144 | Toshiba L5232 manual

6F8A0917

•Example to reset the totalizer using an external signal input (When one-shot pulse output is set)

Reset/Start signal		H level input
Reset/Start signal
(DI control signal level L)
		L level input
Totalizer flow count
		Preset count
0		set-point
Counter reset	Counter start	Counter reset
Counter reset		ON
		ON
Preset output		OFF
		OFF
Preset output is OFF		Preset output OFF because
because Counter is reset.		pulse width is reached.

Input/Output Timing Chart

*When the Reset/Start signal is in L level (DI counter control signal level: L), the totalizer is reset to zero and stops counting. When the Reset/Start signal goes to H level, the totalizer starts counting. The preset output goes ON when the totalizer count exceeds the preset value, and the output goes OFF when the pulse width is reached or the totalizer is reset to zero.

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Toshiba L5232 manual 144

Contents

6F8A0917 Electromagnetic Flowmeter Converter LF232 Type Nd Edition August First Edition June 6F8A0917 Safety symbols Explanation of signal wordsColor explanation Safety Precautions for Installation and Wiring Safety Precautions Warranty and Limitation of Liability Safety Precautions for Maintenance and InspectionUsage limitation Do not store or install the flowmeter Handling Precautions Handling Precautions Table of Contents 6F8A0917 6F8A0917 Product Inspection Product Inspection and StorageStorage Overview Features Appearance Names of Parts Internal structure with converter cover opened Terminal block construction Hands Installation 6F8A0917 Unit inch mm How to Install the Converter Example of Pipe Mounting Urn off mains power before working on pipes WiringFrom mains power Do not conduct wiring work with bare hands Installation Cables Installation Cables External Connections 6F8A0917 Terminal Treatment of Cables Wiring MethodExcitation cable Terminal Treatment of Flow Rate Signal Cable Connecting the input signal cable Cable Connection Power cable, current output cable and digital I/O cables Connection to Terminal Block Grounding 9a Wiring between Detector and Converter 10 Detector Grounding Method Difficult 11 Connection Example of Electromagnetic Counter Digital I/O Connections Wiring InstallationReplacing the LF230 Converter Combination with an Existing Detector for Large Meter Size 12 How to Connect an Adjusting Capacitor Replacement of partially filled pipes type 6F8A0917 Operation 6F8A0917 Display and Controls Display and Controls Names and Functions of Display and Controls Operation switch infrared switchLCD display Instructions Measurement mode Functions of each switchMenu display Setting mode Counter in operaiton Resets the counter Measured value display format Display FormatFlow velocity value and instantaneous flow rate display Total flow value display Total count displayTotal difference flow value display Custom unit display Percent display Error message / other message display Mode SwitchingFixed output display ENTER111 6F8A0917 Moving to the menu display Setting Mode Operation To return from the menu display to the measurement mode Checking or changing the setting values Mode switching flow when password is set Password Input Example of password input mode selection SET and password Totalizer Operation Example of totalizer operation Example to move to the maintenance menu Maintenance Menu Return to measurement mode Setting Menu List Parameter Setting Items Parameter Settings / Adjustment Exciting Current Value Parameters Check / ChangeChecking the exciting current value Changing the exciting current value Checking the meter size of the detector Meter Size Changing 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 mm Changing the setting value for exciting frequency Checking the flow direction Flow Direction Changing the flow direction Switch Checking the password Password Setting Changing the password Normal Indicating Unit Indicates the value in percent of the setting rangeChecking the normal indicating unit Currently set main indicating unit % in this example Changing the flow direction for total flow Coefficient of custom unit Custom UnitUnit string of custom unit Changing the coefficient of custom unit Checking the coefficient of custom unitProceed as follows to check the coefficient of custom unit Changing the unit string of custom unit Checking the unit string of custom unitProceed as follows to check the unit string of custom unit Range type Span Value Range Unit of span Span value Setting sequence of span value range is shown below Span value range setting flowHysteresis Range 2 span value Checking each constantRange 3 span value Range 4 span value Changing the range type Changing the span value Changing the hysteresis Checking the damping constant Damping ConstantProceed as follows to check the damping constant Changing the damping constant Checking the low cutoff value Low Cutoff valueProceed as follows to check the low cutoff value Changing the low cutoff value Current output setting function used when an alarm occurs Current Output Setting Used When an Alarm OccursChecking the current output value 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/Off Changing 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 value Changing the output low limit value setting Digital I/O Function Digital output state only when alarm output is setDigital output functions corresponding to each terminal Digital Input Function Digital Output alarm state Checking each setting for digital I/ODigital Input control signal level Digital Output Digital Output alarm status Changing each setting for digital I/O Count Rate Pulse Rate and Pulse Width Pulse width modeCount rate Over Spec Pulse width Changing the count rate Checking the count rate and pulse widthPulse width Changing the pulse width mode setting Changing the pulse width Preset count value Preset CounterPreset output function Changing the preset count value Checking the preset counter setting 100 Changing the preset output function High/low limit alarm On/Off Flow Rate High/Low limit AlarmHigh/low limit value 101 High-high limit alarm Checking the high/low limit alarm settingLow-low limit alarm On/Off 102 103 Changing the high/low limit alarm On/Off 104 Changing the high/low limit value Setting the fluid empty alarm Fluid Empty AlarmChecking the fluid empty alarm On/Off setting 105 106 Changing the fluid empty alarm On/Off setting Self-Diagnosis Function Self-diagnosis function On/Off setting107 Checking the self-diagnosis alarm setting Alarm output factor setting108 109 Changing the self-diagnosis function setting Rate-of-Change Limit Value and Control Time Checking the rate-of-change limit settingRate-of-change limit value Rate-of-change control time 111 Changing the rate-of-change limit setting 112 Initial Settings When Shipped from the Factory 113 Fixed output mode can be selected by the setting as follows Fixed value output On/Off settingFixed Value Output Loop Check Fixed current output value Fixed pulse output value Checking the fixed output function setting115 116 Changing the fixed output function 117 Changing the fixed output constant Still Water Zero Adjustment Zero Adjustment118 119 How to calculate the zero offset value Zero Offset AdjustmentChecking the zero offset adjustment value 120 121 Changing the zero offset adjustment value Calibration Items Mag-Prover Calibration122 1 0% Flow Rate Calibration Zero Calibration Converter Check / CalibrationChecking the zero point Calibrating the zero point Checking the 50% flow rate value 2 50% Flow Rate Calibration124 50% flow rate value can be checked only Checking the span value 3 100% Flow Rate Calibration Span CalibrationCalibrating the span value 125 126 Checking the Exciting Current ValueMonitor value of the exciting current can be checked 127 Function Description Digital Outputs Digital I/O SpecificationsDigital Input option 128 129 Totalizer and Pulse Output 130 131 Totalizer operation using digital input signals 132 Multi-Range Functions Single direction internal automatic switching, 4 ranges Output performance when multiple ranges are used133 134 Output when switched from Reverse toForward direction Direction 135 Single direction external signal switching, 2 ranges 136 137 Single direction external signal switching, 4 ranges Flow rate high/low limit alarm output performance Flow Rate High/Low Limit Alarm Output138 Case of Single range 139 Case of Multi-range setting 140 Output when an alarm is generated Fluid Empty Alarm OutputAlarm output state described in 8.2.14 Digital I/O Function 141 142 Preset Counter Output Function 143 Preset counter output performance 144 Output example of one-shot pulse output 145 146 Remote Still Water Zero Adjustment 147 Remote Selection of Fixed Value Output 148 Converter Error Alarm Output Connection with the HHT terminal Communications Function149 Connection to the Converter Main Unit 150 151 Procedure for Communication with HHT Interference on 4 to 20mA current signal Wiring cableUse a shielded cable CVV-S, etc for wiring Current output load Diagnostic messages Diagnosis and AlarmsSetting error High/low limit alarm Fluid empty alarm Process error alarm154 155 Self-diagnosis error 156 Output When an Error or Alarm Occurs Maintenance Maintenance and Inspection Product disposal Check / Replacement of power supply unitOperative life 158 Flow rate is not indicated Troubleshooting159 160 Flow rate indication is not correct 161 Flow rate indication is not stable 162 When switch operation is unable 163 Principle of Operation= K × B × D × Q Specifications SpecificationsDetector Combined Specifications 164 165 166 Converter specifications 167 168 169 Model Number Table 170 171 Outline DrawingElectromagnetic Flowmeter Converter LF232 Type Gross mass approx lb8kg including a mounting plate 172 FCF50017