• All rights reserved. No part of this manual may be failure. reproduced in any form without Yokogawa’s written permission. • Yokogawa makes no warranty of any kind with regard to this manual, including, but not limited to, NOTE implied warranty of merchantability and fitness for a Draws attention to information essential for particular purpose.
1. INTRODUCTION (e) Modification 1.1 Safe Use of This Product • Yokogawa will not be liable for malfunctions or For the safety of the operator and to protect the damage resulting from any modification made to this instrument and the system, please be sure to follow this instrument by the customer.
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1) Turn on only the communicator. 2) Call Utility from the main menu and press [→] . 3) Call Simulation and press [→] . 4) Select YOKOGAWA from the list of manufacturers by pressing [ ] ↓
and press [→] .
2. CONDITIONS OF COMMUNICATION LINE CONDITIONS OF COMMUNICATION LINE The HART communication signal is superimposed 2.2 Communication Line Re- onto the 4 to 20 mA DC analog signal. Since the quirements modulated wave is a communication signal, superim- posing it on the normal signal will, from basic prin- Specifications for communication line: ciples, cause no error in the DC component of the Supply voltage (general use type): 16.6 to 42 V DC...
3. OPERATION OPERATION 3.1 Basic Operation of the 275 HART Communicator 3.1.1 Keys and Functions Communication cable LCD (liquid crystal display) (21 characters×8 lines) Function keys Functions of the keys are indicated on the display. Pressing (HOME) when the display is as shown changes the display to the Online EJX: menu.
Tag (8 characters) <a> current menu device, or mark because of a current menu data to send comunication error EJX :YOKOGAWA PGUP PGDN Online answer to move up one move down one answer to <b> 1 Device setup...
4 LRV Display appears when the 5 URV ENTER HART Communicator is turned on. Select Device setup. Example: To change from Tag YOKOGAWA to FI1-1A. Call up the Tag setting display. EJX:YOKOGAWA Device setup ×2 1 Process Varlables 2 Diag/Service 1.
3. OPERATION 3.2 Parameter Usage and Selec- IMPORTANT tion After setting and sending data with the HART communicator, wait 30 seconds before turning Before setting a parameter, please see the following off the transmitter. If it is turned off too soon, the table for a summary of how and when each parameter settings will not be stored in the transmitter.
3. OPERATION 3.3 Menu Tree (Diag/Service) (Device setup) (Process variables) 1 Test device 1 Status 1 Status group 1 1 Process variables 1 Pres 2 Self test 2 Status group 2 2 Pres % 3 Status group 3 3 AO 4 Status group 4 4 SP 5 Status group 5...
ENTER HELP SAVE HOME F0309.EPS (3) Message Note that the Yokogawa default setting for the standard 1. Device setup EJX:YOKOGAWA temperature is 4 C (39.2 F). For the units of mmH Message O, and ftH O, the pressure varies according to the 3.
Example: To change the range from 0 to 2500 mmH O to 500 to 3500 mmH Call up the Keypad input display. 1. Device setup 3. Basic setup 3. Re-range 1. Keypad input EJX:YOKOGAWA Keypad input 1 LRV 0.0 mmH2O 2 URV 2500.0 mmH2O 3 Unit mmH2O 4 LSL -10197.2 mmH2O...
1. Device setup cause the lower range value to change. Thus, chang- ing the upper range value also changes the span. 3. Basic setup 3. Re-range 2. Apply values EJX:YOKOGAWA WARN-Loop should be removed from automatic control (OK) Press OK (F4).
1. Device setup constant between 0.00 and 0.49 seconds. 3. Basic setup 5. Xfer fnctn Example: To change from 2.0 seconds to 0.5 seconds Call up the Pres Damp display. EJX:YOKOGAWA Xfer function Linear Linear 1. Device setup Sq root 3.
Note that when the output modes of the output signal 9. H/L Swap and the display are selected as Sq root and Linear accordingly, the low cut function is not available for EJX:YOKOGAWA H/L Swap the display value. Normal Normal...
Indicates values of input pressure 1. Disp select (PRES) with the indication limits 99999 to 1. Disp Out 1 99999. PRES 456 kPa EJX:YOKOGAWA Disp Out 1 PRES % PRES % ENGR. PRES % of range Indicates input pressure in 2.5 to SP %...
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‘– 5 0’ inHgA Nl/h g/cm3 EJX:YOKOGAWA Engr LRV FX0302.EPS (ENTER) ENTER Follow the procedure below to set your own unit. Call up the Engr LRV Display.Set –50, and press ENTER (F4). Example: Set the engineering unit as M/h.
Example: Change the unit for the temperature display from degC to degF. 4. Detailed setup 1. Sensors 1. Device setup 2. SP sensor 4. Detailed setup 3. SP Unit 1. Sensors 3. Temp sensor EJX:YOKOGAWA SP Unit 3. Temp Unit mmH2O kg/cm2 torr EJX:YOKOGAWA HELP SEND ENTER...
(-2.5%) to 21.6 mA (110%) . test output will continue for approximately 10 minutes. Example: To output 12 mA (50%) 1. Device setup 2. Diag/Service 2. Loop test EJX:YOKOGAWA WARN-loop should be removed from automatic control (OK) Set the control loop in manual ABORT mode, and press OK (F4).
Zeroing—Pres Zero trim 2. Pres Trim Pres Zero trim carries out the zero adjustment and automatically sets the applied “0” input values to the EJX:YOKOGAWA Select trim mode output value of “0,” keeping the span constant. Use 1 Off...
100% points within the 2. Pres Trim calibration range. In the manual method, the reference pressure should EJX:YOKOGAWA Select trim mode ×3 1 Off also be applied to the transmitter at both lower and...
Example 1: For an adjustment using an ammeter (±1µA is measurable) 1. Device setup 2 Diag/Service 3. Calibration 2. Analog output trim 1. D/A trim EJX:YOKOGAWA Analog output trim 1 D/A trim 2 Scaled D/A trim 3 Clear D/A trim Select the D/A trim item. HELP...
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3. OPERATION Example 2: To adjust using a voltmeter EJX:YOKOGAWA Fld dev output 4.000 mA equal to reference 1. Device setup meter? (ENTER) 1 Yes 2 No 2 Diag/Service Ammeter reading: 4.000 HELP ABORT ENTER 3. Calibration If the reading on the ammeter is 2.
3. OPERATION 3.5.9 Burst Mode ‘1 . 0 1’ EJX:YOKOGAWA When the burst mode is set on, the transmitter continu- Enter meter value 1.000000 ously sends stored data. Either the pressure value, % 1.010 (ENTER) range/current value, or current/process variables can be...
3. OPERATION 3.5.10 Multidrop Mode Example: Communication when set in multidrop mode “Multidropping” transmitters refers to the connection of several transmitters to a single communications HART Communicator (1) The HART communicator transmission line. Up to 15 transmitters can be con- Online searches for a transmitter that is 1 EJX110A-1...
3. OPERATION 3.5.11 External Switch Mode 3.5.12 CPU Failure Burnout Direction and Hardware Write Protect Follow the procedure below to enable or inhibit zero point adjustment by means of the zero-adjustment There are two slide switches on the CPU assembly screw on the transmitter.
3. OPERATION 3.5.13 Software Write Protect EJX: EJX configured data is saved by using a write protect It changed the state of protection related function. The write protect status is set to “Yes” when password. (OK) 8 alphanumeric characters are entered in the New Press OK (F4).
Write Protect mode by 1 S.C. Disabled 2 Num of points (SEND) 3 point setting using the general use password: “YOKOGAWA.” 4 X Start 0.00 % 5 Y Start 0.00 % Press SEND (F2) to send the data...
3. OPERATION 3.5.15 Process Alarm Example: Set the signal characterizer to Enabled. The function is used to display the alarm codes when 1. Device setup the input pressure exceeds the specified value within 4. Detailed setup the calibration range. The same is available for the 2.
3. OPERATION 3.5.16 Status Output (option code AL) Example: Status output operation of ON WHEN AL. DETECT This feature is used for a transistor output (open Status output for higher alert value collector) of an on/off signal according to the status of Output high and low alarm limits, which are user-configurable 5% of hysteresis...
3. OPERATION 3.5.17 Capillary Fill Fluid Density Compensa- EJX118A tion For transmitters with diaphragm seals, this function is used to compensate the zero shift caused by the Transmitter ambient temperature effect on the capillary tubes. The following equation indicates the relationship between the calculated output value and the compen- sating constant K (%/ C) with the measured ambient EJX438A...
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3. OPERATION Table A. Constant value [B] of fill fluid Fill fluid A, C code 0.76 0.87 1.45 0.75 kgf/cm 0.000076 0.000087 0.000145 0.000075 0.00745 0.00853 0.01422 0.00736 mBar 0.07453 0.08532 0.14220 0.07355 0.000074 0.000084 0.000140 0.000073 0.02992 0.03425 0.05709 0.02953 0.00108 0.00124...
4. SELF-DIAGNOSTICS SELF-DIAGNOSTICS 4.1 Self-Diagnostics Diagnostic by “status” 1. Device setup 4.1.1 Identify Problems by Using the Communicator 2. Diag/Service 1. Test device The HART communicator can be used to run self- diagnostics on a transmitter and check for incorrect 1.
4. SELF-DIAGNOSTICS 4.2 Alarms and Countermeasures Table 4.2.1 Alarm Message Summary Integral HART communicator Output operation Status Cause Countermeasure indicator display during error group AL. 01 P sensor error Sensor problem. Outputs the signal (High or Low) Replace capsule when CAP.
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4. SELF-DIAGNOSTICS Table 4.2.2 HART Communicator Error Messages Error message Probable cause Countermeasure Change the setting. — Invalid selection Value was too high Set value is too high. Value was too low Set value is too low. — — Too few data bytes received —...
1, 3, 4, 2 Device information Dev id Device ID 1, 4, 5, 1, ↓, 6 Distributor Yokogawa 1, 4, 5, 1, ↓, 7 Drain vent matl Drain and vent plug material 1, 4, 5, 2, 5 Extra No. Customization number 1, 4, 5, 1, ↓, 4...
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5. PARAMETER SUMMARY Fast key Function Label Item Contents Default value Handling sequences Process variables Analog output current 3.6000 to 21.6000 mA 1, 1, 3 Engr Disp User scaled value 32000 to 32000, unit specified in Set Engr Unit 1, 1, 7 Engr Unit User set engineering unit Unit specified in Set Engr Unit...
A1.2.2 Diagnostic Response Time Failures that are detected should be reported to The EJX will report an internal failure within 5 Yokogawa. seconds of the fault occurrence. The personnel performing the proof test of the trans- mitter should be trained in SIS operations including A1.2.3 Setup...
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EJX lifetimes beyond 50 years may yield results that A1.2.9 Reliability Data are too optimistic, i.e. the calculated Safety Integrity Level will not be achieved. A detailed Failure Mode, Effects, and Diagnostics Analysis (FMEDA) report is available from Yokogawa with all failure rates and failure modes. IM 01C25T01-01E...
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APPENDIX 1. SAFETY INSTRUMENTED SYSTEMS INSTALLATION A1.2.11 Environmental Limits Safety Assessment The investigation to arrive at a judgment -based on evidence- of The environmental limits of the EJX are specified in the safety achieved by safety- the user’s manual IM 01C25. related systems A1.2.12 Application Limits Further definitions of terms used for safety techniques...
REVISION RECORD Title: EJX Series HART Communication Type Manual No.: IM 01C25T01-01E Edition Date Page Revised Item Mar. 2004 – New publication Apr. 2004 – Revise words and phrases 3-26 3.5.16 • Add section 3.5.16 Status Output Oct. 2004 3-27 3.5.17 •...
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