ALARMS

The following table shows the list of all the alarms that have been identified during the design of the ATCS.

ALARMS:
Use Case	Sub-System	Conditions	Severity	Description Consequences
Monitor Transporter Status	TRL	Communication link broken Key is not on Remote status != OK anchors = Relocation/Fixed	Serious	Siemens PLC not reachable Many functions not available Telescope in Relocation/OnStation
Monitor Flowmeter	Services LCM	flow < minFlow	Serious	STRAP and TCCD not cooled sufficiently
Monitor Liquid Cooling Module	Services LCM	Communication link broken status != OK	Serious	Sauter PLC not reachable Cooling capacity may be not sufficient
Monitor Enclosure Status	ECS	Communication link broken Enclosure status is not OK Seals / Shell status is not OK Button not in Remote	Warning	Siemens PLC not reachable Enclosure system is not operating properly Enclosure shells are closed but seals not inflated Many functions are not available
Monitor Enclosure Status	ECS	Closing Automatically flag is set	Fatal	The telescope must be shutdown immediately
Monitor Enclosure Anemometers	ECS	Wind Speed > 18m/s	Warning	Prepare for stopping observation Enclosure might need be closed
Close Enclosure on Bad Meteo Conditions	ECS	ASM Meteo Conditions are not OK Local wind speed > 18m/s	Fatal	The telescope must be closed immediately
Monitor Hydraulic & Pneumatic Systems	Services HPS	Communication link broken Hydraulic status != OK Pneumatic status != OK	Serious	Siemens PLC not reachable Hydraulic capacity may be not sufficient Pneumatic capacity may be not sufficient
Monitor Altitude Cabinet Cooling	Services CCM	Communication link broken Cabinet temperature > limit	Warning	Ero PKC not reachable Cabinet temperature may be not sufficiently regulated
Monitor Auxiliary Power Module status	Services PWR	Communication link broken Main Power status != OK Battery alarm raised Battery status != OK	Serious	Siemens PLC not reachable Auxiliary Power Module is not operating properly
Monitor Sensor Power	Services PWR	+5V power supply to M6 amplifiers and Sensor Interface board is not OK	Warning	M6 amplifiers may not be available any longer
Monitor TCCD Temperatures	CCD	TCCD Chip temperature out of range TCCD Case temperature out of range	Warning	TCCD not properly cooled
Monitor Air Conditioning status	ACS	Communication link broken Button not in Remote Status != OK Enclosure Temperature < dewPoint + dewMargin	Serious	Sauter PLC not reachable Many functions not available AirConditioning system is not operating properly Risk of condensation

CCS ALARMS:
Module Alarm	Type	V = Value Ln = Limits Ha/Hb = Hysteresis above resp. below Limit	Condition	Severity
attrl STATUSA	Discrete 2State	V: status=[^:control:serial:transporter.status]	ERROR OK	Serious Normal
attrl ANCHORSA	Discrete 3State	V: anchors=[^:control:serial:transporter.anchors]	ERROR Relocation Fixed	Serious Warning Normal
atdcssrv FLOWMTRA	Analog 2State	V: coolingFlow=[^:data.coolingFlow] L: minCoolingFlow=[^:data.coolingFlowLimit] Hb: coolingFlowHyst=[minCoolingFlow / 5]	< L >= L	Serious Normal
atsrv LCMSTATUSA	Discrete 2State	V: lcmStatus=[^:control:serial:lcm.status]	ERROR OK	Serious Normal
atsrv HPSSTATUSA	Discrete 2State	V: hpsStatus=[^:control:serial:hps.status]	ERROR OK	Serious Normal
atsrv PWRSTATUSA	Discrete 2State	V: pwrStatus=[^:control:serial:pwr.status]	ERROR OK	Serious Normal
atdcssrv POWMONA	Discrete 2State	V: powerFailure=[^:data.powerFailure]	True False	Serious Normal
ataltsrv CCMSTATUSA	Discrete 2State	V: ccmStatus=[^:control:serial:ccm.status]	ERROR OK	Serious Normal
ataltsrv CABTEMPA	Analog 2State	V: cabinetTemp=[^:data.temperatures(CABINET)] L: [^:data.temperatures(AMBIENT)] Ha: [^:data.ccmTempMargin]	< L >= L	Normal Warning
atacs STATUSA	Discrete 3State	V: status=[^:control:serial:airCo.status]	ERROR IDLE ACTIVE	Serious Normal Normal
atacs LOCALA	Discrete 2State	V: local=[^:control:serial:airCo.localButton]	True False	Warning Normal
atacs DEWPOINTA	Analog 2State	V: enclosureTemp=[^:control:serial:airCo.encTemperature] L:  dewTempLimit=[^:control:serial:airCo.dewTemperature]+ [^:control:serial:airCo.dewMargin] Hb: [^:control:serial:airCo.dewMargin]	< L >= L	Serious Normal
atecs STATUSA	Discrete 2State	V: status=[^:control:serial:enclosure.status]	ERROR OK	Serious Normal
atecs LOCALA	Discrete 2State	V: local=[^:control:serial:enclosure.localButton]	False True	Normal Warning
atecs ENCLOSUREA	Discrete 2State	V: if ([^:control:serial:enclosure.shellAngle]=0 and [^:control:serial:enclosure.sealStatus]=DEFLATED) enclosure=ERROR else enclosure=OK	ERROR OK	Serious Normal
atecs AUTOCLOSEA	Discrete 2State	V: autoClose=[^:control:serial:enclosure.autoClose]	False True	Normal Fatal
atecs WINDSPEEDA	Analog 3State	V: windSpeed=MAX([^:control:serial:anemometer.windSpeed()]) L1: 10 m/s L2: [^:control:serial:enclosure.maxWindSpeed] Ha: 1 m/s	< L1 < L2 >= L2	Normal Warning Serious