User calibration | Marathon Computer AACC 2000 manual

Marathon Monitors Inc.

User calibration

This chapter has five topics:

∙WHAT IS THE PURPOSE OF USER CALIBRATION?

∙USER CALIBRATION ENABLE

∙OFFSET CALIBRATION

∙TWO POINT CALIBRATION

∙CALIBRATION POINTS AND CALIBRATION OFFSETS

To understand how to select and change parameters in this chapter you will need to have read Chapter 2 - Operation, Chapter 3- Access Levels and Chapter 6 - Configuration.

WHAT IS THE PURPOSE OF USER CALIBRATION?

The basic calibration of the controller is highly stable and set for life. User calibration allows you to offset the ‘permanent’ factory calibration to either:

1.Calibrate the controller to the your reference standards.

2.Match the calibration of the controller to that of a particular transducer or sensor input.

3.Calibrate the controller to suit the characteristics of a particular installation.

4.Remove long term drift in the factory set calibration.

User calibration works by introducing a single point, or two-point, offset onto the factory set calibration.

AACC 2000 Carbon

85

Nov. 1, 1997

Image 85

Marathon Computer AACC 2000 manual User calibration

Contents

Copyright Marathon Monitors INC Marathon Monitors Inc Mechanical Installation Electrostatic discharge precautions SafetyCleaning Electromagnetic compatibility Wiring Safety SymbolsPower Isolation Personnel Overcurrent protection Over-temperature protectionVoltage rating Conductive pollution Grounding of the temperature sensor shield Installation requirements for EMCRouting of wires Equipment ratings Environmental ratings General Electrical safety Marathon Monitors Inc Installation Outline dimensions Model 2000 controller Outline dimensions Model Introduction To install the controllerController labels Unplugging and plugging-in the controller Model Aacc 2000 rear terminal layout Rear terminal layouts Marathon Monitors Inc Module 1, 2 Sensor input connections Snubbers Two terminal modules COM Four terminal modulesDual output modules Connections for Process Value 2 PV2 Connections for Process Value 3 in module position Communication module EIA-485 wiring Wiring of 2-wire EIA-485 serial communications link Marathon Monitors Inc Operation Front Panel LAYOUTs 26.0 OP1 Button or Name ExplanationOP2 SP2 Basic operation Alarms Operating modes Output power demand Automatic modeHome display Display units Setpoint Manual Mode List header displays Parameters and HOW to Access Them Marathon Monitors Inc Parameter displays Parameter namesTo change the value of a parameter 1OFF ListOFF PID.1 PID STD Fact Pass Millivolt input Offset Name Description Prob Probe list Process FactorHydrogen or CO constant Name Description DrA TunEDrA.t Adc SEt Pid PID listRES Hcb Input list Setpoint list CmS Comms list Output listInFo Information list FF.OP Access List Alarms Display What it means What to do about it Shows Diagnostic alarms 2b Diagnostic alarms Access Levels Password entry Access list headerAccess to Read-only Configuration Configuration level Configuration passwordLevel selection Edit level Setting operator access to a parameterReturning to Operator Level Hiding or revealing a complete list Promoting a parameter This sheet intentionally left blank Parameter Code Meaning or Function Tuning How to tune One-shot Tuning Calculation of the cutback values Typical automatic tuning cycleAdaptive tune Manual Tuning Proceed as follows Setting the cutback values Automatic droop compensation Adc Integral action and manual reset Motorized valve control Name Description Values Mtr Motor list Min Max Default Inertia and backlash settings Adjusting the minimum on-time ‘mp.t’ Marathon Monitors Inc Gain scheduling Enable in configuration levelSet the transfer point Configuration Press to enter configuration Selecting configuration level Changing the passwords Leaving Configuration Level LIN REUD1SA Enab SB.OP CMS RelyNone YES DIG PMV Name Description Values Meaning InSt Instrument configurationH2O SP.FF Input 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 Combining several digital events on to one output Comms 1 module config 1A b C1 Module 1 configuration Module configCool For ‘id’ = ‘LoG.i’ i.e logic input use the LA Conf’ list on 2A/b/C Module 2 configuration Displayed value low SEL 3A/b/C Module 3 configuration Module configuration C Module configuration VAL.1 Point Custom LinearisationVAL.8 CAL Exit Exit configuration Password configurationDC Output Calibration User calibration User calibration Calibration Configuration List User Calibration EnableUser Calibration Enable Exit configuration Input list header Offset calibrationCalibration type Set Offset See table on the right for additional parameters Displayed Value Two-point calibration Select Low-point Calibration Adjust low-point calibration Select High-point Calibration Adjust High-point Calibration Name Parameter description Meaning Calibration points and Calibration offsets Parameter 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