Schneider Electric PM5300 Digital Alarms, How the power meter handles setpoint-driven alarms

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PowerLogic™ PM5300 series user guide

Chapter 7—Alarms

Many of the 1-second alarms are three-phase alarms. Alarm setpoints are evaluated for each of the three phases individually, but the alarm is reported as a single alarm. The alarm pickup occurs when the first phase exceeds the alarm pickup magnitude for the pickup time delay. The alarm is active as long as any phase remains in an alarm state. The alarm dropout occurs when the last phase drops below the dropout magnitude for the dropout time delay. See Figure 7–2below.

Figure 7–2: How the power meter handles setpoint-driven alarms

Pickup

Setpoint

Dropout

Setpoint

Max2

Max1

	ΔT							ΔT

Pickup Delay						Dropout Delay
		EV1							EV2
					Alarm Period

EV1—The power meter records the date and time that the pickup setpoint and time delay were satisfied, and the maximum value reached (Max1) during the pickup delay period (ΔT). Also, the power meter performs any tasks assigned to the event such as operation of a digital output.

EV2—The power meter records the date and time that the dropout setpoint and time delay were satisfied, and the maximum value reached (Max2) during the alarm period.

Digital Alarms

The power meter has two digital alarms for alarming on status input status. By default, the digital alarms are active when the associated status input is ON. The pickup and dropout time delays are configured in seconds.

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Contents PowerLogic PM5300 Series Power and Energy Meter Page Please note Important InformationPage Hardware Refer Introduction Chapter Safety Precau TionsEnce Chapter Multi-tariff feature Chapter AlarmsChapter Power quality Chapter Input / OutputChapter Maintenance Chapter Meter resetsUpgrades Chapter Verifying accuraPowerLogic PM5300 series user guide Parts and Accessories Power and Energy Meter HardwareBox Contents IntroductionPowerLogic PM5300 user guide Before You Begin Safety PrecautionsPowerLogic PM5300 series user guide Functions and Characteristics Models, Features and OptionsPM5300 Series Models, Features and Options Functions and CharacteristicsEnergy Values Power Quality MeasurementsDemand Values Other MeasurementsElectrical Characteristics Technical SpecificationsEnvironmental Characteristics Mechanical CharacteristicsSafety Electromagnetic CompatibilityHuman Machine Interface Safety precautionsDimension Mounting the PM5300 Meter mountingMeter wiring Screw driver type M3 Serial No Description SpecificationMake Part code Description Recommended cablesWiring Diagrams Symbol Description Power systemCurrent Transformer Voltage disconnect switch Direct connect voltage limitsSymbol Power system setup parameters Power system descriptionMeter setting Voltage input protection Voltage and current input wiringCurrent input protection Direct connect maximumCommunications Control power wiringBalanced system considerations Serial communicationsRS-485 network configuration RS-485 wiringRS-485 cable RS-485 maximum cable lengthEthernet wiring EthernetETHERNET SwitchSWITCH/ hub/ HUB Ethernet configurationDigital outputs Ethernet communicationsRelay outputs Status inputsDigital output connections Status input connectionsRelay output connections LED indicators Front panel display and meter setupAlarm / energy pulsing LED modes Heartbeat / communications LEDRelated topics Notification iconsMeter screen menus PM5300 display screen menus Menu treeMeter setup screen navigation Front panel meter setupConfiguring the basic setup parameters Basic setup screenParameter Values Description Basic setup menu treeBasic setup parameters Setting up serial communications Communications setupSerial communications setup menu tree Communication portsEthernet communications setup menu tree Setting up Ethernet communicationsCommunications setup parameters Setting up the display HMI settingsEthernet port settings Display setup menu treeSetting up regional settings Setting up the screen passwordsDisplay setup parameters Regional settings menu treePassword setup parameters Lost passwordPassword setup menu tree Clock setup menu tree Setting the clock Advanced setupClock setup parameters Advanced setup menu treeAdvanced setup parameters Setting up the alarm / energy pulsing LEDAlarm / energy pulsing LED settings menu tree LED setup parameterPower or current demand setup parameters Input / output setup Demand setupDemand setup menu tree Remote Meter Setup Multi-tariff setupAlarms setup Viewing meter data from the front panel Viewing Meter DataMeter data display screens Displaying data screensVolts U-V Power PQSHarm Energy EHz F AlarmUnbal MnMxUsing software to view meter data Using ION Setup to view or modify configuration dataTimer MaintStatus Input, Digital Output Ports and Relay Output Ports Input / OutputStatus input applications Configuring status inputs using ION Setup Status input setupNavigate to I/O configuration I/O Setup Status input setup parameters available through ION SetupStatus input setup menu tree Configuring status inputs using the front panelDigital output wiring example Digital output setupDigital output applications Digital output application exampleDigital output setup parameters available through ION Setup Configuring digital outputs using ION SetupDigital output setup menu tree Configuring digital outputs using the front panelOn Time s This defines the pulse width on time in seconds Parameter Values Description Configuring relay outputs using ION Setup Relay output setupRelay output setup parameters available through ION Setup Relay output applicationsSet to External or Alarm. The relay output Relay output setup menu tree Configuring relay outputs using the front panelAlarm / energy pulsing LED setup Navigate to I/O configuration Energy Pulsing Disabled turns off the LED completely Second Alarms AlarmsAbout Alarms Alarm List of Standard 1-Second Over/Under AlarmsHow the power meter handles setpoint-driven alarms Digital AlarmsUnary Alarms Alarm SetupAlarm Priorities Using an Alarm to Control a Relay and Digital OutputSetting Up 1-Second Alarms Setting Up 1-Second Alarms Setting Up Unary Alarms Setting Up Digital Alarms Setting Up Digital Alarms Viewing Active Alarms and Alarm Counters Viewing Alarm Activity and HistoryViewing Unacknowledged Alarms and the Alarm History Log PowerLogic PM5300 series user guide Alarms Description Number of Registers Data Type Register Number Data LogsData Logs Memory Allocation for Log Files Alarm LogAlarm Log Storage Measurements and calculations Power factorReal-time readings EnergyPower factor sign convention Power factor min/max conventionIEC mode Power factor minimum and maximumIeee mode Power demand calculation methodsDemand Block interval demandBlock interval demand example Synchronized demandPredicted demand Current demandThermal demand Thermal demand examplePredicted demand example Peak demandMulti-tariff feature overview Multi-tariff featureMulti-tariff feature example Time of day mode overview Command mode overviewTime format Front panel date and time formatConfiguration 1 four tariffs with weekdays and weekends Example tariff configurations for a four-tariff systemTariff creation method Tariff Type Start date End date Start time End timeConfiguration 1 2 tariff assignment using 2 digital inputs1 Input mode overviewConfiguration 2 2 tariff assignment using 2 digital inputs Digital input requirements for required number of tariffsConfiguring time of day mode tariffs using the front panel Configuring tariffs using the front panelTariff setup menu tree Time of day mode tariff setupConfiguring input mode tariffs using the front panel Harmonic content calculations Power qualityHarmonics overview Total Harmonic Distortion and Total Demand DistortionDisplaying harmonics data Viewing harmonics using the front panelTHD and thd calculations TDD calculationPower Quality display screen Viewing THD/thd using the front panelViewing TDD Example 13th to 21st harmonics for line-to-neutral voltageRelated topics Accuracy test requirements Testing overviewVerifying accuracy Energy pulsing Reference device or energy standardLocation of energy pulsing LED PM5300Verifying accuracy test Calculating the number of required pulses Calculating total powerPercent error calculation Total power limit for digital output Total power limit for alarm / energy LEDEnergy pulsing considerations VT and CT considerationsTest points Typical sources of test errorsWatt-hour test points example Var-hour test points exampleFront panel meter reset screens Meter resetsGlobal resets Reset menu treeSingle reset options Single resetsAlarm counter options Alarm counter Option DescriptionPowerLogic PM5300 series user guideChapter 13-Meter resets 102 Password Recovery Maintenance and UpgradesPower Meter Memory Identifying the Firmware Version, Model, and Serial NumberAdditional Meter Status Information Control PowerDownloading Firmware Meter105 TroubleshootingHeartbeat/Comms LED Potential Problem Possible Cause Possible Solution TroubleshootingGetting Technical Support Register List 106MID Compliance Specifications relevant to MIDMID overview MID compliance for the meterMID Compliance Installation and wiringPM5331/PM5341 default screen Installing the terminal coversDefault PM5331/PM5341 display screen Location of terminal coversLock-protected setup parameters MID-protected setup parametersLock-protected setup parameters Meter firmware versionInitializing the meter Setting up the PM5331/PM5341Locking or unlocking the meter Setting up lock passwordNavigate to Maint Setup Meter Lock 113 GlossaryTerms 114 115 Abbreviations116 117 118 Page Schneider Electric 35, rue Joseph Monier CS