15 diagnostics troubleshooting Training PLC Allen Bradley

DAY SESSION 15-1 DIAGNOSTICS & TROUBLESHOOTING Diagnostics & Troubleshooting – 10 December 2010 FAULT OVERVIEW • Fault is unexpected condition that had bad effect to the process • Whether it cause a major problem or minor • Depending on the application, it may not make all faults to shut down your entire system • It can use a fault routine to clear a specific fault and let at least some of the system continue to operate 15-2 • And also can be used to monitor a minor fault which is will not shutdown the controller Diagnostics & Troubleshooting – 10 December 2010 FAULT CONDITION • According to the effect/severity caused by the fault it can be classify to two condition • Major Fault • Minor Fault • Major Fault is a fault condition that severe enough for the controller to shutdown 15-3 • Minor Fault is a fault condition isn’t too severe for the controller to shutdown Diagnostics & Troubleshooting – 10 December 2010 MAJOR FAULT CONDITION • By what does it caused, Major Fault can be classified to three condition • First is execution fault of an instruction • Second is system fault including power loss, IO failure, task watchdog,mode change, and motion axis 15-4 • The last is user defined error or fault Diagnostics & Troubleshooting – 10 December 2010 MINOR FAULT CONDITION • Minor Fault classify as the Minor system Fault and Minor instruction Fault • System Fault 15-5 • Periodic Task Overlap • Load from nonvolatile Memory • Problem with serial port • Low Battery • Instruction Fault Diagnostics & Troubleshooting – 10 December 2010 MONITORING MINOR SYSTEM FAULT • Periodic Task Overlap: Monitoring the bit from FAULTLOG object MinorFaultBits Attribute • Load from Nonvolatile memory: Monitoring the bit from FAULTLOG object MinorFaultBits Attribute • Problem with the serial port: Monitoring the bit from FAULTLOG object MinorFaultBits Attribute 15-6 • Low Battery: Monitoring the 10 bit from FAULTLOG object MinorFaultBits Attribute Diagnostics & Troubleshooting – 10 December 2010 MONITORING MINOR INSTRUCTION FAULT • Monitoring Minor Instruction Fault involving S:MINOR ,Minor Fault Flag status register, for the Minor Fault Condition 15-7 • When S:MINOR set, which that mean an Minor Fault happened, detail fault information is catch by GSV command Diagnostics & Troubleshooting – 10 December 2010 CLEAR FAULT VIA MENU • Saat processor mengalami fault, harus dicarikan dan dikoreksi penyebabnya sebelum mencoba menghilangkan fault • Jika penyebab belum ditemukan, processor akan berperilaku yang tidak diharapkan • Jika processor MicroLogix 1000 atau ControlLogix 500 mengalami fault, harus dihilangkan fault-nya sebelum program jalan Untuk menghilangkan fault pada processor, pilih Comms > Clear Fault 15-8 FAULTED Diagnostics & Troubleshooting – 10 December 2010 15-9 CLEAR FAULT VIA STATUS DISPLAY Diagnostics & Troubleshooting – 10 December 2010 15-10 STATUS DISPLAY(1) Diagnostics & Troubleshooting – 10 December 2010 15-11 STATUS DISPLAY(2) Diagnostics & Troubleshooting – 10 December 2010 CONTROLLOGIX I/O ERROR(1) • Karakter xx dalam kode menyatakan nomor slot dalam hexadecimal(h) • Jika slot secara eksak tidak bisa ditentukan,karakter xx menjadi 1F • Kebanyakan fault I/O dapat direcoveri, dengan cara mendisable slot(xx) yang bersangkutan pada user fault routine 15-12 • Jika tidak didisable, processor akan fault pada akhir scan • Modul I/O yang rusak dapat menyebabkan processor mengindikasikan bahwa error ada pada slot meskipun modul yang rusak tidak terinstalasi pada slot Diagnostics & Troubleshooting – 10 December 2010 15-13 MAJOR AND MINOR CODE REFERENCES Diagnostics & Troubleshooting – 10 December 2010 15-14 MAJOR FAULT TYPE AND CODE (1) Diagnostics & Troubleshooting – 10 December 2010 15-15 MAJOR FAULT TYPE AND CODE (2) Diagnostics & Troubleshooting – 10 December 2010 15-16 MAJOR FAULT TYPE AND CODE (3) Diagnostics & Troubleshooting – 10 December 2010 15-17 MINOR FAULT TYPE AND CODE (1) Diagnostics & Troubleshooting – 10 December 2010 15-18 MINOR FAULT TYPE AND CODE (2) Diagnostics & Troubleshooting – 10 December 2010 NEXT SESSION 15-19 TRAINING DISCUSSION Diagnostics & Troubleshooting – 10 December 2010 ... Fault 15- 8 FAULTED Diagnostics & Troubleshooting – 10 December 2010 15- 9 CLEAR FAULT VIA STATUS DISPLAY Diagnostics & Troubleshooting – 10 December 2010 15- 10 STATUS DISPLAY(1) Diagnostics & Troubleshooting. .. (1) Diagnostics & Troubleshooting – 10 December 2010 15- 18 MINOR FAULT TYPE AND CODE (2) Diagnostics & Troubleshooting – 10 December 2010 NEXT SESSION 15- 19 TRAINING DISCUSSION Diagnostics & Troubleshooting. .. December 2010 15- 15 MAJOR FAULT TYPE AND CODE (2) Diagnostics & Troubleshooting – 10 December 2010 15- 16 MAJOR FAULT TYPE AND CODE (3) Diagnostics & Troubleshooting – 10 December 2010 15- 17 MINOR