Emerson Vilter Vission 20/20 Operation And Service Manual page 6

Section Title
Variable Frequency Drive (VFD) .............................................................................................................. 6-5
Oil Restriction Solenoid .......................................................................................................................... 6-7
Rapid Cycling VFD Control ...................................................................................................................... 6-8
Pumpdown Control................................................................................................................................ 6-9
Pulldown Control ................................................................................................................................... 6-10
Active Control Mode .............................................................................................................................. 6-11
Load Anticipating ................................................................................................................................... 6-11
Oil Control ............................................................................................................................................. 6-12
Stop Load & Force Unload ...................................................................................................................... 6-14
Capacity Slide Triggered Outputs ........................................................................................................... 6-15
Volume Slide Position Offset .................................................................................................................. 6-15
Soft Load ............................................................................................................................................... 6-16
Liquid Injection ...................................................................................................................................... 6-16
Dual Liquid Injection .............................................................................................................................. 6-18
Liquid Injection Outlet Port Direction ..................................................................................................... 6-19
VI Control - Twin Screw .......................................................................................................................... 6-20
Fixed VI.. ................................................................................................................................................ 6-20
Continuos VI .......................................................................................................................................... 6-21
Step VI... ................................................................................................................................................ 6-22
Section 7 • Alarms and Trips
Overview ............................................................................................................................................... 7-1
Warnings. .............................................................................................................................................. 7-1
Inhibits. ................................................................................................................................................. 7-1
Alarms... ................................................................................................................................................ 7-2
Trips .... .................................................................................................................................................. 7-2
Freeze Screen .... .................................................................................................................................... 7-2
Logging - Event List ..... .......................................................................................................................... 7-2
Setpoints .... .......................................................................................................................................... 7-2
Add Oil to the Middle Sight Glass ........................................................................................................... 7-8
Analog AUX In 1-16. ............................................................................................................................... 7-8
Compressor Interlock Trip ...................................................................................................................... 7-8
Digital AUX In 1-8 ................................................................................................................................... 7-8
Discharge Pressure
High Discharge Pressure ........................................................................................................................ 7-9
Low Discharge Pressure ......................................................................................................................... 7-9
Discharge Superheat Temperature
High Discharge Superheat Start Temp .................................................................................................... 7-9
High Discharge Superheat Rise Temp ..................................................................................................... 7-9
High Discharge Superheat Run Temp ..................................................................................................... 7-10
Discharge Temperature
High Discharge Temp. ............................................................................................................................ 7-10
Low Discharge Temp .............................................................................................................................. 7-10
Emergency Shutdown Activated ............................................................................................................ 7-10
False Start .............................................................................................................................................. 7-10
Filter Differential Pressure
High Filter Differential Pressure .............................................................................................................. 7-11
Level Shutdown ..................................................................................................................................... 7-11
Motor Current. ....................................................................................................................................... 7-11
Oil Filter Inlet Pressure. .......................................................................................................................... 7-12
Low Oil Filter Inlet Pressure .................................................................................................................... 7-12
Low Oil Filter Outlet Pressure ................................................................................................................. 7-12
High Oil Injection Temp.......................................................................................................................... 7-12
Low Oil Injection Temp ........................................................................................................................... 7-12
TOC - 2
Table of Contents
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Section Number