Marathon Computer AACC 2000 Diagnostic alarms, Display What it means What to do about it Shows

Page 45

Marathon Monitors Inc.

Diagnostic alarms

These indicate that a fault exists in either the controller or the connected devices.

Display	What it means	What to do about it
shows

EE.Er	Electrically Erasable Memory	This fault will automatically take you into
	Error:	Configuration level. Check all of the
	The value of an operator, or	configuration parameters before returning
	configuration, parameter has	to Operator level. Once in Operator level,
	been corrupted.	check all of the operator parameters
		before resuming normal operation. If the
		fault persists, or occurs frequently,
		contact MMI Controls.

S.br	Sensor Break:	Check that the sensor is correctly
	Input sensor is unreliable or	connected.
	the input signal is out of
	range.

L.br	Loop Break	Check that the heating and cooling
	The feedback loop is open	circuits are working properly.
	circuit.

Hw.Er	Hardware error	Check that the correct modules are fitted.
	Indication that a module is of
	the wrong type, missing, or
	faulty.

no.io	No I/O	This error message normally occurs
	None of the expected I/O	when pre-configuring a controller without
	modules is fitted.	installing any of the required I/O modules.

rmt.F	Remote input failure. the	Check for open, or short circuit wiring on
	remote DC input, is open or	the remote DC input.
	short circuit

LLLL	Out of range low reading	Check the value of the input.

HHHH	Out of range high reading	Check the value of the input.

Err1	Error 1: ROM self-test fail	Return the controller for repair.

Err2	Error 2: RAM self-test fail	Return the controller for repair.

Err3	Error 3: Watchdog fail	Return the controller for repair.

Err4	Error 4: Keyboard failure	Switch the power off and then on, without
	Stuck button, or a button was	touching any of the controller buttons.
	pressed during power up.

Err5	Error 5: Faulty internal	Check printed circuit board
	communications.	interconnections. If the fault cannot be
		cleared, return the controller for repair.

AACC 2000 Carbon	45	Nov. 1, 1997
	45

Image 45

Contents Copyright Marathon Monitors INC Marathon Monitors Inc Mechanical Installation Electrostatic discharge precautions SafetyCleaning Electromagnetic compatibilityWiring Safety SymbolsPower Isolation PersonnelOvercurrent protection Over-temperature protectionVoltage rating Conductive pollutionInstallation requirements for EMC Grounding of the temperature sensor shieldRouting of wires Equipment ratings Environmental ratingsGeneral Electrical safetyMarathon Monitors Inc Installation Outline dimensions Model 2000 controller Outline dimensions ModelIntroduction To install the controllerController labels Unplugging and plugging-in the controllerModel Aacc 2000 rear terminal layout Rear terminal layoutsMarathon Monitors Inc Module 1, 2 Sensor input connectionsSnubbers Two terminal modulesFour terminal modules COMDual output modules Connections for Process Value 2 PV2 Connections for Process Value 3 in module positionCommunication module EIA-485 wiring Wiring of 2-wire EIA-485 serial communications linkMarathon Monitors Inc Operation Front Panel LAYOUTs 26.0OP1 Button or Name ExplanationOP2 SP2Basic operation AlarmsOperating modes Output power demand Automatic modeHome display Display unitsSetpoint Manual ModeList header displays Parameters and HOW to Access ThemMarathon Monitors Inc Parameter names Parameter displaysTo change the value of a parameter List 1OFFOFF PID.1 PIDSTD FactPass Name Description Prob Probe list Process Factor Millivolt input OffsetHydrogen or CO constant Name Description DrA TunEDrA.t AdcSEt Pid PID listRES HcbInput list Setpoint listOutput list CmS Comms listInFo Information list FF.OP Access ListAlarms Display What it means What to do about it Shows Diagnostic alarms2b Diagnostic alarms Access Levels Access list header Password entryAccess to Read-only Configuration Configuration password Configuration levelLevel selection Edit level Setting operator access to a parameterReturning to Operator Level Hiding or revealing a complete listPromoting a parameter This sheet intentionally left blank Parameter Code Meaning or Function TuningHow to tune One-shot TuningTypical automatic tuning cycle Calculation of the cutback valuesAdaptive tune Manual Tuning Proceed as follows Setting the cutback valuesAutomatic droop compensation Adc Integral action and manual resetMotorized valve control Name Description Values Mtr Motor list Min Max DefaultInertia and backlash settings Adjusting the minimum on-time ‘mp.t’Marathon Monitors Inc Enable in configuration level Gain schedulingSet the transfer point Configuration Press to enter configuration Selecting configuration levelChanging the passwords Leaving Configuration LevelLIN REUD1SA Enab SB.OPRely CMSNone YES DIGPMV Name Description Values Meaning InSt Instrument configurationH2O SP.FFProcess value config Input configurationCJC Setpoint configuration VAL.LVAL.H Alarm configuration Values Table a Alarm types ValueAlarm Modes Digital input 1 configuration Action on contact closure Digital input 2 configuration Action on contact closureIMP Alarm relay configuration VfltPflt Combining several digital events on to one output Comms 1 module configModule config 1A b C1 Module 1 configurationCool For ‘id’ = ‘LoG.i’ i.e logic input use the LA Conf’ list on 2A/b/C Module 2 configurationDisplayed value low SEL 3A/b/C Module 3 configurationModule configuration C Module configurationPoint Custom Linearisation VAL.1VAL.8 CAL Exit Exit configuration Password configurationDC Output Calibration User calibrationUser calibration Calibration Configuration List User Calibration EnableUser Calibration Enable Exit configurationOffset calibration Input list headerCalibration type Set Offset See table on the right for additional parametersDisplayed Value Two-point calibrationSelect Low-point Calibration Adjust low-point calibrationSelect High-point Calibration Adjust High-point CalibrationName Parameter description Meaning Calibration points and Calibration offsetsParameter 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