AOpen DE7200 Series Instrucciones de operaciones Pagina 60
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Valorado. / 5. Basado en revisión del cliente
OPERATING INSTRUCTIONS
4-22 30 Sep 13
DE-7200VFDCentrifuge
Excessive Bowl Speed
A sensor that detects the rotating speed of the bowl provides an input to the PLC that produces a
continuous display of actual bowl speed on the Operation and Bowl VFD screens. A fault
message is displayed and the centrifuge is immediately shut down if speed rises to 3100RPM. To
re-start the centrifuge, allow the bowl to coast to a complete stop, check for and remove the
cause of excessive speed as described in Section 5. After correcting defect(s), re-start the
machine using the Normal Startup procedure above, and re-check bowl speed.
Conveyor Clutch Trip
A sensor detects the rotating speed of the torque limiting clutch half installed on the gearbox
shaft. The sensor provides an input to the PLC that continuously displays actual clutch speed on
the Status and Conveyor VFD screens. If the differential speed between the conveyor drive motor
and clutch reaches 50RPM, the clutch speed sensor provides an input to the PLC immediately
causing a clutch trip alarm message to be displayed on the control panel. A fault message is then
displayed, and the centrifuge is shut down.
To reset the clutch following a trip:
1. Shut down, lock out, and tag out centrifuge, and allow the bowl to coast to a complete stop.
2. Remove four bolts and washers securing shaft guard to centrifuge base, and remove shaft
guard to expose clutch.
3. Align the scribe marks on the actuation ring and clutch body (Figure 4-21).
4. Insert two levers (screwdrivers) between the actuation ring and clutch body.
5. Press actuation ring back into engagement.
6. Reinstall and secure shaft guard.
7. Clear all faults, correct any defect(s), and perform Cleanout procedure in this section.
8. Re-start machine using Normal Startup procedure, and re-check clutch speed as shown on
the Conveyor VFD screen.
Figure 4-21. Resetting Clutch Following Trip
- DE-7200 Centrifuge 1
- CONTENTS 5
- Section 6
- CONTENTS 7
- SECTION 1 - INTRODUCTION 9
- EQUIPMENT USE 10
- DESCRIPTION 10
- Rotating Assembly 11
- Drive Motors 12
- Control Cabinet 12
- Case and Base 13
- Vibration Switch 13
- MECHANICAL OPERATION 14
- CONTROL SYSTEM 15
- PRODUCT SUPPORT 16
- CONTACT INFORMATION 16
- SECTION 2 - SAFETY 17
- Equipment Handling 18
- Maintenance 19
- Storage 19
- MSDS’S (CONT’D) 20
- SECTION 3 - INSTALLATION 21
- STORAGE 22
- Rotating Assembly and Motors 22
- INSTALLATION SEQUENCE 23
- EQUIPMENT HANDLING 24
- EQUIPMENT HANDLING (CONT’D) 26
- Liquid Discharge 29
- Solid Discharge Chute 29
- EQUIPMENT LEVELING 29
- FEED AND FLUSH CONNECTIONS 31
- COMPRESSED AIR 33
- FEED PUMP 33
- ELECTRIC POWER CONNECTIONS 33
- Connection Options 33
- POLARITY TEST 36
- SENSOR CONNECTIONS 37
- MACHINE STARTUP 38
- GENERAL 39
- SOFTWARE VERSION 39
- OPERATING SAFETY 39
- Purge System Bypass 40
- INITIAL STARTUP 41
- INITIAL STARTUP (CONT’D) 42
- OPERATING INSTRUCTIONS 43
- NORMAL STARTUP 44
- COLD CLIMATE STARTUP 45
- OPERATION 45
- Bowl Speed 47
- Conveyor Differential Speed 47
- Pond Depth 47
- Pond Depth (Cont’d) 48
- BEARING TEMPERATURES 50
- MOTOR TORQUE TREND 50
- SYSTEM DIAGNOSTICS 51
- PERFORMANCE STATUS 51
- ALARM AND FAULT MESSAGES 52
- VFD STATUS 53
- VFD STATUS (CONT’D) 54
- PUMP VFD FAULT STATUS 54
- VFD TEMPERATURE TRENDS 55
- VFD FAULT RESET 55
- VFD FAULT RESET (CONT’D) 56
- SETUP SCREEN 56
- PUMP SETUP SCREEN 57
- CLEAN OUT 57
- CLEAN OUT (CONT’D) 58
- Automatic Cleanout 58
- Manual Cleanout 58
- NORMAL SHUTDOWN 59
- AUTOMATIC SHUTDOWN 59
- Excessive Vibration 59
- Main Bearing Temperatures 59
- Excessive Bowl Speed 60
- Conveyor Clutch Trip 60
- EMERGENCY SHUTDOWN 61
- Electric Power Shutdown 61
- Mechanical Shutdown 61
- SECTION 5 - MAINTENANCE 63
- PREVENTIVE MAINTENANCE 64
- LUBRICATION CHART 65
- GEARBOX OIL LEVEL CHECK 65
- GEARBOX OIL CHANGE 66
- DRIVE BELT REPLACEMENT 67
- PURGE SYSTEM 69
- Bypassing Purge System 69
- Initial Purge Time Setting 70
- Leakage Compensation Test 71
- Rotating Assembly Removal 73
- Cleaning and Inspection 75
- Installation 76
- RECOMMENDED SPARE PARTS 77
- TROUBLESHOOTING 79
- Troubleshooting Procedure 79
- TROUBLESHOOTING (CONT’D) 80
- Troubleshooting Chart 80
- CONTROL COMPONENT INDICATORS 98
- MAINTENANCE 100
- DE-7200VFDCentrifuge 103
- CONTROL ENCLOSURE ASSEMBLY 141
- DE-7200 EX-PROOF 460/480/60/3 141
- 16472-00-002 141
- DE-7200 EX-PROOF 380/400/3 143
- 16472-00-003 143
- DE-7200 EX-PROOF 575/600/60/3 145
- 16472-00-004 145
- DE-7200 460/480/60/3 147
- 16472-00-005 147
- PURPOSE 149
- DE-7200VFDCentrifuge 150
- INSTALLATION 156
- HMI Server Installation 156
- Electric Power Connections 156
- Ethernet Connections 157
- Appendix A-HMIServerSystem 158
- OPERATING HMI SERVER 159
- Startup and Shutdown 159
- Operation 159
- Operation (Cont’d) 160
- REFERENCE DRAWINGS 164
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