DE9321607U1 - Safety-related programmable logic controller - Google Patents

Safety-related programmable logic controller

Info

Publication number
DE9321607U1
DE9321607U1 DE9321607U DE9321607U DE9321607U1 DE 9321607 U1 DE9321607 U1 DE 9321607U1 DE 9321607 U DE9321607 U DE 9321607U DE 9321607 U DE9321607 U DE 9321607U DE 9321607 U1 DE9321607 U1 DE 9321607U1
Authority
DE
Germany
Prior art keywords
safety
central unit
programmable logic
logic controller
devices
Prior art date
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.)
Expired - Lifetime
Application number
DE9321607U
Other languages
German (de)
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.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
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
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Priority to DE9321607U priority Critical patent/DE9321607U1/en
Priority claimed from DE19934312305 external-priority patent/DE4312305C5/en
Publication of DE9321607U1 publication Critical patent/DE9321607U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • 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
    • G05B2219/20—Pc systems
    • G05B2219/23—Pc programming
    • G05B2219/23458—Remote controller pluggable, attachable to pc
    • 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
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24054—Self diagnostic
    • 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
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24184—Redundant I-O, software comparison of both channels

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (4)

1. Speicherprogrammierbare Steuerung (SPS) mit nur einer Zentraleinheit (2) und mehreren über wenigstens einen Buskoppler (4) und wenigstens einen Eingabe/Aus­ gabe(E/A)-Bus (5) anschließbaren E/A-Geräten (6), wobei alle diese Komponenten (2, 4, 5, 6) Bestandteile einer ein­ kanaligen Standard-SPS (1) sind, dadurch gekennzeichnet, daß die SPS (1) durch nachstehende Ergänzungen zu einer si­ cherheitsgerichteten SPS ertüchtigt ist:
  • a) an den E/A-Bus (5) sind spezielle sicherheitsgerich­ tete E/A-Geräte (7) anschließbar, die intern zweika­ nalig aufgebaut sind und selbsttätig einen Ver­ gleichstest zwischen ihren Kanälen sowie zusätzliche Eigentests durchführen, und
  • b) die Zentraleinheit (2) ist allein durch sicherheits­ gerichtete Programm-Module ergänzt zur Durchführung sicherheitsgerichteter Funktionen, die sich auf si­ cherheitsgerichtete Anwenderfunktionen und zumindest auf eine zur Eigenüberwachung der sicherheitsgerich­ teten E/A-Geräte (7) redundante Überwachung der si­ cherheitsgerichteten E/A-Geräte (7) beziehen, sowie auf eine Selbstüberwachung der Zentraleinheit (2).
1. Programmable logic controller (PLC) with only one central unit ( 2 ) and several I / O devices ( 6 ) that can be connected via at least one bus coupler ( 4 ) and at least one input / output (I / O) bus ( 5 ), All of these components ( 2 , 4 , 5 , 6 ) are components of a single-channel standard PLC ( 1 ), characterized in that the PLC ( 1 ) is strengthened by the following additions to a safety-related PLC:
  • a) to the I / O bus ( 5 ), special safety-related I / O devices ( 7 ) can be connected, which are built internally in two channels and automatically carry out a comparison test between their channels and additional self-tests, and
  • b) the central unit ( 2 ) is supplemented solely by safety-related program modules for carrying out safety-related functions which relate to safety-related user functions and at least to redundant monitoring of the safety-related I / Os for self-monitoring of the safety-related I / O devices ( 7 ) / A devices ( 7 ) relate to self-monitoring of the central unit ( 2 ).
2. Speicherprogrammierbare Steuerung nach Anspruch 1, dadurch gekennzeichnet, daß die Zentraleinheit (2) eine Schnittstelle (8) aufweist, an die ein Personal Computer (3) anschließbar ist, mit dessen Hilfe, die im Anwenderpro­ gramm der Zentraleinheit (2) enthaltenen sicherheitsgerich­ tete Programm-Module ladbar sind, die durch redundante, di­ versitäre Programmierung gesichert sind. 2. Programmable logic controller according to claim 1, characterized in that the central unit ( 2 ) has an interface ( 8 ) to which a personal computer ( 3 ) can be connected, with the help of which the security program contained in the user program of the central unit ( 2 ) Program modules can be loaded, which are secured by redundant, diversary programming. 3. Speicherprogrammierbare Steuerung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die sicherheitsgerich­ teten E/A-Geräte (7) Mittel enthalten zur Durchführung von Plausibilitätstests.3. Programmable logic controller according to claim 1 or 2, characterized in that the safety-related I / O devices ( 7 ) contain means for carrying out plausibility tests. 4. Speicherprogrammierbare Steuerung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Zentraleinheit (2) mit Hilfe der gespeicherten sicherheits­ gerichteten Programm-Module neben gefährlichen Fehlern, die innerhalb einer spezifizierten Fehlertoleranzzeit zur Ab­ schaltung in den sicheren Zustand führen, auch einzeln an sich ungefährliche Fehler innerhalb einer spezifizierten Zweitfehlereintrittszeit erkennt und meldet.4. Programmable logic controller according to one of the preceding claims, characterized in that the central unit ( 2 ) with the help of the stored safety-related program modules in addition to dangerous errors that lead to a safe shutdown within a specified fault tolerance time, also individually per se Detects and reports harmless errors within a specified second error entry time.
DE9321607U 1993-04-15 1993-04-15 Safety-related programmable logic controller Expired - Lifetime DE9321607U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9321607U DE9321607U1 (en) 1993-04-15 1993-04-15 Safety-related programmable logic controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934312305 DE4312305C5 (en) 1993-04-15 1993-04-15 Safety-related programmable logic controller
DE9321607U DE9321607U1 (en) 1993-04-15 1993-04-15 Safety-related programmable logic controller

Publications (1)

Publication Number Publication Date
DE9321607U1 true DE9321607U1 (en) 2000-10-05

Family

ID=25924944

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9321607U Expired - Lifetime DE9321607U1 (en) 1993-04-15 1993-04-15 Safety-related programmable logic controller

Country Status (1)

Country Link
DE (1) DE9321607U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012000084U1 (en) 2012-01-05 2012-04-02 Dirk Stiebert Safety-related fault-tolerant thermal process control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012000084U1 (en) 2012-01-05 2012-04-02 Dirk Stiebert Safety-related fault-tolerant thermal process control

Similar Documents

Publication Publication Date Title
DE4312305C2 (en) Safety-related programmable logic controller
EP0687363B1 (en) Process for testing electronic controllers
EP0026377A2 (en) Computer architecture based on a multimicroprocessor structure as a fail-tolerant system
DE9321607U1 (en) Safety-related programmable logic controller
DE19813364A1 (en) Energy supply for control system
DE2937777C2 (en) Control device in an electronic data processing system for program interruption and for performing forced operations
DE19841194B4 (en) Digital data processing system for safety-related automation tasks for execution as function and sequence diagrams of displayed programs
DE10213754A1 (en) Sensor-machine interface and method for its operation
DE19834331A1 (en) Safety device for a programmable logic controller
AT394461B (en) DEVICE FOR ERROR-TOLERANT INPUT / OUTPUT OF DATA
EP1176508B1 (en) Arrangement for monitoring the correct operation of components which execute the same or corresponding action in an electrical system
DE3807020C2 (en)
DE2932384C2 (en)
DE2402880C2 (en) Fail-safe electronic circuit for converting electrical signals of different duration into signals of a certain duration
DE2544426C2 (en) Fail-safe small signal amplifier
DE3341785A1 (en) Miniature switched-mode power supply
DE4414860A1 (en) Back-up control with programmable controlled industrial process
DE635251C (en) Device for protecting rectifiers or converters
DE3500850A1 (en) Processor system and associated operating method
DE2610761A1 (en) Error simulation circuit in multi module electronic units - employs manual or automatic intermediate logic circuit and programmable microprocessor
DE19805518A1 (en) Method of analysing safety signals for number of safety related system parts or components of power plant
DE29824062U1 (en) Safety device for a programmable logic controller
DE20010739U1 (en) Module for the control or regulation of safety-related processes or procedures for the operation of machines or systems
DE202004007147U1 (en) Operating system for redundant computer-based device has separate operating devices connected to associated central processing units fed with data in parallel via central data input arrangement
DD154244A1 (en) MEMORY ARRANGEMENT WITH ERROR IDENTIFICATION AND DIAGNOSTIC PROPERTIES, PREFERABLY FOR MICROORCHNERS