Manuale d’uso / di manutenzione del prodotto LF546 del fabbricante Toshiba
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6 F 8 A 0 9 3 4 Electromagnetic Flowmeter CAPACITANCE TYPE MODEL LF516 / LF546 INSTRUCTION MANUAL NOTES Before using the equipment, please read this manual carefully and understand the contents, and then use the equipment correctly. • NEVER attempt to operate the equipment in any ways that are not described in this instruction manual.
− 1 − 6 F 8 A 0 9 3 4 NOTICE We thank you very much for your purchase of our LF516/LF546 CAPACITANCE TYPE series electromagnetic flowmeter. This instruction manual describes the notes on using an electromagnetic flowm eter , installation, configuration and maintenance.
− 2 − 6 F 8 A 0 9 3 4 SAFETY PRECAUTIONS Safety signs and labels affixed to the product and/or described in this manual give important information for using the product safely. They help prevent damage to property and obviate hazards for persons using the product.
− 3 − 6 F 8 A 0 9 3 4 SAFETY PRECAUTIONS (continued) Safety Precautions for Hazardous Locations WARNING Do not disconnect while circuit is live unless location is known to be nonhazardous. DON ’ T Live part of electric circuit or a high temperature department can cause explosion .
− 4 − 6 F 8 A 0 9 3 4 Safety Precautions for Installation and Wiring CAUTION Install a switch and fuse to isolate the LF516/LF546 from m ains power. Use an appropriate device to carry and install the LF516/LF546. DO Power supply from m ains power can cause electric shock or circuit break-down .
− 5 − 6 F 8 A 0 9 3 4 SAFETY PRECAUTIONS (continued) Safety Precautions for Maintenance and Inspection CAUTION Do not touch LF516/LF546 main body when high temperature fluid is being measured. Do not conduct wiring work when power is applied .
− 6 − 6 F 8 A 0 9 3 4 Handling Precautions To obtain the optim um perform ance from LF516/LF546 flow meter for years of continuous operation, observe the following precautions. (1) Do not store or install the flowmeter in : ・ Where there is direct sunlight .
− 7 − 6 F 8 A 0 9 3 4 Handling Precautions (continued) (6) Observe the following precautions when you open the converter housing cover : • Do not open the cover in the open air unprotected against rain or wind . This can cause electric shock or cause damage to the flowmeter electronics .
− 8 − 6 F 8 A 0 9 3 4 Table of Contents 1. Product Inspection and Storage................................................................................................. ........................... 11 1.1 Product Ins pecti on ....................
− 9 − 6 F 8 A 0 9 3 4 8.1 Parameter Se tting Ite ms ........................................................................................................ ........................ 53 8.2 Check/Change of Parame ters ..............................
− 10 − 6 F 8 A 0 9 3 4 11. Communications Function ........................................................................................................ .......................... 131 11.1 Connections with HHT Term inal ........................
− 11 − 6 F 8 A 0 9 3 4 1. Product Inspection and Storage 1.1 Product Inspection LF516/LF546 electromagnetic flowm eter is shipped in a cardboard container filled with shock-absorbing materials. Open the package carefully and check as follows: Make sure the following items are included in the package.
− 12 − 6 F 8 A 0 9 3 4 2. Overview LF516/LF546 electromagnetic flowmeter can be use in the following hazardous (classified) locations. Class Ⅰ , Division 2, Groups A, B, C and D, Class Ⅱ , Div.
− 13 − 6 F 8 A 0 9 3 4 3. Names of Parts 3.1 Appearance of LF516/LF546 Figure 3.1.1 Appearance of LF516/LF546 IMPORTANT The cable connections are not provided in the conduit port of this apparatus. Please prepare yourself for the cable connections, wh ich could be used in Division2 hazardous locations.
− 14 − 6 F 8 A 0 9 3 4 3.2 Construction of the terminal blocks Terminal Block Construction of LF546 Converter When you rem ove the terminal block cover shown in the figure "A ppearance of LF516/LF546", you can see the converter terminal block as shown below.
− 15 − 6 F 8 A 0 9 3 4 4. Installation Safety Precautions for Installation WARNING Do not activate live circuits under environment of explosive atmospheres. DON’T Live part of electric circuit or a high temperature department can cause explosion .
− 16 − 6 F 8 A 0 9 3 4 4.1 Notes on Selecting the Installation Location Do not store or install the flowmeter in : 1. Places within the imm ediate proximity of equipm ent producing electrical inte.
− 17 − 6 F 8 A 0 9 3 4 4.2 Mounting Procedure 1. Avoid places within the immediate proxim ity of equipment producing electrical interference (such as motors, transformers, radio transmitters, electrolytic cells, or other equipment causing electromagnetic or electrostatic interference ).
− 18 − 6 F 8 A 0 9 3 4 (2) Preventing an Empty Pipe Condition Fix the relevant pipes installed on both sides of the de tector by attach fittings, etc.
− 19 − 6 F 8 A 0 9 3 4 4.2.2 Installation Procedure To mount the LF516/LF546, place it between the upstream and downstream pipe flanges and tighten it with flange bolts and nuts. See Figure 4.4 and follow the procedure below: 1. Insert two lower mounting bolts through the clearance holes in the upstream (or downstream ) pipe flange.
− 20 − 6 F 8 A 0 9 3 4 Table 4.1 Bolt length and Nut tightening torque ANSI class 150 ANSI class 300 Through Bolts Through Bolts Meter size P.C.S Dia- meter Length [mm] Tightening torque [N ･ m] P.
− 21 − 6 F 8 A 0 9 3 4 4.3 Piping Connections (1) Required Pipe Length If various joints are used upstream of the detector outlet, the straight pipe length as shown in Table 4.2 is required. Table 4.2 Required straight pipe length on the upstream side L: Required straight pipe length—straight pipe length plus half length of the detector.
− 22 − 6 F 8 A 0 9 3 4 (2) Pipe Orientation The detector may be installed in horizontal, vertical or sloping pipe runs as shown in Figure 4.5. However, except for horizontal installation, fluid should flow from lower to upper directions. See Figure 4.
− 23 − 6 F 8 A 0 9 3 4 (3) Flow Direction Install the detector in accordance with the flow direction arrow on the detector. See Figure 4.7. If the actual flow runs opposite to the specified flow direction, the following display and output appears.
− 24 − 6 F 8 A 0 9 3 4 4.4 Grounding CAUTION Do not wire cables and replace parts when power is supplied. Do not work on piping and wiring with wet hands . DON’T Wiring work and replacing parts in the power-on state may cause electric shock.
− 25 − 6 F 8 A 0 9 3 4 5. Wiring Notes on wiring WARNING DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS LOCATION IS KNOWN TO BE NONHAZARDOUS. DON’T Live part of electric circuit or a high temperature departm ent can cause explosion . Do not activate circuits while assembly of all com ponents is not over.
− 26 − 6 F 8 A 0 9 3 4 CAUTION Install a switch and fuse to isolate the LF516/LF546 from m ains power. Turn off mains power before conducting wiring work. DO Power supply from m ains power can cause electric shock or circuit break-down . DO Wiring while power is applied can cause electric shock .
− 27 − 6 F 8 A 0 9 3 4 CAUTION (1) Select the cable run location so they are away from electrical equipment (motors, transformers, or radio transmitters) which causes elect romagnetic or elect rostatic interference . (2) Deterioration of flowmeter circuit insulation occurs if the converter interior or cable ends get wet or humidified.
− 28 − 6 F 8 A 0 9 3 4 5.2 External Device Connections and Grounding The terminal board connections of LF516/LF546 Flowme ter are shown in Figure 5.1. Proceed with wiring as described in Section 5.4, “Wiring Procedure.” Figure 5.1 External Wiring Schematic Diagram * Use a heavy copper braid or wire (cross-sectional area 5.
− 29 − 6 F 8 A 0 9 3 4 5.3 Notes on Wiring Notes on Instrumentation-Converter Wiring • To avoid 2-point grounding, ground the shield of output cabl e basically at the receiving side. • Use a grounding wire of IV wire 5.5m m 2 or m ore. The size of the external grounding terminal screws is M4.
− 30 − 6 F 8 A 0 9 3 4 5.4 Wiring IMPORTANT The cable connections are not provided in the conduit port of this apparatus. Please prepare yourself for the cable connections wh ich could be used in Division2 hazardous locations. CAUTION Do not wire cables and replace parts when power is supplied.
− 31 − 6 F 8 A 0 9 3 4 5.4.2 Cable Connection Connect and install the terminal-treated cables to the term inal block by the following procedure. * Connect the cables to the terminal block securely. A loose connection may cause incorrect measurem ent.
− 32 − 6 F 8 A 0 9 3 4 5.5 Digital I/O Connections Digital I/O terminals consist of contact output term inals ( DO1 and DO2 ), voltage signal input terminal ( DI ), and signal com mon terminal ( COM ). Each terminal ( DO1 , DO2 and DI ) is isolated from internal circuits.
− 33 − 6 F 8 A 0 9 3 4 6. Operation CAUTION Do not touch the terminal board when pow er is supplied. Do not touch the main body when high temperature fluid is being m easured. DON’T Touching the terminal board when power is supplied can cause electric shock.
− 34 − 6 F 8 A 0 9 3 4 6.2 Zero Adjustment To conduct zero adjustment of the flowm eter, the fluid in the detector pipe must be held still . There are three different ways to start the zero adjustment: (1) Pressing a combination of control keys for the model with LCD display See 8.
− 35 − 6 F 8 A 0 9 3 4 7. LCD Display and Controls 7.1 Name and Function of Each Part of LCD Display The LDC display and infrared switches (hereafter, calle d "control key") in front of the converter allows you to view or set various constants such as measured values and param eters.
− 36 − 6 F 8 A 0 9 3 4 ● LCD electronically rotatable display 8-line × 14-character liquid crystal display . The backlit display provides an easy-to-read indication even under poor lighting conditions . Instantaneous flow rates or totalized flow in the measurem ent mode or configuration param eters in the setting mode can be displayed.
− 37 − 6 F 8 A 0 9 3 4 ● Setting switch The control keys allow you to perform converter control and setting, without opening the converter housing. These three controls keys function differently depending on the current display screen. The functions of these control keys are displayed on the display screen.
− 38 − 6 F 8 A 0 9 3 4 7.2 Display Format In the m easurement m ode, the m easured data is displayed using the menu item s set by the Display 1 ( DSPL1 ) and Display 2 ( DSPL2 ). (For display settings, see 8.2.6 "Display Setting." ) 1. Flow rate / Flow velocity display - 1 0 .
− 39 − 6 F 8 A 0 9 3 4 Note 1: T otalized flow volume and totalized difference flow volum e are displayed to the least significant digit of the set count rate. (Example1) When the count rate is 0.0001 m 3 : When the measurem ent object flows through 0.
− 40 − 6 F 8 A 0 9 3 4 5. Percent display - 1 2 5 . 0 % 6. Flow rate (When custom unit is selected) - 1 0 . 0 0 * X X X / Y Y Y 7. Range display 1 0 . 0 0 0 R 1 m / s In the range display , the range currently used is displayed (any one of the ranges 1 to 4).
− 41 − 6 F 8 A 0 9 3 4 8. Bar graph display Bar graph can be set only for Display 2. 0 100 R 1 * About Range type, percent display and p ercent value when bar graph is displayed When percent display is used, the % value displayed depends on the flow direction.
− 42 − 6 F 8 A 0 9 3 4 7.3 Basic operations 7.3.1 Mode Change The converter provides the setting m ode and calibration mode as well as the m easurement m ode. T o change the m ode to the setting m ode or to the calibration mode, push the switch. T o return to the measurem ent mode, push the switch from each menu.
− 43 − 6 F 8 A 0 9 3 4 ○ Flow of mode change Numeric value setting screen EXC CUR 0.2000 A Setting mode Counter control mode 1.000 m/s 12345678 FRD Hold down only the center switch for 3 seconds or longer.
− 44 − 6 F 8 A 0 9 3 4 ○ Pulse output setting mode This mode is used to perform continuous param eter settings (automatic operation) regarding pulse outputs. When these param eters are set, pulse output is ready to send out. (1) Digital Output 1 selection screen The function for Digital Output 1 can be selected.
− 45 − 6 F 8 A 0 9 3 4 ○ Explanation about mode change The converter usually works continuously in the m easurement m ode. If you want to set parameters or perform calibration or adjustment, you have to go to the setting mode. T o enter the setting m ode, push the center switch for 3 seconds or more in the m easurement mode.
− 46 − 6 F 8 A 0 9 3 4 ○ Operation timeout function If no operation is m ade for one minute or more while the converter is in the setting m ode, the mode autom atically returns to the measurem ent mode unless the parameters are displayed on the screen.
− 47 − 6 F 8 A 0 9 3 4 Switch operation Display exam ple Description A:DETECTOR 1 EXC CUR 2 SIZE 3 EXC FREQ 4 FLOW DIR 5 EXIT Pushing from the menu configuration selection screen takes you to the menu screen. The cursor is positioned at the function display ( [A: DETECT OR] in this example).
− 48 − 6 F 8 A 0 9 3 4 Switch operation Display exam ple Description R1 10.0000 m/s Push to select the item you want to check or change. The screen changes and the currently set item appears for you to check. Pushing returns you to the menu screen.
− 49 − 6 F 8 A 0 9 3 4 Switch operation Display exam ple Description R1 5.00000 m/s Pushing when data is temporarily set causes the data to be fixed and executed. After the data is set, the cursor disappears, enabling you to check the set value. C:RANGE 1 R TYPE 2 R1 3 R2 4 R3 5 R4 6 R HYS 7 EXIT Pushing returns you to the menu screen.
− 50 − 6 F 8 A 0 9 3 4 7.4 Configuration Items Selection Table How to check or change each constant of th e converter is shown in the table below . Details of each item are described in the setting item s (A to R) of Chapter 8, "Parameter Settings.
− 51 − 6 F 8 A 0 9 3 4 ○ Detailed configuration When you select " DETAILED " in the m enu configuration selection screen, the check/change menu for each constant setting is expanded as shown in the table below.
− 52 − 6 F 8 A 0 9 3 4 7.5 Password input The converter provides the password function to prohibit som e functions that affect the flow m easurement from being set or adjusted. For the protected functi ons, see the m enu configuration table on the previous page.
− 53 − 6 F 8 A 0 9 3 4 8. Parameter Settings 8.1 Parameter Setting Items T o check or change each constant of the converter, first select the desired setting item described in 7.3.2 “Setting and Calibration.” Proceed as follows for settings in the setting mode.
− 54 − 6 F 8 A 0 9 3 4 8.2 Check/Change of Parameters 8.2.1 Menu Configuration Selection Screen Display example MENU SEL BASIC DETAILED PREVIEW ZERO ADJ PLS SET Y ou can select the kind of menu configuration. For menu item s of configuration, see 7.
− 55 − 6 F 8 A 0 9 3 4 8.2.2 Exciting Current Value The exciting current value can be checked/changed by the following procedures. Be sure to match the exciting current value with the value specified for the combined detector . Specifying any other value may cause an error.
− 56 − 6 F 8 A 0 9 3 4 Switch operation Display exam ple Description STEP6 EXC CUR 0.2150 A SET OK? Pushing shows a message to confirm the setting is OK or not. If OK , push . If you need to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 57 − 6 F 8 A 0 9 3 4 Note 1:The meter size display loops as shown below: ① 25mm 40mm 5 0 m m 80mm 1 0 0 m m ② ② 1inch 1.5inch 2inch 3inch 4inch ① Note 2: When the meter size is changed, range unit and count rate will be forcefully changed as described below .
− 58 − 6 F 8 A 0 9 3 4 8.2.4 Exciting Frequency Proceed as follows to check the Exciting Frequency Switch operation Display exam ple Description A:DETECTOR 1 EXC CUR 2 SIZE 3 EXC FREQ 4 FLOW DIR 5 EXIT Select " EXC FREQ " from the setting item selection menu.
− 59 − 6 F 8 A 0 9 3 4 Switch operation Display exam ple Description STEP1 FLOW DIR NORMAL The currently set flow direction ( NORMAL in this example) appears. T h e n p u s h . * Pushing returns you to the setting menu. STEP2 FLOW DIR NORMAL The switches at the bottom change.
− 60 − 6 F 8 A 0 9 3 4 COUNT : displays the totalized flow counts (up to 8 digits). RANGE : displays the range number being used for m easurement (1 to 4). GP ARH : displays the measured value (% value) in bar graph. In addition, the range number being used for m easurement is also displayed.
− 61 − 6 F 8 A 0 9 3 4 / s / m i n / h / d For Display 2 unit setting, select DSPL2 from the setting m enu. ● How to select the display digit setting When you select flow velocity or flow rate (c ustom unit is included), the screen autom atically moves to the display digit setting screen.
− 62 − 6 F 8 A 0 9 3 4 For example, if the setting range is 10m/s and display digit setting is 1/100 , the m easured value will be displayed to the first decimal place.
− 63 − 6 F 8 A 0 9 3 4 Note: The setting item for the third unit (flow volum e direction code) changes cyclically as shown below. B(bi-directional) F(forward direc tion fixed) R(reverse direction fixed) D ( d i f f e r e n c e f l o w r a t e ) For Display 2 setting, select DSPL2 from the setting m enu.
− 64 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP4(=END) CS VAL 2.25000 SET OK? Pushing shows a message to confirm whether the setting is OK or not. If OK , push . If you need to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 65 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP4(=END) CS UNIT XXX/ZZ Z SET OK? Pushing when the cursor is positioned on the 7th character shows a message to confirm whether the setting is OK or not. If OK , push . If you want to redo the setting, push .
− 66 − 6 F 8 A 0 9 3 4 ● Span Y ou can set the span for actual flow rate or flow velocity . (1) Setting range The span can be set within 0.5 m/s to 10 m/s in terms of flow velocity .
− 67 − 6 F 8 A 0 9 3 4 ● Range hysteresis The hysteresis is the dead band used when multiple ranges are switched. Y ou can set the hysteresis within the range of 0 to 25% in increments of 0.1% . The hysteresis is set only when automatic selection of m ultiple ranges is used.
− 68 − 6 F 8 A 0 9 3 4 Switch operation Display example Description C:RANGE 1 R TYPE 2 R1 3 R2 4 R3 5 R4 6 R HYS 7 EXIT Pushing returns you to the setting menu.
− 69 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP5(=END) R TYPE 2F-2R SET OK? When you push , a message appears to confirm whether the setting is OK or not. If OK , push . If you want to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 70 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP6 R2 1 36.000 L/min Push to change the number of the digit. P u s h t o m o v e t h e d i g i t . STEP7(=END) R2 100.000 L/min SET OK? When you push , a message appears to confirm whether the setting is OK or not.
− 71 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP3 R HYS 0 5 .0 % P u s h t o m o v e t h e c u r s o r t o t h e desired digit and push to change the number of the digit. STEP4(=END) R HYS 05.0 % SET OK? When you push , a message appears to confirm whether the setting is OK or not.
− 72 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP2 DAMPING 0 5.0 S The switches at the bottom change. ( a r e s h o w n . ) At the same tim e, the cursor appears. STEP3 DAMPING 1 0 .0 S P u s h t o m o v e t h e c u r s o r t o t h e desired digit and push to change the number of the digit.
− 73 − 6 F 8 A 0 9 3 4 ● Changing the rate-of-change limit The following is an example to change the rate-of-change lim it value from 10.0% to 15.0% . Switch operation Display example Description D:FILTER 1 DAMPING 2 LIM RATE 3 LIM TIME 4 EXIT Select " LIM RATE " from the setting item selection menu.
− 74 − 6 F 8 A 0 9 3 4 8.2.12 Low Cutoff The low cutoff is the function to set the current output to zero forcefully if the fl ow rate is equal to or less than the low cutoff value set near 0%. The low cutoff value can be set within the range 0 to 10% in increments of 0.
− 75 − 6 F 8 A 0 9 3 4 8.2.13 Display Low Cutoff When low cutoff is set in 8.2.12 “Low Cutoff,” this function determines whether to use the low cutof f processing for displayed values. Y ou can select the display low cutoff setting from the item s in the table below .
− 76 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP4(=END) DSPL SET LOW CUT SET OK? When you push , a message appears to confirm whether the setting is OK or not. If OK, push . If you want to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 77 − 6 F 8 A 0 9 3 4 8.2.15 Manual Zero Adjustment This function is used to perform zero adjustment si m ply by comparing the output value of the converter with the process value of other instruments without stopping the process of m easurement.
− 78 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP3 MANUAL -002. 5 % P u s h t o m o v e t h e c u r s o r t o t h e desired digit and push to change the symbol or num ber of the digit. STEP4(=END) MANUAL -002.5 % SET OK? Pushing shows a message to confirm whether the setting is OK or not.
− 79 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP1 ALM 4-20 UNDER 3mA The currently set value ( UNDER 3.0mA in this example) appears. T h e n p u s h . * Pushing returns you to the setting menu. STEP2 ALM 4-20 UNDER 3mA The switches at the bottom change.
− 80 − 6 F 8 A 0 9 3 4 Y ou can check or change the output low limit as described below . The following is an example to change the output low lim it value from 4.0mA to 2.4mA . Switch operation Display example Description G:4-20mA 1 ALM 4-20 2 LOW LIM 3 EXIT Select " LOW LIM " from the setting item selection menu.
− 81 − 6 F 8 A 0 9 3 4 ● Digital output functions Selection items Digital output functions NO USE Not used H ALM High alarm output L ALM Low alarm output HH ALM High-High alarm output LL ALM Low-Low alarm output RNG SIG1 Range output No. 1 RNG SIG2 Range output No.
− 82 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP2 DO1 FUNC H ALM The switches at the bottom change. ( a r e s h o w n . ) At the same tim e, the cursor appears. (The item indicated by the cursor is highlighted.) T h e n p u s h .
− 83 − 6 F 8 A 0 9 3 4 ● Digital input control signal Y ou can select the detective level of the digital input, as shown below , to control the totalizer and pulse output.
− 84 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP4(=END) DI FUNC CNT ST/SP SET OK? When you push , a message appears to confirm whether the setting is OK or not. If OK, push . If you want to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 85 − 6 F 8 A 0 9 3 4 ● For pulse width setting mode, you can select either AUTO or MANUAL . Depending on this setting, the pulse width setting varies as shown in the table below: Selection ite.
− 86 − 6 F 8 A 0 9 3 4 Y ou can check or change the count rate and pulse width as described below . The following is an example to change the count rate from 0.01m 3 to 0.9 L . Switch operation Display example Description STEP1 CNT RATE 0.01000 m 3 The currently set count rate ( 0.
− 87 − 6 F 8 A 0 9 3 4 Note 1: The units of count rate change cy clically as shown below: m ³ L m L b b l g a l p t q t Note 2: After the count rate is set, related parameters are automatically s.
− 88 − 6 F 8 A 0 9 3 4 Y ou can check or change the preset count as described below . The following is an example to change the preset count value from 500 (count) to 1000 (count). Switch operation Display example Description K:PRESET C 1 PRST VAL 2 OUT MODE 3 EXIT Select " PRST VAL " from the setting item selection menu.
− 89 − 6 F 8 A 0 9 3 4 8.2.22 Preset Mode The preset mode determ ines the function wh en the totalizer reaches the preset count. The present mode can be set from the items shown below . ● Preset mode Selection items Preset mode HOLD Holds the output value.
− 90 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP2 OUT MODE HOLD The switches at the bottom change. ( a r e s h o w n . ) At the same tim e, the cursor appears. (The item indicated by the cursor is highlighted.) T h e n p u s h .
− 91 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP2 H SET OFF The switches at the bottom change. ( a r e s h o w n . ) At the same tim e, the cursor appears. (The item indicated by the cursor is highlighted.) T h e n p u s h .
− 92 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP3 H VAL +10 3 .0 % P u s h t o m o v e t h e c u r s o r t o t h e digit you want to change and push to change the number of the digit. STEP4(=END) H VAL +103.0 SET OK? When you push , a message appears to confirm whether the setting is OK or not.
− 93 − 6 F 8 A 0 9 3 4 ● Changing the Mag-Prover’s self-diagnosis function setting The following is an example to change the Mag-Prover’s self-diagnosis setting from OFF to ON . Switch operation Display example Description N:SELF CHK 1 EMPTY 2 SELF CHK 3 CONV ALM 4 EXIT Select " SELF CHK " from the setting item selection menu.
− 94 − 6 F 8 A 0 9 3 4 Operation when fixed output is set to ON Current output Output is the fixed current output value. Pulse output Output is the fixed pulse rate pulse signal. Digital output other than pulse output Status in hold Display Display 2 screen: Used to indicate the fixed output (Note) Display example: * 3 0 0 0PPS* * 2 0 .
− 95 − 6 F 8 A 0 9 3 4 Switch operation Display example Description STEP4 FIX SET ON SET OK? When you push , a message appears to confirm whether the setting is OK or not. If OK, push . If you want to redo the setting, push . Pushing cancels the setting operation and exits the setting screen.
− 96 − 6 F 8 A 0 9 3 4 Note 1: If you try to set a value outside of the range, 2.4mA or 24mA (in the case of fixed current output) or 3000pps (in the case of fixed pulse output) will be forcibly set. Note 2: The pulse width set in Section 8.2.20 is used for fixed pulse output.
− 97 − 6 F 8 A 0 9 3 4 * However , if a wrong password is entered when the mode is changed from the measuring mode to the setting mode, *** appears and the password cannot be checked. Switch operation Display example Description PASSWORD *** The currently set password is displayed as *** and the password cannot be checked.
− 98 − 6 F 8 A 0 9 3 4 8.2.27 LCD Adjustment This section describes how to set the LCD density adjustm ent value for the converter display . The LCD density can be set in 5 levels. LCD density adjustment level 1 2 3 4 5 L C D d e n s i t y Light Dark The LCD density adjustment value is set to " 3 " when shipped from the factory .
− 99 − 6 F 8 A 0 9 3 4 8.2.28 Switch Position Setting The switch position of the converter display can be set. The position setting of the switch enables the display remains the sam e in orientation, regardless of which direction relative to the piping the converter is installed.
− 100 − 6 F 8 A 0 9 3 4 The following is an example to change the switch position setting from BOTTOM to TOP . Switch operation Display example Description P:OTHERS 1 PASSWORD 2 LCD ADJ 3 SW POSN 4 EXIT Select " SW POSN " from the setting item selection menu.
− 101 − 6 F 8 A 0 9 3 4 8.3 Parameter initial settings list Unless otherwise specified, the default values for each parameter shown below are set when shipped from the factory: Parameter names Def.
− 102 − 6 F 8 A 0 9 3 4 Setting values for each meter size Range 1 (S I u n i t ) Range 1 (E n g l i s h u n i t ) Meter Size (mm/inch) Ex. Freq (Hz) (m3/h) (m/s) (gal/min) (ft/s) Count rate (gal) 25 / 1 400 6 3.395 75 31.625 1 40 / 1.5 200 15 3.316 175 28.
− 103 − 6 F 8 A 0 9 3 4 9. Mag-Prover-Calibration 9.1 Calibration Items When you check or calibrate the converter or check the excitation current, you have to change the m ode to the calibration mode. Y ou can check or change the zero and span of the converter and the excitation current value as described below .
− 104 − 6 F 8 A 0 9 3 4 9.2 Calibration Using Mag-Prover ’ s Built-In Signal Source 9.2.1 0 % Flow Rate Calibration (Zero Calibration) Using Mag-Prover ’ s internal calibration circuit, 0% flow rate calibration (hereafter called zero calibration) can be performed.
− 105 − 6 F 8 A 0 9 3 4 9.2.2 50 % Flow Rate Calibration Using Mag-Prover ’ s internal calibration circuit, 50% flow rate calibration can be performed. For calibration procedure, see the calibration procedure fo r 0% flow rate. (For 50% flow rate calibration, select "CAL 50" from the setting menu.
− 106 − 6 F 8 A 0 9 3 4 10. Functional Description The LF516/LF546 Electromagnetic Flowm eter is equipped with two contact output term inals (digital output terminals ( DO1 , DO2 )) and one external input terminal (digital input ( DI ), optional), enabling you to use various functions, such as pulse output and alarm output.
− 107 − 6 F 8 A 0 9 3 4 10.1 Digital I/O Specifications The specifications of the digital I/O terminals for the converter for electrom agnetic flowmeter: LF546 are as follows: Digital Output 1.
− 108 − 6 F 8 A 0 9 3 4 10.2 Totalizer and Pulse Output To use the totalizer and pulse output fo r external use, proceed as follows. Count rate and Pulse Width Setting Set the flow volume per count (pulse) (count rate) and the pulse width. See 8.2.
− 109 − 6 F 8 A 0 9 3 4 Note 1: Example of count rate setting range: The count rate can be set within the range from the m inimum value (36000000 pulse/h) to the maxim um value (3.6 pulse/h). (Example) In the case of range 108m 3 /h (0.03m 3 /s), Minimum value (for 10800000 pulse/h): 108 (m 3 /h) / 10800000 (pulses/h) = 0.
− 110 − 6 F 8 A 0 9 3 4 Totalizer Operation ● Operation using the operation switches You can start, stop or clear the totalizer as described below.
− 111 − 6 F 8 A 0 9 3 4 Note 1:Since the flow volume direction code is B (Bidirectional forward/reverse automatic selection), • When you select forward/reverse multi-range, forward direction tot.
− 112 − 6 F 8 A 0 9 3 4 10.3 Multi-range Function Four types of multiple ranges shown below can be selected by setting the range ty pe: (1) Unidirectional flow , automatic selection of m ultiple r.
− 113 − 6 F 8 A 0 9 3 4 Output performance of multi-range functions 14. Automatic selection of unidirectional flow multi-range with an internal signal Range output No.1 ON OFF ON OFF Range output No.2 ON OFF ・ Current output when fluid flows in the reverse direction is the value set for the output low limit (any one of 2.
− 114 − 6 F 8 A 0 9 3 4 (2) Automatic selection of bidirectional flow s multi-range with an internal signal Range output No.1 OFF ON ON OFF Range output No.
− 115 − 6 F 8 A 0 9 3 4 (3) Remote selection of unidirectional flows multi-range with an external signal External signal H level input L level input Range output No.1 ON OFF • Current output when fluid flows in reverse direc tion is the output low limit setting (any one of 2.
− 116 − 6 F 8 A 0 9 3 4 (4) Remote selection of bidirectional flows multi-range with an external signal External signal L level H level H level L level Range output No.
− 117 − 6 F 8 A 0 9 3 4 10.4 Flow Rate High/Low , High-High/Low-Low Alarm Output T o use the flow rate high/low alarm or high-high /low-low alarm output, follow the procedure below .
− 118 − 6 F 8 A 0 9 3 4 High and Low Limit Alarm Output Performance (Same as for High High/Low Low limit Alarm Output) • Single range performance • Multi-range performance In an example shown below, a low limit alarm is set for the Range 2 and a high limit alarm is set for the Range 1.
− 119 − 6 F 8 A 0 9 3 4 10.5 Preset Count Function When the totalizer count reaches the preset count value, the converter outputs a contact signal. Proceed as follows to use the preset count function. Totalizer setting Refer to 10.2 “Totalizer and Pulse Output” to set necessary settings fo r totalizer.
− 120 − 6 F 8 A 0 9 3 4 Preset count output performance (1) The following is an exam ple for totalizer flow c ounts output in which the totalizer is reset with an external signal (when preset output status level hold mode is set (contact ON )).
− 121 − 6 F 8 A 0 9 3 4 (2) The following is an exam ple for totalizer flow c ounts output in which the totalizer is reset with an external signal (when one-shot pulse output mode is set).
− 122 − 6 F 8 A 0 9 3 4 (3) The following is an example for one-shot pulse output. Setting preset count:100 Input/Output signal time chart * Preset output goes ON when the count value ex ceeds the preset value of 100 and the preset output goes OFF when its width reaches the set pulse width .
− 123 − 6 F 8 A 0 9 3 4 Note: When the one-shot pulse output function is selected, if its pulse width is large compared with the update period of the p reset value. The output stays ON. To make sure to output as one-shot pulse, set the preset val ue reach interval to be 2 signals or more of the pulse width setting value.
− 124 − 6 F 8 A 0 9 3 4 10.6 Remote Zero Adjustment On-stream zero adjustm ent in a zero flow rate cond ition can be started with an external signal.
− 125 − 6 F 8 A 0 9 3 4 10.8 Converter Failure Alarm If any one of the following errors occurs in a sel f-diagnosis sequence, the converter issues an alarm using a contact output.
− 126 − 6 F 8 A 0 9 3 4 10.9 Multiple range high/low limit alarm function (option) The procedure to use multiple range high/low lim it alarm is shown below. Range setting ・ Set the range in accordance with 8.2.9 Span (range) in the following order.
− 127 − 6 F 8 A 0 9 3 4 Multiple range high/low limit alarm output Note 1: Range changes to Small range when range select signal is H level, and to Large range in L level. Note 2: High-high/low-low limit alarm is activat ed when Small range is selected.
− 128 − 6 F 8 A 0 9 3 4 10.10 Custom unit function (1) Display of flow rate The procedure to display flow rate by the custom unit is shown below. Example : In the case of custom unit [dL(deciliter)/min] . Custom coefficient setting ・ Set the custom coefficient in accordance with 8.
− 129 − 6 F 8 A 0 9 3 4 (2) Span setting Setting of 8.2.7 “Custom Coefficient Setting” and 8.2.8 “Custom Unit Setting” is applied to the custom coefficient and unit sam e as (1)Display of flow rate . Example : In the case of custom unit [dL(deciliter)/min] .
− 130 − 6 F 8 A 0 9 3 4 Note1 : Even if the custom unit is selected, the current output does not change unless the span value is changed. Display example Description R1 2.
− 131 − 6 F 8 A 0 9 3 4 11.Communications Function LF546 Electromagnetic Flowm eter converter uses the HAR T*1 protocol to transmit digital signals over the 4-20mA output line. The AF900 hand-held terminal is used to com municate with the LF546 using the HAR T protocol.
− 132 − 6 F 8 A 0 9 3 4 Figure 11.2 Connections to the Converter Unit 1 1.2 Procedure for Communications with HHT This section describes the HHT basic operation procedure for comm unications between the flowmeter and HHT . For details, refer to the HHT instruction manual.
− 133 − 6 F 8 A 0 9 3 4 1 1.3 Notes on Communications ● Current output load (1) Load resistance: 240 to 750 Ω (including the communications line resistance) (2) Load capacitance: 0.
− 134 − 6 F 8 A 0 9 3 4 12. Self-Diagnosis and Alarms 12.1 Self-Diagnosis The converter has a self-diagnosis function to detect e rrors, such as setting error , I/O error or converter hardware failure, and shows the resulting error or al arm messages on Display 2 of the screen or on the hand-held terminal (HHT) through com munications.
− 135 − 6 F 8 A 0 9 3 4 ● High/low alarm, high-high/low -low alarm, em pty pipe alarm One of the following m essages appears if the flow rate reading goes out of the set range or an empty alarm is generated. If the high or low limit alarm ON/OFF status is set to OFF , its alarm function (high or low) is disabled.
− 136 − 6 F 8 A 0 9 3 4 ● Converter diagnosis error The converter checks the internal system when pow er is turned on and generates an error if abnormality is found. If multiple errors are found, their m essages will be displayed cyclically . Diagnosis items concerning the excitation circuit are detected using the internal A DC circuit.
− 137 − 6 F 8 A 0 9 3 4 12.2 Output Status for Errors and Alarms Error indication Measured value indication Current output (4-20mA) Totalization pulse output Remarks ROM ERROR (Note 1) − (Note 3) Stopped After power-up, no measurement starts. RAM ERROR − (Note 3) Stopped After power-up, no measurement starts.
− 138 − 6 F 8 A 0 9 3 4 13. Maintenance and Troubleshooting WARNING Do not disconnect while circuit is live unless location is known to be nonhazardous. DON’T Live part of electric circuit or a high temperature departm ent can cause explosion .
− 139 − 6 F 8 A 0 9 3 4 13.1 Maintenance Calibration The converter for electromagnetic flowm eter: LF61*F has a built-in internal calibration circuit that can be used to check the zero and span of the converter for the purpose of instrumentation maintenance, periodic inspection or re-verification of instrument calib ration parameters.
− 140 − 6 F 8 A 0 9 3 4 13.2 Troubleshooting If a problem occurs while using the flowm eter, y ou may find the cause of the problem by a sim ple check. Please follow the flowmeter before you contact a serviceperson. 13.2.1 Flow rate is not indicated.
− 141 − 6 F 8 A 0 9 3 4 13.2.2 Flow rate indication is not correct. Is the flow range correctly set? Set correctly. Refer to Chapter 8, “Configuration Parameter Setting.
− 142 − 6 F 8 A 0 9 3 4 13.2.3 Flow rate indication is not stable. Note 1: If the detector tube is not filled with operating fluid, the flow is indefinite and measurement is im possible. Be sure to fill the detector tube with operating fluid before starting measurement.
− 143 − 6 F 8 A 0 9 3 4 13.2.4 When switch operation is unable START Place a cover to block the light from surroundings, or cover the control panel by hand to block the light.
− 144 − 6 F 8 A 0 9 3 4 14. Principle of Operation The operating principle of the electromagnetic flowm eter is based on Faraday's Law of electrom agnetic induction and it is designed to measure the volumetric flow rate of fluid.
− 145 − 6 F 8 A 0 9 3 4 15. Specifications 15.1 Flowmeter Specifications Overall Specifications Measurement range in terms of flow velocity: 0–0.5 m/s to 0–10 m/s System accuracy: when fluid conductivity is 0.1 μ S/cm or more Accuracy Flow rate as a percentage of range Span 0.
− 146 − 6 F 8 A 0 9 3 4 ■ LF516 Detector Specifications Meter size: 25, 40, 50, 80, 100mm Fluid pressure: -0.1 ~ 2MPa Connection flange standard: See Table 15.2 Type Specification Code Heat shock resistance – for ceramic tube detector Cooling: Δ T ≦ 100 ℃ /0.
− 147 − 6 F 8 A 0 9 3 4 LF546 Converter Specifications Input Input signal: ・ Flow rate proportional signal from the detector ・ Digital input signal Signal ty pe: 20 to 30Vdc voltage signal Input resistance: About 2.7k Ω Number of input points: 1 Digital input function: Select either of the following.
− 148 − 6 F 8 A 0 9 3 4 Digital output function: Select one of the following: ・ Totalization pulse output: Pulse rate Max. 3kHz(3000pps) ･･･ DO1 Max. 100Hz( 100pps) ･･･ DO2 (option) Pulse width Can be set within a range of 0.3 to 500ms.
− 149 − 6 F 8 A 0 9 3 4 15.2 Model Number Table Model LF516 Detector Type Specification Code Model number Specification code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Contents L F 5 1 Capacitance Type elec.
− 150 − 6 F 8 A 0 9 3 4 Model LF546 Detector Type Specification Code Model number Specification code Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 L F 5 4 Capacitance Ty pe electromagnetic flowmeter c.
− 151 − 6 F 8 A 0 9 3 4 16. Outline Drawing Meter size (mm) L1( mm) L2 (mm) φ D1( mm) Mass (kg) 25 80 241 66 Approx. 4 kg 40 100 264 85 Approx. 6kg 50 110 280 102 Approx.
− 152 − 6 F 8 A 0 9 3 4 Appendix 1 Factory default standard value table Parameter names Default value(SI unit) Default value(US unit) Changed v alue Excitation frequency Value(*1) Value(*1) Flow d.
− 153 − 6 F 8 A 0 9 3 4 When parameter value was appointed in order, parameter value may be different from list. Setting value in each size Range 1 (S I u n i t ) Range 1 (E n g l i s h u n i t ) Meter Size (mm/inch) Ex. Freq (Hz) (m3/h) (m/s) (gal/min) (ft/s) Count rate (gal) 25 / 1 400 6 3.
− 154 − 6 F 8 A 0 9 3 4 Appendix 2 System block diagram for LF516/LF546.
− 155 − 6 F 8 A 0 9 3 4 Write down the address and phone num ber of the dist ributor from which you purchased this product, the product code, SER.NO.
FCF50017.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Toshiba LF546 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Toshiba LF546 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Toshiba LF546 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Toshiba LF546 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Toshiba LF546, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Toshiba LF546.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Toshiba LF546. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Toshiba LF546 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
