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Emerson
20/20 service manual 16 2 / Blank
Models:
20/20
1
84
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Install
Operational Flow Charts
Maintenance
Configuration
Wiring Methods
Factory Reset
Setup
Command Shaft Rotation
Timers
DC signals
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Image 84
16 – 2 / Blank
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153
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Contents
Vission 20/20 micro-controller
Page
Table of Contents
TOC
Digital I/O Board Layout Top Status Bar
Compressor Sequencing
Event List
Data Backup
List of Tables and Figures
END of TOC
How to Use This Manual
Operational Flow Charts
Requirements to Start Compressor
Critical Compressor Run Logic at Compressor Start
Compressor Amperage Load Limiting
Operational Flow Charts 2
Installation Recommendations
Proper Wiring Sizing
Voltage Source
DC signals
Grounding
Mixing Voltages
Wiring Methods
Correct Transformer Wiring Method
Best Practices
Hardware Architecture
Overview
Digital Input/Output I/O
Digital I/O 1
Board Description Type
Analog Inputs
Refer to -2. Analog Inputs Motor Current
Digital I/O 2
Analog Inputs 1
Analog Outputs
Digital & Analog I/O Boards Layout
Analog Inputs 2
Digital I/O Board Layout
Digital Output Boards
Digital Output Board Layout
Digital Input Boards
Digital Input Board Layout
Digital In-Out Boards
Digital Input-Output Board Layout
Analog Input Boards
Analog Input Board Layout
Channel Signal
Analog Input Jumper Tables
JP-13 JP-14 JP-15 JP-31
Analog Output Boards
Analog Output Board Layout
Main Screen
Main Screen
Top Status Bar
Top Status Bar
Parameter Bar
Parameter Bar
Unit Start Pop-Up Window
Bottom Status Bar
Bottom Status Bar
Splash Screen
Splash Screen
Menu Screen
Navigation Buttons
Menu Screen
Compressor Control
Pulse Proportional Control
Auto-Cycle
Proportional Band & Setpoint
Variable Frequency Drive VFD
VFD One-Step Control Method
Pumpdown Control
Pulldown Control
Control Mode
Volume Slide Position Offset
Stop Load and Force Unload
Capacity Slide Triggered Outputs
Load Anticipating
Oil Control
Liquid Injection
Compressor Control
Alarms and Trips
Alarms and Trips Setpoints
Alarms and Trips
Safety Failure Messages
Compressor Inhibits
False Start
Timers
Timer Setpoints
Oil Separator Level #2 Safety Trip Delay
Timers
Blank
Compressor Scheduling
Scheduling Setpoint
Compressor Scheduling
Compressor Sequencing
Pressure Control Setpoints
CFM
Equipment List
10 4 / Blank
Condenser Control
Condenser Control Setpoint
Step Control
VFD Settings
Step Control Screen
11 4 / Blank
Service Options
Digital Outputs
Analog Outputs
Pressure and Temperature Inputs
Instruments Calibration
Motor Current
Remote Capacity
Analog Inputs
13 4 / Blank
Slide Calibration
Capacity Slide Valve Potentiometer
Volume Slide Valve Potentiometer
Slide Valve Operation
Slide Valve Actuator Calibration for Optical Style Motors
Photochopper
Command Shaft Rotation
Command Shaft Rotation Required By Actuator
Slide Valve Troubleshooting Guide
Slide Valve Troubleshooting Guide 1
Slide Valve Troubleshooting Guide 2
Slide Valve Actuator Troubleshooting Guide Blink Code
LED Blink Codes and Troubleshooting Guide 1
LED Blink Codes and Troubleshooting Guide 2
Pleted. The actuator will not move while this error code
Trend Chart
Chart Operation
Trend Data Storage
Setup
Trend Setup Screen
15 4 / Blank
Event List
Event list Columns
16 2 / Blank
Input / Output
Input/Output Screen
17 2 / Blank
Auxiliary Input / Output
Digital Inputs
Digital Outputs
Analog Outputs
Control
18 4 / Blank
Configuration
Units
Time & Date
Communications
Touchscreen
Anti-Recycle
Restart On Power Failure
Compressor Sequencing
Language
Model & Refrigerant
Compressor Control
Optional Function Selection
Condenser Control
Oil Pump
Oil Cooling
Motor Current Device
Digital Inputs
Analog Inputs
Analog Outputs
Configuration
19 10 / Blank
Data Backup
Save / Load
Data Backup
Factory Reset
Migrate
20 4 / Blank
Maintenance
Checklist
Chart
Log
User Access
Apply
Login
Manage Accounts
Security Access Levels
Screen Security Levels
22 4 / Blank
Screen Features
Help Screen
Version Pop-Up Screen
Twin Screw Control
Twin Screw Control Screen
Operation
Cool Compression Control
Cool Compression Control Screen
Control Functions
Cool Compression Control Functions Screen
Auto Load Timer
Operational Differences from Single Screw
Cool Compression Control