Emerson VISSION 20/20 - Manual

11 Installation Recommendations Proper Wire Sizing • As a minimum, always size wire gauges as specified by the National Electrical Code (NEC) for electronic con-trol devices. • For improved noise immunity, install one size larger wire gauge than the NEC requirement to assure ample current-carrying c...

16 DO: • Keep AC wires away from circuit boards. • Always run conduit into the bottom or sides of an enclosure. • If the conduit must be placed in the top of an enclosure, use a water-tight conduit fit- ting to keep water from entering the enclosure. • The Vission 20/20 is supplied with pre-punched ...

17 Vission 20/20 Architecture The Vission 20/20 control panel utilizes X-86 PC technology with a Linux Operating system. The Vission 20/20 has the following attributes: • Low power, Industrial rated X-86 CPU. • 15” XGA, high resolution LCD display. (Outdoor viewable LCD optional). • 8-wire touch scr...

21 BOARD I/O DESCRIPTION TYPE #6 1 Motor Current 4-20 mA, 0-5A 6 2 Suction Pressure 0-5V, 1-5 V, 0-10V, 4-20 mA 6 3 Discharge Pressure 0-5V, 1-5 V, 0-10V, 4-20 mA 6 4 Oil Filter Pressure 0-5V, 1-5 V, 0-10V, 4-20 mA 6 5 Oil Manifold Pressure 0-5V, 1-5 V, 0-10V, 4-20 mA 6 6 VRS Oil Injection Pressure ...

23 BOARD I/O # DESCRIPTION TYPE #10 1 Compressor VFD 4-20 mA 10 2 Condenser VFD 4-20 mA 10 3 % Slide Valve Position 4-20 mA 10 4 Motorized Valve (Cool Compression or Liquid Injection), V+ 4-20 mA 10 5 Profile Cooler VFD (Profile only) 4-20 mA 10 6 10 7 10 8 COMPRESSOR VFD – 4-20mA output to control ...

24 Main Screen The main screen gives the operator an overall view of operating parameters affecting the compressor package. This screen is displayed when maintenance items and set-points items are not being performed. The data on the screen is continuously updated. Menu Button Navigates to the menu ...

26 COMPRESSOR CONTROL - Navigates to the compressor control screen where the operator can set the variouscom- pressor control parameters. ALARMS AND TRIPS - Navigates to the alarms and trips screen where the operator can set the various alarm and trip parameters. TIMERS - Navigates to the timer scre...

28 This screen allows the operator to view and adjust settings that affect compressor capacity control. COMPRESSOR CONTROL • Pressure/Temperature control setpoints • Auto-cycle control points • VFD control set-points • Pump-down control setpoints • Pull-down control setpoints The Vision 20/20 comes ...

34 Misc. Control • Control Mode = Drop-down box allows selection of current operating mode, from the list of allowable modes. • High Motor Amps (Unloading) = This control feature will limit the compressor capacity when the compressor motor amps reaches these load limiting set-points. When the set-po...

37 This screen allows the operator to view and adjust settings for compressor safety and alarm settings. Alarms and Trips defined are: • Low Suction Pressure set-points • High Discharge Pressure set-points • High Process Temperature set-points • Low Process Temperature set-points • Low Suction Tempe...

39 • Low Suction Temperature = This is the low suction temperature safety. The alarm or trip will be active if the suction temperature should drop to a value that is at or below the set-point value. • High Discharge Temperature : This is the high discharge temperature safety. The alarm or trip will ...

41 This screen allows the operator to view and adjust timer settings associated with compressor operation. Timers defined are: • Capacity Increase Start Delay • Minimum Compressor Pre lube Time • Low Oil Pressure Safety Changeover • High Filter Differential Pressure Safety Changeover • Low Oil Separ...

44 This screen allows the operator to force digital outputs ON for diagnostic purposes. If you choose to exit this menu while an output is still forced on, the output will be “unforced” before the menu exits. Note: The forcing of the compressor output will be limited to a “bump” for the purposes of ...

46 Vilter Slide Valve Actuator Calibration Procedure for Optical Style Motors Assuming that the ACTUATOR motors have not been calibrated, the transmitter output of the ACTUATOR motor will fluctuate wildly until they are calibrated. To prevent damage to ACTUATOR motors, do not connect the Power Cable...

48 NOTES: The manual operating shaft on the gear motor should be turned the opposite direction of the desired command shaft rotation. The capacity and volume control motors are equipped with a brake, if it is necessary to operate the control motors manually, the brake must be disengaged. The brake c...

49 Slide Valve Operation The slide valve actuator is a gear-motor with a posi-tion sensor. The motor is powered in the forward and reverse directions from the main computer in the control panel. The position sensor tells the main computer the position of the slide valve. The main computer uses the p...

50 The actuator cannot be cali-brated The actuator goes into cali-bration mode spontaneously The actuator goes into calibra-tion mode every time power is restored after a power loss Dirt or debris is blocking one or both optocoupler slots The photochopper fence extends less than about half way into ...

51 The motor was manually moved while the position sensor was not powered. The motor brake is not working properly T h e p os i t io n sen so r ’ s E E PRO M memory has failed The photochopper is misaligned with the slotted optocouplers The photochopper is positioned too low on the motor shaft. A mo...

53 This screen allows the operator to view and adjust settings for the trend chart. The trend analysis screen shows recorded data for problem analysis or tuning improvements. A logging buffer holds 30 minutes of data for 13 variables sampled at 10 second intervals. When the logging buffer fills with...

54 This screen is designed to display compressor events, in chronological order and time stamped. The top of the list shows the most recent event followed by older events. Event List Screen

55 This screen allows showing of “Live Data” of all analog points and digital points being monitored, or of “Frozen Data”. Frozen data is a snapshot of the values of the analog points and digital points at the time in which the com-pressor last shutdown, either by normal shutdown methods or via a fa...

59 MA Log on and check off each item as completed at the listed service interval. Maintenance Screen

60 This menu allows the operator to assign user accounts. The 20/20 will be shipped with a Level 3 operator and password pre-assigned to the installing contractor. He can then assign all lower level securities as needed. The procedure to assign access levels is to first press the logon button. The l...

62 Level 1 View Only No password associated with this level Level 2 Operator Level Limited access Level 3 Full Access Supervisor Page User Level Note Event list Level 1 Input/output states Level 1 Trend chart Level 1 Slide calibration Level 3 Instrument calibration Level 3 Service options Level 3 Co...

63 Suction Pressure SP#1 Fail - This message will appear when the suction pressure falls below the safety setting of the Low Suction Pres- sure Trip Setpoint No.1. In addition, this message will appear when the suction pressure reading rises above 300 PSI, indicating an open transducer or bad analog...

65 Vission 20/20 Troubleshooting Guide Before applying power to the Vission 20/20 control panel, all wiring to the panel should be per the National Electrical Code (NEC). Specifically check for proper voltage and that the neutral is grounded at the source. An equipment ground should also be run to t...

66 The illustration above shows the position and type of the digital and analog input/output (I/O) boards. It is im-portant to install the boards as shown in this illustration and configure them as show in the following illustrations. DIPSWITCHES Each board has a dipswitch which sets its communicati...

69 Digital Input DIPSWITCH POSITION 4 Open (right) 3 Open (right) 2 Closed (left) 1 Closed (left)

76 Analog Output DIPSWITCH POSITION 4 Closed (left) 3 Open (right) 2 Closed (left) 1 Open (right)

77 CHANNEL #1 SIGNAL JP-1 JP-2 JP-3 JP-27 JP-35 NOTES Analog Input 1-A 0-5 AMP OUT OUT OUT OUT IN Analog 1-A For Current Analog Input 1-B 0-5 Volt OUT OUT OUT OUT OUT Transformers 1-5 Volt OUT OUT OUT OUT OUT Only. 0-10 Volt OUT OUT IN OUT OUT 4-20 mA IN OUT OUT OUT OUT ICTD OUT IN OUT OUT OUT RTD O...