Emerson Vission 20/20 Operation And Service Manual
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Emerson Vission 20/20 Operation And Service Manual

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Vission 20/20 micro-controller
Operation and service manual • Version 2.0

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Summary of Contents for Emerson Vission 20/20

  • Page 1 Vission 20/20 micro-controller Operation and service manual • Version 2.0...

  • Page 3: Standard Vilter Warranty Statement

    Further, Seller shall not be liable under the above warranties should Buyer be in default of its payment obligations to Seller under this Agreement or any credit agreement. Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 5: Important Message

    Important Message READ CAREFULLY BEFORE OPERATING YOUR COMPRESSOR. The following instructions have been prepared to assist in operation of Vilter Vission 20/20 micro-controllers. The entire manual should be reviewed before attempting to operate. Vilter micro-controllers are thoroughly inspected at the factory. However, damage can occur in shipment.

  • Page 7: Table Of Contents

    Suction Pressure Control and Process Temperature Control ..............6-1 Auto-Cycle ............................. 6-2 Variable Frequency Drive (VFD) ......................6-4 Rapid Cycling VFD Control ........................6-6 Pumpdown Control..........................6-7 TOC - 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 8 Section 13 • Instruments Calibration Overview ............................... 13-1 Pressure and Temperature Inputs ......................13-1 Motor Current ............................13-2 Remote Capacity ........................... 13-4 Analog Inputs ............................13-4 Analog Outputs ............................. 13-5 TOC - 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 9 Oil Pump ..............................19-5 Oil Cooling ............................. 19-5 Motor Current Device ..........................19-6 Digital Inputs ............................19-7 Analog Inputs ............................19-8 Analog Outputs ............................. 19-9 Digital Outputs ............................19-9 TOC - 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 10 Appendix A • Vission 20/20 Troubleshooting Guide Vission 20/20 Troubleshooting Guide ..................... A-1 Appendix B • Vission 20/20 Application Procedures Vission 20/20 Application Procedures ....................B-1 TOC - 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 11 Figure 10-2. Compressor Sequencing Screen - Page 2 ................10-2 Figure 10-3. Compressor Sequencing Screen - Page 3 ................10-3 Figure 10-4. Compressor Setup for Slave Compressor Sequencing ............10-5 TOC - 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 12 Figure 13-6. Instruments Calibration Screen - Analog Outputs (Page 6) ..........13-6 Figure 14-1. Slide Calibration Screen ...................... 14-1 Figure 14-2. Actuator Assembly ......................14-3 Figure 14-3. Menu Screen and Slide Calibration Button (Vission 20/20) ..........14-4 Figure 14-4. Photo-chopper ........................14-5 Figure 15-1. Trend Chart Screen ......................15-1 Figure 15-2.
  • Page 13 Figure 25-2. Compressor Control Screen - Cool Compression Control (Page 4) ........25-2 Figure 26-1. Remote Oil Cooler Screen (Page 1) ..................26-1 Figure 26-2. Remote Oil Cooler VFD Screen (Page 2) ................26-3 END OF TOC TOC - 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 14: How To Use This Manual

    Section 23: Help Screen Section 24: Twin Screw Control Section 25: Cool Compression Control Section 26: Remote Oil Cooler Appendix A: Vission 20/20 Troubleshooting Guide Appendix B: Application Procedures TOC - 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 15: Section 1 • Operational Flow Charts

    Amps < FLA x Cutout (OFF) FLA (OFF) 1.0625 1.0625 Setpt? Setpt? Normal Loading and Normal Loading and Unloading Unloading Figure 1-1. Operational Flow Charts (1 of 2) 1 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 16: Suction Pressure Override Load Limit During Temperature Control

    Suct Press Cap Press > Suction Press Cap Decrease ON setpoint. Dec ON Setpt? Normal Loading and Unloading Figure 1-1. Operational Flow Charts (2 of 2) 1 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 17: Section 2 • Installation Recommendations

    This practice should be avoided if possible, see Figure 2-2. Voltage Source • Transformers block large percentage Figure 2-1. Vission 20/20 with Individual Transformer Figure 2-2. EMI and Vission 20/20 2 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 18: Grounding

    • If your installation site has wire-ways or conduit trays, arate AC from DC, see Figure 2-4. dividers must be installed between the different voltages. Figure 2-3. Ground Wiring Figure 2-4. Mixed Voltage Wiring 2 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 19: Wiring Methods

    • Each Vission 20/20 panel should have its own indi- vidual control transformer, see Figure 2-5 and Figure 2-6. Figure 2-5. Correct Transformer Wiring Method Figure 2-6. Incorrect Transformer Wiring Method 2 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 20: Best Practices

    • Don’t run conduit into the top of an enclosure. • Don’t run refrigerant tubing inside the enclosure. • Don’t drill metal enclosures without taking proper precautions to protect circuit boards from damage. 2 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 21: Section 3 • Hardware Architecture

    • 8-wire touch screen operator interface. • Flexible and expandable I/O. • NEMA-4 enclosure (NEMA-4X optional). • Industrial temperature range design. Figure 3-1. Hardware Architecture Overview 3 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 22: Digital Input/Output (I/O)

    Oil Pump Start Output: the compressor slide valve percentage is less than • When the Vission 20/20 signals the oil pump to start, “slide valve set-point #1”, the output is de-energized. this output is energized. When the Vission 20/20 sig- Slide Valve Setpoint #2 Output (Hot Gas Bypass): nals the oil pump to stop, this output is de-energized.

  • Page 23: Table 3-1. Digital I/O

    Condenser / Remote Oil Cooler Step #3 OUTPUT Condenser / Remote Oil Cooler Step #4 OUTPUT Auxiliary Input #1 INPUT Auxiliary Input #2 INPUT Auxiliary Input #3 INPUT Auxiliary Input #4 INPUT 3 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 24: Analog Inputs

    Operational only when the com- pressor is running. Energizing this input will increase Suction Pressure: the slide valve position. • Default signal is 4-20mA. Suction pressure transducer 3 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 25: Table 3-2. Analog Inputs

    0-5V, 1-5 V, 0-10V, 4-20 mA, RTD, ICTD Auxiliary #10 0-5V, 1-5 V, 0-10V, 4-20 mA, RTD, ICTD Auxiliary #11 0-5V, 1-5 V, 0-10V, 4-20 mA, RTD, ICTD 3 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 26: Analog Outputs

    Danfoss valve. Chiller Inlet Temperature: • Default signal is 4-20mA. Measures separator level. Chiller Inlet Temperature calibration and range are set in the calibration screen. 3 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 27: Digital & Analog I/O Boards Layout

    Instrument Calibration screen. The following illustrations show the Vilter default con- fi gurations for the Vission 20/20. Figure 3-2. Digital I/O Board Layout 3 – 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 28: Digital Outpout Boards

    The addresses are binary and therefore the address of a digital output board will either be address as 1 (0001) or 2 (0010). Figure 3-3. Digital Output Board Layout 3 – 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 29: Digital Input Boards

    The addresses are binary and therefore the Voltage LEDs: address of a digital input board can only be addressed as 3 (0011). Figure 3-4. Digital Input Board Layout 3 – 9 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 30: Digital In-Out Boards

    120Vac output is being produced or a 120Vac signal of a digital output board will either be address as 4 is detected. (0100) or 5 (0101). Figure 3-5. Digital Input-Output Board Layout 3 – 10 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 31: Analog Input Boards

    6 Analog Input Jumper Tables. (0110), 7 (0111), 8 (1000) or 9 (1001). Figure 3-6. Analog Input Board Layout 3 – 11 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 32: Analog Input Jumper Tables

    1-5 VOLT 0-10 VOLT 4-20 mA ICTD CHANNEL 4 SIGNAL JP-10 JP-11 JP-12 JP-30 Analog Input 4 0-5 VOLT 1-5 VOLT 0-10 VOLT 4-20 mA ICTD 3 – 12 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 33 4-20 mA ICTD ACTUATOR POTENTIOMETER CHANNEL 8 SIGNAL JP-22 JP-23 JP-24 JP-34 JP-26 Analog Input 8 0-5 VOLT 1-5 VOLT 0-10 VOLT 4-20 mA ICTD ACTUATOR POTENTIOMETER 3 – 13 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 34: Analog Output Boards

    10 indicate the correct voltage of both the 5Vdc and (1010). 24Vdc power sources. Figure 3-7. Analog Output Board Layout 3 – 14 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 35: Section 4 • Main Screen Overview

    All navigation to any other screens will be sections. Three of the sections are static; Top Status Bar, performed through the Main Screen. Figure 4-1. Main Screen 4 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 36: Top Status Bar

    Compressor trips are designed to protect the equipment and any personnel operating the equipment. Figure 4-2. Top Status Bar 4 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 37: Parameter Bar

    If available, the buttons work to increase and decrease the volume slide position in the same manner as the capacity slide. Figure 4-3. Parameter Bar Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0 4 – 3...

  • Page 38: Figure 4-4. Unit Start Pop-Up Window

    Screen. In the case that the Run mode is in re- mote capacity control, this box will show the desired capacity position. • The suction box shows the current suction Figure 4-4. Unit Start Pop-Up Window 4 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 39: Bottom Status Bar

    (if any are logged in), the date and time, and the total run hours of the compressor. Figure 4-5. Bottom Status Bar 4 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 40: Splash Screen

    • Displays the position of the capacity slide from 0% to Menu Button: 100%. • When pressed, navigates the operator to the menu screen. Figure 4-6. Splash Screen 4 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 41: Section 5 • Menu Screen Overview

    • Navigates to the timer screen where the operator can outputs for maintenance and diagnostics purposes. set the various time related parameters. Figure 5-1. Menu Screen 5 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 42: Figure 5-2. Menu Screen With Remote Oil Cooler Enabled

    Figure 5-2. the time of the last compressor fault event. Figure 5-2. Menu Screen with Remote Oil Cooler Enabled 5 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 43: Section 6 • Compressor Control

    This means that the pulse time can be 100% of Figure 6-1. Compressor Control Screen - Suction Pressure Control 6 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 44: Auto-Cycle

    Direct I/O “Remote Auto” mode. If the operator wishes the compressor to operate closer, the Figure 6-2. Compressor Control Screen - Process Temperature Control 6 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 45: Figure 6-3. Proportional Band & Setpoint

    Auto-cycle set-points. Start Pressure: • When the suction pressure meets or exceeds this set- point, the compressor will start. Figure 6-3. Proportional Band & Setpoint 6 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 46: Variable Frequency Drive (Vfd)

    The two-step control method works much like the This check box is not deselectable by the operator. Figure 6-4. Compressor Control Screen - VFD Settings Control 6 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 47: Figure 6-5. Vfd One-Step Control Method

    This setpoint should be set to the lowest value that Figure 6-5. VFD One-Step Control Method Figure 6-6. VFD Two-Step Control Method 6 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 48: Rapid Cycling Vfd Control

    Digital Output is turned ON when Compressor is Running, Warm up Timer is Lapsed and Compressor VFD RPM goes below this setpoint. Figure 6-7. Compressor Control Screen - Rapid Cycling VFD Control 6 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 49: Pumpdown Control

    Suction Pressure Auto-cycle damage by limiting the rate at which to build is cooled. 6 – 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 50: Figure 6-8. Compressor Control Screen - Pumpdown/Pulldown Control

    • This checkbox enables the Pulldown feature. If this starts at (85 – 5 = 80) psig box is unchecked, Pulldown setpoints are ignored Figure 6-8. Compressor Control Screen - Pumpdown/Pulldown Control 6 – 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 51 Pulldown feature. This is done to keep Pulldown & Pumpdown features mutually exclusive. 6 – 9 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 52: Control Mode

    & force unload algorithm recognizes a potential trip and either stops the compressor from loading up or even Figure 6-9. Compressor Control Screen - Misc. 1 (Control Mode) 6 – 10 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 53: Capacity Slide Triggered Outputs

    • Indicates the capacity slide position where the digital output is triggered. Figure 6-10. Compressor Control Screen - Misc. 2 (Economizer & Hot Gas Bypass Control) 6 – 11 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 54: Volume Slide Position Offset

    Liquid Injection Control using a 4-20ma motorized valve: • Allows the operator to choose if the load anticipation • When a motorized valve is used to control the amount 6 – 12 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 55: Figure 6-11. Compressor Control Screen - Oil Control & Liquid Injection Control

    Liquid inj. Setpoint 1. This feature nearly Figure 6-11. Compressor Control Screen - Oil Control & Liquid Injection Control 6 – 13 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 56 • When enabled, averages the Oil manifold tempera- ture and the discharge temperature. This creates a more stable control variable and should result in more stable control. 6 – 14 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 57: Section 7 • Alarms And Trips Overview

    The Alarms and Trips screen allows the operator to view The Vission 20/20 uses Warnings as a way to notify the and adjust settings for compressor safety and alarm set- operator of parameters that may inhibit the compressor tings.

  • Page 58: Figure 7-2. Alarms And Trips Screen - Page 1 As Level 2 User

    Low Oil Separator Run Temperature (Alarm & Trip): • This is the running low oil separator temperature Figure 7-2. Alarms and Trips Screen - Page 1 as Level 2 User 7 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 59: Figure 7-2. Alarms And Trips Screen - Page 2

    This safety is active when superheat heat monitor is enabled in the confi guration screen. Figure 7-2. Alarms and Trips Screen - Page 2 7 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 60: Figure 7-2. Alarms And Trips Screen - Page 3

    Figure 7-2. Alarms and Trips Screen - Page 3 7 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 61: Compressor Inhibits

    All inhibits will be logged in the event list. will also appear when the Running Oil Pressure falls below the Low Oil Pressure trip setpoint after the Low 7 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 62: Compressor Warnings

    Oil Separator Safety Trip Delay” timer. Digital Aux in 1-16 Warning • This message will appear when the Digital Aux in 1-8 is Active High / Low. 7 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 63: Section 8 • Timers Overview

    • This is the length of time the oil pump will run, after establishing Pre-lube Oil Pressure, to prime the oil cir- cuit before starting the compressor. Figure 8-1. Timers Screen - Page 1 8 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 64 fl oat switch (the oil level switch is standard on the Accumulative Anti-Recycle Timer. Unlike the on all liquid injection units and optional on all others). True Anti-Recycle Timer, if the compressor has run 8 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 65: Figure 8-2. Timers Screen - Page 2

    • Once the Vission 20/20 has sent a command to the compressor starter to start, a return signal is expect- Low Suction Pressure Safety Bypass: ed.
  • Page 66 8 – 4 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 67: Section 9 • Compressor Scheduling

    “Unscheduled” if operator does not want to use all not in order, invalid events are marked with caution 4 events per day. Figure 9-1. Compressor Scheduling Screen 9 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 68 9 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 69: Section 10 • Compressor Sequencing

    Temperature Control drops below Unload Rate 1 Load Rate 2 offset (outer): • Defi nes the outer pressure/temperature setpoint Figure 10-1. Compressor Sequencing Screen - Page 1 10 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 70: Capacity Load/Unload Timers

    Unload Rate 1 offset and goes below Unload Rate 2 to be used. setpoint offset then Unload Rate 2 timer is used to make periodic sequencing decisions. Figure 10-2. Compressor Sequencing Screen - Page 2 10 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 71: Compressor Sequencing Table

    Compressors can be included/excluded by toggling ON/OFF. Figure 10-3. Compressor Sequencing Screen - Page 3 10 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 72: Table 10-1. Status Symbols

    Slave Compressor running at maximum capacity without any error. Slave Compressor under active control of Master Compressor Slave Compressor running into its stop timer, will be stopped. 10 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 73: Configuration Overview

    Set the Communications Active Remote Control to “ETHERNET” for each compressor (slaves and master). 10. Apply these settings before exiting Confi guration screen. Figure 10-4. Compressor Setup for Slave Compressor Sequencing 10 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 74: Figure 10-5. Placing Slave Compressors In Remote Mode

    11. Exit out of the confi guration screen and then put slave in remote mode by pressing Unit Start->Remote. Figure 10-5. Placing Slave Compressors in Remote Mode 10 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 75: Compressor Setup For Master Compressor Sequencing

    Setup a unique Ethernet IP address for the master. Select a unique name for the master compressor. Setup the subnet mask for the IP address. Figure 10-6. Compressor Setup for Master Compressor Sequencing 10 – 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 76 10 – 8 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 77: Section 11 • Condenser Control

    Figure 11-1. Condenser Control Screen - Page 1 11 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 78: Step Control

    Run mode is Auto and as “ON” timer while loading and acts as “OFF” timer Summer/Winter Auto Switch is enabled. while unloading for the same step. 11 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 79: Vfd Settings

    Maximum Speed: • This setpoint defi nes the maximum speed in percent- age for Condenser VFD Fan at which it should run 11 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 80: Figure 11-2. Condenser Control Screen - Page 2

    Section 11 • Condenser Control Figure 11-2. Condenser Control Screen - Page 2 11 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 81: Section 12 • Service Options

    Output screens, see Figures 12-1, 12-2, 12-3 and 12-4. terminal 14 and is the 4th LED down on card 1. Figure 12-1. Service Options Screen - Digital Outputs (Page 1) 12 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 82: Figure 12-2. Service Options Screen - Digital Outputs (Page 2)

    The output is connected to terminal 24 and is the 4th LED down on card 2. Figure 12-2. Service Options Screen - Digital Outputs (Page 2) 12 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 83: Figure 12-3. Service Options Screen - Digital Outputs (Page 3)

    The output is connected to terminal 28 and is the 8th LED on card 2. Figure 12-3. Service Options Screen - Digital Outputs (Page 3) 12 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 84: Figure 12-4. Service Options Screen - Digital Outputs For Remote Oil Cooler (Page 3)

    44 and is the 4th LED down on card 4. Figure 12-4. Service Options Screen - Digital Outputs for Remote Oil Cooler (Page 3) 12 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 85: Analog Outputs

    Remote Oil Cooler VFD. The output is connected to AO #2 on card 10. % Slide Valve Position Figure 12-5. Service Options Screen - Analog Outputs (Page 4) 12 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 86 12 – 6 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 87: Section 13 • Instruments Calibration

    Vission 20/20. The Instrument Calibration screen allows the operator Pressure and Temperature Inputs to defi ne how the Vission 20/20 will interpret the signal from any devices attached to the panel’s analog inputs. The most commonly used instruments are tempera- The instrument calibration screen is organized up to six ture and pressure sensors.

  • Page 88: Motor Current

    After entering the measured Figure 13-2. Instruments Calibration Screen - Analog Inputs (Page 2) 13 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 89: Figure 13-3. Instruments Calibration Screen - Analog Inputs (Page 3)

    “Enter Desired Value” setpoint. • Not editable by the operator. Displays the Figure 13-3. Instruments Calibration Screen - Analog Inputs (Page 3) 13 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 90: Remote Capacity

    Unit drop-down box then “total offset” entry box. set the maximum and minimum value for the scale. Figure 13-4. Instruments Calibration Screen - Analog Inputs (Page 4) 13 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 91: Analog Outputs

    So this screen offers the operator the ability to fi ne tune error. The operator can use the “+” & “-” buttons to the upper and lower output values, see Figure 13-6. adjust the output. 13 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 92: Figure 13-6. Instruments Calibration Screen - Analog Outputs (Page 6)

    The offset is applied to the mA value which should correct the error. Resolution of error should not be less than 0.01. Figure 13-6. Instruments Calibration Screen - Analog Outputs (Page 6) 13 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 93: Section 14 • Slide Calibration

    • The Vission 20/20 uses the “Min Limit” and plied to the other capacity position displays. In addition, “Max Limit” setpoint to defi ne an area within the Figure 14-1. Slide Calibration Screen 14 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 94: Volume Slide Valve Potentiometer

    Therefore It is possible to read a value greater than 100% or less than 0% if inertial carries the slides after these limits are reached. 14 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 95: Calibrate Slide Valve Actuators

    0 volts AFTER the ACTUATOR calibration proce- dure is completed. View Rotate 180° Actuator Assembly Actuator Plastic Cover Red LED Blue Calibrate Button Figure 14-2. Actuator Assembly 14 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 96: Figure 14-3. Menu Screen And Slide Calibration Button (Vission 20/20)

    Section 14 • Slide Calibration Figure 14-3. Menu Screen and Slide Calibration Button (Vission 20/20) 14 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 97: Figure 14-4. Photo-Chopper

    Section 14 • Slide Calibration 8. Use the “+” button on the Vission 20/20 to drive the capacity slide to its maximum mechanical stop position. This will be apparent by a slowing of the motor rotation and a winding sound from the actuator motor. When you hear the motor wind-up, release the “+”...

  • Page 98: Command Shaft Rotation

    0.45 1.767” VSM 401 0.80 3.141” 0.45 1.767” VSM 501 0.91 3.568” 0.52 2.045” VSM 601 0.91 3.568” 0.52 2.045” VSM 701 0.91 3.568” 0.52 2.045” 14 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 99: Slide Valve Troubleshooting Guide

    Slide Valve Troubleshooting Guide The Analog output card of the Vission 20/20 produces a 4–20mA signal to any attached devices. However, it is not uncommon that small differences in the board components might result in small differences in the output. So this screen offers the operator the ability to fi...
  • Page 100 Stripped gears inside the gear rotor, The motor runs but output shaft will or the armature has come unpressed Replace the actuator. not turn. from the armature shaft. 14 – 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 101: Slide Valve Actuator Troubleshooting Guide Blink Code

    Note 1: TP1 and TP2 are plated-thru holes located close to the slotted optocouplers on the board. They are clearly marked on the board silkscreen legend. 14 – 9 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 102 Note 2: The TS1 wire pads are where the motor thermal switch leads solder into the circuit board. They are clearly marked on the board silkscreen legend and are oriented at a 45° angle. 14 – 10 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 103: Section 15 • Trend Chart

    Zoom In/Out: • These buttons allow the operator to adjust the num- ber of data points plotted on the screen. At maximum Figure 15-1. Trend Chart Screen 15 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 104: Trend Data Storage

    Setup: • This button allows operator to open the Trend Setup screen. This button is inactive when the trend feature is running. 15 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 105: Setup

    If the operator changes Press/Temp units from the con- fi guration screen when running the trending feature, then the background trending will stop. Figure 15-2. Trend Setup Screen 15 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...
  • Page 106 15 – 4 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 107: Section 16 • Event List

    • Displays the informational string that describes the event. Event list Columns Date: • Displays the date of the event in MM-DD-YYYY format. Figure 16-1. Event List Screen 16 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 108 16 – 2 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 109: Section 17 • Input / Output

    fi ve Freeze events occur. These Freeze events can be downloaded to a USB drive though the Data Backup screen, see Section 20. Figure 17-1. Input/Output Screen - Page 1 17 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 110: Figure 17-2. Input/Output Screen - Page 2

    Section 17 • Input / Output Figure 17-2. Input/Output Screen - Page 2 Figure 17-3. Input/Output Screen - Page 3 17 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 111: Figure 17-4. Input/Output Screen - Page 4

    Section 17 • Input / Output Figure 17-4. Input/Output Screen - Page 4 Figure 17-5. Input/Output Screen - Page 4 (Remote Oil Cooler Enabled) 17 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 112: Figure 17-6. Input/Output Screen - Freeze Data Page

    Section 17 • Input / Output Figure 17-6. Input/Output Screen - Freeze Data Page 17 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 113: Section 18 • Auxiliary Input / Output

    In order to en- trip functions of the Vission 20/20 for the desired able the auxiliary I/O, the Vission 20/20 must fi rst be digital input. The accompanying drop-down box equipped with one of the available expandable I/O cards gives the operator the fl...

  • Page 114: Digital Outputs

    101, the output will be triggered. If when exceeded will generate a trip. the value decreases to 99, then the output will be toggled in the opposite direction. Digital Relay: 18 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 115: Figure 18-2. Auxiliary I/O Screen - Digital Outputs (Page 2)

    Section 18 • Auxiliary Input / Output Figure 18-2. Auxiliary I/O Screen - Digital Outputs (Page 2) Figure 18-3. Auxiliary I/O Screen - Analog Inputs (Page 3) 18 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 116: Analog Outputs

    Increasing the proportional setting increases the control system’s sensitivity to small process fl uctuations and the 18 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 117: Figure 18-4. Auxiliary I/O Screen - Analog Inputs (Page 4)

    Section 18 • Auxiliary Input / Output Figure 18-4. Auxiliary I/O Screen - Analog Inputs (Page 4) Figure 18-5. Auxiliary I/O Screen - Analog Inputs (Page 5) 18 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 118: Figure 18-6. Auxiliary I/O Screen - Analog Outputs (Page 6)

    Section 18 • Auxiliary Input / Output Figure 18-6. Auxiliary I/O Screen - Analog Outputs (Page 6) Figure 18-7. Auxiliary I/O Screen - Analog Outputs (Page 7) 18 – 6 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 119: Section 19 • Configuration

    • Drop-down box to select the temperature units from Fahrenheit and Celsius. Once selected, all screen temperatures will be displayed in the chosen units. Figure 19-1. Confi guration Screen - Initial Setup (Page 1) 19 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 120: Time & Date

    • Enables the Serial Modbus RTU protocol. Once se- lected, the remainder of the serial setpoints will be This section sets the time and date of the Vission 20/20. available for editing. Accurate time and date are accentual for accurate log- ging and troubleshooting.

  • Page 121: Anti-Recycle

    Restart On Power Failure • Identifi es the panel as the master while in sequencing control. This feature of the Vission 20/20 offers the ability to de- Slave: fi ne how the Vission 20/20 will handle a power failure. • Identifi es the panel as a slave while in sequencing This can also be useful to allow system controller to re- control.

  • Page 122: Compressor Control

    R507. Suction superheat monitor and Discharge su- perheat monitor features are mutually exclusive. Figure 19-2. Confi guration Screen - Compressor Sequencing (Page 2) 19 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 123: Vilter Only Settings

    Full Time: • Enables option for full time oil pump. Oil pump will always be running while the compressor is running. 19 – 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 124: Motor Current Device

    Section 19 • Configuration Motor Current Device The Vission 20/20 can read the motor current in a couple of different ways. The following selections defi nes the method, see Figure 19-2. Current Transformer: • This defi nes the input used for motor current when a current transformer is used.

  • Page 125: Digital Inputs

    • Enables the selected digital input. Set Name: • Allows the operator to assign a name to the input. Figure 19-3. Confi guration Screen - Digital Auxiliaries (Page 3) 19 – 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 126: Analog Inputs

    • Enables the selected analog input. Set Name: • Allows the operator to assign a name to the input. Figure 19-4. Confi guration Screen - Analog Auxiliaries (Page 4) 19 – 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 127: Analog Outputs

    • Allows the operator to assign a name to the output. • Allows the operator to assign a name to the output Figure 19-5. Confi guration Screen - Analog and Digital Outputs (Page 5) 19 – 9 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9...

  • Page 128: I/O Configuration

    I/O Confi guration Digital Input/Output 1: • Enables the optional digital input/output card 1. If any additional I/O card are added to Vission 20/20, this Digital Input/Output 2: is where these cards are enabled for use by the Vission • Enables the optional digital input/output card 2.

  • Page 129: Section 20 • Data Backup

    fl ash drive. That information can then be uploaded back Save / Load section is where the operator can either save to the Vission 20/20 in the case of data corruption or to the Vission 20/20 setpoints and log information to a update the Vission program.
  • Page 130 Section 20 • Data Backup Load: • Selecting load allows the operator to load data from a USB fl ash drive to the Vission 20/20 using the in- formation provided further down the screen. The bottom button will be labeled “Load” when this is selected.

  • Page 131: Migrate

    So this function was designed operator should have to use the following migrate but- to help the operator to regain control, see Figure 20-2. ton is if a new Vission 20/20 program is loaded over an existing Flash card, see Figure 20-2. Reset: •...

  • Page 132: Setpoints Report

    fi les. tion. During the course of operation, operator can gen- erate reports any time, see Figure 20-3. Figure 20-3. Data Backup Screen - Setpoints Report 20 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 133: Section 21 • Maintenance

    “Update” button at the bottom of the page will perform the sign-off operation and list the maintenance per- formed in the maintenance log. Figure 21-1. Maintenance Screen - Checklist 21 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 134: Notes

    • Lists the date the maintenance task was performed. vided with the compressor, see Figure 21-3. Time: • Lists the time the maintenance task was performed. Figure 21-2. Maintenance Screen - Log 21 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 135: Figure 21-3. Maintenance Screen - Chart

    Section 21 • Maintenance Figure 21-3. Maintenance Screen - Chart 21 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 136 21 – 4 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 137: Section 22 • User Access

    The user access screen is where all operators go to log Therefore, this access is restricted to those only with in. In the Vission 20/20, each screen has a security level, the highest level of competence. whereby allowing operators, technicians and/or supervi- The user access screen is also where new operators are sors the ability to modify different sets of setpoints.

  • Page 138: Login

    Name” entry box. touching the entry box and entering the name via the pop-up keyboard. Figure 22-2. User Access Screen - Manage Accounts 22 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 139: Figure 22-3. User Access Screen - Vnc Accounts

    Verifying the password can be entered by touching the “Verify Password” entry box and entering the password via the pop-up keyboard. Figure 22-3. User Access Screen - VNC Accounts 22 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 140: Vnc Account

    Level 2* Level 3 required for pages 3 - 6 Slide Calibration Level 2 Timers Level 2* Level 3 required for constraints VNC Account Level 3 22 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 141: Section 23 • Help Screen

    20/20 from a USB drive, see Figure 23-2. If there are any PDF type documents on a connected USB drive, the names will be listed in this section. The operator Figure 23-1. Help Screen - Manual 23 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 142: Figure 23-2. Help Screen - Usb

    • Enter the page number the operator wishes to be dis- 23-3. played in the display window. Figure 23-2. Help Screen - USB Figure 23-3. Version Pop-Up Screen 23 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 143: Section 24 • Twin Screw Control

    • Prelube oil pump alarms and trip values will be changed to default values for the twin screw • To setup the Vission 20/20 panel for twin screw, navi- gate to the Confi guration Screen, page 2, and select • Run oil pump alarm and trip values will be “VRS”...

  • Page 144: Operation

    The “% cap” display shows the actual value in percent of the Figure 24-2. Slide Calibration - Twin Screw Control 24 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 145: Figure 24-3. Slide Calibration - Twin Screw Bump Pop-Up Window

    100% or less than 0% if inertial carries the slides after these limits are reached. Figure 24-3. Slide Calibration - Twin Screw Bump Pop-Up Window 24 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 146 24 – 4 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 147: Section 25 • Cool Compression Control

    Oil Cooling sections and “Cool Compression” gets oil and liquid ammonia mixture through the suction oil selected automatically. It will also enable Superheat Figure 25-1. Cool Compression Control Screen 25 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 148: Control Functions

    Auto Load operation will be engaged. After the timer expires, Auto Load will be disengaged. • Danfoss Positioning Valve Settings Figure 25-2. Compressor Control Screen - Cool Compression Control (Page 4) 25 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 149 8°F or the capacity has reached the SOI • On Timers screen Oil Level #1 Safety Trip Delay, Oil Load Limit setting. Level #2 Safety Trip Delay settings are disabled. 25 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 150: Operational Differences From Single Screw

    Pressure Ratio and Superheat temperature changes. Supplemental Oil Cooling Solenoids • Some cool compression units will have supplemental oil cooling solenoids. One is called the suction liquid 25 – 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 151: Section 26 • Remote Oil Cooler

    Remote Oil Cooler Temperature the compressor is off. pressure that matches the setpoint. Figure 26-1. Remote Oil Cooler Screen (Page 1) 26 – 1 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 152: Step Control

    Similarly in a VFD step, a step can only be negatively. removed once VFD has reached its minimum speed 26 – 2 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 153: Figure 26-2. Remote Oil Cooler Vfd Screen (Page 2)

    20mA in its normal range of reaches 4mA in its normal range of 4-20 mA. 4-20mA. Figure 26-2. Remote Oil Cooler VFD Screen (Page 2) 26 – 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 154 26 – 4 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 155: Appendix A • Vission 20/20 Troubleshooting Guide

    Appendix A • Vission 20/20 Troubleshooting Guide Vission 20/20 Troubleshooting Guide In the event of a problem with the Vilter Vission 20/20, the help screen, along with your electrical drawings will help determine the cause. NOTICE Before applying power to the Vission 20/20 control panel, all wiring to the panel should be per the National Electrical Code (NEC).
  • Page 156 A - 2 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 157 Flashcard Replacement Procedure ......................B-21 Danfoss Liquid Injection Valve Setup ...................... B-23 User Access Menu ..........................B-25 Remote Control and Monitoring of Vission 20/20 Control Panel ............. B-27 Phoenix Contact PSM-ME-RS485/RS485-P Isolator .................B-49 Vessel Level Control Setup for Vission 20/20 Control Panel ..............B-51 VPLUS (AC Motor) Setup Procedure for Vission 20/20 Panel ..............
  • Page 158 B - 2 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 159: Vission 20/20 Application Procedures

    • Selection to initiate the Pulldown process at the next compressor start. • Step pressure defi nes the “steps” (in psig) in which the suction pressure setpoint is decremented. B - 3 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 160 After the 12th step (running at 25 psig), 240 hours will have elapsed, and the new setpoint changes to 20 psig. After the Pulldown setpoint equals or is less than the control setpoint, the Pulldown feature disables itself. B - 4 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 161 After 20 hours of running at 70 psig, the next set of Pulldown setpoints are calculated. This is repeated until the target setpoint (Stop Pressure setpoint) is reached. The Pulldown operation is then disabled and the compressor will con- tinue to operate at this setpoint. B - 5 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 162 B - 6 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 163: Vission 20/20 Compressor Control Setpoints Setup

    The confi guration screen must fi rst be setup to enable two setpoints, see Figure B-2. Figure B-2. Confi guration Screen (Page 2) - Two Setpoint Operation Setup B - 7 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 164 Appendix B • Vission 20/20 Application Procedures Figure B-3. Compressor Control Setpoint 1 and Setpoint 2 Setup B - 8 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 165 Figure B-4. Compressor Control Load Limit Setpoint 1 and Setpoint 2 Setup B - 9 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 166 1 AND SETPOINT 2 SELECTION Refer to Table B-4, for register information for setting the active setpoint. Figure B-5. Alarm and Trip Safety Setpoints for Setpoint 1 and Setpoint 2 B - 10 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 167: Vission 20/20 Compressor Sequencing Setup

    Figure B-6. Master Compressor Loading, Unloading and Auto-cycle Setpoints Setup B - 11 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 168 Master panel, and the slave com- cycle setpoints would become active. pressors would then revert to “Local” control. Figure B-7. Setup of Master Compressor for Slave Compressor(s) Loading and Unloading B - 12 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 169 If suction pres- ing to unload rate 1 timer. sure / process temperature surpasses the control Figure B-8. Slave Compressor(s) Loading and Unloading Setup B - 13 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 170 Equipment which compressors will be turned on and off during • Options of this combo box are updated sequence cycle. The lower the priority number, the B - 14 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 171 1 offset for the time period of the unload rate 1 timer, then the master will adjust B - 15 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 172 Slave Compressor running at maximum capacity without any error Slave Compressor under active control of Master Compressor Slave Compressor running into its stop timer, will be stopped B - 16 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 173 Now the available CFM = (408 * (90 - 70) / 100) = 81.6 CFM and since the required CFM to absorb slave 3 load is = 48.3, there is now enough available and slave 3 will be shutdown. B - 17 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 174 “Remote Comm Timeout” – an indication that the slave has lost communication to the master compressor. This takes approximately B - 18 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 175: Database Backup Procedure

    With the original fl ashcard installed into the 20/20 fi gured properly for the correct single board computer SBC, insert the fl ashdrive into the USB port. This B - 19 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 176 – that value will be restored as a “positive PSIG” set- point. That is a known bug of the “Restore” function. So, for instance, say you have the Suction Pressure B - 20 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 177: Flashcard Replacement Procedure

    10. Instrument Calibration - Misc page a. Record current transformer ratio 11. Maintenance Notes –all B - 21 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 178 Appendix B • Vission 20/20 Application Procedures Figure B-9. Flashcard Replacement B - 22 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 179: Danfoss Liquid Injection Valve Setup

    The Danfoss Liquid Injection valve is selected from the Confi guration Screen - Page 2 (Under Oil Cooling Section.) The settings for the Danfoss Liquid Injection are setup in the Compressor Control Menu - Page 4. B - 23 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 180 B - 24 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 181: User Access Menu

    Compressor scheduling level 2 Timer Setpoints (page 1) level 2 Setpoints (page 2) level 2 Constraints level 3 Alarms trips Setpoints level 2 Constraints level 3 Delay level 3 B - 25 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 182 1 Data Backup To save data level 1 To upload date level 3 Start compressor level 0 Stop compressor level 0 Volume slide move level 3 B - 26 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 183 Use one of the extra wires, rather than the shield, for the common. Four-Pair • Belden P/N 8104 (with overall shield) • Belden P/N 9728 (individually shielded) • Belden P/N 8164 (individually shielded with overall shield) B - 27 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 184 They also offer increased speed. The third reason is that computer manufacturers are steering serial network us- ers to move towards using the USB ports for serial communications. B - 28 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 185 Appendix B • Vission 20/20 Application Procedures Figure B-13. Vission 20/20 Single Board Computer with USB to RS422/RS485 Convertor (VPN3485C) on USB port P18 The above photo shows a typical connection for using one of the USB ports (in this case P18) for Modbus RTU serial communications.
  • Page 186 Figure B-14. Selecting USB Port for Serial Communication The Vission 20/20 panel allows designating the USB port to be used for serial Modbus RTU communication from the Confi guration screen. A USB device must be plugged into one of the USB ports in order for the “Serial USB”...
  • Page 187 20/20 panels – VPN 3485MS. Figure B-15. 2-Wire Multidrop Network Using Terminating Resistors Figure B-16. Wiring Diagram – VPN3485MS Device as RS422 to RS485 Convertor/Isolator B - 31 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 188 Dip switches on each side of the device must be confi gured for the baud rate of the network. Figure B-17. Wiring Diagram – VPN3485MS Device as Network Isolator/Repeater Table B-2. Baud Rate Selection B - 32 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 189 Appendix B • Vission 20/20 Application Procedures Table B-3. RS422/485 Switch Settings Figure B-18. VPN3485MS DIN Rail Mounted B - 33 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 190 Figure B-19. Ethernet Network Topology B - 34 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 191 Setup and support of these networks are beyond the ability of Vilter. Figure B-20. Network Confi guration for Access via Internet – Example 1 B - 35 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 192 20/20 panel has an assigned router port. to the internet, running a VNC client program which Figure B-22. Network Confi guration for Access via Internet – Example 3 B - 36 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 193 Vission 20/20 panels would be setup for Modbus TCP protocol. When the connection is made, Figure B-23. Network Confi guration for Access via Internet – Example 4 B - 37 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 194 So when a device communicates to the Figure B-24. Typical Block Diagram of a Multi-Compressor Control Scheme (1 of 4) B - 38 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 195 Appendix B • Vission 20/20 Application Procedures Figure B-24. Typical Block Diagram of a Multi-Compressor Control Scheme (2 of 4) B - 39 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 196 Appendix B • Vission 20/20 Application Procedures Figure B-24. Typical Block Diagram of a Multi-Compressor Control Scheme (3 of 4) B - 40 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 197 Figure B-24. Typical Block Diagram of a Multi-Compressor Control Scheme (4 of 4) The actual control scheme that you use will depend upon the response of the process that you are trying to control. B - 41 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 198 (ON or OFF). This determines when is “node” number for Modbus RTU.) communication “writes” for Compressor Command Figure B-25. Confi guration screen - Page 1 B - 42 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 199 20/20 panel. VIA COMMUNICAITONS Always Register Setup and Control Scenario Never • The Vission 20/20 panel fi rst needs to be placed in Timed REMOTE mode before Compressor Control com- Remote Lock Off mands (Registers 40500 through 40513) can be sent.
  • Page 200 The capacity slide actuators can only turn so fast. The proportional change to the compressor capacity occurs at a fi xed rate. Caphold and Operation with VFD B - 44 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 201 If the new target is < 0.4% (full scale) away from the current position – then don’t do anything – this is the deadband region. If new target is > deadband region but < 10% (full B - 45 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 202 • If compressor was running prior to power failure, consider. it will begin an Auto-restart sequence as soon as power is restored. • In both cases, the Remote Lock will be ON after B - 46 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 203 Ethernet communication port (via Ethernet I/P or Modbus TCP/IP) or the serial port (via RS485 Modbus RTU). For communication register information, refer to Table B4. B - 47 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 204 B - 48 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...

  • Page 205: Phoenix Contact Psm-Me-Rs485/Rs485-P Isolator

    TERMINATION RESISTORS FOR A&B ARE ON. TEK 2014 SELECT BAUD RATE SWITCHES TO MATCH NETWORK SPEED PROBE 1 PROBE 2 Figure B-26. Phoenix Contact PSM-ME Isolator Test B - 49 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 206 Phoenix Contact PSM-ME isolator installed isolator installed in the network. in the network. The following screen capture from the Figure B-28. Network Noise with Phoenix Contact PSM-ME Isolator B - 50 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 207 4-20ma signal from the level probe. are boards 6 to10. Figure B-29. Selection of Installed Boards from Confi guration Screen (Confi guration Screen – Page 6) B - 51 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 208 Figure B-30. Enabling and Naming Analog Outputs (Confi guration Screen – Page 5) B - 52 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 209 “Chiller Level 4,20 Input” and Auxiliary Continue to step 4. Figure B-31. Enabling and Naming Analog Inputs (Confi guration Screen – Page 4) B - 53 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 210 The units of this signal are in “percent”. b. 4 ma signal corresponds to 0% level. 20 ma signal corresponds to a 100% level. Figure B-32. Scaling Setup for Auxiliary Analog Inputs B - 54 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 211 Low Alarm setpoint or above the Hi Alarm • Continue to step 6. Figure B-33. Auxiliary I/O Alarm and Trip Setup B - 55 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 212 ) is controlled by the Auxiliary Input valve will be adjusted in response to the “error” from the “Chiller Level 4,20 input” - which was confi gured in Steps desired setpoint. B - 56 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 213 50%, the positioning valve will be fully closed. As it rises above 50%, then the position- ing valve will begin to open. B - 57 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 214 Appendix B • Vission 20/20 Application Procedures Figure B-35. Proportional Level Control (Auxiliary I/O – Page 6) B - 58 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 215 SCOPE the compressor to provide oil cooling. Vilter AC VPLUS oil cooling system utilizes a PID algo- rithm in the Vission 20/20 panel to control the speed of HARDWARE WIRING the VPLUS motor. The motor speed controls the amount The analog output card needs to be wired to the VPLUS of liquid refrigerant being injected into the compressor pump VFD, see Figure B-36.
  • Page 216 Figure B-37. Digital Output Card Wiring to VPLUS Liquid Injection Solenoid The liquid injection solenoid needs to be wired to Digital Output board #2, output location #5. B - 60 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 217 Log on and navigate to the Confi guration screen, page number 6. Insure that all boards that are physically Figure B-38. Selection of Installed Analog Output Board (Confi guration Screen – Page 6) B - 61 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 218 Navigate to page 2 of the Confi guration screen. In the middle column, towards Continue to step 3. Figure B-39. VPLUS Oil Cooling Selection B - 62 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 219 4-20ma signal to the VFD for the VPLUS motor. Figure B-40. VPLUS / Motorized Valve Control PID Parameter Setup B - 63 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 220 B - 64 / Blank Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 221 Based on the error from the setpoint, the temperature controller Figure B-41. Standard VPLUS Oil Cooling System Wiring (Eliminating Temperature Controller) B - 65 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 222 Appendix B • Vission 20/20 Application Procedures Figure B-42. Temperature Controller Wiring Removed After removing the temperature controller wiring, the wiring diagram will look like Figure B-42. B - 66 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 223 B-43. Wires from AO#4 will land on wires 106 and 107, see Figure B-42. Figure B-43. Analog Output Card Wiring to VPLUS Dart Speed Controller (Wire 106 and 107) B - 67 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 224 Appendix B • Vission 20/20 Application Procedures Figure B-44. Digital Output Card Wiring to VPLUS CRV Relay Terminal 104 B - 68 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 225 Logon and navigate to the Confi guration screen, page number 6. Insure that all boards that are physically Figure B-45. Selection of Installed Boards (Confi guration Screen – Page 6) B - 69 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 226 Figure B-46. Select “Liquid Injection” method and then select the “Motorized Valve” selection. Note that by selecting the positioning valve algorithm, the speed of Figure B-46. Oil Cooling Selection for VPLUS Oil Cooling B - 70 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 227 Figure 6 below). Select “Liquid Injection” meth- od and then select the “Motorized Valve” selection. Note that by selecting the positioning valve algorithm, Figure B-46. Oil Cooling Selection for VPLUS Oil Cooling B - 71 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 228 • Avg. with Oil Manifold Temperature = De-selected. • Oil Separator Temp. Override = 100 deg F. Figure B-47. Setting the VPLUS / Motorized Valve Control PID Parameters B - 72 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 229 • Writes to the Vission should only occur when a value needs to be changed • Lower Range & Higher Range values mentioned are default values of Vission 20/20 • Users can modify Lower Range & Higher Range values from Vission 20/20 Panel and accordingly maintain their own table Table B-4.
  • Page 230 40110 Oil Separator Temperature F-INT Read N52:11 40111 Oil Manifold Temperature F-INT Read N52:12 40112 Process Temperature F-INT Read N52:13 40113 Chiller Inlet Temperature F-INT Read B - 74 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 231 40250 Filter Differential Pressure F-INT Read N54:1 40251 Start Oil Pressure F-INT Read N54:2 40252 Run Oil Pressure F-INT Read N54:3 40253 Pressure Ratio F-INT Read B - 75 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 232 WORD Read (See Notes) N55:8 40408 Trip Status Word #3 WORD Read (See Notes) N55:9 40409 Trip Status Word #4 WORD (Currently Read Unused) (See Notes) B - 76 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 233 2 = Full Time 3 = Cool Compression" N55:14 40414 Compressor Model ENUM "0 = VSR Read 1 = VSM 2 = VSS 3 = VRS" B - 77 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 234 3 = Ethernet" N56:2 40502 Remote Capacity Control ENUM "0 = Auto Read- Select Capacity Write Control 1 = Pulse Load / Unload 2 = Hold Capacity %" B - 78 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 235 Read- Write (See Notes) N56:9 40509 Stop Command 1 = Stop Read- Write N56:10 40510 Auto-Cycle Enable/ Disable 0 = Disable, 1 = Read- Enable Write B - 79 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 236 Cap Inc Dead Band Setpoint F-INT Read- 50.0 Write N57:16 40566 Cap Dec Pulse Time Setpoint F-INT Read- Write N57:17 40567 Cap Dec Dead Band Setpoint F-INT Read- 50.0 Write B - 80 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 237 Delay Per Step (hours) F-INT Read- 20.0 Write N60:2 40602 Stop Pressure F-INT Read- -15.0 200.0 Write N60:3 40603 Auto Cycle Differential F-INT Read- 20.0 Write B - 81 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 238 Read Temperature = Enabled N61:21 40631 High Discharge Superheat F-INT Read Stop Load Setpoint #1 N61:22 40632 High Discharge Superheat F-INT Read Force Unload Setpoint #1 B - 82 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 239 40678 Step 2 VFD Minimum Slide Read Position N70:9 40679 Step 2 VFD Maximum Slide Read Position N70:10 40680 Step 2 VFD Minimum Speed Read (rpm) B - 83 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 240 Setpoint #2 Write N63:8 40758 Low Suction Press. Trip F-INT Read- -15.0 300.0 Setpoint #2 Write N63:9 40759 High Disch. Press. Alarm F-INT Read Setpoint #2 B - 84 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 241 N65:2 40832 Run Oil Pressure Alarm F-INT Read N65:3 40833 Run Oil Pressure Trip F-INT Read N65:4 40834 High Filter Diff. Start Press. F-INT Read Alarm B - 85 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 242 (seconds) N66:13 40913 Oil Level #2 Safety Trip Delay Read (seconds) N66:14 40914 Low Pressure Ratio Bypass Read (seconds) N66:15 40915 Emergency Stop Timer Read (minutes) B - 86 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 243 Read- Write (See Notes) N67:8 41008 Sunday Event #3 Minute Read- Write (See Notes) N67:9 41009 Sunday Event #4 Control ENUM Read- Mode Write (See Notes) B - 87 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 244 Read- Write (See Notes) N67:20 41020 Monday Event #3 Minute Read- Write (See Notes) N67:21 41021 Monday Event #4 Control ENUM Read- Mode Write (See Notes) B - 88 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 245 Read- Write (See Notes) N67:32 41032 Tuesday Event #3 Minute Read- Write (See Notes) N67:33 41033 Tuesday Event #4 Control ENUM Read- Mode Write (See Notes) B - 89 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 246 Write (See Notes) N67:44 41044 Wednesday Event #3 Minute INT Read- Write (See Notes) N67:45 41045 Wednesday Event #4 Control ENUM Read- Mode Write (See Notes) B - 90 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 247 Read- Write (See Notes) N67:56 41056 Thursday Event #3 Minute Read- Write (See Notes) N67:57 41057 Thursday Event #4 Control ENUM Read- Mode Write (See Notes) B - 91 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 248 Read- Write (See Notes) N67:68 41068 Friday Event #3 Minute Read- Write (See Notes) N67:69 41069 Friday Event #4 Control ENUM Read- Mode Write (See Notes) B - 92 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 249 Read- Write (See Notes) N67:80 41080 Saturday Event #3 Minute Read- Write (See Notes) N67:81 41081 Saturday Event #4 Control ENUM Read- Mode Write (See Notes) B - 93 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 250 1 = Run With Write Comp 2 = Run Always 3 = Manual" N69:1 41171 Profi le ENUM "0 = Summer Read- 1 = Winter" Write B - 94 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 251 0 = Disabled, 1 Read- (Summer, Winter) = Enabled Write N69:25 41195 Step #1 Out#3 Enabled 0 = Disabled, 1 Read- (Summer, Winter) = Enabled Write B - 95 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 252 "0 = None Read (Summer, Winter) 1 = Out # 1 2 = Out # 2 3 = Out # 3 4 = Out # 4" B - 96 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 253 41335 Date – Day (1-31) Read- Write Confi guration (Other) N77:0 41340 Anti-Recycle ENUM "0 = True Anti- Read Recycle Accumulative Anti-Recycle 2 = Hot Starts" B - 97 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 254 "0 = Solenoids Read 1 = Motorized Valve" N77:19 41359 # Liquid Injection Solenoids Read N77:20 41360 Discharge Press. Control 0 = No, 1 = Yes Read Available B - 98 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 255 1 = Suction Pressure SP1 2 = Suction Pressure SP2 3 = Process Temp. SP1 4 = Process Temp. SP2 5 = Discharge Pressure SP1 6 = Discharge Pressure SP2 B - 99 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 256 Bit 14 = Oil Level #2 Trip Bit 14 = Unused Bit 15 = Low Suction Temp. Trip Bit 15 = Low Oil Level Trip After Bit 15 = Unused Stop B - 100 Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0...
  • Page 258 35391SC 2.0 (7/13) Emerson and Vilter are trademarks of Emerson Electric Co. or one of its affi liated companies. © 2012 Emerson Climate Technologies, Inc. All rights reserved. Printed in the USA.

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