Honeywell UDC3200 manual Tune for Simplex Outputs, Operation, Procedure for Starting Tune

Page 78

Operation

The Accutune III algorithm provides user-friendly, on-demand tuning in this controller. No knowledge of the process is required at start-up. The operator simply initiates the tuning while in the automatic mode.

Once Accutune III has been enabled in the TUNE setup group, either “SLOW” or “FAST” tuning may be used. Which one is used is selected via the lower display during normal operation.

For the SLOW selection, the controller calculates conservative tuning constants with the objective of minimizing overshoot. If the controller determines that the process has appreciable dead time, it will automatically default to use Dahlin Tuning, which produces very conservative tuning constants. The SLOW selection may be useful for TPSC and Position Proportional applications, as it reduces “hunt” problems for the motor. This selection is also recommended for applications that have significant deadtimes.

For the FAST selection, the controller calculates aggressive tuning constants with the objective of producing quarter damped response. Depending upon the process, this selection will usually result in some overshoot. For this reason, it may be desireable to enable the FUZZY tune selection. See Section 4.6. When Fuzzy tune is enabled, it will work to suppress or eliminate any overshoot that may occur as a result of the calculated tuning parameters as the PV approaches the setpoint. This selection is best suited for processes with a single lag or for those that do not have any appreciable deadtime. FUZZY tuning does not work well for processes that have appreciable deadtime.

The Accutune III tuning process will cycle the controller’s output two full cycles between the low and high output limits while allowing only a very small Process Variable change above and below the SP during each cycle. A “T” shows in the upper display until tuning is completed.

At the end of the tuning process, the controller immediately calculates the tuning constants and enters them into the Tuning group, and begins PID control with the correct tuning parameters. This works with any process, including integrating type processes, and allows retuning at a fixed setpoint.

4.5.1 Tune for Simplex Outputs

After “TUNE” has been enabled, you can start Accutune as shown in Table 4-5.

Table 4-5 Procedure for Starting “TUNE”

 

Step

Operation

 

Press

Result

 

 

 

1

Configure LSP1

 

 

 

Until SP (Local Setpoint 1) shows

 

 

 

Lower

 

 

 

 

 

 

 

Display

 

in the lower display.

 

 

 

 

 

 

 

 

 

 

2

 

 

or

 

Until LSP1 is to the desired value.

 

 

3

Switch to

 

 

 

Until the “A” indicator is lighted (on

 

Man

 

 

 

“Automatic” Mode

 

Auto

 

controllers with Manual option).

 

 

 

 

 

 

 

 

 

 

4

Show Tuning

 

 

 

Until “TUNE OFF” is shown on

 

 

 

Lower

 

 

 

 

 

Prompt

 

Display

 

lower display.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

72

 

UDC3200 Universal Digital Controller Operator Manual

04/08

Page 77 Page 79
Image 78
Page 77 Page 79
Contents UDC3200 Universal Digital Controller Operator Manual World Wide Web WARRANTY/REMEDYContacts TelephoneSymbol Definitions Symbol DefinitionContents TROUBLESHOOTING/SERVICE Page Operator Interface Function of Displays and KeysFunction of Displays and Keys CE Conformity Europe Keys and FunctionsUDC3200 Universal Digital Controller Operator Manual Page Pre-installation Information Model Number InterpretationAlarm Relay Contact Information Control and Alarm Relay Contact InformationAlarm Relays Control RelaysOverall Dimensions MountingPhysical Considerations Mounting Method Step ActionWiring Bundle No Wire Functions Wiring DiagramsPermissible Wiring Bundling Universal Output Functionality and RestrictionsINU Wiring the Controller CalloutDetails Earth Ground Hot AC/DCLine Neutral Voltage L2/N Input #1 RTDInput #2 Input 2 ConnectionsTime Simplex Time DuplexPower Load Relay Load L2/N PowerSupply Power Relay Load10 Open Collector Output Time Duplex with a Dual Relay Board L2/N Relay LoadUDC3200 Universal Digital Controller Operator Manual 04/08 15 RS-422/485 Communications Option Connections 17 Auxiliary Output and Digital Inputs Option Connections Digital Inputs26 + 12 +Configuration Configuration Prompt HierarchyConfiguration Procedure Configuration ProcedureProcedure IntroductionTuning Set Up Group 02 to Configuration is CompleteRSET2MIN RSET2RPM CYC SEC CYC SX3 CYC2 SEC CYC2 SX3 Security LockoutAuto MAN Disable Enable RUN Hold Disable EnableSP SEL SP Ramp Set Up Group SP Prog KeyresetEU/HR DN Strt SEG END SEGSEG4 SP SEG4TIME SEG2TIMESEG3RATE SEG5RATE SEG6 SP SEG6TIMEAccutune Set Up Group Fuzzy Disable Enable Accutune TuneAT Error Algorithm Set Up Group ALG ON-OFFTimer ALG PD+MR000 to Start KEY Alarm LOW Disp TI REM TimePeriod INP ALG1Input LOW Select with Ratio and BIAS- This selection Summer with Ratio and BIAS-The following formulaInput High Select with Ratio and BIAS-This selection Multiplier Divider with Square Root -The followingCalc HI FCCMath K Calc LOPCT CO ALG1 INBALG1 INC ALG1 BiasOutput Set Up Group OUT ALGOUT RNG Rlystate RLY TypeLOW VAL Motor TICUR OUT High VALInput 1 Set Up Group IN1 TypeRatio XmitterIN1 LOW Bias IN1Burnout None EMISSIV101 to Input 2 Set Up Group IN2 TypeXMITTER2 Bias IN2 IN2 HighIN2 LOW Burnout Burnout Protection Sensor BreakEMISSIV2 Input Input Algorithm Control Set Up GroupPV Source Input ALG1 PID Sets PID Sets 2PV SWSP Track PWR ModeRSP SRC None Input ALG1 Autobias PWR OUTPCT/M UP ActionOUT Rate PCT/M DNFailmode Failsafe ModeDeadband MAN OUTRPM MinutesAuxiliary Output Selection Options GroupAUX OUT No Auxiliary OutputDIG INP1 No Digital Input SelectionsWas not previously started via To RUN DIG2COMB DIG 1COMBDIG INP2 Digital Input 2 Selections Digital Input 2 CombinationsCommunications Group CSP Rato Shed SPUnits CSP BiasAlarms Set Up Group A1S1 EV High AlarmLOW Alarm Beginning of SegmentA2S1 EV A1S2 EVA2S1TYPE A2S2TYPEALARM12 DiagnostDisplay Set Up Group Page Entering a Security Code Operator InterfaceProcedure to Enter a Security Code Key errorIndividual key lockout Monitoring Your Controller 4.4.1 Annunciators AnnunciatorsALM 1 OUT 1 DI 1 Or MAN None, F or C Viewing the operating parameters Lower Display Key Parameter Prompts Diagnostic Messages Diagnostic Messages Description Functional Overview Block Diagram of the UDC3200 Controller Configuration check Tuning indicatorsAccutune Operation Procedure for Starting TuneTune for Simplex Outputs Step Operation Press ResultConfiguration Check for Duplex Tune for Duplex Heat/CoolUsing Automatic Tune at start-up for Duplex Heat/Cool Using Blended Tune at start-up for Duplex Heat/Cool Using Manual Tune at start-up for Duplex Heat/CoolStep Operation Press Result 11 Accutune Error Codes Error Codes10 Procedure for Accessing Accutune Error Codes Aborting AccutuneConfiguration Fuzzy Overshoot SuppressionHow it works EE Fail Background TestsBackground Tests INP1 RNGCAL MTR RV LimitSegerr CurfailController Failure Symptoms Other symptomsSales and Service Page Http//hpsweb.honeywell.com
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