167 | Toshiba L5232 specs

6F8A0917

•Range switching output One Digital Output (DO) is used

•Single direction, 2-range switching signal

•Forward/reverse direction switching signal

Two Digital Outputs (DO) are used

•Single direction, 4-range switching signals

•Forward/reverse 2-range switching signals

•High/low limit alarm output

An alarm is output when flow rate goes above or below the set-point value

Setting range −10 to 110% of the settable maximum range High limit 2 points, low limit 2 points can be set

At the time of alarm output, Normally Open or Normally Closed contact can be selected

•Preset counter output

Contact ON when totalizer count exceeds the set value

Setting range 1 to 99999999 count

•Converter error alarm

An alarm is output when an operation error is detected by self-diagnosis.

At the time of alarm output, Normally Open or Normally Closed contact can be selected

•Digital Input (option: added when 9th digit of specification code is “3”): 2 Digital Inputs

Signal type:	Voltage signal of 20 to 30 VDC (H level: 20 to 30 VDC, L level: 2 VDC :
	or less)

Input resistance: About 2.7 kΩ

*For digital input function, either of the following functions can be selected. Digital Input function

• Range switching input	One Digital Input is used: switching between large and small ranges
	of forward/reverse, 2-range measurement
	Two Digital Inputs are used: switching between ranges of single
• Totalizer control input	direction, 4-range measurement
• Totalizer control input	Totalizer Start/Stop control or Reset/Start
• Output hold input	Fixed with set value for current output and pulse output (loop check)
• Zero adjustment input	Performs still water zero adjustment

4.Communication function

• Communication signal: Digital signal is superimposed on 4 to 20mA signal line (conforms to

HART*1 protocol)

• Load resistance 240Ω to 1kΩ

•Load capacitance 0.25μF or less

• Load inductance 4mH or less

(For maximum cable length, about 2km is a guideline length when CVV-S 1.25mm2 is used under standard installation condition.)

*1 HART: “HART” stands for Highway Addressable Remote Transducer and is the name of the communication protocol for industry sensors that is recommended by HCF (HART Communication Foundation).

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Toshiba L5232 manual 167

Contents

Electromagnetic Flowmeter Converter LF232 Type 6F8A0917 6F8A0917 Nd Edition August First Edition June Explanation of signal words Safety symbolsColor explanation Safety Precautions Safety Precautions for Installation and Wiring Safety Precautions for Maintenance and Inspection Warranty and Limitation of LiabilityUsage limitation Handling Precautions Do not store or install the flowmeter Handling Precautions Table of Contents 6F8A0917 6F8A0917 Product Inspection and Storage Product InspectionStorage Features Overview Names of Parts Appearance Internal structure with converter cover opened Terminal block construction Installation Hands 6F8A0917 How to Install the Converter Unit inch mm Example of Pipe Mounting Wiring Urn off mains power before working on pipesFrom mains power Do not conduct wiring work with bare hands Installation Cables Installation Cables External Connections 6F8A0917 Wiring Method Terminal Treatment of CablesExcitation cable Connecting the input signal cable Terminal Treatment of Flow Rate Signal Cable Power cable, current output cable and digital I/O cables Cable Connection Connection to Terminal Block 9a Wiring between Detector and Converter Grounding Difficult 10 Detector Grounding Method Digital I/O Connections 11 Connection Example of Electromagnetic Counter Installation WiringReplacing the LF230 Converter 12 How to Connect an Adjusting Capacitor Combination with an Existing Detector for Large Meter Size Replacement of partially filled pipes type 6F8A0917 Operation 6F8A0917 Display and Controls Display and Controls Operation switch infrared switch Names and Functions of Display and ControlsLCD display Instructions Functions of each switch Measurement modeMenu display Setting mode Counter in operaiton Resets the counter Display Format Measured value display formatFlow velocity value and instantaneous flow rate display Total count display Total flow value displayTotal difference flow value display Percent display Custom unit display Mode Switching Error message / other message displayFixed output display ENTER111 6F8A0917 Setting Mode Operation Moving to the menu display To return from the menu display to the measurement mode Checking or changing the setting values Password Input Mode switching flow when password is set Example of password input mode selection SET and password Totalizer Operation Example of totalizer operation Maintenance Menu Example to move to the maintenance menu Setting Menu List Return to measurement mode Parameter Settings / Adjustment Parameter Setting Items Parameters Check / Change Exciting Current ValueChecking the exciting current value Changing the exciting current value Meter Size Checking the meter size of the detector Changing the meter size of the detector Exciting Frequency Checking the 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 Flow Direction Checking the flow direction Switch Changing the flow direction Password Setting Checking the password Changing the password Indicates the value in percent of the setting range Normal Indicating UnitChecking the normal indicating unit Currently set main indicating unit % in this example Changing the flow direction for total flow Custom Unit Coefficient of custom unitUnit string of custom unit Checking the coefficient of custom unit Changing the coefficient of custom unitProceed as follows to check the coefficient of custom unit Checking the unit string of custom unit Changing the unit string of custom unitProceed as follows to check the unit string of custom unit Span Value Range Range type Span value Unit of span Span value range setting flow Setting sequence of span value range is shown belowHysteresis Checking each constant Range 2 span valueRange 3 span value Range 4 span value Changing the range type Changing the span value Changing the hysteresis Damping Constant Checking the damping constantProceed as follows to check the damping constant Changing the damping constant Low Cutoff value Checking the low cutoff valueProceed as follows to check the low cutoff value Changing the low cutoff value Current Output Setting Used When an Alarm Occurs Current output setting function used when an alarm occursChecking the current output value used when an alarm occurs Changing the current output value used when an alarm occurs Display low cut On/Off Checking whether the display low cut is On or Off Changing the display low cut On/Off setting Output Low Limit Setting Checking the output low limit value settingOutput low limit value Proceed as follows to check the output low limit value Changing the output low limit value setting Digital output state only when alarm output is set Digital I/O FunctionDigital output functions corresponding to each terminal Digital Input Function Checking each setting for digital I/O Digital Output alarm stateDigital Input control signal level Digital Output Changing each setting for digital I/O Digital Output alarm status Pulse width mode Count Rate Pulse Rate and Pulse WidthCount rate Pulse width Over Spec Checking the count rate and pulse width Changing the count ratePulse width Changing the pulse width mode setting Changing the pulse width Preset Counter Preset count valuePreset output function Checking the preset counter setting Changing the preset count value Changing the preset output function 100 Flow Rate High/Low limit Alarm High/low limit alarm On/OffHigh/low limit value 101 Checking the high/low limit alarm setting High-high limit alarmLow-low limit alarm On/Off 102 Changing the high/low limit alarm On/Off 103 Changing the high/low limit value 104 Fluid Empty Alarm Setting the fluid empty alarmChecking the fluid empty alarm On/Off setting 105 Changing the fluid empty alarm On/Off setting 106 Self-diagnosis function On/Off setting Self-Diagnosis Function107 Alarm output factor setting Checking the self-diagnosis alarm setting108 Changing the self-diagnosis function setting 109 Checking the rate-of-change limit setting Rate-of-Change Limit Value and Control TimeRate-of-change limit value Rate-of-change control time Changing the rate-of-change limit setting 111 Initial Settings When Shipped from the Factory 112 113 Fixed value output On/Off setting Fixed output mode can be selected by the setting as followsFixed Value Output Loop Check Fixed current output value Checking the fixed output function setting Fixed pulse output value115 Changing the fixed output function 116 Changing the fixed output constant 117 Zero Adjustment Still Water Zero Adjustment118 119 Zero Offset Adjustment How to calculate the zero offset valueChecking the zero offset adjustment value 120 Changing the zero offset adjustment value 121 Mag-Prover Calibration Calibration Items122 Converter Check / Calibration 1 0% Flow Rate Calibration Zero CalibrationChecking the zero point Calibrating the zero point 2 50% Flow Rate Calibration Checking the 50% flow rate value124 50% flow rate value can be checked only 3 100% Flow Rate Calibration Span Calibration Checking the span valueCalibrating the span value 125 Checking the Exciting Current Value 126Monitor value of the exciting current can be checked Function Description 127 Digital I/O Specifications Digital OutputsDigital Input option 128 Totalizer and Pulse Output 129 130 Totalizer operation using digital input signals 131 Multi-Range Functions 132 Output performance when multiple ranges are used Single direction internal automatic switching, 4 ranges133 Output when switched from Reverse to 134Forward direction Direction Single direction external signal switching, 2 ranges 135 136 Single direction external signal switching, 4 ranges 137 Flow Rate High/Low Limit Alarm Output Flow rate high/low limit alarm output performance138 Case of Single range Case of Multi-range setting 139 140 Fluid Empty Alarm Output Output when an alarm is generatedAlarm output state described in 8.2.14 Digital I/O Function 141 Preset Counter Output Function 142 Preset counter output performance 143 144 145 Output example of one-shot pulse output Remote Still Water Zero Adjustment 146 Remote Selection of Fixed Value Output 147 Converter Error Alarm Output 148 Communications Function Connection with the HHT terminal149 150 Connection to the Converter Main Unit Procedure for Communication with HHT 151 Wiring cable Interference on 4 to 20mA current signalUse a shielded cable CVV-S, etc for wiring Current output load Diagnosis and Alarms Diagnostic messagesSetting error High/low limit alarm Process error alarm Fluid empty alarm154 Self-diagnosis error 155 Output When an Error or Alarm Occurs 156 Maintenance and Inspection Maintenance Check / Replacement of power supply unit Product disposalOperative life 158 Troubleshooting Flow rate is not indicated159 Flow rate indication is not correct 160 Flow rate indication is not stable 161 When switch operation is unable 162 Principle of Operation 163= K × B × D × Q Specifications SpecificationsDetector Combined Specifications 164 165 Converter specifications 166 167 168 Model Number Table 169 170 Outline Drawing 171Electromagnetic Flowmeter Converter LF232 Type Gross mass approx lb8kg including a mounting plate 172 FCF50017