Emerson VSG & VSSG Specifications Page 116
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Section 11 • Alarms, Trips, Status Information & Troubleshooting
Single Screw Compressor PLC Operation Manual • Vilter/Emerson • 35391CM
Alarm Message Cause(s) Notes
(A001) Alarm: (Unassigned)
(A002) Alarm: PLC to Central Comms
Faulted
Loss of Communication with DCS/
Central - Settable Communications
Watchdog Timer Expired. (Alarm
and Revert to Local Selected on
Communication Failure.)
Watchdog Active if Control by
Communications is selected
(A003) Alarm: High Main Motor
Amps
Main Motor Amps exceeds Motor
Amps High Alarm setpoint.
(A004) Alarm: (Unassigned)
(A005) Alarm: (Unassigned)
(A006) Alarm: Low Separator Oil
Level
Oil Separator Level Switch has
opened indicating drop in Separator
Oil Level. (Alarm action Selected)
Active if Oil Separator Level Switch
Selected.
(A007) Alarm: Not Assigned
(A008) Alarm: Not Assigned
(A009) Alarm: Not Assigned
(A010) Alarm: Not Assigned
(A011) Alarm: Low Suction
Temperature
Suction Temperature falls below
"Suction Temperature" Low Alarm
Setpoint.
(A012) Alarm: High Discharge
Temperature
Discharge Temperature exceeds
"Discharge Temperature" High Alarm
Setpoint.
(A013) Alarm: Low Oil Separator
Temperature - Start
Separator Oil Temperature is Below
"Separator Oil Temperature - Start"
Low Alarm Setpoint when compres-
sor is off or Oil Separator Start-Run
Timer has not expired.
(A014) Alarm: Low Oil Separator
Temperature - Run
Separator Oil Temperature is
Below "Separator Oil Temperature
- Run" Low Alarm Setpoint After
Oil Separator Start-Run Timer has
expired.
(A015) Alarm: Low Oil Injection
Temperature
Oil Injection Temperature is Below
"Oil Injection Temperature" Low
Alarm Setpoint after compressor has
completed pre-lube and warm up
stages.
(A016) Alarm: High Oil Injection
Temperature
Oil Injection Temperature exceeds
"Oil Injection Temperature" High
Alarm Setpoint
Table 11-1. Alarm Listing
Alarm Listing
The following table shows all possible alarms and trips and possible causes. Some alarms and trips are application
specifi c, and do not apply unless a specifi c option is selected.
To reset alarms or trips press the “Alarm Reset” Button on the overview screen. If the condition is cleared, the alarm
will reset. If the condition is not cleared, the alarm will remain active.
- Single Screw Compressor PLC 1
- Important Message 4
- Table of Contents 5
- List of Tables and Figures 10
- HOW TO USE THIS MANUAL 13
- ADDITIONAL IMPORTANT NOTES 13
- Glossary of Terms 14
- 23 678 5 19
- Wiring Requirements 21
- Overview 23
- Operational Descriptions and 24
- Diagrams 24
- COMPRESSOR STARTUP SEQUENCE 25
- AUTO START-STOP 26
- ANTI-RECYCLE 26
- CAPACITY SLIDE CONTROL 26
- OPERATING MODES 30
- DISCHARGE 31
- PRESSURE 31
- SUCTION 31
- VFD CAPCITY CONTROL 32
- VOLUME SLIDE CONTROL 32
- SAFETIES 32
- EMERGENCY STOP 32
- OIL HEATERS 33
- OIL DRAIN SOLENOID 33
- 2-WAY OIL MIXING VALVE 34
- OIL INJECTION VALVE 34
- OIL COOLER TEMPERATURES 35
- OIL COOLER STANDBY HEATER 35
- EVAPORATIVE CONDENSER 37
- OIL COOLER 38
- CONDENSER 39
- WATER COOLED GAS AFTERCOOLER 40
- WATER COOLED CONDENSER 41
- LIQUID INJECTION VALVE 42
- VPLUS LIQUID INJECTION PUMP 43
- DISCHARGE RECYCLE VALVE 44
- ECONOMIZER SOLENOID(S) 45
- HOTGAS BYPASS SOLENOID 45
- VENTURI OIL RECOVERY 45
- GAS SCRUBBERS 45
- BUILDING ENCLOSURE DEVICES 46
- PERIODIC SLIDE VALVE EXERCISE 46
- Section 3 • Overview Screens 47
- 3 – 8 / Blank 54
- Section 4 • HMI Navigation 55
- 4 – 10 / Blank 64
- DATE AND TIME 66
- REMOTE OPERATION 66
- PANELVIEW CONFIGURATION 68
- INITIAL RUNNING DATA 68
- DEVICE NAMES 68
- BACK TO MENU 68
- Editing Device Names 69
- INSTRUMENTATION 70
- ALARM AND TRIP 71
- Calibration Main Screen 73
- Pressure Calibration Screen 74
- CALIBRATE PRESSURE INSTRUMENT 75
- OPTION 1 75
- OPTION 2 75
- Slide Calibration Screen 78
- Figure 6-8. Actuator Assembly 80
- Figure 6-9. Photo-chopper 81
- 6 – 10 / Blank 82
- Setpoints and Control Screens 83
- Compressor Control Setpoints 84
- MAIN MOTOR VFD 86
- DISCHARGE PRESSURE CONTROL 87
- CAPACITY SLIDE VALVE 87
- AUTO START/STOP 88
- ANTI-RECYCLE 89
- START UP 89
- SHUT DOWN 89
- PART TIME OIL PUMP 90
- LOAD LIMITS 90
- VOLUME SLIDE ADJUSTMENT 90
- MAIN MOTOR FLA 90
- OIL SEPARATOR HEATERS 90
- 7 – 10 / Blank 92
- Alarm and Trip Setpoints 93
- Oil Mixing Valve Screen 95
- Aftercooler Screens 98
- Condenser Screens 101
- Volume Slide Details Screen 107
- Start Menu Popup Screen 108
- IO/Comms Diagnostics Screen 109
- Event List Screen 110
- 10 – 6 / Blank 114
- Alarm Listing 115
- Alarm Message Cause(s) Notes 117
- Trip Listing 123
- Trip Message Cause(s) Notes 124
- Status Message Notes 130
- Troubleshooting 134
- Communication with a Central 135
- Controller/DCS 135
- Compressor PLC 135
- Pressure Units 136
- Temperature Units 136
- Alarm and Trip Data 142
- Interface Tag Description 143
- Status Data 150
- States of Discrete I/O 154
- Table 12-8. State Indicator 159
- Table 12-9. Mode Indicator 159
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