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Control Panel
Operation and Service Manual
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Important Note Before applying power to the control panel, all wiring to the panel should be per NEC. Specifically check for proper voltage and that the neutral is grounded at the source. An equipment ground should also be run to the panel. *See Wiring Instructions and Diagrams before proceeding. Before start-up you need to enter all system values and options. See section on Setpoint Values. 3
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Table of Contents Important Note ........................................................................................... 3 Standard Vilter Warranty ............................................................................ 7 Operational Flow Charts .............................................................................. 9 Installation Recommendations .................................................................. 11 Best Practices .................................................
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Digital & Analog Boards ............................................................................. 66 Digital Output #1 .................................................................................. 67 Digital Output #2 .................................................................................. 68 Digital Input .......................................................................................... 69 Digital Input/Output #1 ...................................................
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Standard Vilter Warranty Seller warrants the products it manufactures to be free from defects in material and workmanship for a period of eighteen (18) months from the date of shipment from Seller’s manufacturing plant or twelve (12) months from date of installation at the initial end users location, whichever occurs first. In addition, Seller provides the following extended warranties: (a) three (3) years from the date of shipment on single screw compressor internal rotating parts, (b) two
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Operational Flow Charts 9
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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 capability • Never undersize wire gauges. Voltage Source • Transformers block a large percentage of Electro-Magnetic Interference (EMI). • The Vilter Vission 20/20 should be isolated with its own c
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Voltage Source • Connecting the Vilter Vission 20/20 to breaker panels and central control transformers exposes the Vission 20/20 to large amounts of electromagnetic interference (EMI) emitted from the other devices connected to the secondary terminals of the transformer. This practice should be avoided if possible. 12
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Grounding • Continuous grounds must be run from the power company ground to the Vission 20/20. • Grounds must be copper or aluminum wire. • Never use conduit grounds. 13
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Mixing Voltages • Separate different voltagesfrom each other and separate AC from DC. • Each voltage level must be run in separate conduit: • 460 VAC • 230 VAC • 120 VAC • 24 VAC • DC signals • If your plant has wire-ways or conduit trays, dividers must be installed between the different voltages. 14
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Wiring Methods • Don’t “Daisy-Chain” control power for Vission 20/20 panels. 15
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Best Practices 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 conduit holes. Use them! DON’T: • Don’t run wires through the Vission 20/20 enclosure that are not related to the com- pressor control. • Don’t add relays, timers, transformers, etc
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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 screen operator interface. • Flexible and expandable I/O. • NEMA-4 enclosure (NEMA-4X optional). • Industrial temperature range design. Touch Screen I/O I/O LCD DISPLAY ETHERNET I/O I/O RS-485
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Digital Input/Output BOARD I/O # DESCRIPTION TYPE # 1 1 Compressor Start OUTPUT 1 2 Oil Pump Start OUTPUT 1 3 Capacity Increase OUTPUT 1 4 Capacity Decrease OUTPUT 1 5 Volume Increase OUTPUT 1 6 Volume Decrease OUTPUT 1 7 Oil Sump Heater OUTPUT 1 8 Alarm OUTPUT 2 9 Slide Valve Set point #1 (Economizer) OUTPUT 2 10 Slide Valve Set point #2 (Hot Gas) OUTPUT 2 11 Slide Valve Set point #3 OUTPUT 2 12 Slide Valve Set point #4 OUTPUT 2 13 Liquid Injection #1 OUTPUT 2 1
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CAPACITY INCREASE OUTPUT – This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should increase capacity by moving the slide valve to a higher percent- age, this output is energized. Once the slide valve reaches 100%, this output will not energize. CAPACITY DECREASE OUTPUT – This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should decrease capacity by moving the slide v
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VRS OIL SOLENOID OUTPUT – Used in VRS retrofit applications where an oil solenoid is installed in the oil line. COMP MOTOR STARTER AUXILIARY CONTACT – This input looks for a feedback signal from the compressor starter, confirming that the compressor starter is energized. HIGH LEVEL SHUTDOWN INPUT – This input must be energized in order for the compressor to operate. If de-ener- gized, the compressor will shut down and issue a high level trip. OIL LEVEL FLOAT SWITCH #1 INPUT – Used for Cool C
