Emerson 20/20 service manual Instruments Calibration, Pressure and Temperature Inputs

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Section 13 • Instruments Calibration

Overview

The Instrument Calibration screen allows the operator to define how the Vission 20/20 will interpret the signal from any devices attached to the panel’s analog inputs. The instrument calibration screen is organized up to six pages. Each page is then divided into several left side selected tabs. Each tab will be headed with an informa- tion bar labeled “I/O” that give the basic information for that device. The “A/D bit Value” display box shows the unmodified value read by the Vission 20/20 analog to digital converters. This display box is not affected by any changes to the calibrations settings. As long as a de- vice is connected to the associated input, there will be a value in this display box. The “Calibrated Value” dis- play box shows the end result of the calibration process. Therefore, any changes to the calibration setpoint will effect what value is shown, see Figure 13-1 Instruments Calibration Screen.

All instruments are calibrated using a two point linear

calibration process. Any device that has a non-linear re- sponse to environmental stimuli will not be able to be calibrated through the Vission 20/20.

Pressure and Temperature Inputs

The most commonly used instruments are tempera- ture and pressure sensors. The first two pages of the Instrument Calibration screen are dedicated to these instruments.

Each tab on these two pages are divided into two sec- tions, Device Calibration and Channel Calibration. The device calibration section is where the operation param- eters of the instrument is defined. The channel calibra- tion defines the type of signal sent by the instrument.

Default Devices:

•By selecting this option, the operator will have access via a drop-down box of several common devices. The

Figure 13-1. Instruments Calibration Screen

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 Digital I/O Board Layout Top Status Bar TOCCompressor Sequencing Event List Data Backup List of Tables and Figures END of TOC How to Use This Manual Compressor Amperage Load Limiting Operational Flow ChartsRequirements to Start Compressor Critical Compressor Run Logic at Compressor StartOperational Flow Charts 2 Proper Wiring Sizing Installation RecommendationsVoltage Source Grounding DC signalsMixing Voltages Correct Transformer Wiring Method Wiring MethodsBest Practices Overview Hardware ArchitectureDigital Input/Output I/O Board Description Type Digital I/O 1Refer to -2. Analog Inputs Motor Current Analog InputsAnalog Inputs 1 Digital I/O 2Digital & Analog I/O Boards Layout Analog OutputsDigital I/O Board Layout Analog Inputs 2Digital Output Board Layout Digital Output BoardsDigital Input Board Layout Digital Input BoardsDigital Input-Output Board Layout Digital In-Out BoardsAnalog Input Board Layout Analog Input BoardsAnalog Input Jumper Tables Channel SignalJP-13 JP-14 JP-15 JP-31 Analog Output Board Layout Analog Output BoardsMain Screen Main ScreenTop Status Bar Parameter Bar Unit Start Pop-Up Window Bottom Status Bar Splash Screen Navigation Buttons Menu ScreenMenu Screen Pulse Proportional Control Compressor ControlProportional Band & Setpoint Auto-CycleVFD One-Step Control Method Variable Frequency Drive VFDPumpdown Control Pulldown Control Capacity Slide Triggered Outputs Control ModeVolume Slide Position Offset Stop Load and Force UnloadOil Control Load AnticipatingLiquid Injection Compressor Control Alarms and Trips Setpoints Alarms and TripsAlarms and Trips Compressor Inhibits Safety Failure MessagesFalse Start Timer Setpoints TimersOil Separator Level #2 Safety Trip Delay Timers Blank Scheduling Setpoint Compressor SchedulingCompressor Scheduling Pressure Control Setpoints Compressor SequencingCFM Equipment List 10 4 / Blank Condenser Control Setpoint Condenser ControlStep Control Step Control Screen VFD Settings11 4 / Blank Digital Outputs Service OptionsAnalog Outputs Instruments Calibration Pressure and Temperature InputsRemote Capacity Motor CurrentAnalog Inputs 13 4 / Blank Capacity Slide Valve Potentiometer Slide CalibrationSlide Valve Operation Volume Slide Valve PotentiometerSlide Valve Actuator Calibration for Optical Style Motors Photochopper Command Shaft Rotation Required By Actuator Command Shaft RotationSlide Valve Troubleshooting Guide 1 Slide Valve Troubleshooting GuideSlide Valve Troubleshooting Guide 2 LED Blink Codes and Troubleshooting Guide 1 Slide Valve Actuator Troubleshooting Guide Blink CodePleted. The actuator will not move while this error code LED Blink Codes and Troubleshooting Guide 2Chart Operation Trend ChartTrend Data Storage Trend Setup Screen Setup15 4 / Blank Event list Columns Event List16 2 / Blank Input/Output Screen Input / Output17 2 / Blank Digital Inputs Auxiliary Input / OutputDigital Outputs Control 18 4 / Blank Units ConfigurationTime & Date Touchscreen CommunicationsAnti-Recycle Model & Refrigerant Restart On Power FailureCompressor Sequencing LanguageOptional Function Selection Compressor ControlMotor Current Device Condenser ControlOil Pump Oil CoolingDigital Inputs Analog Inputs Analog Outputs Configuration 19 10 / Blank Save / Load Data BackupData Backup Migrate Factory Reset20 4 / Blank Checklist MaintenanceLog ChartApply User AccessManage Accounts LoginScreen Security Levels Security Access Levels22 4 / Blank Help Screen Screen FeaturesVersion Pop-Up Screen Twin Screw Control Screen Twin Screw ControlOperation Cool Compression Control Screen Cool Compression ControlCool Compression Control Functions Screen Control FunctionsOperational Differences from Single Screw Auto Load TimerCool Compression Control

20/20 specifications

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