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Execution check by “watchdog” is carried out with respect to three priority levels.
Task reference, supervision time and consequences at exceeded time are given below:
•
Timer task - 100 ms - safety shut-down
•
Application program - 5 s - safety shut-down
•
Idle task - 30 minutes - system message about a system too heavily loaded.
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All I/O modules are checked regarding missing hardware or errors in the addressing logic.
It is common to all I/O modules that, if any error is detected, an alarm and a message go to the
operator. The error is also indicated with a red LED on the front of the board. The application
program handles necessary actions via the data base. Different types of I/O modules have
adapted diagnostics and error handling. For further information on this topic, see
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•
Supervision of the internal 24 V supply and the stabilized 5 V supply
•
Applicable supervision of power supply for sensors
•
Supervision of the battery backup supply.
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Adequate diagnostics and error handling are also available/possible for the following equipment
and functions:
•
Communication links
•
Terminal/printer connection
•
Fans
•
Redundant functions in general.
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The System Status Collector TC520 in the controller subrack performs certain system
supervision. Diagnostic signals from power supply units and fans within the cabinets are
connected to TC520.
The front connector of TC520 provides the connection for four extra user-defined supervisory
signals (24 V). Two of them are intended to be used for redundant I/O voltage supply
supervision. The signal cables may not be extended outside the controller cabinets due to the
risk of interference.
Содержание Advant Controller 450
Страница 1: ...Advant OCS with Master software GYDQW RQWUROOHU User s Guide 3BSE 002 415R701 Rev A ...
Страница 26: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xvi ...
Страница 30: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xx ...
Страница 488: ... GYDQW RQWUROOHU 8VHU V XLGH SSHQGL DUGZDUH 0RGXOHV A 48 3BSE 002 415R701 Rev A ...
Страница 496: ...Advant Controller 450 User s Guide Appendix C Delivery Documentation C 2 3BSE 002 415R701 Rev A ...
Страница 508: ...Advant Controller 450 User s Guide Appendix D Item Designations D 12 3BSE 002 415R701 Rev A ...
Страница 514: ...Advant Controller 450 User s Guide Appendix E Current Consumption and Heat Dissipation E 6 3BSE 002 415R701 Rev A ...
Страница 518: ...Advant Controller 450 User s Guide Appendix F Load Calculation F 4 3BSE 002 415R701 Rev A ...
Страница 522: ...Advant Controller 450 User s Guide Appendix G Memory Calculation G 4 3BSE 002 415R701 Rev A ...
Страница 528: ...Advant Controller 450 User s Guide Appendix H Halt Codes H 6 3BSE 002 415R701 Rev A ...
Страница 561: ...Advant Controller 450 User s Guide Index 3BSE 002 415R701 Rev A iii V Valve control 1 102 VT100 terminal 1 105 ...
Страница 562: ...Advant Controller 450 User s Guide Index iv 3BSE 002 415R701 Rev A ...
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Страница 564: ...3BSE 002 415R701 Rev A March 2000 ...