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07.03a

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07.03a

  1. 1. LOGO M03 EQUIPMENT MAINTENANCE TASK 07.03 (Troubleshoot Automation System) Disediakan oleh; NOR HIDAYAH BINTI MOHAMED JAAFAR ADTEC Shah Alam ELECTRONIC INDUSTRI LEVEL 4
  2. 2. PENYELENGGARAAN HIDRAULIK LOGO  Prestasi, kecekapan dan jangka hayat suatu sistem hidraulik adalah amat penting. 3 prosedur penyelenggaraan asas bagi suatu sistem hidraulik adalah : Menjaga kebersihan dan kuantiti minyak hidraulik dengan mengunakan jenis minyak dan kepekatan yang sesuai.  Menukar penapis minyak mengikut jadual dan apabila perlu.  Memastikan semua sambungan ketat supaya tiada udara masuk ke dalam sistem.
  3. 3. KENALPASTI KEROSAKAN Kerosakan umum pada hidraulik :     Overheat Noise Sistem pengaliran tidak betul Tekanan tidak sesuai Salah operasi LOGO
  4. 4. LOGO Remedies: a Any or all of the following: Replace dirty filters; wash strainers in solvent compatible with system fluid; clean clogged inlet line; clean or replace reservoir breather vent; change system fluid; change to proper pump drive motor speed; overhaul or replace supercharge pump; fluid may be too cold. b Any or all of the following: Tighten leaking connections; fill reservoir to proper level (with rare exception all return lines should be below fluid level in reservoir); bleed air from system; replace pump shaft seal (and shaft if worn at seal journal). c Align unit and check condition of seals, bearings and coupling. d Install pressure gauge and adjust to correct pressure. e Overhaul or replace.
  5. 5. LOGO Remedies: a Any or all of the following: Replace dirty filters; clean clogged inlet line; clean or replace reservoir breather vent; change system fluid; change to proper pump drive motor speed; overhaul or replace supercharge pump b Any or all of the following: Tighten leaking connections; fill reservoir to proper level (with rare exception all return lines should be below fluid level in reservoir); bleed air from system; replace pump shaft seal (and shaft if worn at seal journal). c Align unit and check condition of seals and bearings; locate and correct mechanical binding; check for work load in excess of circuit design. d Install pressure gauge and adjust to correct pressure (keep at least 125 PSI difference between valve settings). e Overhaul or replace. f Change filters and also system fluid if improper viscosity; fill reservoir to proper level. g Clean cooler and/or cooler strainer; replace cooler control valve; repair or replace cooler.
  6. 6. LOGO Remedies: a Any or all of the following: Replace dirty filters; clean clogged inlet line; clean or replace reservoir breather vent; fill reservoir to proper level; overhaul or replace supercharge pump. b Tighten leaking connections. c d e f g h Check for damaged pump or pump drive; replace and align coupling. Adjust. Overhaul or replace. Check position of manually operated controls; check electrical circuit on solenoid operated controls; repair or replace pilot pressure pump. Reverse rotation. Replace with correct unit.
  7. 7. LOGO Remedies: a Replace dirty filters and system fluid. b Tighten leaking connections (fill reservoir to proper level and bleed air from system). c Check for damaged pump or pump drive; replace and align coupling. d Adjust. e Overhaul or replace.
  8. 8. LOGO Remedies: a Fluid may be too cold or should be changed to clean fluid of correct viscosity. b Locate bind and repair. c Adjust, repair or replace. d Clean and adjust or replace; check condition of system fluid and filters. e Overhaul or replace. f Repair command console or interconnecting wires. g Lubricate. h Adjust, repair or replace counterbalance valve.
  9. 9. PLC TROUBLESHOOT LOGO Diprogram supaya boleh mengawal machine secara automatic. Mengandungi power supply, terminal program, input dan output.
  10. 10. STATUS INDICATOR DAN KOD ERROR LOGO  Status indicator dan kod error digunakan untuk membantu troubleshooter menyelesaikan masalah supaya downtime dapat dikurangkan.  Status Indicator  adalah lampu yang menunjukkan keadaan komponen di dalam sistem PLC.  diletakkan pada setiap bahagian penting  2 jenis iaitu 1) input/output status indicator 2) operating and fault status indicator  Kod Error  adalah nombor atau mesej yang dipapar pada skrin apabila program mengenalpasti sesuatu masalah berlaku di dalam sistem.
  11. 11. STATUS INDICATOR LOGO
  12. 12. KOD ERROR LOGO
  13. 13. STARTUP PROSEDUR LOGO  Ia adalah prosedur sistematik,bertujuan menghapuskan masalah yang mana boleh menyebabkan kecederaan dan kerosakan peralatan.  Masalah startup yang biasa adalah : Peralatan tidak berfungsi.  Kesilapan pendawaian.  Programming error.  Startup prosedur mesti selalu dipatuhi pada permulaan peralatan dipasang dan selepas software/hardware diubahsuai.
  14. 14. PLC STARTUP PROSEDUR LOGO 1)Pemeriksaan sistem – semua komponen perlu diperiksa dari segi pendawaian, program dll sebelum bekalan kuasa diberi. 2)Disable peranti yang bergerak – perlu disable motor, solenoid, valve untuk elakkan kecederaan dan kerosakan peralatan.
  15. 15. Cont..PLC STARTUP PROSEDUR LOGO 3) Sahkan program – Run mode supaya sistem boleh simulate program tanpa menghidupkan peranti. Simulate setiap kali terdapat perubahan pada program. 4) Troubleshoot peranti input – Isyarat dan maklumat dihantar pada PLC menggunakan pushbutton, limit switch. Peranti ini perlu beroperasi dengan baik supaya maklumat dapat diproses.
  16. 16. Cont..PLC STARTUP PROSEDUR LOGO 5) Troubleshoot peranti output – Peranti output seperti motor starter, solenoid, contactors, lampu mesti beroperasi dengan baik digunakan untuk menjalankan kerja yang diarahkan oleh program. 6)Testing sistem – Sistem yang lengkap mesti ditest. Emergency stop button digunakan untuk memutuskan bekalan utama.
  17. 17. TROUBLESHOOT FLOWCHART Sesetengah pengeluar PLC menyediakan troubleshoot flowchart sebagai panduan. LOGO
  18. 18. LOGO Click to edit company slogan .

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