Safety Manual - Tuv-fs.com

More documents

Recommendations

Info

2.5 On-line Change 2-10ProSafe-RS allows both the application to be modified and the I/O module settings tobe changed on-line. Before On-line Change, analyze its impact on the system, provideexternal measures when necessary or appropriate, and then execute it with much caution.• On-line Change ConsiderationAfter modifying the application and <strong>com</strong>pleting the check, the modified part needs to be testedwith On-line Change Download. Before On-line Change Download, change the SCS SecurityLevel to Level 1, and return it to Level 2 after <strong>com</strong>pletion of the test.To prevent a system error, On-line Change Download must not be performed while maintenanceoverride operation by HIS is going on.On-line Change can cause the following system behavior. Use the Forcing Function or Fixing AllOutput Function, if necessary to prevent unnecessary shutdown, and provide the outside of SCSwith proper measures for emergency situations in advance.• System malfunction due to unintended error of application.• Temporary stop of I/O module function, due to the I/O setting change.SEEALSO For the detailed procedure for On-line Change, refer to ProSafe-RS Engineering Guide (IM 32S01C10-01E)• Check List for On-line ChangeTableCheck List for On-line ChangeNo. Description Check1 Has the plan of modification been reviewed and approved?2 Does the modification need to be done on-line?3Has the impact of the on-line change on the system been analyzed and the results fullyunderstood?4 Are the Integrity Analyzer and Cross Reference Analyzer used for change verification?5 Has the Forcing Function or Fixing All Output Function been taken into account?6 Have the adequate measures for emergency situation been prepared outside SCS?7 Has the procedure for the on-line change been clearly established?IM 32S01S10-01E3rd Edition : Oct.30,2006-00
2.6 Forcing 2-11This section explains the consideration at the time of performing the Forcing Function.• Forcing FunctionThe forcing function of the SENG is for locking and forcing the values on I/O channels and thevariables used in application logic.To start the forcing function, change the SCS Security Level to Level 1.When operating from the SENG, make sure that the correct variables are locked.To return to the normal operation, unlock all the I/O channels and variables, and change the SCSSecurity Level to Level 2.Using the dedicated FB helps management of the forcing condition, such as the number oflocked variables and forced unlocking of locked variables.For performing the forcing function, which is used for maintenance of devices and for On-lineChange, analyze the impact on the system and take adequate measures beforehand.• Check List for ForcingTableCheck List for ForcingNo. Description Check1 Has the impact of the forcing on the system been analyzed and the results fully understood?2 Has the use of the dedicated FB for managing the forcing condition been taken into account?3 Has the procedure for forcing been clearly established?4Does the procedure include the instruction that all the variables must be unlocked andbacked to normal after the end of forcing?5 Have the adequate measures for emergency situations been prepared outside SCS?IM 32S01S10-01E2nd Edition : May 27,2005-01
Page 1: User’sManualSafety ManualIM 32S01
Page 4 and 5: Safety Precautionsiii• Safety, Pr
Page 6 and 7: Documentation Conventionsv• Typog
Page 8 and 9: Copyright and Trademark Noticesvii
Page 10 and 11: 1. Safety Lifecycle 1-1The IEC 6150
Page 12 and 13: 2.2 Hardware ConfigurationThis sect
Page 14 and 15: 2-4• Diagnosis of Field WiringA d
Page 16 and 17: 2.3 Application DevelopmentThis sec
Page 18 and 19: • Check List for Application Deve
Page 22 and 23: 2.7 Maintenance Override 2-12This s
Page 24 and 25: Appendix A Product Support App.A-1P

Safety Manual - Tuv-fs.com

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?