{
 "manufacturer": "York",
 "manufacturer_slug": "york",
 "model": "YST Steam Turbine Chiller - OptiView E-Link (YorkTalk 3)",
 "model_slug": "yst-e-link",
 "short_model": "YST E-Link",
 "aliases": [
  "YORK YST",
  "YST OptiView",
  "steam turbine chiller",
  "E-Link",
  "eLink",
  "YorkTalk 3"
 ],
 "equipment_type": "Steam turbine driven centrifugal chiller (via E-Link gateway)",
 "applies_to": "YORK YST steam turbine driven centrifugal chillers with OptiView panel, connected through a YORK E-Link gateway over YorkTalk 3.",
 "summary": "The E-Link gateway reads the YST OptiView microboard over YorkTalk 3 and serves BACnet, N2, LON and Modbus objects: remote setpoint and start/stop, water temperatures and pressures, turbine and steam values and the status codes.",
 "bacnet_transport": [],
 "firmware": null,
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "Every YorkTalk 3 E-Link sheet uses the same slot skeleton (P03 = AV 1 and so on); only the slots this chiller populates are listed, and slots marked not available on every program version are left out.",
  "Object names are the E-Link names printed on the sheet; the sheet also gives LON, N2 and Modbus addresses, not reproduced here.",
  "Access follows the sheet's Modbus function note: the remote slots AV 1-4 and BV 1-4 accept writes; the rest are read-only.",
  "Multistate states are shown as printed (from 0); this sheet does not say whether the BACnet value adds 1, so confirm by discovery (read the state text)."
 ],
 "source": {
  "title": "YST OptiView E-Link points list",
  "doc_number": null,
  "revision_date": "2010-09-24 (Rev K_03)",
  "url": "https://docs.johnsoncontrols.com/chillers/api/khub/documents/gb8ypitRHG4X5jrdL35ABQ/content"
 },
 "integration": {
  "summary": "Put the chiller in remote/ISN control at the panel, then start and stop it with the E-Link remote run/stop object and write the remote setpoint and current limit. Read the operating, safety and warning codes, run status and water temperatures.",
  "minimum_points": [
   {
    "ref": "BV 1",
    "name": "REM START STOP CMD",
    "why": "Remote start/stop (1 = run)"
   },
   {
    "ref": "AV 1",
    "name": "REM LEAVING CHW TEMP SP",
    "why": "Remote leaving chilled liquid setpoint"
   },
   {
    "ref": "MV 5",
    "name": "UNIT CONTROL SOURCE",
    "why": "Must read ISN (BAS) for BMS control"
   },
   {
    "ref": "MV 1",
    "name": "UNIT OPERATION CODE",
    "why": "Unit operating status code"
   },
   {
    "ref": "AV 5",
    "name": "LEAVING CHW TEMP",
    "why": "Leaving chilled liquid temperature"
   },
   {
    "ref": "AV 6",
    "name": "ENTERING CHW TEMP",
    "why": "Entering chilled liquid temperature"
   },
   {
    "ref": "MV 2",
    "name": "UNIT SAFETY FAULT CODE",
    "why": "Safety (shutdown) fault code"
   },
   {
    "ref": "MV 4",
    "name": "UNIT WARNING FAULT CODE",
    "why": "Active warning code"
   }
  ],
  "enable": "The E-Link remote slots (AV 1-4, BV 1-4) are the BMS commands; the chiller panel must be set for remote (ISN/BAS) control for them to take effect.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "The E-Link gateway talks to the chiller microboard over YorkTalk 3 and serves BACnet, N2, LON and Modbus; BACnet addressing is set on the E-Link.",
   "Check the chiller program version against the sheet's version table; availability codes (S/O/N) are per version."
  ],
  "gotchas": [
   "Points marked optional (O) on the sheet report only on units with that option or program version."
  ]
 },
 "points": [
  {
   "type": "AV",
   "instance": 1,
   "name": "REM LEAVING CHW TEMP SP",
   "description": "Leaving Chilled Liquid Temperature Setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "TURBINE HP LIMIT SP",
   "description": "Turbine Horsepower Limit Setpoint (% of available range)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "REM START STOP CMD",
   "description": "START_STOP",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "LEAVING CHW TEMP",
   "description": "Leaving Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "ENTERING CHW TEMP",
   "description": "Return Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "EVAPORATOR PRESSURE",
   "description": "Chiller Evaporator Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 8,
   "name": "CONDENSER PRESSURE",
   "description": "Chiller Condenser Pressure PSIG",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "COMPR OIL COMP DIF PRESS",
   "description": "Compressor Oil Pressure PSIG",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "ENTERING COND WATER TEMP",
   "description": "Entering Condenser Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 11,
   "name": "LEAVING COND WATER TEMP",
   "description": "Leaving Condenser Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "TURBINE INLET STEAM TEMP",
   "description": "Turbine Inlet Steam Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "TURBINE INLET STEAM PRES",
   "description": "Turbine Inlet Steam Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "TURBINE SUPPLY OIL TEMP",
   "description": "Turbine Supply Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 15,
   "name": "TURBINE SUPPLY OIL PRESS",
   "description": "Turbine Supply Oil Pressure PSIG",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "TURBINE 1ST STG STM PRES",
   "description": "Turbine First Stage Steam Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "TURBINE SPEED",
   "description": "Turbine Speed",
   "units": "rpm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "TURBINE EXHAUST STM PRES",
   "description": "Turbine Exhaust Steam Pressure PSIA",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "LEAVING CHW TEMP ACT SP",
   "description": "Leaving Chilled Liquid Temperature Setpoint - Local",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "COMPRESSOR PRV POSITION",
   "description": "Compressor PRV Position",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "EVAP SATURATION TEMP",
   "description": "Chiller Evaporator Saturation Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "COND SATURATION TEMP",
   "description": "Chiller Condenser Saturation Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "DISCHARGE TEMP",
   "description": "Compressor Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 24,
   "name": "OIL SUMP TEMPERATURE",
   "description": "Compressor Sump Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "SUBCOOLER REFRIG LEVEL",
   "description": "Subcooler Refrigerant Level",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 26,
   "name": "ACCUM OPERATING HOURS",
   "description": "Accumulated Operating Hours",
   "units": "hours",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "ACCUM SYSTEM STARTS",
   "description": "Accumulated System Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 28,
   "name": "OIL SUMP PRESSURE",
   "description": "Compressor Sump Oil Transducer Pressure PSIG",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 29,
   "name": "OIL PUMP PRESSURE",
   "description": "Compressor Pump Oil Transducer Pressure PSIG",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "PANEL ROCKER SW RUN",
   "description": "Panel Rocker Switch - Run",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 6,
   "name": "PANEL ROCKER SW STOP",
   "description": "Panel Rocker Switch - Stop / Reset",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 7,
   "name": "CHW LIQ PUMP STAT",
   "description": "Chilled Liquid Pump Start Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 8,
   "name": "COND LIQ PUMP STAT",
   "description": "Condenser Liquid Pump Start Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 9,
   "name": "CHW FLOW SWITCH STAT",
   "description": "Chilled Liquid Flow Switch Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 10,
   "name": "COND LIQ FLOW SW STAT",
   "description": "Condenser Liquid Flow Switch Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 11,
   "name": "COND REFRIG HI PRESS CO",
   "description": "Condenser Refrigerant High Pressure Cutout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 12,
   "name": "COMP OIL HEATER CONT",
   "description": "Compressor Oil Heater Contactor",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 13,
   "name": "COMP OIL RETURN SOL VLV",
   "description": "Compressor Oil Return Solenoid Valve",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 14,
   "name": "COMP OIL COOLER W SOL VL",
   "description": "Compressor Oil Cooler Water Solenoid Valve",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 15,
   "name": "COMP VAR SPD OIL PMP RUN",
   "description": "Compressor Variable Speed Oil Pump Run Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 16,
   "name": "COMP VAR SPD OIL PMP AUX",
   "description": "Compressor Variable Speed Oil Pump Auxiliary Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 17,
   "name": "COMPR LIQ INJ SOL VLV",
   "description": "Compressor Liquid Injection Solenoid Valve",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 18,
   "name": "COMPR HS THRUST SOL",
   "description": "Compressor High Speed Thrust Solenoid",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 19,
   "name": "CLOSED LIMIT SWITVH",
   "description": "Closed Limit Switch",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 20,
   "name": "REM MODE READY TO START",
   "description": "Remote Mode Ready To Start Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 22,
   "name": "TURBINE ROTATING CONT",
   "description": "Turbine Rotating Contacts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 23,
   "name": "TURBINE TRIP SOL VLV",
   "description": "Turbine Trip Solenoid Valve",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 24,
   "name": "TURBINE TRIP VLV CLO LS",
   "description": "Turbine Trip Valve Closed Limit Switch",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 1,
   "name": "UNIT OPERATION CODE",
   "description": "Unit Operation Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "UNIT SAFETY FAULT CODE",
   "description": "Unit Safety Shutdown Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 3,
   "name": "UNIT CYCLING FAULT CODE",
   "description": "Unit Cycling Shutdown Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 4,
   "name": "UNIT WARNING FAULT CODE",
   "description": "Unit Alarm / Warning Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 5,
   "name": "UNIT CONTROL SOURCE",
   "description": "Unit Control Source",
   "units": "",
   "access": "R",
   "states": "0=Local, 1 = ISN, 2= Analog, 3 = Digital, 4 = Modem"
  },
  {
   "type": "MV",
   "instance": 6,
   "name": "TURBINE STATUS CODE",
   "description": "TurbineStatus Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 7,
   "name": "UNIT MODIF RUN FLT CODE",
   "description": "Unit Modified Run Fault Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 8,
   "name": "UNIT INHIBIT FAULT CODE",
   "description": "Unit Inhibit Fault Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 9,
   "name": "UNIT INTERNAL FAULT CODE",
   "description": "Unit Internal Fault Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 30,
   "name": "THRUST BEARING PROX POS",
   "description": "High Speed Thrust Bearing Proximity Position",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "THRUST BEARING PROX REF",
   "description": "High Speed Thrust Bearing Proximity Reference",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 32,
   "name": "TURBINE GOV END BRG TEMP",
   "description": "Turbine Governor End Bearing Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 33,
   "name": "TURBINE SHF END BRG TEMP",
   "description": "Turbine Shaft End Bearing Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 34,
   "name": "HOTWELL CONDENSATE LVL",
   "description": "Hotwell Condensate Level",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 35,
   "name": "EVAP REFRIG LIQ TEMP",
   "description": "Evaporator Refrigerant Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 36,
   "name": "COND REFRIG LIQ TEMP",
   "description": "Condenser Refrigerant Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "CHILL LIQ FLOW SENSOR",
   "description": "Chilled Liquid Flow Sensor (GPM)",
   "units": "gpm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 38,
   "name": "COND LIQ FLOW SENSOR",
   "description": "Condenser Liquid Flow Sensor (GPM)",
   "units": "gpm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 39,
   "name": "STEAM FLOW SENSOR",
   "description": "Steam Flow Sensor (lb/hr)",
   "units": "lb/hr",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 40,
   "name": "HOTGAS BYPASS VLV POS",
   "description": "Hotgas Bypass Valve Position",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "GOVERNOR VLV POS",
   "description": "Governor Valve Position",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 43,
   "name": "SLOW ROLL TIME REMAINING",
   "description": "Slow Roll Time Remaining",
   "units": "min",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 26,
   "name": "TURBINE AUX OIL PMP CONT",
   "description": "Turbine Auxiliary Oil Pump Contactor",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 27,
   "name": "TURBINE AUX OIL PMP CONA",
   "description": "Turbine Auxiliary Oil Pump Contactor Auxiliary Contact",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 28,
   "name": "TURBINE OIL CLRW SOL VLV",
   "description": "Turbine Oil Cooler Water Solenoid Valve",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 29,
   "name": "ALARM HORN",
   "description": "Alarm Horn",
   "units": "",
   "access": "R",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/york/yst-e-link",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}