Emerson Vission 20/20

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Vission 20/20 micro-controller

Operation and service manual • Version 2.0

Main Page

Default Chapter3
- Standard Vilter Warranty Statement3
- Important Message5
- Table of Contents7
- How to Use this Manual14
Section 1 • Operational Flow Charts15
- Requirements to Start Compressor15
- Critical Compressor Run Logic at Compressor Start15
- Compressor Amperage Load Limiting15
- High Discharge Pressure Load Limiting15
- Suction Pressure Override Load Limit During Temperature Control16
Section 2 • Installation Recommendations17
- Proper Wiring Sizing17
- Voltage Source17
- Figure 2-1. Vission 20/20 with Individual Transformer17
- Grounding18
- Mixing Voltages18
- DC Signals18
- Figure 2-3. Ground Wiring18
- Wiring Methods19
- Figure 2-5. Correct Transformer Wiring Method19
- Best Practices20
Section 3 • Hardware Architecture21
- Overview21
- Digital Input/Output (I/O)22
- Table 3-1. Digital I/O23
- Analog Inputs24
- Table 3-2. Analog Inputs25
- Analog Outputs26
- Digital & Analog I/O Boards Layout27
- Digital Outpout Boards28
- Figure 3-3. Digital Output Board Layout28
- Digital Input Boards29
- Digital In-Out Boards30
- Analog Input Boards31
- Analog Input Jumper Tables32
- Analog Output Boards34
Section 4 • Main Screen Overview35
- Top Status Bar36
- Parameter Bar37
- Figure 4-4. Unit Start Pop-Up Window38
- Bottom Status Bar39
- Splash Screen40
Section 5 • Menu Screen Overview41
- Navigation Buttons41
- Figure 5-2. Menu Screen with Remote Oil Cooler Enabled42
Section 6 • Compressor Control43
- Overview43
- Suction Pressure Control and Process Temperature Control43
- Auto-Cycle44
- Figure 6-3. Proportional Band & Setpoint45
- Variable Frequency Drive (VFD)46
- Figure 6-5. VFD One-Step Control Method47
- Rapid Cycling VFD Control48
- Pumpdown Control49
- Pulldown Control49
- Figure 6-8. Compressor Control Screen - Pumpdown/Pulldown Control50
- Control Mode52
- Stop Load & Force Unload52
- Capacity Slide Triggered Outputs53
- Volume Slide Position Offset54
- Soft Load54
- Load Anticipating54
- Oil Control54
- Liquid Injection54
- Figure 6-11. Compressor Control Screen - Oil Control & Liquid Injection Control55
Section 7 • Alarms and Trips Overview57
- Alarms and Trips Setpoints57
- Figure 7-2. Alarms and Trips Screen - Page 1 as Level 2 User58
- Figure 7-2. Alarms and Trips Screen - Page 259
- Figure 7-2. Alarms and Trips Screen - Page 360
- Compressor Inhibits61
- Safety Failure Messages61
- Compressor Warnings62
Section 8 • Timers Overview63
- Timer Setpoints63
- Figure 8-2. Timers Screen - Page 265
Section 9 • Compressor Scheduling67
- Overview67
- Scheduling Setpoint67
Section 10 • Compressor Sequencing69
- Overview69
- Pressure / Temperature Control Setpoints69
- Capacity Load/Unload Timers70
- Compressor Sequencing Table71
- Table 10-1. Status Symbols72
- Configuration Overview73
Section 11 • Condenser Control77
- Overview77
- Condenser Control Setpoint77
- Step Control78
- VFD Settings79
- Figure 11-2. Condenser Control Screen - Page 280
Section 12 • Service Options81
- Overview81
- Digital Outputs81
- Figure 12-2. Service Options Screen - Digital Outputs (Page 2)82
- Figure 12-3. Service Options Screen - Digital Outputs (Page 3)83
- Figure 12-4. Service Options Screen - Digital Outputs for Remote Oil Cooler (Page 3)84
- Analog Outputs85
Section 13 • Instruments Calibration87
- Overview87
- Pressure and Temperature Inputs87
- Motor Current88
- Figure 13-3. Instruments Calibration Screen - Analog Inputs (Page 3)89
- Remote Capacity90
- Analog Inputs90
- Analog Outputs91
- Figure 13-6. Instruments Calibration Screen - Analog Outputs (Page 6)92
Section 14 • Slide Calibration93
- Overview93
- Capacity Slide Valve Potentiometer93
- Volume Slide Valve Potentiometer94
- Slide Valve Operation94
- Calibrate Slide Valve Actuators95
- Figure 14-3. Menu Screen and Slide Calibration Button (Vission 20/20)96
- Figure 14-4. Photo-Chopper97
- Command Shaft Rotation98
- Slide Valve Troubleshooting Guide99
- Slide Valve Actuator Troubleshooting Guide Blink Code101
Section 15 • Trend Chart103
- Overview103
- Chart Operation103
- Trend Data Storage104
- Setup105
Section 16 • Event List107
- Overview107
- Event List Columns107
Section 17 • Input / Output109
- Overview109
- Figure 17-2. Input/Output Screen - Page 2110
- Figure 17-4. Input/Output Screen - Page 4111
- Figure 17-6. Input/Output Screen - Freeze Data Page112
Section 18 • Auxiliary Input / Output113
- Overview113
- Digital Inputs113
- Digital Outputs114
- Analog Inputs114
- Figure 18-2. Auxiliary I/O Screen - Digital Outputs (Page 2)115
- Analog Outputs116
- Control116
- Figure 18-4. Auxiliary I/O Screen - Analog Inputs (Page 4)117
- Figure 18-6. Auxiliary I/O Screen - Analog Outputs (Page 6)118
Section 19 • Configuration119
- Overview119
- Units119
- Time & Date120
- Communications120
- Touchscreen120
- Anti-Recycle121
- Restart on Power Failure121
- Compressor Sequencing121
- Language121
- Model & Refrigerant121
- Compressor Control122
- Optional Function Selection122
- Vilter Only Settings123
- Condenser Control123
- Oil Pump123
- Oil Cooling123
- Motor Current Device124
- Digital Inputs125
- Analog Inputs126
- Analog Outputs127
- Digital Outputs127
- I/O Configuration128
Section 20 • Data Backup129
- Overview129
- Save / Load129
- Migrate131
- Factory Reset131
- Setpoints Report132
Section 21 • Maintenance133
- Overview133
- Checklist133
- Notes134
- Log134
- Chart134
- Figure 21-3. Maintenance Screen - Chart135
Section 22 • User Access137
- Overview137
- Apply137
- Login138
- Manage Accounts138
- Figure 22-3. User Access Screen - VNC Accounts139
- VNC Account140
- Screen Security Levels140
Section 23 • Help Screen141
- Overview141
- Screen Features141
- Figure 23-2. Help Screen - USB142
Section 24 • Twin Screw Control143
- Overview143
- Setup - Configuration Screen143
- Operation144
- Slide Calibration - Capacity Slide Valve Potentiometer144
- Figure 24-3. Slide Calibration - Twin Screw Bump Pop-Up Window145
Section 25 • Cool Compression Control147
- Overview147
- Setup147
- Control Functions148
- Operational Differences from Single Screw150
Section 26 • Remote Oil Cooler151
- Overview151
- Remote Oil Cooler Setpoint151
- Step Control152
- VFD Settings152
- Figure 26-2. Remote Oil Cooler VFD Screen (Page 2)153
Appendix A • Vission 20/20 Troubleshooting Guide155
- Vission 20/20 Troubleshooting Guide155
Appendix B • Vission 20/20 Application Procedures159
- Vission 20/20 Application Procedures159

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Emerson Vission 20/20 Specifications

General

Brand	Emerson
Model	Vission 20/20
Category	Microcontrollers
Language	English

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