the present invention.
  • Figure 2 is a diagrammatic view of a second modular Fieldbus segment protector according to the present invention.
  • a modular Fieldbus segment protector comprises a support means, in the form of backplane 1, provided with trunk connection means, a trunk connection bus 6 and a plurality of spur outlets.
  • backplane 1 is simply mounted on a trunk 2, and as such the "trunk connection means" in this case comprises the incoming and outgoing trunk wires.
  • Secondary switch means in the form of shunt switches, only one of which 4 is visible, are provided between the trunk connection bus 6 and the spurs 7.
  • the shunt switches 4 automatically connect the spurs 7 to the trunk connection bus 6 when a spur isolator 3 is removed from between them. This connection is broken when a spur isolator 3 is returned.
  • the means by which the shunt switches 4 automatically connect the spurs 7 to, and disconnect the spurs 7 from, the trunk connection bus 6 can be any known trip devices.
  • the spur isolators 3, 3a and 3b to 3n comprise electrical circuits adapted to transition to high impedance if a short circuit or low resistance fault occurs at a spur 7. Such technology is well known and is not further described here.
  • spur isolators 3, 3a and 3b to 3b connect the spurs 7 to the trunk connection bus 6, so that devices (not shown) connected to the spurs 7 are provided with electrical power and can operate.
  • the spur isolators 3, 3a and 3b to 3n operate to protect the spur 7 and the trunk 2 from any short circuits or breaks which may occur in the system. As the spur isolators 3, 3a and 3b to 3n are autonomous they can isolate separate parts of the system without affecting others.
  • spur isolators 3, 3a and 3b to 3n are removable from the backplane 1 they can be applied to connect particular spurs 7 to the trunk connection bus 6 as required.
  • a spur isolator 3, 3a and 3b to 3n is not required and can be utilised elsewhere. This flexibility allows for a targeted, and therefore more economic, use of resources.
  • spur isolator 3, 3a and 3b to 3n If a spur isolator 3, 3a and 3b to 3n is removed from between the trunk connection bus 6 and a particular spur 7, as is shown in Figure I 1 then the shunt switch 4 automatically connects the spur 7 directly to the trunk connection bus 6. As such, a spur isolator 3, 3a and 3b to 3n can be removed from the backplane 1 for whatever reason, and there will be no interruption in electrical supply to the spur 7, and any device connected thereto. This allows for the live removal and replacement of spur isolators 3, 3a and 3b to 3n in use. In particular it prevents devices from being disconnected by accident.
  • Figure 2 shows a variation of the invention in which the support means comprises a plurality of separate backplanes Ia and Ib to In, each carrying a single trunk connection bus and a spur outlet.
  • each backplane Ia and Ib to In also carries a spur isolator, and in each case shunt switches as described above are provided.
  • Each of the backplanes Ia and Ib to In is provided with the female part of a D connector at one side, and the male part of a D connector at the opposite side (not shown).
  • each backplane Ia and Ib to In can be connected to the trunk, either at an inlet or an outlet, and the backplanes Ia and Ib to In can be connected together. Therefore, any number of backplanes can be daisy-chained together between connections to the trunk.
  • backplanes Ia and Ib are connected together in such a chain, between connections to the trunk. It will be appreciated that any number of such backplanes can be connected together in this way, and the hashed outline of In in Figure 2 is intended to indicate this capability.
  • the modular Fieldbus segment protector shown in Figure 2 has two levels of modular flexibility.
  • the spur isolators can be removed from the backplanes Ia and Ib to In, and moved between them if desired, and in addition, the number of actual spur outlets provided can be adjusted by removing or adding backplanes.
  • the present invention also includes a Fieldbus system provided with a modular Fieldbus segment protector as described above.
  • This invention is supported by Figure 1, in which the modular Fieldbus segment protector is integrally mounted on a Fieldbus trunk, and the spurs are integrally mounted on the modular Fieldbus segment protector. Therefore a Fieldbus system according to the second aspect of the present invention is supported by the Figures.
  • the modular Fieldbus segment protector is provided with actual trunk connectors, and actual spur connectors, so the modular Fieldbus segment protector is a stand-alone device which can be readily plugged into an existing Fieldbus system.
  • the modular Fieldbus segment protector is not provided with any secondary switch means, such that removal of a fault isolation means from between the trunk connection bus and a spur outlet isolates that spur outlet.
  • any secondary switch means such that removal of a fault isolation means from between the trunk connection bus and a spur outlet isolates that spur outlet.
  • the secondary switch means are provided with deactivation means, the operation of which prevents the secondary switch means connecting the spur outlets to the trunk connection bus when a fault isolation means is not mounted between them.
  • deactivation means the operation of which prevents the secondary switch means connecting the spur outlets to the trunk connection bus when a fault isolation means is not mounted between them.
  • the backplanes support other devices, including a simple direct spur connection module without any fault isolation features, and/or a passive device with a PCB connection and / or voltage limiting components or modules and/or additional spur protection electronics.
  • Fieldbus segment protection is provided in a modular and flexible fashion, so the required devices can be utilized more effectively.
  • the invention provides for removal of Fieldbus segment protection from individual spurs without any interruption in electrical supply. Further, each spur is provided with its own autonomous protection which prevents other parts of the system from being affected by faults.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Details Of Indoor Wiring (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Surface Heating Bodies (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Installation Of Bus-Bars (AREA)

Abstract

A modular Fieldbus segment protector comprising a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.

Description

Modular Fieldbus Segment Protector
This invention relates to a Modular Fieldbus Segment Protector for use in connecting electrical devices to a trunk connection bus.
Known Fieldbus segment protection generally comprises a block containing a plethora of spur outlets. This is not an economic or versatile configuration as many spur outlets are often left unused.
It is possible to use T couplers but these increase the footprint size, increase the number of terminal connections and generally increases the cost of manufacture and use.
In addition, the known types of block couplers do not allow the live replacement of any faulty spur autonomous components. In order to remove a spur module the trunk connection must be broken.
The present invention is intended to overcome some of the above problems.
Therefore, according to a first aspect of the present invention a modular Fieldbus segment protector comprises a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
Therefore, the invention provides a modular system in which self-contained fault isolation means can be utilised where and when necessary by only being applied to particular spur outlets. As the fault isolation means are removable from the support means, they can also be moved about thereon and applied to the spur outlets as desired. In addition, with this arrangement each spur outlet is provided with its own autonomous fault isolation means.
It will be appreciated that the invention includes a modular Fieldbus segment protector in which removal of a fault isolation means from between the trunk connection bus and a spur outlet will isolate the spur outlet, and any spur connected thereto, from the trunk connection bus.
However, in a preferred embodiment of the invention secondary switch means can be provided between the trunk connection bus and one or more of the plurality of spur outlets. Each secondary switch means can be adapted to connect its spur outlet to the trunk connection bus when a fault isolation means is not mounted between the trunk connection bus and that spur outlet
The secondary switch means can be adapted to automatically connect its spur outlet to the trunk connection bus when a fault isolation means is removed from between them, and to automatically break that connection when a fault isolation means is returned to between them.
With this arrangement the removal of one of the fault isolation means does not isolate the spur outlet, and therefore any spur connected thereto. As such a faulty fault isolation means can be removed and replaced without isolating a spur and interrupting electrical supply to a device connected thereto.
In one arrangement the secondary switch means can be provided with deactivation means, the operation of which prevents the secondary switch means connecting its spur outlet to the trunk connection bus when a fault isolation means is not mounted between them. The deactivation means can be manual or otherwise.
Thus, if it is desired to isolate a particular spur outlet, and a spur mounted thereon, then the deactivation means can be operated and the fault isolation means can be removed from between the spur outlet and the trunk connection bus. Also, if a fault isolation means is not present, and the secondary switch means is connecting the spur outlet to the trunk connection bus, then the deactivation means can be operated at any time to isolate the spur.
Preferably each one of the plurality of spur outlets is provided with a secondary switch means of any of the kinds described above.
The fault isolation means can comprise an electrical circuit adapted to transition to high impedance if a short circuit or low resistance fault occurs at a spur. There are several known types of electrical circuit which can be used.
The trunk connection means can be any known connector, such that the modular Fieldbus segment protector could be retrofit to an existing Fieldbus trunk. Alternatively, the trunk connection bus can be connected to a trunk by being integrally formed thereon. Such an arrangement would be suitable if the modular Fieldbus segment protector of the invention were integrated into a new Fieldbus trunk system.
Likewise, the spur outlets can be any know connectors, such that the modular Fieldbus segment protector can be retrofit to an existing Fieldbus trunk, and such that different spurs can be connected and disconnected thereto as desired in use. Alternatively, spurs can be integrally formed onto the support means, and as such the spur connectors can comprise the connection points between the spurs and the support means. Such an arrangement would be suitable if the modular Fieldbus segment protector of the invention were integrated into a Fieldbus trunk system in which the spurs were not disconnectable.
The support means can comprise a backplane carrying the trunk connection bus, the removable fault isolation means and the plurality of spur outlets. However in a more advantageous construction of the invention, the support means can comprise a plurality of separate backplanes each carrying a trunk connection bus and a spur outlet. One or more of the backplanes can also carry a fault isolation means, according to the invention.
With this construction the trunk connection means of the invention can comprise connectors which can connect the backplanes to a trunk. In addition, the connectors can also be adapted to connect one backplane to another, so any number of backplanes can be daisy-chained together between connections to the trunk. Such connectors might be so-called D connectors. With this arrangement a modular trunk connection bus runs through all the backplanes, and a separate spur outlet is provided at each backplane.
This arrangement allows any number of backplanes to be incorporated into a Fieldbus system as required. This modular system eliminates the occurrence of redundant spur outlets.
The support means of the invention can also be adapted to support other devices. For example, any device could be mounted between the trunk connection means and the trunk connection bus to serve any particular purpose. Such a device might be a simple direct spur connection module without any fault isolation features, or it could be a passive device with a PCB connection. Other types of additional circuitry could also be included here, for example voltage limiting components or modules, and/or additional spur protection electronics.
As stated above, the modular Fieldbus segment protector of the invention could be fully integrated into a Fieldbus system.
Therefore, according to a second aspect of the present invention a Fieldbus system is provided with a modular Fieldbus segment protector comprising a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
Two embodiments of the invention will now be described by way of example and with reference to the accompanying drawings, in which:
Figure 1 is a diagrammatic view of a first modular Fieldbus segment protector according to the present invention; and,
Figure 2 is a diagrammatic view of a second modular Fieldbus segment protector according to the present invention.
(In the following examples terminators are not included, but it will be appreciated that they may be inserted at any point in the system.)
As shown in Figure 1 a modular Fieldbus segment protector comprises a support means, in the form of backplane 1, provided with trunk connection means, a trunk connection bus 6 and a plurality of spur outlets. (In the example shown the backplane 1 is simply mounted on a trunk 2, and as such the "trunk connection means" in this case comprises the incoming and outgoing trunk wires. In addition, the spurs, only one of which 7 is shown, are simply connected to the backplane I1 and as such the "spur outlets" of the invention comprise those connection points.) Autonomous fault isolation means, in the form of spur isolators 3, 3a, and 3b to 3n are removably mounted on the support means (1) between the trunk connection bus 6 and any one or more of the plurality of spur outlets, as is illustrated in Figure 1.
Secondary switch means in the form of shunt switches, only one of which 4 is visible, are provided between the trunk connection bus 6 and the spurs 7. The shunt switches 4 automatically connect the spurs 7 to the trunk connection bus 6 when a spur isolator 3 is removed from between them. This connection is broken when a spur isolator 3 is returned. The means by which the shunt switches 4 automatically connect the spurs 7 to, and disconnect the spurs 7 from, the trunk connection bus 6 can be any known trip devices.
The spur isolators 3, 3a and 3b to 3n comprise electrical circuits adapted to transition to high impedance if a short circuit or low resistance fault occurs at a spur 7. Such technology is well known and is not further described here.
In use the spur isolators 3, 3a and 3b to 3b connect the spurs 7 to the trunk connection bus 6, so that devices (not shown) connected to the spurs 7 are provided with electrical power and can operate.
The spur isolators 3, 3a and 3b to 3n operate to protect the spur 7 and the trunk 2 from any short circuits or breaks which may occur in the system. As the spur isolators 3, 3a and 3b to 3n are autonomous they can isolate separate parts of the system without affecting others.
As the spur isolators 3, 3a and 3b to 3n are removable from the backplane 1 they can be applied to connect particular spurs 7 to the trunk connection bus 6 as required. For example where a spur 7 is not being used, a spur isolator 3, 3a and 3b to 3n is not required and can be utilised elsewhere. This flexibility allows for a targeted, and therefore more economic, use of resources.
If a spur isolator 3, 3a and 3b to 3n is removed from between the trunk connection bus 6 and a particular spur 7, as is shown in Figure I1 then the shunt switch 4 automatically connects the spur 7 directly to the trunk connection bus 6. As such, a spur isolator 3, 3a and 3b to 3n can be removed from the backplane 1 for whatever reason, and there will be no interruption in electrical supply to the spur 7, and any device connected thereto. This allows for the live removal and replacement of spur isolators 3, 3a and 3b to 3n in use. In particular it prevents devices from being disconnected by accident. Figure 2 shows a variation of the invention in which the support means comprises a plurality of separate backplanes Ia and Ib to In, each carrying a single trunk connection bus and a spur outlet. In Figure 2 each backplane Ia and Ib to In also carries a spur isolator, and in each case shunt switches as described above are provided.
Each of the backplanes Ia and Ib to In is provided with the female part of a D connector at one side, and the male part of a D connector at the opposite side (not shown). As such, each backplane Ia and Ib to In can be connected to the trunk, either at an inlet or an outlet, and the backplanes Ia and Ib to In can be connected together. Therefore, any number of backplanes can be daisy-chained together between connections to the trunk. In Figure 2 backplanes Ia and Ib are connected together in such a chain, between connections to the trunk. It will be appreciated that any number of such backplanes can be connected together in this way, and the hashed outline of In in Figure 2 is intended to indicate this capability.
With this arrangement a modular trunk connection bus 6 runs through these backplanes Ia and Ib to In, and a separate spur outlet is provided at each backplane Ia and Ib to In. It will be appreciated that this arrangement allows any number of backplanes to be incorporated into a Fieldbus system as required, and such a modular system eliminates the occurrence of redundant spur outlets.
As such the modular Fieldbus segment protector shown in Figure 2 has two levels of modular flexibility. The spur isolators can be removed from the backplanes Ia and Ib to In, and moved between them if desired, and in addition, the number of actual spur outlets provided can be adjusted by removing or adding backplanes.
The present invention also includes a Fieldbus system provided with a modular Fieldbus segment protector as described above. This invention is supported by Figure 1, in which the modular Fieldbus segment protector is integrally mounted on a Fieldbus trunk, and the spurs are integrally mounted on the modular Fieldbus segment protector. Therefore a Fieldbus system according to the second aspect of the present invention is supported by the Figures.
The present invention can be altered without departing from the scope of Claim 1. In particular, in an alternative embodiment (not shown), the modular Fieldbus segment protector is provided with actual trunk connectors, and actual spur connectors, so the modular Fieldbus segment protector is a stand-alone device which can be readily plugged into an existing Fieldbus system.
In another alternative embodiment (not shown) the modular Fieldbus segment protector is not provided with any secondary switch means, such that removal of a fault isolation means from between the trunk connection bus and a spur outlet isolates that spur outlet. Such a version may be preferred in some cases.
In another alternative arrangement (not shown) the secondary switch means are provided with deactivation means, the operation of which prevents the secondary switch means connecting the spur outlets to the trunk connection bus when a fault isolation means is not mounted between them. Such a version provides greater flexibility of use.
In a further alternative embodiments (not shown) the backplanes support other devices, including a simple direct spur connection module without any fault isolation features, and/or a passive device with a PCB connection and / or voltage limiting components or modules and/or additional spur protection electronics.
Thus, Fieldbus segment protection is provided in a modular and flexible fashion, so the required devices can be utilized more effectively. In addition, the invention provides for removal of Fieldbus segment protection from individual spurs without any interruption in electrical supply. Further, each spur is provided with its own autonomous protection which prevents other parts of the system from being affected by faults.

Claims

Claims
1. A modular Fieldbus segment protector comprising a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
2. A modular Fieldbus segment protector as claimed in Claim 1 in which secondary switch means are provided between the trunk connection bus and one or more of the plurality of spur outlets, in which each secondary switch means is adapted to connect its associated spur outlet to the trunk connection bus when a fault isolation means is not mounted between the trunk connection bus and that spur outlet.
3. A modular Fieldbus segment protector as claimed in Claim 2 in which each secondary switch means is adapted to automatically connect its associated spur outlet to the trunk connection bus when a fault isolation means is removed from between the trunk connection bus and that spur outlet, and in which each secondary switch means is adapted to automatically break said connection when a fault isolation means is returned to between the trunk connection bus and that spur outlet.
4. A modular Fieldbus segment protector as claimed in Claim 3 in which each secondary switch means is provided with deactivation means, the operation of which prevents the secondary switch means connecting its associated spur outlet to the trunk connection bus when a fault isolation means is not mounted between the trunk connection bus and that spur outlet
5. A modular Fieldbus segment protector as claimed in Claim 4 in which the deactivation means is manually operable.
6. A modular Fieldbus segment protector as claimed in any of Claims 2 and 5 in which each one of the plurality of spur outlets is provided with a secondary switch means.
7. A modular Fieldbus segment protector as claimed in any of the preceding Claims in which the support means comprises a backplane carrying the trunk connection bus, the removable fault isolation means and the plurality of spur outlets.
8. A modular Fieldbus segment protector as claimed in any of Claims 1 to 6 in which the support means comprises a plurality of separate backplanes each carrying a trunk connection bus and one spur outlet, and in which one or more of the backplanes carries a fault isolation means removably mounted thereon between the trunk connection bus and the spur outlet
9. A modular Fieldbus segment protector as claimed in Claim 8 in which the trunk connection means comprises connectors adapted to connect each of the plurality of backplanes to a trunk with which the modular Fieldbus segment protector is used, and in which said connectors are further adapted to connect one backplane to another, so any umber of backplanes are daisy-chainable together between connections to said trunk.
10. A modular Fieldbus segment protector as daimed in any of the preceding Claims in which the support means is adapted to support further electronic or electrical Fieldbus devices.
11. A modular Fieldbus segment protector as claimed in Claim 10 in which a direct spur connection module is mounted between the trunk connection means and the trunk connection bus.
12. A Fieldbus system provided with a modular Fieldbus segment protector comprising a support means provided with trunk connection means, a trunk connection bus and a plurality of spur outlets, in which autonomous fault isolation means are removably mounted on the support means between the trunk connection bus and any one or more of the plurality of spur outlets.
PCT/GB2006/002758 2005-07-21 2006-07-21 Modular fieldbus segment protector WO2007010289A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06765085.3A EP1905056B2 (en) 2005-07-21 2006-07-21 Modular fieldbus segment protector
AT06765085T ATE472166T1 (en) 2005-07-21 2006-07-21 MODULAR FIELDBUS SEGMENT PROTECTION DEVICE
US11/988,950 US8467196B2 (en) 2005-07-21 2006-07-21 Modular fieldbus segment protector
CA2615608A CA2615608C (en) 2005-07-21 2006-07-21 Modular fieldbus segment protector
DE602006015059T DE602006015059D1 (en) 2005-07-21 2006-07-21 MODULAR FIELDBUS SEGMENT PROTECTION DEVICE
CN2006800262027A CN101223620B (en) 2005-07-21 2006-07-21 Modular fieldbus segment protector
BRPI0613779-2A BRPI0613779A2 (en) 2005-07-21 2006-07-21 modular fieldbus segment protector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0514906.7A GB0514906D0 (en) 2005-07-21 2005-07-21 Modular segment protector
GB0514906.7 2005-07-21

Publications (1)

Publication Number Publication Date
WO2007010289A1 true WO2007010289A1 (en) 2007-01-25

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ATE472166T1 (en) 2010-07-15
BRPI0613779A2 (en) 2011-02-01
EP1905056B1 (en) 2010-06-23
EP1905056A1 (en) 2008-04-02
US8467196B2 (en) 2013-06-18
CA2615608C (en) 2014-04-22
GB0514906D0 (en) 2005-08-24
CN101223620B (en) 2011-04-20
CN101223620A (en) 2008-07-16
US20090215324A1 (en) 2009-08-27
EP1905056B2 (en) 2013-08-07
CA2615608A1 (en) 2007-01-25
DE602006015059D1 (en) 2010-08-05

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