User’s Manual Model MLX Loop Powered Process Indicator IM 60A02S01-01E-A IM 60A02S01-01E-A 3rd Edition
Page 2 of 49 Contents Loop Powered Process Indicator ........................................................................................ 1 Contents ....................................................................................................................................... 2 1. Introduction .............................................................................................................................. 3 1.1 Safe Use of This Product ..............................................
Page 3 of 49 1. Introduction Thank you for purchasing the Model MLX Loop Powered Process Indicator. Your Model MLX Process Indicator was precisely calibrated at the factory before shipment. To ensure both safety and efficiency, please read this manual carefully before you operate the instrument. The Model MLX field mounted indicator receives DC current signals from electronic transmitters and indicates process measurement values.
Page 4 of 49 WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. IMPORTANT Indicates that operating the hardware or software in this manner may damage it or lead to system failure. NOTE Draws attention to information essential for understanding the operation and features.
Page 5 of 49 (d) Maintenance • Please carry out only the maintenance procedures described in this manual. If you require further assistance, please contact the nearest Yokogawa office. • Care should be taken to prevent the build up of dust or other materials on the display glass and the name plate. (e) Modification • Yokogawa will not be liable for malfunctions or damage resulting from any modification made to this instrument by the customer. 1.
Page 6 of 49 1.3 ATEX Documentation This is only applicable to the countries in the European Union. GB All instruction manuals for ATEX Ex related products are available in English, German and French. Should you require Ex related instructions in your local language, you are to contact your nearest Yokogawa office or representative. DK Alle brugervejledninger for produkter relateret til ATEX Ex er tilgængelige på engelsk, tysk og fransk.
Page 7 of 49 Alle Betriebsanleitungen für ATEX Ex bezogene Produkte stehen in den Sprachen Englisch, Deutsch und Französisch zur Verfügung. Sollten Sie die Betriebsanleitungen für Ex-Produkte in Ihrer Landessprache benötigen, setzen Sie sich bitte mit Ihrem örtlichen Yokogawa-Vertreter in Verbindung. S Alla instruktionsböcker för ATEX Ex (explosionssäkra) produkter är tillgängliga på engelska, tyska och franska.
Page 8 of 49 2. Handling Cautions This chapter provides important information on how to handle the MLX Loop Powered Process Indicator. Read this carefully before using the indicator. The MLX indicator is thoroughly tested at the factory before shipment. When taking delivery of an instrument, visually check it to make sure that no damage occurred during shipment. Also check that the indicator mounting hardware shown in figure 2.1 is included.
Page 9 of 49 2.1 Model and Specifications Check The model name and specifications are written on the name plate attached to the case. MODEL: Specified model code. SUFFIX: Specified suffix code. MFG: Year of manufacture. NO.: Serial number. INPUT: Input signal (4-20mA DC). CALIB RANGE: Specified calibration range. Figure 2.2 MLX Name Plate 2.2 Unpacking Keep the indicator in its original packaging to prevent it from being damaged during shipment.
Page 10 of 49 (4) Ambient Atmosphere (5) Do not install the indicator in a corrosive atmosphere. If this cannot be avoided, there must be adequate ventilation as well as measures to prevent the leaking of rain water and the presence of standing water in the conduits. (6) Shock and Vibration (7) Although the MLX is designed to be relatively resistant to shock and vibration, an installation site should be selected where this is kept to a minimum. 2.
Page 11 of 49 2.6 Installation of an Explosion-Protected Instrument WARNING If a customer makes a repair or modification and the instrument is not restored to its original condition, its safety may be compromised and the instrument may be hazardous to operate. Please contact Yokogawa before making any repair or modification to an instrument. CAUTION This instrument has been tested and certified as being Explosionproof.
Page 12 of 49 • • • In hazardous location, wiring shall be in conduit. WARNING: A SEAL SHALL BE INSTALLED WITHIN 50 cm OF THE ENCLOSURE. When installed in Division 2,“FACTORY SEALED, CONDUIT SEAL NOT REQUIRED”. All wiring shall comply with National Electrical Code ANSI/NEPA70 and Local Electrical Codes. Note 3. Installation • Installation should be in accordance with ANSI/ISA RP12.
Page 13 of 49 - Class I, Zone 2, Group IIC T4. - Tamb. –40°C to 80°C • Enclosure rating: NEMA 4X. • Temperature Class: T4 • Ambient Temperature: –40°C to 80°C Note 2. Entity Parameters • Intrinsically Safe Apparatus Parameters [Groups A - G] Ui = 24 V Ci = 0 pF Ii = 150 mA Li = 0 µH Pi = 0.65 W Note 3. Wiring • All wiring shall comply with National Electrical Code ANSI/NEPA70 and Local Electrical Codes.
Page 14 of 49 [Intrinsically safe] Group IIC, Zone 0 Class I, II, III, Division1 & 2 Groups A - G MLX Loop Indicator - + + + + Safety Barrier - - + 2- Wire Transmitter - General Purpose Equipment 4-20mA Hazardous Area Non-Hazardous Area [Non-incendive] Group IIC, Zone 2 T4 Class I, II, III, Division 2 Groups A - D, F, G MLX Loop Indicator - + + + 2- Wire Transmitter FM Certified Equipment (non-incendive) 4-20mA Hazardous Area Non-Hazardous Area IM 60A02S01-01E-A
Page 15 of 49 2.6.2 CENELEC ATEX Certification 1) Technical Data a. CENELEC ATEX Intrinsically Safe/CENELEC ATEX Flameproof/ CENELEC ATEX Non-Incendive Type Caution for CENELEC ATEX Intrinsically Safe/CENELEC ATEX Flameproof/ CENELEC ATEX Non-Incendive Type. Note 1. Model MLX Loop Process Indicators with optional code /KU21 applicable for use in potentially hazardous locations: Certificate No. ITS13ATEX27856X Certificate No. ITS13ATEX17857 Certificate No.
Page 16 of 49 • When used in a potentially explosive atmosphere, requiring the use of apparatus of equipment category 1D or 2D, certified cable entry devices shall be used that are suitable for the application and correctly installed. Note 5. Maintenance and Repair • The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void Intrinsically Safe Certification. Note 6.
Page 17 of 49 WARNING To satisfy IP66 or IP67, apply waterproof glands to the electrical connection port.
Page 18 of 49 [Non-incendive] Group IIC, Zone 2 MLX Loop Indicator - + + + [Ex ic] Certified Equipment (non-incendive) 2- Wire Transmitter 4-20mA Hazardous Area Non-Hazardous Area Note 4. Maintenance and Repair • The instrument modification or parts replacement by other than authorized representative of Yokogawa Corporation of America is prohibited and will void Intrinsically Safe Certification. Note 5.
Page 19 of 49 • Nameplate for FM Intrinsically Safe/Explosionproof/Dust-Ignition-proof/Non-Incendive type (Option /FU1) Intrinsically Safe for Class I II, III; Groups A - G; Divisions 1 & 2; Zone 20, Class I, Zone 0, AEx ia IIC T4 Ga -40°C < Ta < +80°C Ui = 24V, Ii = 150mA, Pi = 0.65W, Ci = 0uF, Li = 0mH Explosionproof/Dust-Ignition-Proof for Class I, II, III; Groups A - G; Divisions 1 & 2 Class I, Zone 1, Group IIC, T4 Tamb.
Page 20 of 49 • Nameplate for Combined Approval type (Option /V1U – Combination of Options FU1, KU21, and CU1) M1275DX 4-20mA DC 0359 Intrinsically Safe (Securite Intrinseque) for Class I II, III; Groups A - G; Divisions 1 & 2 Zone 20 Class I, Zone 0, AEx ia IIC T4 Ga; II 1G Ex ia IIC T4 Ga -40°C < Ta < +80°C Ui = 24V, Ii = 150mA, Pi = 0.65W, Ci = 0uF, Li = 0mH Cert. No. ITS13ATEX27856X, IECEx ETL 13.
Page 21 of 49 3) Electrical connection The type of electrical connection is stamped near the electrical connection port according to the following marking. Thread Size ISO M20 x 1.5 female ANSI ½ - 14 NPT female Marking M A Location of the Thread Marking 2.6.3 Canadian Standards Association (CSA) Certification 1) Technical Data a. CSA Intrinsically Safe/CSA Explosionproof/ CSA Non-Incendive Type. Caution for CSA Intrinsically Safe/CSA Explosionproof/CSA Non-Incendive type. Note 1.
Page 22 of 49 • • • • - Zone 20, Class I, Zone 0 - AEx ia IIC T4 - Tamb. –40°C to 80°C Non-Incendive for: - Class I, II, III; Groups A - D, F, G; Divisions 2. - Class I, Zone 2, Group IIC T4. - Tamb. –40°C to 80°CEnclosure: Type 4X Temp. Code: T4 Amb. Temp.: –40°C to 80°C Enclosure: “Type 4X” Note 2. Electrical Data • Intrinsically safe ratings are as follows: Maximum Input Voltage (Vmax/Ui) = 24 V Maximum Input Current (Imax/Ii) = 150 mA Maximum Input Power (Pmax/Pi) = 0.
Page 23 of 49 • • • • Installation should be in accordance with Canadian Electrical Code Part I and Local Electrical Code. Dust-tight conduit seal must be used when installed in Class II and III environments. WARNING: SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY. ADVERTISSEMENT: LA SUBSTITUTION DE COMPOSANTS PEUT COMPROMETTRE LA SECURITE INTRINSEQUE. WARNING: DO NOT OPEN COVERS WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT. INSTALL IN ACCORDANCE WITH THE INSTRUCTION MANUAL.
Page 24 of 49 [Non-incendive] Group IIC, Zone 2 T4 Class I, II, III, Division 2 Groups A - D, F, G MLX Loop Indicator - + + + 2- Wire Transmitter CSA Certified Equipment (non-incendive) 4-20mA Hazardous Area Non-Hazardous Area 2.6.4 IECEx Certification 1) Technical Data a. IECEx Intrinsically Safe/IECEx Flameproof/ IECEx Non-Incendive Type Caution for IECEx Intrinsically Safe/ IECEx Flameproof/ IECEx Non-Incendive Type. Note 1.
Page 25 of 49 Note 2. Electrical Data • In the case where the type of explosion protection is intrinsically safe, Ex ia IIC T4 Ga, only connect to a certified intrinsically safe circuit with the following maximum values: Ui = 24 V Ii = 150mA Pi = 0.65 W Effective internal capacitance; Ci = 0 Effective internal inductance; Li = 0 Note 3. Wiring • For an ambient temperature ≥70°C, heat resistant cables shall be used with a rating of at least 20°C above the ambient temperature.
Page 26 of 49 [Intrinsically safe] Group IIC, Zone 0 MLX Loop Indicator - + + + + IECEx Certified Safety Barrier - 2- Wire Transmitter - + General Purpose Equipment - 4-20mA Hazardous Area Non-Hazardous Area [Non-incendive] Group IIC, Zone 2 MLX Loop Indicator - + + + IECEx Certified Equipment (non-incendive) 2- Wire Transmitter 4-20mA Hazardous Area Non-Hazardous Area IM 60A02S01-01E-A
Page 27 of 49 IM 60A02S01-01E-A
Page 28 of 49 2.7 EMC Conformity Standards EN61326-1 Class A, Table 2 (for use in industrial locations) NOTE YOKOGAWA recommends using metal conduit or twisted pair shielded cable for signal wiring to conform to the requirements of EMC regulations when installing the MLX in the plant. 2.
Page 29 of 49 3. Installation The MLX can be mounted on a wall or a 2” pipe. The housing is NEMA 4X/IP66/IP67 rated so it can be mounted outside in the field. "0 Ring" seals MUST be carefully examined after opening to ensure that the NEMA 4X/IP66/IP67 protection is maintained. Damaged seals MUST be replaced. The complete electrical circuit in the hazardous area MUST be capable of withstanding an AC test voltage of 500V RMS to earth or frame of the apparatus.
Page 30 of 49 3.1 Mounting Examples Figure 3.
Page 31 of 49 4. Wiring 4.1 Wiring Precautions IMPORTANT • • • • • For an ambient temperature ≥70°C, heat resistant cables shall be used with a rating of at least 20°C above the ambient temperature. Lay wiring as far as possible from electrical noise sources such as large capacity transformers, motors, and power supplies. Remove the electrical connection dust cap before wiring. To prevent noise pickup, do not pass signal and power cables through the same ducts.
Page 32 of 49 4.3 Wiring 4.3.1 Loop Configuration The following is a typical wiring example of the MLX connected to an EJA Pressure Transmitter. (1) General-use Type (Note: The EJA Transmitter below can be replaced with any 4-20mA 2 wire device. ) Figure 4.
Page 33 of 49 5. Operation 5.1 Overview The MLX is loop powered. Connect it in series with a 4-20mA loop as per Section 4 “Wiring”. Observe correct polarity as the indicator is protected against reversed connections but will not display a reading. After properly connecting the indicator to a transmitter or other 4-20mA source, the display will indicate the value of the current flowing in the loop (0-100% for the standard model or other specified engineering units can be user defined).
Page 34 of 49 Listing 1. MLX Menu Tree (Setup) 1. Calibrate 2. Eng units 3. Response 4. Indicators 5. Decimal pt 6. Scroll 7. Return (Calibrate) (Set Units) (Common) 1. Start Cal 2. Return 1. Common 2. Alphabetical 3. Clear Units 4. Return 1. % 2. bar 3. barg 4. degC 5. degF 6. inH20 7. kg/h 8. kNm3/h 9. m 10. m3/h 11. Nm3/h 12. t/h 13. Return (Eng Units) 1. Set Units 2. Eng unit 0 value 3. Eng unit FS value 4. Return (Response) 1. Linear 2. Sqrt 3. 3/2 4. 5/2 5. Custom 6. Return (Zero value) 1.
Page 35 of 49 MLX Menu Tree (cont.) (Bar) From Indicators 1. Bar on 2. Bar off 3. Return (x10) 1. x10 on 2. x10 off 3. Return (x100) 1. x100 on 2. x100 off 3. Return (x1000) 1. x1000 on 2. x1000 off 3. Return (%) 1. % on 2. % off 3. Return (P) 1. P on 2. P off 3. Return (SP) 1. SP on 2. SP off 3. Return (T) 1. T on 2. T off 3. Return (F) 1. F on 2. F off 3.
Page 36 of 49 Listing 2. Alphabetic units List of alphabetical engineering units (from Alphabetical) % %C %CH4 %CO %CO2 %CP %H2 %H2O %LEL %N2 %O2 %R.H. %RF %RH %RV %VH 1/min 1/s A ABS at ata atg atm BACARA bar BARA barabs bare bareG barG bbl/d bbl/h bbl/min bbl/s bbl_b/d bbl_b/h bbl_b/min bbl_b/p bbl_b/s bbl_o/d bbl_o/h bbl_o/min bbl_o/p bbl_o/s BPD Bq/cm2 Bq/cm3 BRIX BTU/SCF c/s cal cal/kWh CC/MIN Cel CelD.P.
Page 37 of 49 km3 km3/d km3/h km3/min km3/s km3N/h KMHO kN kN.m kN/m2 kN/m2abs kN/m2G kNm3/h knot kOhm kPa kPaabs kPaG kt kt/h kV kvar kW kW.h kW.m-2 kW/m2 KWH/M3 l L.E.L.
Page 38 of 49 Sm3/h St Sv/h t t/d t/h t/min t/p t/s TF THz TM Torr TPm TR/min uA ubbl/d ubbl/h ubbl/min ubbl/s ubbl_b/d ubbl_b/h ubbl_b/min ubbl_b/p ubbl_b/s ubbl_o/d ubbl_o/h ubbl_o/min ubbl_o/p ubbl_o/s uF ug ug/l ug/m3 uGy/h uHg um UMHO UMHO/CM umP-P uOhm uPa uS us uS/cm uS/m USI/CM uSv/h uV uW/cm2 V VAC var vol% vol%O2 volpct W W.h W.s W/m2 wt% wtpct wtpctS wtppb wtppm X10L Listing 3.
Page 39 of 49 5.2 Setting Engineering Units The standard configuration of the MLX sets the engineering units to 0-100% with two decimal places. Also, after calibration, the MLX will be set to 0-100% with two decimal places. (Refer to the Maintenance section for instructions on calibrating the MLX.) If other engineering units are desired, they must be setup. The following procedure illustrates an example of using units of 200400 m3/h.
Page 40 of 49 The numeric display shows the current engineering unit zero value with the least significant digit blinking. At this point, the menu buttons are redefined as in Table 5.2. Table 5.2 MLX key functions (when in Engineering units mode) Key Function Selects the digit to modify (digits advance from least significant to most significant to the sign symbol and back to least significant – 6 digits plus sign). Increments the selected digit (values roll over from 9 to 0).
Page 41 of 49 6. Maintenance 6.1 Overview The electronics of the MLX is maintenance free. This chapter describes the procedures for calibration and rotating the display within the enclosure. Please carefully and thoroughly read the following sections for information on how to perform these maintenance procedures. 6.2 Calibration Instruments Selection Table 6.1 lists the instruments that can be used to calibrate the MLX. When selecting an instrument, consider the required accuracy level.
Page 42 of 49 (3) Using the values in Table 6.2, check the MLX readings by setting the current source to each of the table values. Check all points in the table and verify unit is within specification. Table 6.2 Percent vs. Current Values Value 0% 25% 50% 75% 100% Current 4.0mA 8.0mA 12mA 16mA 20mA (4) If a re-calibration is required, use the following method: (a) Touch the “Menu” button to enter the menu system. The alphanumeric display reads “Setup”. (b) Touch to begin the setup routine.
Page 43 of 49 7. General Specifications 7.1 Standard Specifications □FUNCTIONAL SPECIFICATIONS Input: 4-20mA DC 2-wire Voltage Drop: 3.5V at 20mA LCD Display Numerical: Six 7-segment digits Alpha-numerical: Six 14-segment characters Bar graph: 20-segment Bar graph. Symbols: P, SP, T, F, %, √, x10, x100, x1000 Configuration: User configurable for desired engineering units. Method: User configurable from front panel Zero & Span: Zero and span can be set between ±999999.
Page 44 of 49 7.2 Model and Suffix Codes MODEL AND SUFFIX CODES Model MLX Input signal Mounting Housing Communication Electrical Connection Optional Codes Suffix Codes ……………………………….......... -A…………………………………... 1…………………………............ 2…………………………............ 1…………………………........ 2…………………………........ -1…………………. -2…………………. 0…………….. 2…………….. 3…………….. 4……………..
Page 45 of 49 OPTIONAL SPECIFICATIONS (For Explosion Protected Type) Item Canadian Standards Association (CSA) Canadian Standards Association (CSA) IECEx Scheme Combination of Approvals INMETRO (Brazil) Certificate GOST (Russian) Certificate Description CSA Intrinsically Safe/CSA Explosionproof/ CSA Dust-Ignition-Proof /CSA Non-incendive Approval Certified to: CSA C22.2 No. 25, CSA C22.2 No. 30, CSA C22.2 No. 157, CSA C22.2 No. 213, CSA C22.2 No.
Page 46 of 49 □Example Ordering Information: MLX-A11-10/FF1/ENG/SST (Field Mounted Loop Indicator, 4 to 20mA DC, 2” Horizontal Pipe mount, aluminum housing, standard communication, ANSI ½ NPT electrical connection without blind plugs, FM Explosion-proof approval) 0-200 InH2O Scale in Engineering Units. Please specify Scale and Engineering units when ordering /ENG. FT-201 Specify Tag Number when ordering /SST and/or /SSW.
Page 47 of 49 7.
Page 48 of 49 Revision Record Title: MLX Loop Powered Process Indicator Manual No.: IM 60A02S01-01E-A Edition 1st 2nd 3rd 4th Date January 2012 March 2012 July 2013 February 2014 Page -14, 21 11-22 45 Revised Item New publication Removed J12 reference; modified Specifications Added ATEX, CSA and IEC. Changed Section 5.
Page 49 of 49 IM 60A02S01-01E-A
