Service manual

TOC - 7
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
List of Tables and Figures
Table/Figure Page Number
Table 3-1. Digital I/O ..............................................................................................................................3-3
Table 3-2. Analog Inputs......................................................................................................................... 3-5
Table 3-3. Analog Outputs...................................................................................................................... 3-7
Table 3-4. Analog Input Jumper Tables ...................................................................................................3-12
Table 10-1. Status Symbols ....................................................................................................................10-4
Table 14-1. Command Shaft Rotation Required By Actuator ................................................................... 14-4
Table 14-2. Slide Valve Troubleshooting Guide ....................................................................................... 14-5
Table 14-3. LED Blink Codes and Troubleshooting Guide .........................................................................14-7
Table 22-1. Security Access Levels ..........................................................................................................22-4
Table A. Vission 20/20 Troubleshooting Guide ........................................................................................A-1
Figure 1-1. Operational Flow Charts .......................................................................................................1-1
Figure 2-1. Vission 20/20 with Individual Transformer ............................................................................2-1
Figure 2-2. EMI and Vission 20/20 ..........................................................................................................2-1
Figure 2-3. Ground Wiring .....................................................................................................................2-2
Figure 2-4. Mixed Voltage Wiring ...........................................................................................................2-2
Figure 2-5. Correct Transformer Wiring Method ....................................................................................2-3
Figure 2-6. Incorrect Transformer Wiring Method ..................................................................................2-3
Figure 3-1. Hardware Architecture Overview .........................................................................................3-1
Figure 3-2. Digital I/O Board Layout........................................................................................................3-7
Figure 3-3. Digital Output Board Layout .................................................................................................3-8
Figure 3-4. Digital Input Board Layout ....................................................................................................3-9
Figure 3-5. Digital Input-Output Board Layout ........................................................................................3-10
Figure 3-6. Analog Input Board Layout ...................................................................................................3-11
Figure 3-7. Analog Output Board Layout ................................................................................................3-14
Figure 4-1. Main Screen..........................................................................................................................4-1
Figure 4-2. Top Status Bar ......................................................................................................................4-2
Figure 4-3. Parameter Bar ......................................................................................................................4-3
Figure 4-4. Unit Start Pop-Up Window ...................................................................................................4-4
Figure 4-5. Bottom Status Bar ................................................................................................................4-5
Figure 4-6. Splash Screen .......................................................................................................................4-6
Figure 5-1. Menu Screen ........................................................................................................................5-1
Figure 5-2. Menu Screen with Remote Oil Cooler Enabled.......................................................................5-2
Figure 6-1. Compressor Control Screen - Suction Pressure Control .........................................................6-1
Figure 6-2. Compressor Control Screen - Process Temperature Control ..................................................6-2
Figure 6-3. Proportional Band & Setpoint ...............................................................................................6-3
Figure 6-4. Compressor Control Screen - VFD Settings Control ............................................................... 6-4
Figure 6-5. VFD One-Step Control Method ............................................................................................. 6-5
Figure 6-6. VFD Two-Step Control Method .............................................................................................6-5
Figure 6-7. Compressor Control Screen - Pumpdown/Pulldown Control ................................................ 6-6
Figure 6-8. Compressor Control Screen - Misc. 1 (Control Mode) ............................................................ 6-8
Figure 6-9. Compressor Control Screen - Misc. 2 (Economizer & Hot Gas Bypass Control) ....................... 6-9
Figure 6-10. Compressor Control Screen - Oil Control & Liquid Injection Control .................................... 6-11
Figure 7-1. Alarms and Trips Screen - Page 1 ...........................................................................................7-1
Figure 7-2. Alarms and Trips Screen - Page 1 as Level 2 User ....................................................................7-2
Figure 7-2. Alarms and Trips Screen - Page 2 ...........................................................................................7-3
Figure 7-2. Alarms and Trips Screen - Page 3 ..........................................................................................7-4
Figure 8-1. Timers Screen - Page 1 ..........................................................................................................8-1
Figure 8-2. Timers Screen - Page 2 ..........................................................................................................8-3
Figure 9-1. Compressor Scheduling Screen ............................................................................................9-1
Figure 10-1. Compressor Sequencing Screen - Page 1 ............................................................................10-1
Figure 10-2. Compressor Sequencing Screen - Page 2 ............................................................................10-2
Figure 10-3. Compressor Sequencing Screen - Page 3 ............................................................................10-3
Figure 11-1. Condenser Control Screen - Page 1 .....................................................................................11-1