Alarm Relay #2 Load, AC Load, Relay Load Power | Honeywell UDC 3300

Time proportional output, continued

Figure 2-9 shows the Output and Alarm wiring connections for models with Solid State Relay Output (Model DC330X-AA-XX).

For Control and Alarm Relay Contact information, see Tables 2-7 and 2-8.

Figure 2-9 Solid State Relay Output—Model DC330X-AA-XX

Time Proportional Simplex

1

L1	Output	2
L2/N	Relay#1	N.O.	Relay Load
L2/N	Relay#1	3	Relay Load
22		4	Dummy Resistor	1
		N.C.

	AC Load
3	Supply
	Power

23	Alarm	5	Alarm Relay #2 Load
23	Relay#2	5	Alarm Relay #2 Load
		N.O.
24		6	To terminal
25		7	4 or 6
25		7

4

AC Load

Supply

Power

		Alarm	N.C.	Alarm Relay #1 Load
	26	Alarm	8	Alarm Relay #1 Load
	26	Relay#1	8
	27		N.O.
	27		9	To terminal
				To terminal
				7 or 9

Time Proportional Duplex

4

AC Load

Supply

Power

			1
	L1	Output	2			AC Load
	L1	Output	2		3	Supply
		Relay#1	N.O.	Relay Load	3	Supply
	L2/N	Relay#1	3	Relay Load		Power
	22		4	Dummy Resistor	1	AC Load
	23	Output	5			AC Load
	23	Output	5	2	3	Supply
		Relay#2	N.O.	2	3	Supply
	24	Relay#2	6	Relay Load		Power
	24		6	Relay Load		Power
	25		7	Dummy Resistor	1
		Alarm	N.C.	Alarm Relay #1 Load		AC Load
	26	Alarm	8			AC Load
	26	Relay#1	8			Supply
		Relay#1	N.O.			Supply
	27		9	To terminal	4	Power
				To terminal	4
				7 or 9

1If the load current is less than the minimum rated value of 20 mA, there may be a residual voltage across both ends of the load even if the relay is turned off. Use a dummy resistor as shown to counteract this. The total current through the resistor and the load current must exceed 20 mA.

2Alarm #2 not available with Time Proportional Duplex or Three Position Step Control or Position Proportional control.

3Solid State relays are rated at 0.5 amps. Customer should size fuses accordingly. Use Fast Blo fuses only.

4Electromechanical relays are rated at 5 Amps @120 Vac or 30 Vdc and 2.5 Amps at 240 Vac. Customer should size fuses accordingly. Use Fast Blo fuses only.

WARNING: Only connect Vac to solid state relays.	24164
WARNING: Only connect Vac to solid state relays.

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UDC 3300 Controller Product Manual

23

Image 35

Honeywell UDC 3300 manual Alarm Relay #2 Load, Relay Load Power, Alarm Relay #1 Load AC Load

Contents

51-52-25-55D UDC Universal Digital Controller Product Manual Revision D April Honeywell West Spring Street Freeport, Illinois World Wide Web AbstractReferences Contacts Symbol Definition Symbol Definitions Table of Contents Operation Configuration Prompt Definitions147 205 271 219233 243 DC330X-EE-XXX-X2, DC330X-AA-XXX-X2 Figures Tables 154 246 Xii UDC 3300 Controller Product Manual Offered in a 1/4 DIN size controller Pharmaceuticals, and testing and environmental workConfigurable parameters Introduction UDC 3300 Controller Product Manual Operator Interface Operator Interface Displays and Indicators Loop 1/2 Function of keys OTI KeySPn ToBEGIN UDC 3300 Controller Product Manual Topic See OverviewIntroduction What’s in this section? Design SpecificationsStray Rejection Common Mode Normal Mode Open Collector Outputs One or Two Current Output IsolatedElectromechanical Relays One or Two Solid State Relays One or Two RTU Power Consumption Power Inrush Current WeightDmcs RS422/485 Ascii RS422/485 Modbus Voltage Vdc Voltage Vac 90 to 240 Vac 24 Vac Frequency Hz Environmental and Operating ConditionsMechanical Shock Model number Model Number Interpretation Mounting Physical considerations Overall dimensionsDimensions Controller Refer to -3 and follow the procedure in -2 to mountMounting procedure Step Procedure for Mounting the Controller Action Electrical considerations WiringControl/alarm circuit wiring Electrical Noise Precautions Identify your wiring requirements Shows which wire functions should be bundled togetherPermissible wire bundling Permissible Wiring Bundling Bundle No Wire Functions Controller accordingly Using the information contained in the model number, selectWiring the controller Wiring Requirements Wiring Diagrams Due to the voltage drop caused by the in-rush current Line voltage wiringController 4 mm2 Volts Milliamps Input #1/Input #2 connectionsThermocouple MV or Volts Except 0-10 Volts 22 + 23 + Two Hlai replace second Llai connectionsHigh Level Analog Input Connections See Below 5V Connections MA Connections Electromechanical Relay Output-Model DC330X-EE-XXX L2/N PowerAlarm Relay #1 Load Time proportional output AC Load Alarm Relay #2 LoadRelay Load Power Alarm Relay #1 Load AC Load 10 10-amp Solid State Relay Output-Model DC330X-SS-XX Time Proportional Simplex Ohms Output or Alarm LoadCurrent output/ universal output connections Controller Load L2/N Relay #1 16 +Output Type Current Connect shield to ground At one end only Position proportional output connectionsCalibration Mechanically linked To motor Digital inputs connections Auxiliary output connectionsAuxiliary Load 1000 Ω Do not mix half Full duplex wiringMaster L2/N TX-/RX Resistor Master120 Ohm Configure Voltage at transmitter Zero VAL = Span VAL =+16 26 + 250 ohm Resistor Diode here to reduce Lists the Control Relay contact information Control and Alarm Relay Contact InformationLists the Alarm Relay contact information Prompts Continuous background tests that are being performedIntroduction Topic TOT Rate * x = 0 to Configuration PromptsDiagram prompt hierarchy Input Parameter explanations or definitions How To Get StartedConfiguration record sheet Configuration Tips Configuration Tips Press Configuration ProcedureIntroduction Procedure Configuration Procedure Step Operation Step Operation SET UP Lower Display Function Prompt Loop 1 Tuning Parameters Set Up GroupFactory Setting Function prompts Function Name Selections or Range of SettingDisabl Enable Function Selections or Name Range of Setting Loop 2 Tuning Parameters Set Up Group Cascade or Two LoopsTuning Loop 2 Group Function Function prompts Function Prompt SP Ramp, SP Rate, or SP Programming Set Up GroupLists all the function prompts in the SP Ramp Set Up group Setpoint rate SEG5RATE SEG6 SP SEG6TIME Recycles Soak DEV Prog END State Keyreset HotstartSEG1RATE SEG2 SP SEG2TIME SEG3RATE SEG4 SP SEG4TIME Accutune Set Up Group Function Selections or Lists the function prompts in the Accutune Set Up groupFactory Refer Setting Accutune Group Function Prompts Algorithm Group Function Prompts Algorithm Data Set Up GroupIntroduction Function prompts PCO SEL PCT CO ATM Pres ALG1BIAS INP ALG2 INP ALG1None Math K Calc HI Calc LO ALG1 INA ALG1 INB ALG1 INC ALG2 INC Factory Setting ReferALG2 INA ALG2 INB Totalize Xxxxxxx TOT Scal TOT SEC Rset ? TOT Rate OUT2 ALG Rlystate Output Algorithm Parameters Set Up GroupOutput Algorithm Group Function Prompts OUT ALG Analytic IN1 HI IN1 LO Ratio Input 1 Parameters Set Up GroupInput 1 Group Function Prompts Selections or IN1 Type XMITTER1 None Down Nofs Bias IN1Filter BURNOUT1 Input 2 Parameters Set Up Group Input 3 Group Function Selections or Range of Setting Input 3 Parameters Set Up Group 12 Control Group Function Prompts Selections or Loop 1 Control Parameters Set Up GroupProcess MAN OUT Auto OUT OUT RatePCT/M UP PCT/M DN Dropoff Deadband OUT Hyst Failmode Failsafe Swfail INP Loop 2 Control Parameters Set Up Group13 Control 2 Group Function Prompts Dropoff Deadband Failmode Failsafe OUT Rate PCT/M UP PCT/M DNOUTHiLIM OUTLoLIM HiLIM I LoLIM AUX OUT CUR OUT2 Options Set Up GroupPrompts will not appear Options Group Function Prompts None Disabl DIG1 COM DIG2 COM+DISAT +RUN Duplex Communications Set Up Group15 Communications Group Function Prompts Shedenab Shedtime Parity Baud Last To LSP Percnt Disabl Fsafe To MAN To LSP To CSP Percnt ENG A1S1 VAL A1S2 VAL A2S1 VAL A2S2 VAL Alarms Set Up Group A1S2 H L A1S1TYPE A1S2TYPE A2S1TYPE A2S2TYPEA1S1 H L A1S1 EV A2S2 EV AL Hyst ALM OUT1 Block A2S1 H LA2S1 EV A2S2 H L DECIMAL2 Display Parameters Set Up GroupDisplay Group Function Prompts Decimal Calibration data Calibration Group Elapsed Time Timer Maintenance Set Up GroupOthers, to keep track of maintenance needs Maintenance Group Function Prompts Disabl None Counter Number of Counts Password Reset TypeStatus Group Status test data Keep a record Configuration Record Sheet Function Value or Prompt Selection Value or Selection Factory SettingGroup Prompt Expanded Model DC330E-XX-XXX Value or Selection Control CONTROL2 Options UDC 3300 Process Controller Product Manual Configuration Prompt Definitions Parameter Definition Introduction Set this group last Tuning group promptsTuning Group Prompt Definitions Lower Display Upper Display Range of Setting Or Selection Rset MIN Rset RPM MAN Rset PROPBD2 Gain Lower Display Prompt Security Lockout Auto MAN SP SEL RUN Hold None Calib + Conf + View MAX Disabl EnableConfigure Until ALL Configuration is Complete Gain PV band over which each Value Gain applies Loop 2 Tuning Group Prompt Lower Display Loop 2 Tuning Parameters Set Up GroupIntroduction Tuning 2 group prompts Setpoint Ramp/Rate Group Definitions Lower Display Prompt Setpoint Ramp/Rate/Programming Set Up GroupIntroduction SP Ramp/Rate/ Programming group prompts EU/HR UP EU/HR DN EU/HRUP2 Final SP SP Rate EU/HRDN2 SP Prog Or Selection Accutune Group Definitions Lower Display Prompt Introduction Accutune group prompts Accutune for Loop Demand Tuning Plus PV Adaptive TUNE- SameSetpoint Tuning Plus PV Adaptive TUNE- Same Disabl Tune TUN+PV SP+PV Criteria CRITERA2 KPG SP CHAN2 Runing None Outlim Idfail Abort LOW PV AT Error AT ERRRead Only Algorithm Group Definitions Lower Display Prompt Introduction Algorithm group prompts PID a PID B 3PSTEP Loop 2LOOPS Cascad ALGPidloops PID a PID B PD+MR Disabl HI SEL LO SEL None AVG Timer Period Start DispKEY ALARM2 TI REM Time Multiplier with Square ROOT- The following RelhumSummer with Ratio and BIAS- The following Input High Select with Ratio and BIAS- This Math K Calc HI Calc LO Carb B Carb C Carb D FCC DEW PT Oxygen For Example DisabledINP LP1OUT LP2OUT AL1 AL2 None Disabl Online  Mult Lower Display Upper Display Prompt Range of SettingFWR2 FFWDM2 PCT H2 ALG2BIAS Where Flow Sfcm Summary of Flow Values At Values Conditions X2 Input Value X Axis 8SEG CH1X0 Input Value X Axis X1 Input Value X Axis X0 VALU2 Segment Characterizer #2- a second eight Example of Eight Segment Characterizer Read only Totalize Xxxxxxx TOT Scal TOT SEC Rset ?Unlock Lock YES Second Minute Hour DAY ML/DAY Time Currnt Positn Time D Introduction Output algorithm group promptsOutput Algorithm Group Definitions Lower Display Prompt Other prompts affected 4-20 RNG CUR D CUR TI TI CUR OUT2 ALG Rlystate RLY Type Input 1 Group Definitions Upper Display Parameter Range of Setting DefinitionBias, filter, burnout, and emissivity Input 1 group prompts Lower Display Prompt Resistivity Xmitter AnalyticORP Conductivity IN1 LO Ratio Bias IN1 Filter Burnout EMISSIV1 IN2 Type SlidewireIntroduction Input 2 group prompts Lower Display Prompt Input 2 Group Definitions XMITTER2 IN3 HI IN3 LO Ratio Bias IN3 Filter Introduction Input 3 group prompts Lower Display PromptInput 3 Group Definitions IN3 Type Input Algorithm Introduction Control group prompts Lower Display PromptPV Source PID Sets Input Setpoint Select PID Sets SW Value LSP’S2PV SW 2SP SW Gain S Three Manual LSP RSP RSP SRC Autobias SP Track OUT Rate PCT/M UP For Three Position Step Control OnlySP HiLIM Control Output DIRECTION- Select direct or reverse acting OUT Hyst Failmode Failsafe Swfail Failsafe ModeOUTLoLIM Hi LIM Lo LIM Dropoff RPM MIN PBorGAINPB PCT Gain Input Input Algorithm Force MA PID Sets Introduction Control 2 group prompts11 Control 2 Group Definitions Lower Display Prompt PV 2 SRC Only TWO Three RSP SRC Autobias Sptrack Hi LIM Lo LIM Revrse Disabl EnableOUT HiLIM OUT LoLIM 128 UDC 3300 Process Controller Product Manual No Auxiliary Output Selection with desired scalingOption group prompts Lower Display Prompt Options Group Definitions DEV Output LSP AL1 AL2 PV2 OUTPT2 SP L2 AUX OUT No Digital Input Selections CB OUT2None To MAN To LSP To 2SP To 3SP To DIR Stop MAN FS PV 2IN PV 3IN Rerun To RUN To RSP RST FB TRACK1 TRACK2 Digital Input 2 Selections DIG DIG 1 COMDIG DIG2 COM Any Digital Input Selection Plus RUN Setpoint Shed Enab Introduction Communications group prompts13 Communications Group Definitions Lower Display Prompt ComSTATE Com Addr ComADDR2 Even Parity Shedtime Parity Baud DuplexWsfloat Percnt ENG Last Toauto FsafeShed SP To LSP To CSP 138 UDC 3300 Process Controller Product Manual A1S1 VAL A1S2 VAL A2S1 VAL Introduction Alarms group prompts14 Alarms Group Definitions Lower Display Prompt Event on SP Programming Event OFF SP Programming No Alarm InputAlarm on Manual Mode Loop 1 Note A1S1TYPE Beginning of Segment END of Segment High Alarm LOW AlarmA1S2TYPE A2S1TYPE A2S2TYPE High LOW Begin END AL Hyst ALM OUT1 Block How to configure alarm to turn on and off with HealthWatch Decimal DECIMAL2 Temp Unit PWR Freq Ratio Introduction Display group prompts Lower Display PromptDisplay Group Definitions Input Calibration in this manual for complete information Maintenance GroupMaintenance Group Definitions Calibration Data Gsoak Sootng DIGIN1 DIGIN2 MAN2 TIME1 Complete information Failure. Refer to the Troubleshooting in this manual forCOUNTS1 COUNTER2 COUNTS2 COUNTER3 COUNTS3 Password RES Type Status Test Data Operation How to Power Up the Controller Key Pressed Lower Display Keys Procedure for Testing the Displays and Keys Press Until you see Introduction Security code numbers ProcedureStep Procedure for Entering a Security Code Press Action Entering a Security Code Decimal point position Monitoring Your ControllerOperator interface Annunciators Automatic Mode MAN-Manual ModeDegrees Fahrenheit Degrees Celsius BIA Tune OFF Tune RUN Viewing the operating parametersLower Display Key Parameter Error Messages Description Diagnostic error messages Setpoint Start-up ProcedureStart-up procedure is given in Table Enter the local Remote Setpoint Manual Cascade Automatic Cascade Available modes Mode definitionsOperating Mode Definitions Operating Modes Changing Operating Modes Mode Change What happens when you change modes SP 2SP 3SP RSP CSP Selecting manual or automatic mode Position proportional backup mode Introduction Selecting the local setpoint source Setpoints Hold Changing local setpoint 1, 2, or Setpoint selection indication Enabling or disabling the remote setpoint Setpoint Ramp Rate Configuration Operation SP Ramp Configuring the setpoint ramp Procedure14 Procedure for Configuring a Setpoint Ramp Step Operation Single Setpoint Ramp UDC 3300 Controller Product Manual 165 15 Procedure for Running a Setpoint Ramp Step Operation Running the setpoint ramp Procedure UDC 3300 Controller Product Manual 167 Introduction Select two sets or gain scheduling Using Two Sets of Tuning Constants RSET2 Set switchover valueSet tuning constant values for each set Rate Rset = 1 or Introduction Procedure for displaying the alarm setpoints Alarm Setpoints Loop Two Loops of Control OverviewIntroduction Selections 21 Control Loop Selections Input Input Algorithm Functional overview Loop 1 and Loop 2 of a dual loop controller Override rules Internal cascade Is a block diagram of the Hi/Lo Override Selector Model DC330E-KE-5XX Two-loop restrictions Select the output algorithm for each loop Configuring Two Loops of Control24 Procedure for Selecting 2-loop Algorithm Step Operation 25 Procedure for Selecting Output Algorithm Step Operation Select control parameters for each loop Procedure in -26 shows you how select the 2 loop algorithm 27 Procedure for Selecting Tuning Parameters Step Operation Procedure in -27 shows you how select the Tuning ParametersSelect tuning parameters for each group Loop Indication IndicatorMonitoring Two Loops of Control 28 Digital Display Indication-Two Loops Operating modes and setpoint source Keyboard operation Operating Two Loops of ControlLoop operation Accutune Tune will operate with this algorithm Power-up outputThree Position Step Control Algorithm Three Position Step Control algorithm Loop 1 only allows Introduction Input algorithm selections Input Math Algorithms Segment characterization Totalizer function Xn Value Yn Value Alarm on totalizer value Totalizer reset via digital input 30 Digital Input Option Action on Contact Closure Digital Input Option Remote SwitchingIntroduction Action on closure TRACK1 TRACK2 Timer AM STATo RUN Stop MAN FS Action on contact closure Means that the parameter is configured and the actionWill occur when the digital input is active Display Indication Digital Inputs 1 and 2 Combination Action Example State DI #1 Open DI #1 Closed Auto/Manual StationIntroduction Function Press To Enter Remarks Refer to -33 and set up the controller in the order shownDescription Configuration Up Group Function Prompts Options Step PressUp Group Function Prompts Press To Enter Remarks Value or Selection Algorithm Fuzzy Overshoot Suppression Introduction How it works Configuration Accutune 34 Accutune Rules and Regulations Applicable Rule How Tune demand tuning works34 is a list of rules for Accutune Rules Switch to Automatic mode by pressing the MANUAL/AUTO key Starting Tune demand tuning35 Procedure for Starting Tune Demand Tuning Step Action Setpoint changes Using Tune at start-up for duplex heat/cool MANUAL/AUTO Using SP tuning at start-up37 Procedure for Using SP Tuning at Start-up Step Action SP tuning after start-up Aborting SP tuning Using SP tuning at start-up for duplex heat/cool Key to return to manual mode. This will Values are entered and used until retuning occurs againRetuning Error prompt accessing procedure 39 Accutune* Error Prompt Definitions Action to Take 39 lists the Accutune error prompts and their definitionsError prompt Upper Display Prompt Carbon Potential Introduction Features UDC DiagramCarbon Potential Control HealthWatch When the desired threshold is reachedSee .18 Maintenance for details on using the various HealthWatch maintenance alarms What’s in this section What is programming? Review program data and configurationFill out the worksheet Program Contents UDC 3300 Controller Product Manual 207 Ramp unit Ramp/Soak Profile example Drawing a Ramp/Soak Profile Segment Value Prompt Program Record Sheet Entering the Setpoint Program Data Make sure SP Ramp and SP Rate are disabled firstSetpoint Program Data Entry Procedure Press Result Alarms on the setpoint program Prompt hierarchy Value or Selection use or Prompt Hierarchy and Available Selections SG11RAMP SG11RATE SG12 SP SG12TIME Definition Value or Selection use orSEG2 SP SEG2TIME SEG3RAMP SEG3RATE SEG8 SP SEG8TIME SEG9RAMP SEG9RATE SG10 SP SG10TIME Set the Local Setpoint Run/Monitor the ProgramIntroduction Run/monitor functions Local Setpoint Value # RA Viewing the number of cycles left in the program End Program Power-up state Result/Action Procedures for Changing a Running Setpoint Program Function 218 UDC 3300 Controller Product Manual Introduction What’s in this section Input Calibration IEC Alpha=0.00385 Ohms Ohms low Linear Minimum and Maximum Range ValuesHoneywell Radiamatic Type RH Type RI RTD Calibration steps Disconnect the field wiringPreliminary Information Equipment Needed Type of Input Equipment needed Input Input #1, #2, or #3 Set Up WiringThermocouple inputs using an ice bath Thermocouple inputs using a precision resistor RTD inputs Wiring Connections for RTD Volts only Input Radiamatic, millivolts, or volts except 0 to 10 volts inputs To 10 volt inputs Wiring Connections for 0 to 10 Volt Inputs Copper Leads To 20 mA Source Input 3-Wire terminals as shown belowTo 20 mA inputs 250Ω Resistor Assy From initial value to final 100 % value Input #1, #2, or #3 Calibration ProcedureInput #1, #2, or #3 Calibration Procedure Make sure you have Lockout set to NONE. See Section If… Then… Step Description Action/Result How to restore it ProcedureRestoring Factory Calibration Restoring Factory Calibration Step Operation Step Operation Press Output Calibration Equipment needed Calibrator connections Current Proportional Output CalibrationBetween 0 mA and 21 mA NONE. See Configuration Make sure Lockout in the Tuning Set Up group is set to Rules for auto mode vs manual mode Displayed values These prompts only appear when position OUT ALG is Procedure for calibrating the Position Proportional outputLockout in Tuning Set Up group is set to NONE. See Section Procedure Do MAN Do Auto orDo Auto Desired span value Lower Display SET UP Any other values between 0 mA and 21 mA Set Up Wiring Procedure for Auxiliary Output Step ActionAuxiliary Output Calibration Value between 0 Auxiliary Output Calibration Procedure Press Action 242 UDC 3300 Controller Product Manual Troubleshooting / Service Hardware and software related problems Installation related problemsApplication related problems Error Message Prompts Troubleshooting Aids Status Number Test failures Power-up TestsWhat happens at power-up Power-up Tests Upper Display RAM Test Conf Test CAL Test Fact CRC Introduction How to check the status testsStatus Tests Pass Status TestsRAM Test Conf CAL Test Fact CRC Fail INP1FAIL INP2FAIL INP3FAIL Background TestsIntroduction Background tests EE Fail RV = INP2 X Ratio + Bias Lower Display Reason for Failure How to Correct the ProblemINP1 RNG INP2 RNG INP3 RNG PV Limit RV Limit PV = INP1 + INP1 Bias Reacting Controller Failure SymptomsCompare your symptoms with those shown in -7 and refer to Troubleshooting procedure indicated to correct the problem How to do it Troubleshooting ProceduresEquipment needed Procedure #1 Troubleshooting Power Failure Symptoms Step What to do Procedure #2 Procedure #3 Procedure #4 Procedure #5 Procedure #6 13 explains how to troubleshoot Alarm Relay Output failure Procedure #7 14 explains how to troubleshoot a Keyboard failure Procedure #8 15 explains how to troubleshoot a Communications failure Introduction Equipment needed Parts Replacement Procedures 16 How to Remove the Chassis Step Action How to remove the chassis How to replace the display/keyboard assembly Refer to -2 and follow the procedure listed in Table 18 Printed Wiring Board Removal from Chassis Step Action How to remove the printed wiring boards from the chassis Prom Printed wiring board identificationOn Digital Input and MCU/Output boards MCU 2nd input board 19 Second Input Board Replacement Procedure Step ActionPower input board 20 Power Input Board Replacement Procedure Step Action Digital input board 21 Digital Input Board Replacement Procedure Step Action Aux.Out/ communications board MCU/output board 23 MCU/Output Board Replacement Procedure Step ActionCurrent Output-P/N Relay Output-P/N Cleaning Maintenance There is a list of parts not shown in Table Exploded View Description Quantity Parts identificationParts not shown Key Part Number Appendix a Manual Tuning Time, Position, or Current Proportional Simplex Control Manual Tuning Procedure for Simplex Control To Reduce Overshoot Manual Tuning Formulas Units Rsetmin or Rsetrpm RSET2MIN or RSETRPM2 Two Sets of Tuning Parameters for Single Output OperationTuning function prompts for HEAT/COOL are PB or Gain Index 278 UDC 3300 Controller Product Manual Y, Z 280 UDC 3300 Controller Product Manual Page Sensing and Control