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12 – 8
Section 12 • Communications with a Central Controller/DCS
Single Screw Compressor PLC Operation Manual • Vilter/Emerson • 35391CM
Alarm and Trip Data
Alarm and Trip Data is presented in Double Integer Format. To interpret the Alarm and Trip data, it is necessary to ad-
dress the specifi c bits of the Double Integer.
ALARMS AND TRIPS (Data Type = DINT)
Interface Tag Description
BOOL_OUT[1].0 (A001) Alarm: (Unassigned)
BOOL_OUT[1].1 (A002) Alarm: PLC to Central Comms Faulted
BOOL_OUT[1].2 (A003) Alarm: High Main Motor Amps
BOOL_OUT[1].3 (A004) Alarm: (Unassigned)
BOOL_OUT[1].4 (A005) Alarm: (Unassigned)
BOOL_OUT[1].5 (A006) Alarm: Low Separator Oil Level
BOOL_OUT[1].6 (A007) Alarm: Not Assigned
BOOL_OUT[1].7 (A008) Alarm: Not Assigned
BOOL_OUT[1].8 (A009) Alarm: Not Assigned
BOOL_OUT[1].9 (A010) Alarm: Not Assigned
BOOL_OUT[1].10 (A011) Alarm: Low Suction Temperature
BOOL_OUT[1].11 (A012) Alarm: High Discharge Temperature
BOOL_OUT[1].12 (A013) Alarm: Low Oil Separator Temperature - Start
BOOL_OUT[1].13 (A014) Alarm: Low Oil Separator Temperature - Run
BOOL_OUT[1].14 (A015) Alarm: Low Oil Injection Temperature
BOOL_OUT[1].15 (A016) Alarm: High Oil Injection Temperature
BOOL_OUT[1].16 (A017) Alarm: Low Process Temperature
BOOL_OUT[1].17 (A018) Alarm: High Process Temperature
BOOL_OUT[1].18 (A019) Alarm: High Suction Temperature
BOOL_OUT[1].19 (A020) Alarm: Low Liquid Refrigerant Temperature
BOOL_OUT[1].20 (A021) Alarm: Low Suction Pressure Stpt. 1
BOOL_OUT[1].21 (A022) Alarm: Low Suction Pressure Stpt. 2
BOOL_OUT[1].22 (A023) Alarm: High Discharge Pressure Stpt. 1
BOOL_OUT[1].23 (A024) Alarm: High Discharge Pressure Stpt. 2
BOOL_OUT[1].24 (A025) Alarm: Low Net Oil Pressure - Run
BOOL_OUT[1].25 (A026) Alarm: Unassigned
BOOL_OUT[1].26 (A027) Alarm: High Oil Filter Differential - Start
BOOL_OUT[1].27 (A028) Alarm: High Oil Filter Differential - Run
BOOL_OUT[1].28 (A029) Alarm: Low Oil Pressure - Start
BOOL_OUT[1].29 (A030) Alarm: (Unassigned)
BOOL_OUT[1].30 (A031) Alarm: Out of Range: Oil Cooler Inlet Temp
BOOL_OUT[1].31 (A032) Alarm: Out of Range: Oil Cooler Outlet Temp
BOOL_OUT[2].0 (A033) Alarm: Out of Range: Condensing Pressure
Table 12-3. Alarm Data
- 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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