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Toshiba L5232 manual Converter Error Alarm Output, 148

Models: L5232

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6F8A0917

10.9Converter Error Alarm Output

If one or more of the following errors occur in a self-diagnosis sequence, an alarm signal will be output using contact signals.

List of Alarm Output Factors

	Diagnosis error item	Diagnosis error alarm output (DO)
	Diagnosis error item	WITHOUT EMP	WITH EMP
		WITHOUT EMP	WITH EMP
	RAM error
	ROM error
	Exciting current value error
	Exciting current wire broken
	ADC error (error of flow measurement circuit)
	Parameter error
	Fluid empty alarm	−

○: If an error is detected, DO diagnosis error alarm is output.

−: Even if an error is detected, DO diagnosis error alarm will not be output. (Alarm message is displayed)

Self-Diagnosis Function Setting

•Follow the procedure in 8.2.19 “Self-Diagnosis Function” and set whether the self-diagnosis function is On or Off and set the alarm output factors.

For alarm output factors, set whether the fluid empty alarm should be included (WITH EMP) or not included (WITHOUT EMP) for alarm output.

DO Setting

To use the converter error alarm output, follow the procedure in 8.2.14 “Digital

I/O Function” and set the Digital Output (DO) for converter error alarm output.

In addition, for alarm output state, select Normally Open or Normally Closed.

If the self-diagnosis function only is used and external contact output is not used,

DO setting is not needed.

•Contact output operation

NORMAL OPEN : If an error occurs, contact closes

NORMAL CLOSE : If an error occurs, contact opens

Note: When power supply is turned off, the contact is OFF (contact opens).

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Toshiba L5232 manual Converter Error Alarm Output, 148

Contents

6F8A0917 Electromagnetic Flowmeter Converter LF232 TypeNd Edition August First Edition June 6F8A0917Color explanation Explanation of signal wordsSafety symbols Safety Precautions for Installation and Wiring Safety PrecautionsUsage limitation Safety Precautions for Maintenance and InspectionWarranty and Limitation of Liability Do not store or install the flowmeter Handling PrecautionsHandling Precautions Table of Contents 6F8A0917 6F8A0917 Storage Product Inspection and StorageProduct Inspection Overview FeaturesAppearance Names of PartsInternal structure with converter cover opened Terminal block construction Hands Installation6F8A0917 Unit inch mm How to Install the ConverterExample of Pipe Mounting Urn off mains power before working on pipes WiringFrom mains power Do not conduct wiring work with bare handsInstallation Cables Installation CablesExternal Connections 6F8A0917 Excitation cable Wiring MethodTerminal Treatment of Cables Terminal Treatment of Flow Rate Signal Cable Connecting the input signal cableCable Connection Power cable, current output cable and digital I/O cablesConnection to Terminal Block Grounding 9a Wiring between Detector and Converter10 Detector Grounding Method Difficult11 Connection Example of Electromagnetic Counter Digital I/O ConnectionsReplacing the LF230 Converter InstallationWiring Combination with an Existing Detector for Large Meter Size 12 How to Connect an Adjusting CapacitorReplacement of partially filled pipes type 6F8A0917 Operation 6F8A0917 Display and Controls Display and ControlsLCD display Operation switch infrared switchNames and Functions of Display and Controls Instructions Measurement mode Functions of each switchMenu display Setting mode Counter in operaiton Resets the counterFlow velocity value and instantaneous flow rate display Display FormatMeasured value display format Total difference flow value display Total count displayTotal flow value display Custom unit display Percent displayFixed output display Mode SwitchingError message / other message display ENTER111 6F8A0917 Moving to the menu display Setting Mode OperationTo return from the menu display to the measurement mode Checking or changing the setting values Mode switching flow when password is set Password InputExample of password input mode selection SET and password Totalizer Operation Example of totalizer operation Example to move to the maintenance menu Maintenance MenuReturn to measurement mode Setting Menu ListParameter Setting Items Parameter Settings / AdjustmentChecking the exciting current value Parameters Check / ChangeExciting Current Value Changing the exciting current value Checking the meter size of the detector Meter SizeChanging the meter size of the detector Checking the exciting frequency Exciting Frequency10,1/6,1/4 2.5 to 6 mm 26 to 120 500 to 3000 mmChanging the setting value for exciting frequency Checking the flow direction Flow DirectionChanging the flow direction SwitchChecking the password Password SettingChanging the password Checking the normal indicating unit Indicates the value in percent of the setting rangeNormal Indicating Unit Currently set main indicating unit % in this example Changing the flow direction for total flow Unit string of custom unit Custom UnitCoefficient of custom unit Proceed as follows to check the coefficient of custom unit Checking the coefficient of custom unitChanging the coefficient of custom unit Proceed as follows to check the unit string of custom unit Checking the unit string of custom unitChanging the unit string of custom unit Range type Span Value RangeUnit of span Span valueHysteresis Span value range setting flowSetting sequence of span value range is shown below Range 2 span value Checking each constantRange 3 span value Range 4 span valueChanging the range type Changing the span value Changing the hysteresis Proceed as follows to check the damping constant Damping ConstantChecking the damping constant Changing the damping constant Proceed as follows to check the low cutoff value Low Cutoff valueChecking the low cutoff value Changing the low cutoff value Checking the current output value used when an alarm occurs Current Output Setting Used When an Alarm OccursCurrent output setting function used when an alarm occurs Changing the current output value used when an alarm occurs Checking whether the display low cut is On or Off Display low cut On/OffChanging the display low cut On/Off setting Checking the output low limit value setting Output Low Limit SettingOutput low limit value Proceed as follows to check the output low limit valueChanging the output low limit value setting Digital output functions corresponding to each terminal Digital output state only when alarm output is setDigital I/O Function Digital Input Function Digital Output alarm state Checking each setting for digital I/ODigital Input control signal level Digital OutputDigital Output alarm status Changing each setting for digital I/OCount rate Pulse width modeCount Rate Pulse Rate and Pulse Width Over Spec Pulse widthPulse width Checking the count rate and pulse widthChanging the count rate Changing the pulse width mode setting Changing the pulse width Preset output function Preset CounterPreset count value Changing the preset count value Checking the preset counter setting100 Changing the preset output functionHigh/low limit alarm On/Off Flow Rate High/Low limit AlarmHigh/low limit value 101High-high limit alarm Checking the high/low limit alarm settingLow-low limit alarm On/Off 102103 Changing the high/low limit alarm On/Off104 Changing the high/low limit valueSetting the fluid empty alarm Fluid Empty AlarmChecking the fluid empty alarm On/Off setting 105106 Changing the fluid empty alarm On/Off setting107 Self-diagnosis function On/Off settingSelf-Diagnosis Function 108 Alarm output factor settingChecking the self-diagnosis alarm setting 109 Changing the self-diagnosis function settingRate-of-Change Limit Value and Control Time Checking the rate-of-change limit settingRate-of-change limit value Rate-of-change control time111 Changing the rate-of-change limit setting112 Initial Settings When Shipped from the Factory113 Fixed output mode can be selected by the setting as follows Fixed value output On/Off settingFixed Value Output Loop Check Fixed current output value115 Checking the fixed output function settingFixed pulse output value 116 Changing the fixed output function117 Changing the fixed output constant118 Zero AdjustmentStill Water Zero Adjustment 119 How to calculate the zero offset value Zero Offset AdjustmentChecking the zero offset adjustment value 120121 Changing the zero offset adjustment value122 Mag-Prover CalibrationCalibration Items 1 0% Flow Rate Calibration Zero Calibration Converter Check / CalibrationChecking the zero point Calibrating the zero pointChecking the 50% flow rate value 2 50% Flow Rate Calibration124 50% flow rate value can be checked onlyChecking the span value 3 100% Flow Rate Calibration Span CalibrationCalibrating the span value 125Monitor value of the exciting current can be checked Checking the Exciting Current Value126 127 Function DescriptionDigital Outputs Digital I/O SpecificationsDigital Input option 128129 Totalizer and Pulse Output130 131 Totalizer operation using digital input signals132 Multi-Range Functions133 Output performance when multiple ranges are usedSingle direction internal automatic switching, 4 ranges Forward direction Direction Output when switched from Reverse to134 135 Single direction external signal switching, 2 ranges136 137 Single direction external signal switching, 4 rangesFlow rate high/low limit alarm output performance Flow Rate High/Low Limit Alarm Output138 Case of Single range139 Case of Multi-range setting140 Output when an alarm is generated Fluid Empty Alarm OutputAlarm output state described in 8.2.14 Digital I/O Function 141142 Preset Counter Output Function143 Preset counter output performance144 Output example of one-shot pulse output 145146 Remote Still Water Zero Adjustment147 Remote Selection of Fixed Value Output148 Converter Error Alarm Output149 Communications FunctionConnection with the HHT terminal Connection to the Converter Main Unit 150151 Procedure for Communication with HHTInterference on 4 to 20mA current signal Wiring cableUse a shielded cable CVV-S, etc for wiring Current output loadDiagnostic messages Diagnosis and AlarmsSetting error High/low limit alarm154 Process error alarmFluid empty alarm 155 Self-diagnosis error156 Output When an Error or Alarm OccursMaintenance Maintenance and InspectionProduct disposal Check / Replacement of power supply unitOperative life 158159 TroubleshootingFlow rate is not indicated 160 Flow rate indication is not correct161 Flow rate indication is not stable162 When switch operation is unable= K × B × D × Q Principle of Operation163 Specifications SpecificationsDetector Combined Specifications 164165 166 Converter specifications167 168 169 Model Number Table170 171 Outline DrawingElectromagnetic Flowmeter Converter LF232 Type Gross mass approx lb8kg including a mounting plate172 FCF50017