Emerson VISSION 20/20 service manual

OIL MANIFOLD PRESSURE - Default signal is 4-20Ma. Oil manifold pressure transducer range and calibration is set in the calibration screen.

VRS OIL INJECTION PRESSURE – Default signal is 4-20Ma. VRS oil injection pressure transducer range and calibra- tion is set in the calibration screen.

%SLIDE VALVE POSITION – Reads the 0-5 volt signal back from the slide position motor actuator to indicate cur- rent slide valve position.

%VOLUME POSITION – Reads the 0-5 volt signal back from the slide volume motor actuator to indicate current volume position.

SUCTION TEMPERATURE – Default signal is RTD. Suction temperature calibration is set in the calibration screen.

DISCHARGE TEMPERATURE – Default signal is RTD. Discharge temperature calibration is set in the calibration screen.

OIL SEPARATOR TEMPERATURE – Default signal is RTD. Oil separator temperature calibration is set in the calibra- tion screen.

OIL MANIFOLD TEMPERATURE – Default signal is RTD. Oil manifold temperature calibration is set in the calibra- tion screen.

PROCESS TEMPERATURE – Default signal is RTD. Process temperature calibration is set in the calibration screen.

LEVEL PROBE (COOL COMPRESSION) – Default signal is 4-20mA. Measures separator level. Level probe calibration is set in the calibration screen.

CONDENSER PRESSURE – Default signal is 4-20Ma. Condenser pressure transducer range and calibration is set in the calibration screen.

REMOTE CAPHOLD – Default signal is 4-20Ma. Active in “Direct I/O” mode. Adjusts the capacity of the compres- sor from 0-100%, proportional to the 4-20mA signal.

ECONOMIZER PRESSURE – Default signal is 4-20Ma. Economizer pressure transducer range and calibration is set in the calibration screen.

CHILLER IN TEMPERATURE – Default signal is RTD. Chiller inlet temperature calibration is set in the calibration screen.

MOTOR WINDING TEMPERATURE #1 thru #3 - Default signal is RTD. One RTD is installed in each of the three mo- tor windings to monitor motor winding temperature.

AUXILIARY #1 thru #7 – Flexible analog inputs that can be configured to control, alarm or trip.

BEARING TEMP #1 thru #4 - Default signal is RTD. Monitors bearing temperatures in both the compressor and motor.

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