Emerson 20/20 service manual Operational Flow Charts, Requirements to Start Compressor

Page 11

Section 1 • Operational Flow Charts

Requirements to Start Compressor

Volume and Capacity slides are less than 5%

Oil Separator Temp

 

 

Filter Diff Press <

 

>Oil Sep Start Trip

 

 

Start Filter Diff Trip

 

Setpt

 

 

Setpt

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil Pump On: Prelub Oil Press is > Prelub Oil

Press Reset Setpt for “Min Compressor Prelub Timer” setting (typically 5 seconds)

Start Compressor

Critical Compressor Run Logic at Compressor Start

Start

Compressor

 

Is

 

 

 

 

“Oil Press

 

Run Oil Press>

 

 

 

 

 

 

 

 

 

Bypass at Comp

 

Prelub Oil Press

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

Start” timer

 

Reset setpt?

 

 

 

 

 

 

 

 

expires (60 sec

 

(Default 5 PSI)

 

 

 

 

 

 

 

 

 

after start)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

Run Oil Press Failure

 

 

 

Yes

“Filter Diff

Press Safety

Is Filter Diff

>

Hi Filter Diff Press Run

Changeover” timer expires

Trip Setpt

 

(60 sec after start)

 

for 5 seconds

 

 

 

Is

 

Run Oil Press>

Yes

Run Oil Press

Reset setpt?

 

 

(Default 40 PSI)

 

No

 

Run Oil Press Failure

 

 

 

Oil Separator Temp

 

 

 

Is

 

 

 

 

 

 

 

Safety Changeover

 

 

 

Oil Sep Temp > Lo

 

 

 

 

No

 

 

 

Yes

 

 

Yes

 

Run

 

 

Timer expires (5 min

 

 

Oil Sep Run Reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

after start)

 

 

 

setpt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

No

Run Filter Diff Press Failure

Lo Run Oil Sep Temp Failure

Compressor Amperage Load Limiting

 

Is

 

 

 

 

 

 

 

 

Motor Amps >

 

 

 

 

 

 

 

Capacity Increase

 

 

 

 

Yes

 

 

FLA (ON)

 

 

 

 

 

 

Disabled

 

 

 

 

 

 

 

Setpt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacity Decrease

Motor Amps >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

until Amps < FLA x

FLA (OFF)

 

 

 

 

 

 

 

 

 

 

 

 

 

1.0625

Setpt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal Loading and

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

Unloading

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High Discharge Pressure Load Limiting

 

Is

 

 

 

 

 

 

 

Dsch Press >

 

 

 

 

 

 

Capacity Increase

 

 

 

Yes

 

 

Cutin (ON)

 

 

 

 

 

Disabled

 

 

 

 

 

 

Setpt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacity Decrease until

Dsch Press >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

Dsch Press < ON Setpt x

Cutout (OFF)

 

 

 

 

 

 

 

 

 

 

 

1.0625

Setpt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal Loading and

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

Unloading

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1-1. Operational Flow Charts (1 of 2)

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153

1 – 1

Image 11
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 Voltage Source Installation RecommendationsProper Wiring Sizing Mixing Voltages DC signalsGrounding 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 UnloadLiquid Injection Load AnticipatingOil Control 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 Actuator Calibration for Optical Style Motors Volume Slide Valve PotentiometerSlide Valve Operation 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 Time & Date ConfigurationUnits Anti-Recycle CommunicationsTouchscreen 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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