Marathon Computer AACC 2000 Pid PID list, SEt, Res, Lcb, Rel.C, Pb2, Ti2, Td2, RES.2, Hcb2

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Marathon Monitors Inc.

	Name	Description

	Pid	PID list
	G.SP	If Gain Scheduling has been enabled (see Chapter 4), this parameter sets
		the PV below which ‘Pid.1’ is active and above which ‘Pid.2’ is active.
	SEt	‘Pid.1’ or ‘Pid.2’ selected
	Pb	Proportional Band	(SEt 1)
		(in display units)
	ti	Integral Time in secs(SEt 1)
	td	Derivative Time in secs	(SEt 1)
	rES	Manual Reset (%)	(SEt 1)
	Hcb	Cutback High	(SEt 1)
	Lcb	Cutback Low	(SEt 1)
	rEL.C	Relative Cool Gain	(SEt 1)
	Pb2	Proportional Band	(SEt 2)
	ti2	Integral Time in secs(SEt 2)
	td2	Derivative Time in secs	(SEt 2)
	rES.2	Manual Reset (%)	(SEt 2)
	Hcb2	Cutback High	(SEt 2)
	Lcb2	Cutback Low	(SEt 2)
	rEL.2	Relative Cool Gain	(SEt 2)

The following three parameters are used for cascade control. If this facility is not being used, then they can be ignored.

FF.Pb	SP, or PV, feedforward propband
FF.tr	Feedforward trim %
FF.dv	PID feedforward limits ± %

mtr	Motor list - see Table 4-3
tm	Valve travel time in seconds
In.t	Valve inertia time in secs
bAc.t	Valve backlash time in secs
mp.t	Minimum ON time of output pulse
U.br	Valve sensor break strategy

AACC 2000 Carbon	40	Nov. 1, 1997
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Contents Copyright Marathon Monitors INC Marathon Monitors Inc Mechanical Installation Safety Electrostatic discharge precautionsCleaning Electromagnetic compatibilitySafety Symbols WiringPower Isolation PersonnelOver-temperature protection Overcurrent protectionVoltage rating Conductive pollutionGrounding of the temperature sensor shield Installation requirements for EMCRouting of wires Environmental ratings Equipment ratingsElectrical safety GeneralMarathon Monitors Inc Installation Outline dimensions Model Outline dimensions Model 2000 controllerTo install the controller IntroductionController labels Unplugging and plugging-in the controllerRear terminal layouts Model Aacc 2000 rear terminal layoutMarathon Monitors Inc Sensor input connections Module 1, 2Two terminal modules SnubbersCOM Four terminal modulesDual output modules Connections for Process Value 3 in module position Connections for Process Value 2 PV2Communication module Wiring of 2-wire EIA-485 serial communications link EIA-485 wiringMarathon Monitors Inc Operation 26.0 Front Panel LAYOUTsButton or Name Explanation OP1OP2 SP2Alarms Basic operationOperating modes Automatic mode Output power demandHome display Display unitsManual Mode SetpointParameters and HOW to Access Them List header displaysMarathon Monitors Inc Parameter displays Parameter namesTo change the value of a parameter 1OFF ListOFF PID PID.1Fact STDPass Millivolt input Offset Name Description Prob Probe list Process FactorHydrogen or CO constant Name Description TunE DrADrA.t AdcPid PID list SEtRES HcbSetpoint list Input listCmS Comms list Output listInFo Information list Access List FF.OPAlarms Diagnostic alarms Display What it means What to do about it Shows2b Diagnostic alarms Access Levels Password entry Access list headerAccess to Read-only Configuration Configuration level Configuration passwordLevel selection Setting operator access to a parameter Edit levelReturning to Operator Level Hiding or revealing a complete listPromoting a parameter This sheet intentionally left blank Tuning Parameter Code Meaning or FunctionOne-shot Tuning How to tuneCalculation of the cutback values Typical automatic tuning cycleAdaptive tune Manual Tuning Setting the cutback values Proceed as followsIntegral action and manual reset Automatic droop compensation AdcName Description Values Mtr Motor list Min Max Default Motorized valve controlAdjusting the minimum on-time ‘mp.t’ Inertia and backlash settingsMarathon Monitors Inc Gain scheduling Enable in configuration levelSet the transfer point Configuration Selecting configuration level Press to enter configurationLeaving Configuration Level Changing the passwordsREU LIND1SA Enab SB.OPCMS RelyNone DIG YESPMV InSt Instrument configuration Name Description Values MeaningH2O SP.FFInput configuration Process value configCJC VAL.L Setpoint configurationVAL.H Table a Alarm types Value Alarm configuration ValuesAlarm Modes Digital input 2 configuration Action on contact closure Digital input 1 configuration Action on contact closureIMP Vflt Alarm relay configurationPflt Comms 1 module config Combining several digital events on to one output1A b C1 Module 1 configuration Module configCool 2A/b/C Module 2 configuration For ‘id’ = ‘LoG.i’ i.e logic input use the LA Conf’ list onDisplayed value low 3A/b/C Module 3 configuration SELC Module configuration Module configurationVAL.1 Point Custom LinearisationVAL.8 CAL Password configuration Exit Exit configurationDC Output Calibration User calibrationUser calibration User Calibration Enable Calibration Configuration ListUser Calibration Enable Exit configurationInput list header Offset calibrationCalibration type See table on the right for additional parameters Set OffsetTwo-point calibration Displayed ValueAdjust low-point calibration Select Low-point CalibrationAdjust High-point Calibration Select High-point CalibrationCalibration points and Calibration offsets Name Parameter description MeaningParameter Table Default HY1 Ssel FLT3 Marathon Monitors Inc AL1 Module 2A High Value VAL.1 101 Index Two-point calibration User calibration Aacc 2000 Carbon