Service manual

TOC - 1
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
Table of Contents
Section Title Section Number
How To Use This Manual .........................................................................................................................TOC-9
Standard Vilter Warranty Statement ......................................................................................................TOC-10
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
Figure 1-1. Operational Flow Charts .......................................................................................................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
Figure 2-1. Vission 20/20 with Individual Transformer ............................................................................2-1
Figure 2-2. EMI and Vission 20/20 ..........................................................................................................2-1
Grounding .............................................................................................................................................2-2
Mixing Voltages .....................................................................................................................................2-2
DC signals ..............................................................................................................................................2-2
Figure 2-3. Ground Wiring .....................................................................................................................2-2
Figure 2-4. Mixed Voltage Wiring ...........................................................................................................2-2
Wiring Methods ..................................................................................................................................... 2-3
Figure 2-5. Correct Transformer Wiring Method ....................................................................................2-3
Figure 2-6. Incorrect Transformer Wiring Method ..................................................................................2-3
Best Practices .........................................................................................................................................2-4
Section 3 • Hardware Architecture
Overview ...............................................................................................................................................3-1
Figure 3-1. Hardware Architecture Overview .........................................................................................3-1
Digital Input/Output (I/O) ......................................................................................................................3-2
Table 3-1. Digital I/O ..............................................................................................................................3-3
Analog Inputs ........................................................................................................................................3-4
Table 3-2. Analog Inputs......................................................................................................................... 3-5
Analog Outputs .....................................................................................................................................3-6
Digital & Analog I/O Boards Layout .........................................................................................................3-7
Table 3-3. Analog Outputs...................................................................................................................... 3-7
Figure 3-2. Digital I/O Board Layout........................................................................................................3-7
Digital Outpout Boards ..........................................................................................................................3-8
Figure 3-3. Digital Output Board Layout .................................................................................................3-8
Digital Input Boards ...............................................................................................................................3-9
Figure 3-4. Digital Input Board Layout ....................................................................................................3-9
Digital In-Out Boards .............................................................................................................................3-10
Figure 3-5. Digital Input-Output Board Layout ........................................................................................3-10
Analog Input Boards ..............................................................................................................................3-11
Figure 3-6. Analog Input Board Layout ...................................................................................................3-11
Analog Input Jumper Tables ...................................................................................................................3-12
Table 3-4. Analog Input Jumper Tables ...................................................................................................3-12
Analog Output Boards ...........................................................................................................................3-14
Figure 3-7. Analog Output Board Layout ................................................................................................3-14