{
 "manufacturer": "York",
 "manufacturer_slug": "york",
 "model": "YR Screw Chiller (OptiView, SC-EQ)",
 "model_slug": "yr-sc-eq",
 "short_model": "YR",
 "aliases": [
  "YORK YR",
  "YR OptiView",
  "YR chiller",
  "SC-EQ",
  "SE-SCC1001-1"
 ],
 "equipment_type": "Water-cooled screw chiller (via SC-EQ card)",
 "applies_to": "YORK YR water-cooled screw chillers with OptiView controls, fitted with the SC-EQ communication card.",
 "summary": "YR screw chillers with OptiView controls reach a BAS through the SC-EQ communication card on BACnet MS/TP (or Modbus RTU / N2). The BAS can run/stop the chiller and write the leaving chilled liquid setpoint and motor current limit. Read-only points cover water temperatures, refrigerant and oil pressures, slide valve position, solid-state starter values, and multistate operation, safety, cycling and warning codes.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "SC-EQ software 4.3.0.x",
 "default_device_instance": "5000 + MAC address",
 "access_inferred": true,
 "notes": [
  "Access is inferred: the sheet has no read/write column. The remote block (AV 1-2, BV 1) is treated as commandable and MV 65001 as writable; everything else as read-only.",
  "Starter values (AV 13-18) only report with a solid-state starter (SSS).",
  "The doc notes that AV 25's label is off: the value is the refrigerant level position.",
  "Status-code MVs (MV 1-4) are the printed code + 1, as the doc's status code tables say. MV 5 and MV 65001 are shown as printed, from 0; BACnet multistate values start at 1, so the card may report the printed number + 1. Confirm by discovery.",
  "Units shown are the IP units; with MV 65001 set to SI the card reports °C, kPa and so on.",
  "Spare objects and empty rows are left out."
 ],
 "source": {
  "title": "YR (OptiView) SC-EQ BAS Points List",
  "doc_number": null,
  "revision_date": "Rev 1.2, 2021-12-15",
  "url": "https://docs.johnsoncontrols.com/chillers/api/khub/documents/ISru5gO~hseNJRaG8uHiHg/content"
 },
 "integration": {
  "summary": "Wire the BAS to the SC-EQ J12 RS-485 port and set the MAC address; the card detects BACnet MS/TP. Run/stop the chiller with BV 1 and write the leaving chilled liquid setpoint (AV 1) and motor current limit (AV 2). Read MV 1, BV 5, the leaving water temperature and % FLA, and MV 2/MV 3 for shutdowns.",
  "minimum_points": [
   {
    "ref": "BV 1",
    "name": "REM RUN STOP CMD",
    "why": "Remote run/stop (1 = run)"
   },
   {
    "ref": "AV 1",
    "name": "REM LEAVING CHL TEMP SP",
    "why": "Remote leaving chilled liquid setpoint"
   },
   {
    "ref": "AV 2",
    "name": "MOTOR CURRENT REMOTE SP",
    "why": "Remote motor current limit, %"
   },
   {
    "ref": "MV 1",
    "name": "UNIT OPERATION CODE",
    "why": "Operating state (stopped, starting, running)"
   },
   {
    "ref": "BV 5",
    "name": "COMPR MOTOR STATUS",
    "why": "Compressor motor running"
   },
   {
    "ref": "MV 5",
    "name": "UNIT CONTROL SOURCE",
    "why": "Control source; ISN (BAS) for BMS control"
   },
   {
    "ref": "AV 5",
    "name": "LEAVING CH LIQ TEMP",
    "why": "Leaving chilled liquid temperature"
   },
   {
    "ref": "AV 12",
    "name": "MOTOR CURRENT PCT FLA",
    "why": "Motor current, % FLA (load indication)"
   },
   {
    "ref": "MV 2",
    "name": "UNIT SAFETY FAULT CODE",
    "why": "Safety shutdown code (1 = none)"
   },
   {
    "ref": "MV 3",
    "name": "UNIT CYCLING FAULT CODE",
    "why": "Cycling shutdown code (1 = none)"
   }
  ],
  "enable": "BV 1 REM RUN STOP CMD (0 = Stop, 1 = Run) is the BAS run/stop and AV 1-2 the remote setpoints. MV 5 shows the control source (Local, ISN, Analog, Digital, Modem); it should read ISN for BAS control. The points list has no write-enable point.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "The BAS connects to the SC-EQ J12 port (RS-485: +, -, COM/REF, SHLD). The card detects BACnet MS/TP, Modbus RTU or N2 and the baud rate by itself; allow up to 120 seconds after power-up.",
   "The MAC address (1-127) is set on DIP switch SW1 (switch 8 unused). Cycle the card's power after changing it.",
   "The device instance defaults to 5000 + the MAC address (MAC 6 gives 5006). To use another number, set Device Instance Mode to Manual and enter the instance with the SC-AP / MAP tool, or write BV 65000 (mode) and AV 65000 (instance ID).",
   "MV 65001 Units sets whether the BAS sees IP or SI values, independent of the chiller display; set it to match the chiller."
  ],
  "gotchas": [
   "The remote (commandable) setpoints read as unreliable until the BAS writes them the first time.",
   "The SC-EQ only exposes the points that apply to the chiller it detects; if it replaces an E-Link, re-discover the device so old non-applicable points don't sit offline."
  ]
 },
 "points": [
  {
   "type": "AV",
   "instance": 1,
   "name": "REM LEAVING CHL TEMP SP",
   "description": "Remote Leaving Chilled Liquid Setpoint",
   "units": "°F",
   "access": "C",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "MOTOR CURRENT REMOTE SP",
   "description": "Motor Current Limit Setpoint",
   "units": "%",
   "access": "C",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "REM RUN STOP CMD",
   "description": "Remote Run/Stop",
   "units": "",
   "access": "C",
   "states": "0=Stop, 1=Run"
  },
  {
   "type": "MV",
   "instance": 65001,
   "name": "Units",
   "description": "Unit system reported by the SC-EQ",
   "units": "",
   "access": "W",
   "states": "0=IP (English), 1=SI (Metric)"
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "LEAVING CH LIQ TEMP",
   "description": "Leaving Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "ENTERING CH LIQ TEMP",
   "description": "Return Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "EVAPORATOR PRESSURE",
   "description": "Evaporator Pressure",
   "units": "PSIG",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 8,
   "name": "CONDENSER PRESSURE",
   "description": "Condenser Pressure",
   "units": "PSIG",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "OIL PRESSURE DIFERENTIAL",
   "description": "Oil Pressure Differential",
   "units": "PSIG",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "ENTERING COND WATER TEMP",
   "description": "Return 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": "MOTOR CURRENT PCT FLA",
   "description": "Motor Current Percent FLA",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "PHASE A MOTOR CURRENT",
   "description": "SSS Phase A Current (SSS only)",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "PHASE B MOTOR CURRENT",
   "description": "SSS Phase B Current (SSS only)",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 15,
   "name": "PHASE C MOTOR CURRENT",
   "description": "SSS Phase C Current (SSS only)",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "PHASE A_B LINE VOLTS",
   "description": "SSS Phase A Voltage (SSS only)",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "PHASE B_C LINE VOLTS",
   "description": "SSS Phase B Voltage (SSS only)",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "PHASE C_A LINE VOLTS",
   "description": "SSS Phase C Voltage (SSS only)",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "LEAVING CHW TEMP ACT SP",
   "description": "Leaving Chilled Liquid Setpoint - Selected",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "MOTOR CURRENT ACTUAL SP",
   "description": "Motor Current Limit Setpoint - Selected",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "EVAP SATURATION TEMP",
   "description": "Evaporator Saturation Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "COND SATURATION TEMP",
   "description": "Condenser Saturation Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "DISCHARGE TEMP",
   "description": "Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "COND REFRIGERANT LEVEL",
   "description": "Condenser refrigerant level (doc: really refrigerant level position)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 26,
   "name": "ACCUM OPERATING HOURS",
   "description": "Unit Operating Hours",
   "units": "Hr",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "ACCUM SYSTEM STARTS",
   "description": "Unit System Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "COMPR MOTOR STATUS",
   "description": "Motor Run Contacts",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 6,
   "name": "OIL RETURN SOLENOID",
   "description": "Oil Return Solenoid",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 7,
   "name": "CHW PUMP STAT",
   "description": "Chilled Liquid Pump",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 8,
   "name": "STOP SWITCH STATUS",
   "description": "Panel stop switch (start enabled / stop)",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 9,
   "name": "CHW FLOW SWITCH STAT",
   "description": "Chiller Liquid Flow Switch",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 11,
   "name": "LOW SEPARATOR OIL SWITCH",
   "description": "Low Separator Oil Switch",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 24,
   "name": "ICE STORAGE MODE",
   "description": "Ice Storage Mode",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "MV",
   "instance": 1,
   "name": "UNIT OPERATION CODE",
   "description": "Operation Code",
   "units": "",
   "access": "R",
   "states": "1=Unit Stopped - Ready To Start, 2=Unit Stopped - Local Shutdown, 3=Unit Stopped - Remote Shutdown, 4=Unit Stopped - Warning Active, 5=Unit Stopped - Cycling Shutdown, 6=Unit Stopped - Safety Shutdown, 7=Unit Start Inhibit, 8=Unit Starting, 9=Unit Running - No Abnormal Condition, 10=Unit Running - Warning Active, 11=Unit Running - Chiller Unload Before Shutdown, 12=Unit Lockout Delay, 13=Unit Running - Modified Run, 14=Unit Stopped - Internal Shutdown"
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "UNIT SAFETY FAULT CODE",
   "description": "Unit Safety Fault Code",
   "units": "",
   "access": "R",
   "states": "1=No Abnormal Condition, 2=Evaporator - Low Pressure, 3=Evaporator - Transducer Or Leaving Liquid Probe, 4=Evaporator - Temperature Transducer, 5=Condenser - High Pressure Contacts Open, 6=Condenser - High Pressure, 7=Condenser - Pressure Transducer Out Of Range, 8=Auxiliary Safety - Contacts Closed, 9=Discharge - Low Temperature, 10=Discharge - High Temperature, 11=Oil - High Temperature, 12=Oil - Low Differential Pressure, 16=Oil- High Pressure, 17=Oil- Filter Clogged, 22=Control Panel - Power Failure, 24=Motor Or Starter - Current Imbalance, 25=Thrust Bearing - Proximity Probe Clearance, 26=Thrust Bearing - Proximity Probe Uncalibrated, 27=Thrust Bearing - Proximity Probe Out Of Range, 28=High Oil Temperature, 29=Oil Temperature Probe - Out of Range, 30=VSD - High Heatsink Temperature, 31=VSD - 105% Motor Current Overload, 32=VSD - High Phase A Inverter Heatsink Temperature, 33=VSD - High Phase B Inverter Heatsink Temperature, 34=VSD - High Phase C Inverter Heatsink Temperature, 35=VSD - High Converter Heatsink Temperature, 36=VSD - Precharge Lockout, 37=Harmonic Filter - High Heatsink Temperature, 38=Harmonic Filter - High Total Demand Distortion, 39=LCSSS - Phase Rotation, 40=LCSSS - Motor Or Starter - Current Imbalance, 41=LCSSS - 105% Motor Current Overload, 42=LCSSS - High Instantaneous Current, 43=LCSSS - Open SCR, 44=LCSSS - Shorted Phase A SCR, 45=LCSSS - Shorted Phase B SCR, 46=LCSSS - Shorted Phase C SCR, 47=LCSSS - High Phase A Heatsink Temperature - Running, 48=LCSSS - High Phase B Heatsink Temperature - Running, 49=LCSSS - High Phase C Heatsink Temperature - Running, 50=Starter - Invalid Motor Selection, 51=Oil Or Condenser Transducer Error, 52=Evaporator - Low Pressure, 53=Evaporator - Low Pressure - Smart Freeze, 54=Surge Protection - Excess Surge, 55=VSD - High Inverter Baseplate Temperature, 56=Harmonic Filter - High Baseplate Temperature, 57=Thrust Bearing - Proximity Probe Clearance, 58=Thrust Bearing - Limit Switch Open, 59=Motor - Phase Rotation, 60=Motor - High Temperature, 61=Discharge - High Pressure, 62=High Motor Winding Temperature, 63=High Motor Bearing Temperature, 64=VSD - High Phase A Baseplate Temperature, 65=VSD - High Phase B Baseplate Temperature, 66=VSD - High Phase C Baseplate Temperature, 67=VSD - Current Imbalance, 68=Condenser high Pressure Stopped, 69=Motor - Ground Fault, 70=Excessive Bearing Vibration, 71=Low Discharge Superheat, 72=LCSSS - Phase A Open SCR, 73=LCSSS - Phase B Open SCR, 74=LCSSS - Phase C Open SCR, 75=Motor Lube Not Done, 76=VSD - Low Frequency"
  },
  {
   "type": "MV",
   "instance": 3,
   "name": "UNIT CYCLING FAULT CODE",
   "description": "Unit Cycling Fault Code",
   "units": "",
   "access": "R",
   "states": "1=No Abnormal Condition, 2=Multi-Unit Cycling - Contacts Open, 3=System Cycling - Contacts Open, 5=Oil - Low Temperature, 6=Control Panel - Power Failure, 7=Leaving Chilled Liquid - Low Temperature, 8=Leaving Chilled Liquid - Flow Switch Open, 9=Condenser - Flow Switch Open, 10=Motor Controller - Contacts Open, 11=Motor Controller - Loss Of Current, 12=Power Fault, 13=Control Panel - Schedule, 14=Starter - Low Supply Line Voltage, 15=Starter - High Supply Line Voltage, 16=Proximity Probe - Low Supply Voltage, 17=Oil - Variable Speed Pump - Drive Contacts Open, 18=VSD Initialization Failed, 19=VSD Shutdown - Requesting Fault Data…, 20=VSD - High Phase A Instananeous Current, 21=VSD - High Phase B Instananeous Current, 22=VSD - High Phase C Instananeous Current, 23=VSD - Phase A Gate Driver, 24=VSD - Phase B Gate Driver, 25=VSD - Phase C Gate Driver, 26=VSD - Single Phase Input Power, 27=VSD - High DC Bus Voltage, 28=VSD - Logic Board Power Supply, 29=VSD - Low DC Bus Voltage, 30=VSD - DC Bus Voltage Imbalance, 31=VSD - High Internal Ambient Temperature, 32=VSD - Invalid Current Scale Selection, 33=VSD - Low Phase A Inverter Heatsink Temperature, 34=VSD - Low Phase B Inverter Heatsink Temperature, 35=VSD - Low Phase C Inverter Heatsink Temperature, 36=VSD - Low Converter Heatsink Temperature, 37=VSD - Precharge - DC Bus Voltage Imbalance, 38=VSD - Precharge - Low DC Bus Voltage, 39=VSD - Logic Board Processor, 40=VSD - Run Signal, 41=VSD - Serial Communications, 42=VSD - Stop Contacts Open, 43=Harmonic Filter - Logic Board Or Communications, 44=Harmonic Filter - High DC Bus Voltage, 45=Harmonic Filter - High Phase A Current, 46=Harmonic Filter - High Phase B Current, 47=Harmonic Filter - High Phase C Current, 48=Harmonic Filter - Phase Locked Loop, 49=Harmonic Filter - Precharge - Low DC Bus Voltage, 50=Harmonic Filter - Low DC Bus Voltage, 51=Harmonic Filter - DC Bus Voltage Imbalance, 52=Harmonic Filter - 110% Input Current Overload, 53=Harmonic Filter - Logic Board Power Supply, 54=Harmonic Filter - Run Signal, 55=Harmonic Filter - DC Current Transformer 1, 56=Harmonic Filter - DC Current Transformer 2, 57=LCSSS Initialization Failed, 58=LCSSS Shutdown - Requesting Fault Data…, 59=LCSSS - Low Phase A Temperature Sensor, 60=LCSSS - Low Phase B Temperature Sensor, 61=LCSSS - Low Phase C Temperature Sensor, 62=LCSSS - Phase Locked Loop, 63=LCSSS - Power Fault, 64=LCSSS - High Supply Line Voltage, 65=LCSSS - Low Supply Line Voltage, 66=LCSSS - Invalid Current Scale Selection, 67=LCSSS - Run Signal, 68=LCSSS - Serial Communications, 69=LCSSS - Stop Contacts Open, 70=LCSSS - Invalid FLA, 71=LCSSS - Logic Board Processor, 72=LCSSS - DSP Communication Failure, 73=LCSSS - Logic Board Power Supply, 74=VSD - Serial Communications, 75=LCSSS - Serial Communications, 76=LCSSS - Phase Loss, 77=VSD - Low Inverter Baseplate Temperature, 78=Motor High Winding Temperature, 79=VSD - Low Phase A Baseplate Temperature, 80=VSD - Low Phase B Baseplate Temperature, 81=VSD - Low Phase C Baseplate Temperature, 82=SSS Shutdown - Requesting Fault Data…"
  },
  {
   "type": "MV",
   "instance": 4,
   "name": "UNIT WARNING FAULT CODE",
   "description": "Unit Warning Fault Code",
   "units": "",
   "access": "R",
   "states": "1=No Abnormal Condition, 2=Real-Time Clock Failure, 3=Setpoint Override, 4=Condenser Or Evaporator Transducer Error, 5=Evaporator - Low Pressure Limit, 6=Condenser - High Pressure Limit, 7=Condenser Transducer Error, 8=Freeze Threat From Operating Chiller, 9=Refrigerant Level Out Of Range, 10=Standby Lube - Low Oil Pressure, 11=Purge - High Pressure, 12=Purge - Float Switch Error, 13=Purge - Excess Purge, 14=Oil - High Temperature, 15=Oil - Low Pressure Limit, 16=Vanes Uncalibrated, 17=Vanes Uncalibrated - Fixed Speed, 18=Harmonic Filter - Operation Inhibited, 19=Harmonic Filter - Data Loss, 21=Oil - Dirty Filter, 22=Discharge - High Pressure Limit, 24=Low Discharge Superheat Limit, 25=Low Discharge Superheat Detected, 26=Seal Lubrication In Process, 27=External I/O - Serial Communications, 28=Slide Valve Uncalibrated, 29=Freeze Threat - Condenser Flow Switch, 30=Surge Protection - Excess Surge Limit, 31=Excess Surge Detected, 32=Purge - Canister #1 Full, 33=Oil Recovery Limit, 34=KW Meter Not Calibrated, 35=VGD or Condenser Sensor, 36=VGD - Extreme Stall, 37=Motor Lube Suggested, 38=Motor Lube Required"
  },
  {
   "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": "AV",
   "instance": 35,
   "name": "ANTI RECYCLE TIME REMAIN",
   "description": "Anti-Recycle Time Remaining",
   "units": "Min",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "SEAL PRESS DIFFERENTIAL",
   "description": "Seal Pressure Differential",
   "units": "PSID",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 38,
   "name": "FILTER DIFF PRESSURE",
   "description": "Filter Pressure Differential",
   "units": "PSID",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "MIN LOAD CTL MTR FLA LIM",
   "description": "Minimum Load Control Motor FLA Limit",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 42,
   "name": "SLIDE VALVE POSITION",
   "description": "Slide Valve Position",
   "units": "%",
   "access": "R",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/york/yr-sc-eq",
 "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"
}