Siemens Pacemaker UM344-2 - Manuals

CONTENTS UM344-2 SECTION AND TITLE PAGE September 1995 iv 9.0 GLOSSARY ........................................................................................................................... 9-1

UM344-2 CONTENTS SECTION AND TITLE PAGE September 1995 v A.0 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS ................................................... A-1 B.0 APPENDIX B - HAZARDOUS AREA INSTALLATION .................................................. B-1 WARRANTY ....................................

CONTENTS UM344-2 SECTION AND TITLE PAGE September 1995 vi LIST OF TABLES 4.1 Operating Mode and Network Type ........................................................................................... 4-3 4.2 Thermocouple and Extension Grade Wire Characteristics ........................................

1-1 UM344-2 INTRODUCTION September 1995 1.0 INTRODUCTION This User’s Manual is for the XTC™ Model 344 Smart Temperature Transmitter. It covers both the Transmitter-Controller and Transmitter only versions. NOTE Throughout this Manual the term Transmitter will include both versions except when the Tr...

1-3 UM344-2 INTRODUCTION September 1995 FIGURE 1-2 Terminal Connections 1.2 PRODUCT DESCRIPTION The Model 344 Temperature Transmitter, shown in Figure 1-1, is a microprocessor -based measurement and control device which combines accurate, reliable temperature measurement and a PID controller in one ...

1-4 INTRODUCTION UM344-2 September 1995 The HART protocol is used for communication between the transmitter and a Moore XTC Communicator (MXC), a personal computer running MXTC Configuration Software or other remote device. A typical communication can be to: transfer a new and edited configuration, ...

UM344-2 XTC COMMUNICATOR September 1995 2-1 2.0 XTC COMMUNICATOR The Moore XTC Communicator (MXC) is a HART protocol-based, hand-held instrument capable of communicating with HART conformant instruments from Moore Products Co. and from other manufacturers. It provides full access to on-line and off-...

XTC COMMUNICATOR UM344-2 September 1995 2-2 ON F1 F2 F3 F4 OFF TRANS. VAR'S A B C 1 TREND ZOOM STATUS CHANGE S P D E F G H I 2 3 VALVE J K L M N O P Q R A / M S T U V W X Y Z # 4 6 5 7 8 9 TUNE @ % & __ SPACE 0 + / * . BACK LIGHT SHIFT SHIFT SHIFT CHANGE MOORE XTC COMMUNICATOR X02665O0 Figure 2-...

UM344-2 XTC COMMUNICATOR September 1995 2-3 2.1 DISPLAY The MXC has a 5 by 8 dot matrix Liquid Crystal Display (LCD) with four lines of twenty characters each to show configuration parameters, operating status , on-line variables, and trends. The LCD has a back light that can be turned on for viewin...

XTC COMMUNICATOR UM344-2 September 1995 2-4 BACK LIGHT - This key turns on the LCD back light for easier viewing of the display in a dimly lighted area. The back light is activated by pressing the key and is deactivated by again pressing the key. NOTE The back light consumes significant power. To ex...

UM344-2 XTC COMMUNICATOR September 1995 2-5 AUTO/MANUAL - The A/M key toggles the controller between automatic and manual control. Press the “MANUAL”, key F1, or “AUTO”, key F2 to change state. Press “A/M” key again, or F4, to exit this mode. TUNE - This key allows tuning of the controller. The firs...

UM344-2 XTC COMMUNICATOR September 1995 2-7 2.4 POWER Six "AA" alkaline batteries are supplied with the MXC. Remove the rear cover to access the battery compartment, as shown in the figure. Typical operating time of the MXC with new batteries and the back light off is approximately 80 hours;...

XTC COMMUNICATOR UM344-2 September 1995 2-8 Main Menu On-Line Menu On-Line Configuration Menu Calibrate/Test Menu Function Block Menu Configuration Complete Menu Loop Override Menu MXC screens X02781S0 FIGURE 2-2 Major MXC Menu Screens S E L E C T F U N C T I O N F I N D A R C H T E S T X M T R F U ...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-1 3.0 INITIAL TRANSMITTER SET-UP Before operating a Model 344 on-line, the instrument should be commissioned using the MXC and set-up either at the bench or in the field. Commissioning consists of checking that the transmitter and the loop are ope...

INITIAL TRANSMITTER SET -UP UM344-2 September 1995 3-2 Bench PowerSupply (DC) _ + DigitalMilliammeter + _ 250 MXC + _ + _ Signal Test Resistance Decade Box X02807S1 Model 344 Terminals FIGURE 3-1 Bench Test Connections CircuitJunction Controller,Recorder,Indicator, orother 1-5 VdcDevice SystemPowerS...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-3 3.2 ESTABLISHING COMMUNICATION 1. Connect the transmitter as shown in either Figure 3-1 or 3-2. 2. Apply power to the loop. 3. Press and momentarily hold the MXC's ON key. The first screen that will appear after the initial power up screens is t...

INITIAL TRANSMITTER SET -UP UM344-2 September 1995 3-4 NOTE Analog and Digital modes are discussed in detail in Section 4. 5. The MXC will next prompt for a digital method of searching. Press one of the following keys. SHRT ADDR (F1) - Press and then enter the short address (1-15) stored during conf...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-5 The next screen to appear is used to save the configuration to an archive. If the configuration is to be edited, press YES (F4) to save the configuration in case a mistake is made. The next screen will prompt for an archive number (0-99). The ar...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-7 TEST SCRN - Press to test all screen segments. When this key is pressed, the MXC displays the "Begin" message to the left, then lights all the segments, turns them all off, displays the "Completed" message, and the n returns to t...

INITIAL TRANSMITTER SET -UP UM344-2 September 1995 3-8 3.3.3 Loop Testing Testing the loop involves making sure that the Transmitter is sending out the proper current signal and that the other elements in the loop are receiving this signal. The Loop Override mode is used to test the loop. 1. At the ...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-9 1) At the On-Line Menu, press CONFIG to access the function blocks. Continue through the menu sequence until reaching the Function Block Menu. 2) Check the information in the eight function blocks listed below. Edit values as needed while review...

INITIAL TRANSMITTER SET -UP UM344-2 September 1995 3-10 SP TRACK & HOLD Tracking Setpoint PUSP A/M TRANSFER Power-Up Mode Automatic Only Power-Up Valve CONTROLLER BLOCK Controller ON/OFF Controller Type Action Prop. Gain Time-Integral Time-Derivative Derivative Gain Manual Reset Manual Reset Tra...

UM344-2 INITIAL TRANSMITTER SET -UP September 1995 3-11 P - Process Variable 4. Check these Transmitter Variables to ensure the readings are correct. 5. Press END (F4) to return to the main menu.

UM344-2 INSTALLATION September 1995 4-1 4.0 INSTALLATION This Section describes installation of a Model 344 Temperature Transmitter. Topics include: receipt of shipment, installation considerations, and mechanical and electrical installation. IMPORTANT The installation must conform to the National E...

INSTALLATION UM344-2 September 1995 4-2 4.2 ENVIRONMENTAL CONSIDERATIONS Many industrial processes create severe environmental conditions. The conditions at each transmitter location must be within the specifications stated in Section 8.3.5. The Transmitter is designed to perform in harsh conditions...

UM344-2 INSTALLATION September 1995 4-3 Ÿ Determine conduit routing. Refer to Section 4.4.5. Ÿ Prepare installation site drawings showing the following: Ÿ Location of the Master Device (e.g. MXC or controller) Ÿ Location and identification of each Transmitter Ÿ Routing plan of signal cable(s) Ÿ Loca...

INSTALLATION UM344-2 September 1995 4-4 4.3.3.1 Analog Mode Ÿ The Transmitter outputs a 4-20 mA signal for input to devices such as controllers and recorders. Ÿ Analog operation employs a Point-To-Point Network comprising a Transmitter, Primary/Secondary Master, and other non-signaling devices. Tran...

INSTALLATION UM344-2 September 1995 4-6 FIGURE 4-1 Point-To-Point Network (Analog Mode) FIGURE 4-2 Model 352 SLDC and Model 344 Connections (Analog Mode) 250SeeNote 1 Model 352RearTerminalsSee Note 4 A4 B5 MXC AG A5 HazardousLocation Non-HazardousLocation Notes: 1. Network resistance equals the sum ...

INSTALLATION UM344-2 September 1995 4-8 4.3.4 Power Supply Requirements A power supply is needed to power the Transmitter(s). The power supply can be: Ÿ A separate stand-alone supply capable of powering several Transmitters. It can be mounted in a control room or in the field. Follow the power suppl...

INSTALLATION UM344-2 September 1995 4-10 Power supply output voltage must be less than the calculated value. The maximum voltage across the input terminals of a Transmitter should never exceed 42 volts. The maximum number of Transmitters that can be connected to a Multi-Drop Network is fifteen. Each...

UM344-2 INSTALLATION September 1995 4-13 Ÿ Individual miscellaneous hardware must meet the following requirements: Ÿ Capacitance to Ground ................ 50 pF maximum Ÿ Resistance to Ground ................. 1 M Ω minimum Ÿ Impedance if Series Connected ................ Less than 10 Ω Ÿ Impedance...

INSTALLATION UM344-2 September 1995 4-14 B. RTD/Ohm Sensor -to-Transmitter Extension Cable The Transmitter will compensate for the effect of lead wire resistance for 3 and 4-wire RTD's and for an Ohm (potentiometer) sensor when a 3-wire input connection is used. Input connections may be made with co...

INSTALLATION UM344-2 September 1995 4-16 b) The cable shield(s) may be grounded at a Network Junction Box or Wiring Panel provided that the cable shields are connected to either a terminal or the Box or Panel frame, and the terminal or frame is gr ounded. The power supply (+) and (-) connections mus...

INSTALLATION UM344-2 September 1995 4-18 FIGURE 4-5 Dimensions, Mounting Bracket for Model 344 5.90(149.9) 4.44(112.8) 3.80(96.5) 4.04(102.6) .034(8.6)Diameter 0.61(15.5) Dimensions in Inches(millimeters) 2.81 (71.4) 0.72(18.3) 2.81 (71.4) Mount Transmitter to bracket with 1/4-20 bolts and lockwashe...

UM344-2 INSTALLATION September 1995 4-21 2. Bracket to Pipe Mounting 1) At the selected location on the pipe, place the pipe -groove side of the mounting bracket against the pipe. See Figure 4-6. 2) Slip the supplied U-bolt around the pipe and through one of the two pairs of mounting holes in the pi...

INSTALLATION UM344-2 September 1995 4-22 4.4.3 Direct Mounting to Process The Transmitter can be mounted directly to the point of measurement and supported by the thermowell, extension fittings, and probe assembly. IMPORTANT It is recommended that high temperature anti-seize compound be applied to t...

INSTALLATION UM344-2 September 1995 4-24 Sensor Element Extension Wires 1/2 NPT Nipple (Screws into Transmitter Conduit Inlet) Extension Assembly Sensor Probe Sheath Thermowell Sensor Probe Probe Hex Union Extension Nipple 1/2 NPT Thread Thermowell Hex RTD or Thermocouple Sensor Element Probe Juncti...

UM344-2 INSTALLATION September 1995 4-25 4.4.4 Local Digital Meter Installation, Repositioning and Removal Three procedures are provided in this section. Refer to Figures 4-9 and 4-10 as necessary. IMPORTANT Follow proper electronic circuit board handling procedures to avoid damage to the semiconduc...

INSTALLATION UM344-2 September 1995 4-26 3. At the Electronics Module, remove the meter mounting bracket attached to the left corner of bottom circuit board . Install bracket in right front corner of that circuit board. Hex Stand-Off and Digital Meter Assembly Mounting Screw Bracket and Digital Mete...

UM344-2 INSTALLATION September 1995 4-27 Digital LCD Meter Meter Mounting Screw, qty. 2 Notes 1, 2 and 3 Cable connectors J1 to J4 wired in parallel Disconnect Cable Cable guide slot (4 places) X02870S1 Meter Repositioned 90 CCW o Meter Repositioned 180 o Notes: 1. Meter can be rotated clockwise or ...

INSTALLATION UM344-2 September 1995 4-28 3. Determine desired meter orientation and perform either procedure A or B. Note the following when installing and positioning the short ribbon cable and when applying power to the transmitter. NOTE Pin 1 end of cable connector is identified by dark Red or Bl...

UM344-2 INSTALLATION September 1995 4-29 FIGURE 4-11 Conduit Drain and Explosion Proof Installations Plug unused entrance Conduit Drain Installation Drain Seal Conduit for field wiring(DC power) For explosion proof installation use conduitseal, Crouse-Hinds type EYS or equivalent,on wiring outlet. C...

INSTALLATION UM344-2 September 1995 4-30 Ÿ Thermocouple wire must be handled with great care when being installed in conduit. Decalibration of the wire can result by cold -working the metal conductor, an effect that can occur when the wire is drawn through a conduit or damaged by rough handling or v...

UM344-2 INSTALLATION September 1995 4-31 4.5 ELECTRICAL INSTALLATION This section describes loop wiring for Point-To-Point and Multi-Drop Networks. Refer also to Section 4.6 for installations in hazardous locations. Figure 4-12 shows signal and sensor termination terminal strips in the Transmitter’s...

INSTALLATION UM344-2 September 1995 4-32 FIGURE 4-12 Signal (Loop) , Sensor, MXC and Test Terminals 4. Connect the loop cable to the SIGNAL (+) and (-) terminals inside the Transmitter's enclosure. Refer to Figure 4-1, 4-2 or 4-3 for the needed connections for the type of Network. Terminals will acc...

INSTALLATION UM344-2 September 1995 4-34 Standard ANSI color coding is used on insulated thermocouple or extension grade wire when the insulation permits. Some insulations will use a colored tracer to indicate the lead polarity. Refer to Table 4.2 for color code information and bare wire characteris...

UM344-2 INSTALLATION September 1995 4-35 7. If one of the two electrical conduit entrances in the housing is not used, it should be plugged. Refer to the Transmitter's nameplate and Section 8.1 to determine whether entrance holes accept ½-14 NPT or M20 x 1.5 fittings. Seal ½ NPT fittings with TFE/PT...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-2 1. Establish communication with a transmitter; see Section 3.2. The On-Line Menu shown adjacent should be displayed. 2. Press CONFIG (F3) at the On-Line Menu screen to enter the configuration mode and display the Configuration Mode screen (ad...

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-3 NOTE Function blocks are in an easy to use format with configuration parameters grouped by like function. Those supported are Sensor Input, Operator Display, Transmitter ID, Output Block, Alarm Block, SP Track & Hold, A/M Transfer and Contro...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-4 8. The Range screen shows the unit of measurement and the lower and upper range values (LRV and URV) currently configured. Set the transmitter's temperature range corresponding to 4 and 20 mA. (See Section 8 for transmitter input ranges.) The...

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-5 Press ENTER to store the new value in the on-line alterable memory and return to the Range screen. Pressing QUIT displays the Range screen without saving a new value. NOTE To conserve battery power, the MXC should not be left in the Sensor Input...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-6 4. Set Auto Rerange to enable or disable using the LAST OPTN and NEXT OPTN keys. Press SEL/CONT to continue. Pressing SEL/END will end configuration of this block. 5. Scroll through the Local Display Code using the LAST OPTN and NEXT OPTN key...

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-9 5. Press SEL/CONT (F4) to configure the alarm type. 6. Press NEXT OPTN (F2) to choose either HIGH or LOW. 7. Press SEL/CONT (F4) to configure Alarm 2 or SEL/END (F3) to return to the Function Block Menu. 8. At the SELF CLEARING NAKS screen press...

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-13 Ÿ If the configuration has been edited, the MXC will display the adjacent warning that the transmitter's configuration will be changed.

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-15 5.1.3.1 Display Functions The numerals displayed on the Digital Meter represent the value of the PROCESS VARIABLE (PV) when the “PV” annunciator is lit; see Figure 5-1. The units associated with PV are chosen during transmitter configuration of...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-18 too small, in which case no new ZERO or FULLSCALE value is stored). 3. Change FULLSCALE range value: 1) Supply FULLSCALE value. If the process variable currently being reported by the Transmitter is not the desired FULLSCALE value, then the ...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-20 7. Refer to step 2 above and select the new damping value. Count the number of steps (damping values) from “0” seconds to the selected value. This number “N” will be used in the following step 8. 8. Press and release the FULLSCALE pushbutton...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-22 1. The Controller must be in the MANUAL control mode to change the VALVE; if it is not, place the Controller in the MANUAL control mode.

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-24 5.1.4 Quick Access Key Operation MXC Quick Access keys are used to view transmitter parameters while the MXC is on-line and communicating with a transmitter (refer to Section 2). Eight Quick Access keys are used with the Model 344: TRANS. VA...

UM344-2 ON-LINE AND OFF-LINE OPERATION August 1995 5-25 4) Press ENTER. The following are shown in the adjacent screen: Upper and Lower Range Values stored in the transmitter, the current transmitter reading and the thirteen sample trend. 5) Press either TREND or F4 to exit this screen. ZOOM - expan...

ON-LINE AND OFF-LINE OPERATION UM344-2 September 1995 5-26 CHANGE SP - allows you to view and change the on-line-setpoint of the controller. 1) Enter new setpoint and press ENTER (F4) to store the value. 2) Press the “CHANGE SP” key again or END (F3) to exit. CHANGE VALVE - allows you to view and ch...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-1 6.0 CALIBRATION AND MAINTENANCE This section describes calibration, preventive maintenance, and troubleshooting The Maintenance section has preventive maintenance procedures that are employed to prevent conditions from occurring that would be de...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-3 NOTE Removing a transmitter can interrupt power to other transmitters powered from a common power source. Note the effect this can have on process control and operation and, if necessary, follow the proper procedures to shut down the process. Wh...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-4 Bench PowerSupply (DC) _ + DigitalMilliammeter + _ 250 MXC + _ + _ Signal Test Resistance Decade Box X02807S1 1 2 3 Model 344Terminals FIGURE 6-1 Bench Test Connections CircuitJunction Controller,Recorder,Indicator, orother 1-5 VdcDevice SystemP...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-5 12. Read the ammeter. If the output is within limits, press QUIT (F3) and proceed to step 13. If calibration is still required, repeat step 10 as many times as necessary until the output is within limits, then press QUIT and proceed to step 13. ...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-6 6.1.3 RTD/OHM Type Input Calibration The conversion accuracy of the temperature signal from RTD/Ohm type inputs, as indicated by transmitter output ZERO and FULL SCALE values, depends upon both CURRENT SOURCE and NARROW/WIDE MILLIVOLT calibratio...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-7 Ohm input (wide range) ...... Equal to or less than +/-1.3 ohm of Zero and Full Scale ohmic values. Ohm input (narrow range) . Equal to or less than +/-0.45 ohm of Zero and Full Scale ohmic values. Equal to or less than +/-0.02% of selected span...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-9 FIGURE 6-3 RTD/Ohm Current Source Calibration Set Up 3. Read and note, to three decimal places, the value of the forcing current as displayed by the digital microammeter. 4. In response to the screen prompt, enter the noted current (in microamps...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-10 2) Disconnect the test resistance decade box and connect the test millivolt source to the transmitter. See Figure 6-4. 3) Turn ON the power supply and proceed to section 6.1.4.2 and perform the Narrow/Wide Millivolt calibration procedures. 6.1....

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-11 2. Determine millivolt values for thermocouple or mV input. • Thermocouple Type Input: Consult user supplied TC millivolt vs temperature table and record the millivolt values corresponding to the Zero and Full Scale temperatures. • mV Type Inpu...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-12 If accuracy is within specifications, calibration is not required. Disconnect test equipment, re-connect all wires and install enclosure cap. 6.1.4.2 Narrow/Wide Millivolt Calibration Calibration equipment connections are as shown in Figure 6-4...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-13 The MXC's screen will display: 3. Adjust the output of the millivolt source to 103.000 mV. A P P L Y 1 0 3 . 0 0 m V T Om V + ( 1 ) A N D m V - ( 3 )WITH COPPER WIRE C O N T

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-14 4. Press CONT (F4). Screen will display: 5. Adjust the output of the millivolt source to -18.000 mV. 6. Press CONT (F4). Screen will display: 7. Press CONT (F4) to calibrate. Press ABRT (F3) to quit without changing calibration. 8. Wide Millivo...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-15 6.2.2 Transmitter Exterior Inspection The frequency of inspection will depend on the severity of the transmitter's environment. 1. Inspect the exterior of the transmitter enclosure for accumulated oil, dust, dirt, and especially any corrosive p...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-16 Check that all wire connections are tight. Enclosure threads must be coated with a wet, paste -type, anti-seize compound such as Never-Seez by Emhart Bostik. Inspect the enclosure O-ring for damage. It is not recommended that the enclosure’s el...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-17 MXC STATUS and Diagnostic Displays require fault -free HART communications between the MXC and the transmitter. In the event of communication problems, the MXC can display communication error messages. Refer to Section 6.3.2.1, paragraph B for ...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-18 Transmitter LCD MXC 1. If not already in communication with the suspect transmitter, establish communications by executing the "FIND XMTR" routine on the MXC as described in Section 3.2. 2. Press the MXC's STATUS key. If the message ...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-19 Repeat the "TEST" program to ensure the validity of the reported fault. Press END (F4) to exit the CALIBRATE/TEST program. Go to step 5. Fault Does Not Reappear: If the fault was temporary - possibly caused by excessive electrical noise...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-22 TABLE 6.4 Message - Field Device Malfunction This message results when, after having successfully established communications with a transmitter, a transmitter self -diagnostics failsafe flag is detected in a received message. Use the MXC STATUS...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-23 TABLE 6.5 Symptom - Zero or Low Output, Continued Loop Wiring/Power Supply Check for 12 Vdc minimum across SIGNAL +/ - terminals in transmitter terminal compartment. Check power supply output voltage for specified level: 17 Vdc minimum, 42 Vdc ...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-24 TABLE 6.7 Symptom - Output Current Fixed Below Scale at Approximately 3.84 mA POSSIBLE CAUSE CORRECTIVE ACTION Loop supply voltage less than 12 Vdc at transmitter SIGNAL +/- terminals. Replace power supply. Thermocouple Burnout (if Downscale pr...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-26 1. Turn off power to the transmitter and remove protective enclosure cap to access the LCD. 2. Snap a grounding wrist strap on wrist and connect ground clip to transmitter or mounting bracket. 3. As shown in Figure 4-10, disconnect cable from D...

UM344-2 CALIBRATION AND MAINTENANCE September 1995 6-27 6.5 ASSEMBLY REMOVAL AND REPLACEMENT This section provides general information concerning the replacing of assemblies. Removal and replacement of assemblies is easily accomplished with standard hand tools. Section 4.4.4 describes repositioning ...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-28 • The Electronics Module’s guide blocks engage the guide posts • The P1 power connector (at rear of Module) engages the mating connector on the Baseboard. 4. Secure the Electronic Modules’s retaining bracket to the stand-off. 5. If applicable, ...

CALIBRATION AND MAINTENANCE UM344-2 September 1995 6-30 When someone calls for support for the first time, a personal caller number is assigned. This number is mailed in the form of a caller card. Having the number available when calling for support will allow the TIC representative taking the call ...

UM344-2 CIRCUIT DESCRIPTION September 1995 7-1 7.0 CIRCUIT DESCRIPTION This section provides a basic circuit description of the XTC Model 344 Temperature Transmitter-Controller. Figure 7-1 shows a functional block diagram of the transmitter. The main Electronics Assembly is comprised a four circuit ...

CIRCUIT DESCRIPTION UM344-2 September 1995 7-2 FIGURE 7-1 Model 344 Electronics Module Block Diagram RTDI+ 104 uASource TC+ RTD TC TC-/RTD- Upscale/ Downscale Burnout Trickle Current P-Channel FET Switch V Burnout 52 uA Sink CMOSAnalog Switch RTD SEL 2-Pole Filter AMP Input 1 Reference Junction Temp...

UM344-2 CIRCUIT DESCRIPTION September 1995 7-3 7.2 THEORY OF OPERATION The transmitter input signal, obtained from a Thermocouple (TC), Millivolt (mV), Resistance Temperature Detector (RTD) , or Resistive (Ohm) source is wired to the transmitter’s signal input terminal block. The standard calibratio...

CIRCUIT DESCRIPTION UM344-2 September 1995 7-4 Analog Switch is turned on enabling the 52 µ A sink circuit.

UM344-2 CIRCUIT DESCRIPTION September 1995 7-5 The current from the 104 microamp source is applied to the RTDI(+) pin which is jumpered to the TC(+) pin. Since the 52 µ A sink network draws 52 microamps, the remaining current flows through the RTD input to ground creating a voltage at the input to t...

UM344-2 MODEL DESIGNATION AND SPECIFICATIONS September 1995 8-1 8.0 MODEL DESIGNATION AND SPECIFICATIONS This section contains the model designation table, accessory tables, and specifications for all Model 344 Temperature Transmitters. 8.1 MODEL DESIGNATION Table 8.1 identifies each model designati...

MODEL DESIGNATION AND SPECIFICATIONS UM344-2 September 1995 8-2 (2) Not available with FM/CSA Units. (3) Tags - The permanent transmitter nameplate can be stamped with a tagname of up to 8 characters. Optional, wired-on SS tags are also available. (4) Refer to SD344 for details. 8.2 ACCESSORIES Tabl...

MODEL DESIGNATION AND SPECIFICATIONS UM344-2 September 1995 8-4 9.00(22.9) 6.00(15.2) 2.00(5.10) See Note Thermocouple Thermowell Assembly 9.00(22.9) 6.00(15.2) 2.00(5.10) See Note 3-Wire RTD Thermowell Assembly Note: Typical Well Lengths in Inches (Centimeters). 3.50(8.9) 6.00(15.2) 8.00(20.3) 10.0...

UM344-2 MODEL DESIGNATION AND SPECIFICATIONS September 1995 8-5 Table 8.4 provides a list of replacement thermocouples and RTDs for Model 344T series thermal sensors. In critcal applications, it may be desirable to have on-hand spare elements. All thermal elements are 1/4” in diameter with a 316SS s...

MODEL DESIGNATION AND SPECIFICATIONS UM344-2 September 1995 8-6 8.3 SPECIFICATIONS The following specifications are for all transmitter models except as noted. 8.3.1 Mechanical Transmitter Dimensions .................................................Figure 8-3 Mounting Bracket Dimensions, Supplied Br...

UM344-2 MODEL DESIGNATION AND SPECIFICATIONS September 1995 8-9 Power Supply Minimum Compliance Voltage ................................+12 Vdc with no loop resistance, see Figure 4-4 Network (Current Sense or Loop) Resistance (R L ) ................................................250 Ω minimum, 110...

MODEL DESIGNATION AND SPECIFICATIONS UM344-2 September 1995 8-10 8.3.4 Sensor Inputs Common Mode Rejection .......................................120 dB at 50/60 Hz and 1000 ohm unbalanced input Normal Mode Rejection .........................................6 dB at 2 Hz and 60 dB at 50/60 Hz Input O...

UM344-2 MODEL DESIGNATION AND SPECIFICATIONS September 1995 8-11 ESD Susceptibility ........................................................IEC severity level 4, 15 kV 8.3.6 Hazardous Area Classification Before installing, applying power to, or servicing a transmitter, see the transmitter's nameplat...

MODEL DESIGNATION AND SPECIFICATIONS UM344-2 September 1995 8-14 8.3.6.1 CSA Hazardous Locations Precautions This section provides CSA hazardous location precautions that should be observed by the user when installing or servicing the equipment described in this Instruction. These statements supplem...

UM344-2 GLOSSARY September 1995 9-1 9.0 GLOSSARY Listed here are terms used in the field of temperature measurement; terms and abbreviations that appear on a Moore XTC Communicator (MXC) screen; and terms relevant to HART networks. ALPHA - The average percent change in resistance per degr ee of a pu...

A-1 UM344-2 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS September 1995 A.0 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS A.1 SENSOR INPUT BLOCK Input Type............... MV (Wide/Narrow), OHM (Wide/Narrow) RTD (PT 100 OHM DIN, PT 100 OHM US, PT 200 OHM DIN, PT 200 OHM US, PT 500 OHM DIN, PT 500 OHM US), T/C...

A-2 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2 September 1995 3. Process Variable - When process variable is selected, the input will be displayed in process variable units. Auto Rerange automatically rescales the Process Variable in proportion to the Measured Variable in the Sensor Input Bloc...

A-4 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2 September 1995 is in MANUAL, the output is the manual (M) value (-1.0 to 110%). The manual value can be adjusted with the pushbuttons of the XTC or from the CHANGE VALVE key of the MXC. When the manual (M) value is not the function block output, i...

A-5 UM344-2 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS September 1995 PD Controller Controller .................................................................... On/Off Controller Type....................................................... PID/PD/ID Action ..............................................

A-6 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2 September 1995 Equations O = GE + R MR AUTO R = TIs + 1 MANUAL R = F - GE ∴ O = F IF MRT = YES MR = F ID Controller Controller Status ........................................................... On/Off Controller Type..................................

A-7 UM344-2 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS September 1995 The gain for this controller is fixed at a value of 1.00. While the displayed gain can be changed, it will not affect the controller. Equations GE + F O = TIs + 1 AUTO when output O is connected to feedback F TDs 1 O = +/-PG[P(1+ )-...

A-10 APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2 September 1995 Transmitter Tag Descriptor Message Day / Month / Year User ID No. Sensor Input Terminals Damping Zero/Span (MV Lo/Hi) Meas. Variables Units Normalization Transmitter ID Block Sensor Block Process Variable Range Process Variable Uni...

B-1 UM344-2 APPENDIX B - HAZARDOUS AREA INSTALLATION DRAWINGS September 1995 B.0 APPENDIX B - HAZARDOUS AREA INSTALLATION DRAWINGS This Appendix contains four Figures that present wiring and barrier selection information for installation of a Model Series 344 Transmitter in a hazardous location. Ref...

UM344-2 WARRANTY October 1996 W-1 WARRANTY The Company warrants all equipment manufactured by it and bearing its nameplate, and all repairs made by it, to be free from defects in material and workmanship under normal use and service. If any part of the equipment herein described, and sold by the Com...

PARTS LIST 9/95 Supersedes 8/91 Ref. UM344-2 XTC  MODEL 344 TEMPERATURE TRANSMITTER-CONTROLLER Drawing No. 15965-639PL MODELS PART NUMBERS 344BNNN1G 15965-1114 344BN5N1G 15965-1115 ITEM PART NUMBER DESCRIPTION QUANTITY 1* 2938-44 O-Ring 2 3 --- Enclosure Assembly 1 - 15965-761 NPT - - 15965-1029 EE...

PARTS LIST XTC MODEL 344 TEMPERATURE TRANSMITTER-CONTROLLER Drawing No. 15965-639PL

USER’S MANUAL ADDENDUM UMA344-2-1 Issue: 1 March 1996 CONTROLLER MODE INSTALLATION WIRING INVOLVED USER’S MANUAL UM344-2, Issue 1, September 1995, XTC™ Transmitters, Series 344 Temperature Transmitters, User’s Manual ADDITIONAL MATERIAL The wiring diagram on the next page is for a Model 344 Transmit...

USER’S MANUAL ADDENDUM UMA344-2-2 Issue: 1 March 1997 Ex N INSTALLATION CONDITION INVOLVED USER’S MANUAL UM344-2, Issue 1, XTC™ Transmitters, Series 344 Temperature Transmitters, User’s Manual ADDITIONAL MATERIAL The voltage at the loop terminals of a Model 344 installed in an area requiring an Ex N...