Emerson VISSION 20/20 service manual Liquid Injection #2 Output Not Defined

Page 19

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 valve to a lower percent- age, this output is energized. Once the slide valve reaches 0%, this output will not energize.

VOLUME INCREASE OUTPUT – This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should increase VI by moving the volume slide to a higher percentage, this out- put is energized. Once the volume slide reaches 100%, this output will not energize.

VOLUME DECREASE OUTPUT – This output is only active when the compressor is running. When the Vission 20/20 determines that the compressor should decrease VI by moving the volume slide to a lower percentage, this output is energized. Once the volume slide reaches 0%, this output will not energize.

OIL SUMP HEATER OUTPUT – This output is active and energized when the oil separator temperature is lower than the oil separator temperature setpoint. It is de-energized when the oil separator temperature is higher than the oil separator temperature setpoint.

ALARM OUTPUT – This output is energized when the system has no alarms. If an alarm is issued, the output de- energizes and stays de-energized until the alarm condition is cleared.

SLIDE VALVE SETPOINT #1 OUTPUT (ECONOMIZER) – Normally used for an economizer solenoid, but could be used for other devices. When the compressor slide valve percentage is equal to or greater than “slide valve set-point #1”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #1”, the output is de-energized.

SLIDE VALVE SETPOINT #2 OUTPUT (HOT GAS) – Normally used for a hot gas solenoid, but could be used for other devices. When the compressor slide valve percentage is equal to or greater than “slide valve set-point #2”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #2”, the output is de-energized.

SLIDE VALVE SETPOINT #3 OUTPUT – When the compressor slide valve percentage is equal to or greater than “slide valve set-point #3”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #3”, the output is de-energized.

SLIDE VALVE SETPOINT #4 OUTPUT – When the compressor slide valve percentage is equal to or greater than “slide valve set-point #4”, the output is energized. When the compressor slide valve percentage is less than “slide valve set-point #4”, the output is de-energized.

LIQUID INJECTION #1 OUTPUT – If the compressor has liquid injection oil cooling, this output is active. When the compressor is running and the discharge temperature is above the liquid injection temperature control set-point

5 degrees, and the oil separator temperature is above the override setpoint, then the output is energized. The output is de-energized when the discharge temperature falls below the “on” setpoint minus the solenoid differ- ential.

LIQUID INJECTION #2 OUTPUT – Not Defined

REMOTE ENABLED OUTPUT – This output is energized when the Vission 20/20 panel is enabled for remote con- trol. The compressor can be running or stopped, but is available to the remote system. If the compressor has an alarm or is placed into the manual stop position, this output is de-energized.

19

Image 19
Contents Control Panel Page Important Note Page Touch Screen LCD Display Optional Analog Input Jumper Tables Standard Vilter Warranty Page Operational Flow Charts Page Voltage Source Proper Wire SizingVoltage Source Grounding Mixing Voltages Wiring Methods DON’T Touch Screen Description Type Liquid Injection #2 Output Not Defined Page Analog Inputs Page Compressor VFD 20 mA Condenser VFD Slide Valve Position Main Screen Touch Screen LCD DisplayMenu Button LOG on Button IndicatorsMenu Screen Page Compressor Control Time Proportioning Control Auto-Cycle Setpoints Other Setpoints That Might be Required for Motor PID Control Pump-down Pull-down Misc. Control Page Page Alarms and Trips Screen Page Alarms and Trips Page Timers Page Timers Service Options Instrument Calibration Slide Calibration Remove Cover Press Down On Photochopper Command Shaft Rotation Capacity Volume INC DEC CCW Slide Valve Operation Problem Reason Solution Slide Valve Trouble Shooting GuideProblem Replace the actuator. See above Trend Chart Event List Screen Input / Output States Configuration Screens Page Page Maintenance Screen Log In Screen Screen to Add Users User Level Suction Pressure SP#2 Fail Percent Volume FailLow Control Temperature Fail Suction Pressure SP#1 FailLow Oil Injection Temp Fail Auxiliary Safety#1 Input FailLow Start Oil Pressure Fail Low Oil Pressure FailVission 20/20 Troubleshooting Guide Digital & Analog Boards DipswitchesDipswitch Position Digital Output #2 Digital Input Digital Input/Output #1 Digital Input/Output #2 POSITION-1 JP-16 JP-19 JP-22 JP-27 JP-28 JP-29 JP-30 JP-31 POSITION-2 Jumper Position Analog Output Optional Analog Input Jumper Tables Channel #6 Signal Page EmersonClimate.com