Service manual

TOC - 1
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0
Table of Contents
Section Title Section Number
Standard Vilter Warranty Statement ......................................................................................................i
Important Message................................................................................................................................ii
How To Use This Manual ......................................................................................................................... TOC-8
Section 1 • Operational Flow Charts
Requirements to Start Compressor ........................................................................................................ 1-1
Critical Compressor Run Logic at Compressor Start ................................................................................1-1
Compressor Amperage Load Limiting ....................................................................................................1-1
High Discharge Pressure Load Limiting ..................................................................................................1-1
Suction Pressure Override Load Limit During Temperature Control ........................................................1-2
Section 2 • Installation Recommendations
Proper Wiring Sizing .............................................................................................................................. 2-1
Voltage Source ......................................................................................................................................2-1
Grounding .............................................................................................................................................2-2
Mixing Voltages .....................................................................................................................................2-2
DC signals ..............................................................................................................................................2-2
Wiring Methods .....................................................................................................................................2-3
Best Practices .........................................................................................................................................2-4
Section 3 • Hardware Architecture
Overview ...............................................................................................................................................3-1
Digital Input/Output (I/O) ......................................................................................................................3-2
Analog Inputs ........................................................................................................................................3-4
Analog Outputs .....................................................................................................................................3-6
Digital & Analog I/O Boards Layout .........................................................................................................3-7
Digital Output Boards ............................................................................................................................3-8
Digital Input Boards ...............................................................................................................................3-9
Digital In-Out Boards .............................................................................................................................3-10
Analog Input Boards ..............................................................................................................................3-11
Analog Input Jumper Tables ...................................................................................................................3-12
Analog Output Boards ...........................................................................................................................3-14
Section 4 • Main Screen
Overview ...............................................................................................................................................4-1
Top Status Bar ........................................................................................................................................4-2
Parameter Bar ........................................................................................................................................4-3
Bottom Status Bar ..................................................................................................................................4-5
Splash Screen .........................................................................................................................................4-6
Section 5 • Menu Screen
Overview ...............................................................................................................................................5-1
Navigation Buttons ................................................................................................................................5-1
Section 6 • Compressor Control
Overview ...............................................................................................................................................6-1
Suction Pressure Control and Process Temperature Control ...................................................................6-1
Auto-Cycle .............................................................................................................................................6-2
Variable Frequency Drive (VFD) ..............................................................................................................6-5
Rapid Cycling VFD Control ......................................................................................................................6-7
Pumpdown Control................................................................................................................................6-8