Fluid Empty Alarm, Setting the fluid empty alarm | Toshiba L5232

6F8A0917

8.2.18 Fluid Empty Alarm

Fluid empty alarm is the function to generate an alarm when a condition is detected in which fluid is not filled or water level is not enough in the measuring pipe of the flowmeter.

If an alarm is generated, an alarm message is displayed and a signal can be output through DO. Note

•To output a fluid empty alarm through DO, it is necessary to set the DO function for output. For how to set the DO function, see 8.2.14 “Digital I/O Function.”

•In the case of LF232*F; Fluid empty alarm function is not usable. Set this function 'OFF'.

Setting the fluid empty alarm

Whether the fluid empty alarm should be used or not, and its detection sensitivity can be selected.

EMPTY		Fluid empty alarm setting

1: OFF	Fluid empty alarm not used
	Fluid empty condition is not detected.

2: NORMAL	Fluid empty alarm used		Sensitivity: Standard
	If a fluid empty condition is		Detection sensitivity is set to the standard level.
	detected, an alarm will be
3: SENSITIVE	detected, an alarm will be		Sensitivity: High
3: SENSITIVE	output.		Sensitivity: High
	output.		Detection sensitivity is set to high sensitivity level.
			Detection sensitivity is set to high sensitivity level.

4: SENSITIVE-H			Sensitivity: Higher
			Detection sensitivity is set to higher sensitivity
			level.

*To use the fluid empty alarm, normally select 2:NORMAL (standard detection sensitivity). Select 3:SENSITVE or 4:SENSITIVE-H only when the fluid empty alarm is difficult to detect due to the condition of the fluid to be measured or its piping condition.

Checking the fluid empty alarm On/Off setting

Proceed as follows to check whether the fluid empty alarm is used (On) or not (Off).

Switch operation	Display example	Description

	L1: EMPTY ALM	Select L1:EMPTY ALM from the setting item selection menu.
	1:NORMAL	The currently set fluid empty alarm On/Off setting appears.

L1: EMPTY ALM

Returns to the menu of setting item selection.

- 105 -

Image 106

Toshiba L5232 manual Fluid Empty Alarm, Setting the fluid empty alarm, Checking the fluid empty alarm On/Off setting, 105

Contents

Electromagnetic Flowmeter Converter LF232 Type 6F8A0917 6F8A0917 Nd Edition August First Edition June Safety symbols Explanation of signal wordsColor explanation Safety Precautions Safety Precautions for Installation and Wiring Warranty and Limitation of Liability Safety Precautions for Maintenance and InspectionUsage limitation Handling Precautions Do not store or install the flowmeter Handling Precautions Table of Contents 6F8A0917 6F8A0917 Product Inspection Product Inspection and StorageStorage 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 From mains power WiringUrn off mains power before working on pipes Do not conduct wiring work with bare hands Installation Cables Installation Cables External Connections 6F8A0917 Terminal Treatment of Cables Wiring MethodExcitation 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 Wiring InstallationReplacing 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 Names and Functions of Display and Controls Operation switch infrared switchLCD display Instructions Menu display Setting mode Functions of each switchMeasurement 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 Percent display Custom unit display Error message / other message display Mode SwitchingFixed 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 Exciting Current Value Parameters Check / ChangeChecking 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 10,1/6,1/4 2.5 to 6 mm Exciting FrequencyChecking the exciting frequency 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 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 Span Value Range Range type Span value Unit of span Setting sequence of span value range is shown below Span value range setting flowHysteresis Range 3 span value Checking each constantRange 2 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 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 value Output Low Limit SettingChecking the output low limit value setting 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 Input control signal level Checking each setting for digital I/ODigital Output alarm state Digital Output Changing each setting for digital I/O Digital Output alarm status Count Rate Pulse Rate and Pulse Width Pulse width modeCount rate Pulse width Over Spec 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 Checking the preset counter setting Changing the preset count value Changing the preset output function 100 High/low limit value Flow Rate High/Low limit AlarmHigh/low limit alarm On/Off 101 Low-low limit alarm On/Off Checking the high/low limit alarm settingHigh-high limit alarm 102 Changing the high/low limit alarm On/Off 103 Changing the high/low limit value 104 Checking the fluid empty alarm On/Off setting Fluid Empty AlarmSetting the fluid empty alarm 105 Changing the fluid empty alarm On/Off setting 106 Self-Diagnosis Function Self-diagnosis function On/Off setting107 Checking the self-diagnosis alarm setting Alarm output factor setting108 Changing the self-diagnosis function setting 109 Rate-of-change limit value Checking the rate-of-change limit settingRate-of-Change Limit Value and Control Time 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 Loop Check Fixed value output On/Off settingFixed output mode can be selected by the setting as follows Fixed current output value Fixed pulse output value Checking the fixed output function setting115 Changing the fixed output function 116 Changing the fixed output constant 117 Still Water Zero Adjustment Zero Adjustment118 119 Checking the zero offset adjustment value Zero Offset AdjustmentHow to calculate the zero offset value 120 Changing the zero offset adjustment value 121 Calibration Items Mag-Prover Calibration122 Checking the zero point Converter Check / Calibration1 0% Flow Rate Calibration Zero Calibration Calibrating the zero point 124 2 50% Flow Rate CalibrationChecking the 50% flow rate value 50% flow rate value can be checked only Calibrating the span value 3 100% Flow Rate Calibration Span CalibrationChecking the span value 125 126 Checking the Exciting Current ValueMonitor value of the exciting current can be checked Function Description 127 Digital Input option Digital I/O SpecificationsDigital Outputs 128 Totalizer and Pulse Output 129 130 Totalizer operation using digital input signals 131 Multi-Range Functions 132 Single direction internal automatic switching, 4 ranges Output performance when multiple ranges are used133 134 Output when switched from Reverse toForward direction Direction Single direction external signal switching, 2 ranges 135 136 Single direction external signal switching, 4 ranges 137 138 Flow Rate High/Low Limit Alarm OutputFlow rate high/low limit alarm output performance Case of Single range Case of Multi-range setting 139 140 Alarm output state described in 8.2.14 Digital I/O Function Fluid Empty Alarm OutputOutput when an alarm is generated 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 Connection with the HHT terminal Communications Function149 150 Connection to the Converter Main Unit Procedure for Communication with HHT 151 Use a shielded cable CVV-S, etc for wiring Wiring cableInterference on 4 to 20mA current signal Current output load Setting error Diagnosis and AlarmsDiagnostic messages High/low limit alarm Fluid empty alarm Process error alarm154 Self-diagnosis error 155 Output When an Error or Alarm Occurs 156 Maintenance and Inspection Maintenance Operative life Check / Replacement of power supply unitProduct disposal 158 Flow rate is not indicated Troubleshooting159 Flow rate indication is not correct 160 Flow rate indication is not stable 161 When switch operation is unable 162 163 Principle of Operation= K × B × D × Q Detector Combined Specifications SpecificationsSpecifications 164 165 Converter specifications 166 167 168 Model Number Table 169 170 Electromagnetic Flowmeter Converter LF232 Type Outline Drawing171 Gross mass approx lb8kg including a mounting plate 172 FCF50017