Toshiba LF414 Troubleshooting, Flow rate is not indicated, －４４－, ６Ｆ８Ａ０８７０, Is the fuse burnt?

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６Ｆ８Ａ０８７０

7.2 Troubleshooting

If a problem occurs while using the LF414/LF600F, LF414/LF610F, LF414/LF620F and LF414, follow the flowcharts described below.

You may find a way to solve the problem. The flowcharts are based on three symptoms (1) to (3). If you cannot solve the problem, contact your nearest Toshiba representative.

7.2.1 Flow rate is not indicated

START

Are power supplies correct NO for each device?

YES

Are power and I/O cables NO installed correctly?

YES

Use the correct power supply for each device.

Install the cables correctly.

Refer to Chapter 5, “Wiring.”

Is the fuse burnt?

YES

Replace the fuse with a new one.

NO

Is the flow range correctly set? NO

	YES
	Is the flow direction match	NO
	with the arrow mark on the	NO
	with the arrow mark on the
	detector?
	YES

Contact your nearest Toshiba representative.

Set correctly.

Refer to combined converter's manual.

Install the detector correctly. Refer to Chapter 4, “Installation”

－４４－

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Contents ６Ｆ８Ａ０８７０－１－６Ｆ８Ａ０８７０About Safety Precautions Integral type LF414/LF600F, LF414/LF610F, LF414/LF620FExplanation of signal words SAFETY PRECAUTIONSSafety symbols －２－－３－ SAFETY PRECAUTIONS Safety Precautions for Installation and WiringDON’T „ Do not modify or disassemble the enclosureSafety Precautions for Installation and Wiring SAFETY PRECAUTIONS continuedDON’T －４－Warranty and Limitation of Liability Safety Precautions for Maintenance and InspectionUsage limitation －５－－６－ Handling Precautions・Places where excessive vibration or mechanical shock occurs 2 Wire cables correctly and securely－７－ Handling Precautions continued－８－ Table of Contents1.1 Product Inspection 1. Product Inspection and Storage1.2 Strage －９－2. Overview Features－１０－ 5 Intelligent functions3.1 Appearance 3. Names of Parts3.1.1 Appearance of LF414/LF600F, LF414/LF610F Integral 1 Meter size of 1/2 inch 15mm－１２－ 2 Meter size of 1inch 25mmFigure 3.1.2 Appearance of LF414/LF600F, LF610F Meter size 1 inch25mm Ground terminal for converter－１３－ 3 Meter size of 1 1/2 to 4 inch 40 to 100mmFigure 3.1.3 Appearance of LF414/LF600F, LF610F Meter size 1 1/2 to 4 inch 40 to 100mm－１４－ 4 Meter size of 6 and 8 inch 150 and 200mmLifting Lugs provided－１５－ 3.1.2 Appearance of LF414/LF620FFigure 3.1.5 Appearance of LF414/LF620F Meter size 1/2inch15mm Ground terminal for converter Flow direction arrow Detector－１６－ Figure 3.1.6 Appearance of LF414/LF620F Meter size 1 inch25mmGround terminal for converter Flow direction arrow Figure 3.1.7 Appearance of LF414/LF620F －１７－Figure 3.1.8 Appearance of LF414/LF620F －１８－Meter size 6 and 8 inch 150 and 200mm Ground terminal for converter Lifting LugsSeparate 1 Meter size of 1/2 inch 15mm 3.1.3 Appearance of LF414－１９－ Signal cablefor Signal cable －２０－Figure 3.1.10 Appearance of LF414 Meter size 1 inch25mm for Excitation cableSignal cable －２１－Figure 3.1.11 Appearance of LF414 Excitation cable－２２－ Figure 3.1.12 Appearance of LF414Meter size 6 and 8 inch150 and 200mm 3.2 Construction of the terminal blocks Signal cable terminal3.2.2 Terminal Block Construction of LF414 Type －２３－Safety Precautions for Installation 4. Installation－２４－ „ Use an appropriate device to carry and install4.2 Mounting Procedure 4.2.1 Pipe checks 4.1 Notes on Selecting the Installation Location－２５－ 2. Avoid places where excessive pipe vibration occurs－２６－ Figure 4.2 Example of Pipe Fixing ProcedureFigure 4.3 Model Diagram of Unsupported Pipes 4.2.2 Installation Procedure －２７－Figure 4.4 LF414 flowmeter detector piping connections Table 4.1 Bolt length and Nut tightening torque －２８－1b Optional “Mount Anywhere” Installation Mount-Anywhere Technology 1a Ideal Upstream Straight Pipe Length Installation Requirements4.3 Piping Connections L=5D－３０－ 2 Pipe OrientationFigure 4.6 Installation position of the detector Figure 4.5 Detector Piping Orientation4 Preventing an Empty Pipe Condition 3 Flow Direction－３１－ Figure 4.7 Flow direction arrow on the detector1 Grounding of the LF414/LF620F type 4.4 Grounding－３２－ Figure 4.10 Grounding the LF414/LF620F Type－３３－ 2 Grounding of the LF414 type5.Wiring Safety Precautions for Wiring－３４－－３５－６Ｆ８Ａ０８７０„ Install a switch and fuse to isolate the independently from power equipment. 100 ohm5.1 Cables Notes on wiring－３６－ Table 5.1 Installation Cables5.3.2 Notes on Wiring of the Separate type LF414 5.3 Notes on Wiring 5.3.1 Notes on Instrumentation-Converter Wiring5.2 External Device Connections and Grounding －３７－1 Power cable, current output cable, digital I/O cables 5.4 Wiring 5.4.1 Terminal Treatment of CablesSeparate 2 Excitation cable －３８－Notes on signal cable shield processing work 3 Connecting the input signal cable－３９－ Figure 5.3 Terminal Treatment of Flow Rate Signal Cable5.4.2 Cable Connection －４０－Figure 5.5 Connecting a Cable to Terminal Block Preparatory check 6. Operation－４１－ „ Check the wiring between the converter and related instrumentsSafety precaution for Maintenance and Troubleshooting 7. Maintenance and Troubleshooting－４２－ „ Do not conduct wiring work when power is applied„ Cleaning 7.1 MaintenanceCheck/Replacement of the display unit materials7.2.1 Flow rate is not indicated 7.2 Troubleshooting－４４－ START Are power supplies correct NO for each device? YES－４５－ 7.2.2 Flow rate indicated is not correctPerform the zero adjustment Refer to combined converters manual Clean the inside of the detector pipe－４６－ 7.2.3 Flow rate indication is not stableIs power supply voltage Use a power supply within the specified range8. Principle of Operation －４７－Square-Wave Excitation Figure 8.1 Principle of Operation 9.1Specifications 9. Specifications－４８－ Measurement range in terms of flow velocity－４９－ Electrical conductivity μS/cmFigure 9.1 Electrical Conductivity vs. Cable Length Table 9.1 Standard Flow Range －５０－Table 9.2 Flow velocity vs. flow volume －５１－Unit gal/min Unit m3/hTable 9.3 Type Specification Code －５２－9.2 Type Specification Code Table 9.4 Type Specification Code Exciting Cable and Signal Cable －５３－Exciting cable length Nominal cross-sectional area Overall diameter 10.1 Outline dimensions of LF414/LF600F, LF414/LF610F 10. Outline Dimensions1 Meter size of 1/2 inch 15mm 2 Meter size of 1 inch 25mm－５５－ 3 Meter size of 1 1/2 to 8 inch 40 to 200mm10.2 Outline dimensions of LF414/LF620F －５６－Waight approx 9 lb 4kg －５７－ 10.3 Outline dimensions of LF414 －５８－Waight approx 7 lb 3kg －５９－－６０－ Appendix 1-1 A system block diagram for LF414/LF600F, LF414/LF610F－６１－ 1-2 A system block diagram for LF414/LF620F－６２－ 2-1 A system block diagram for LF414Distributor Address Name －６３－Phone number （ Product codeFCF50017