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FLOW ELECTRONICS FOR
TRANSMITTERS INSTRUMENTATION
EMO-500
Operation Manual rev.4
8809 Industrial Drive, Franksville, WI 53126-9337
Tel: 262-884-9800 Fax: 262-884-9810
E-Mail: aw@awcompany.com Web: www.awcompany.com
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EMO 500 MANUAL TABLE OF CONTENTS Table of Contents.......................................................................................................................... 2 Overview of Display Screens ....................................................................................................... 3 Introduction................................................................................................................................... 4 Special
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Overview of Display Screens The 0 through 9, and F1 keys display these screens except when programming. RATIOA/B = 1.19 = = =>Current Ratio A/B 0-KEY = = => W=Y A=N I = 1.00 = = =>Warning, Alarm, Ideal Ratio FLW A=139.3 CCM = = = > Flow A 1-KEY = = => FLW B=136.3 CCM = = = > Flow B JOB A=10779. CC = = = > Job Total A 2-KEY = = => JOB B=11703. CC = = = > Job Total B GR A=300912. CC = = = > Grand Total A 3-KEY = = => GR B=313391. CC = = = > Grand Total
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Introduction The EMO-500 is a Two Component Ratio and Flow Computer. It is primarily designed for use as a two component, ratio monitoring unit but can also be used as a Two Channel Flow Rate Monitor and Totalizer. The EMO 500 has the added capability of current (4-20mA) and voltage (0-5V) analog output signals. These outputs can be used as a representation of a selectable range of functions or in a ratio linked, closed loop mode - Ratio Feedback Mode
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Special Features of the EMO-500 The EMO 500 is especially suited for use in dispensing systems with irregular flow patterns. The unit employs a user programmable sampling size to govern how often the ratio display is updated - the operator then has maximum control over the sampling period and can easily adjust this to suit his own system parameters. The user is often more interested in the ratio of components dispensed over a period of time, say in a batch, rather than on an instant
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Hardware Connections Warning: The AC Power should be wired just as labeled on the three pin connector. PIN 1-Ground PIN 2-Line 110v. PIN 3-Line Neutral Grounding Considerations The grounding is a most important consideration in an installation where microprocessor technology is applied. The EMO-500 is a panel mounted unit and therefore the casing is connected to the sub-panel. If the sub-panel is metal it should be grounded. If
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Hardware for External Resets and Controls There are 5 inputs to the 15 pin connector to provide extra control capability without having to go through the keyboard. To activate the external resets and controls the user should simply connect the respective pin to the common 1 - 5 pin. Pins 1 - 4 are edge triggered, therefore momentary contact switches should be used to activate them. Pin 5 (enable programming) is an on/off function and single pole toggle switch is recommended.
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External Resets and Controls 1. Reset All This reset is the most powerful on the EMO 500. When activated it will reset: Ratio : A/B Job Vol A, Job Vol B & Job Vol A+B Warning & Alarm Limits Limits 3 & 4 Grand Totals Analog Outputs to start point 2. Scroll Display When activated, this input will scroll the display through all of the 11 screens available. It also allow
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The Quick Program Options While many programming variables such as KFR or meter selection may only require a "one time" setting - others may require some experimentation to find maximum efficiency settings. It may also prove desirable to allow an operator in the field some limited ability to make some quick adjustments. To accommodate these circumstances a method of jumping directly into some limited programming functions has been made available. This method is call
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F1 Ratio Default Value = 1.00 This function is the address of the IDEAL RATIO which represents the desired ratio of FLOW A/FLOW B. The default is 1.00 which represents a 1 to 1 ratio. F2 Gate Time Default Value = 1.85 The GATE TIME is the period of time, in seconds, during which the flow rate calculation is made. The accuracy and response time of the flow rate display is therefore dependent upon this value. To achieve a 1% accuracy, the sl
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Programming the EMO 500 As a security precaution, access to the full programming section is only possible when pin 5 is "enabled". This can be accomplished by connecting pin 5, on the 15 pin connector, to the pin 6 Common (See Appendix D). Next, after first hitting F2, each function key, F1 through F6, will then allow access to the programming menu indicated immediately above it on the red banner strip (The banner strip is labeled 'PROGRAMMING' as indicated below). PROGRA
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The F1 key serves as an ESCAPE key to leave the programming functions and return to the last screen displayed. The F2 key will page the user through the programming options shown above AND IS REQUIRED TO ALLOW FURTHER ACCESS. The F3 key will call up Ratio Programming. < Enter the Ideal Ratio. This number represents the desired Ratio of Flow Amount A to Flow Amount B. The default is 1.00, meaning a 1 to 1 ratio. < Enter the Ratio Warning. This nu
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The F4 key will call up Limit Programming. OFF-RATIO WARNING & ALARM SETTINGS Since the EMO 500 is primarily a Ratio Monitor, Limits 1 and 2 are factory set to be triggered by an off-ratio condition. Default values are set at Limit 1 = Warning 5% and Limit 2 = Alarm 10%. For example: If the RATIO WARNING is programmed at +/- 10%, then the LIMIT 1 contact will close when this event occurs. LIMIT 2 will be similarly activated by the value programmed in the RATIO ALARM. Note - P
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As mentioned previously, Limits 1 & 2 are preset for ratio alarms and are very easily adjusted for different ratio settings via the Quick Programming. Limits 3 & 4 can be used to warn of other monitored parameters such as flow rates or totalized fluid volumes. These settings can be adjusted as follows. There are three parts to the full Limit Programming section and each part should be done in order. They are: 1. Limit 3 Rule & value 2. Limit 4 Rule & value 3. Limit
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For example - Limit 1 & 2 can be programmed for Warning & Alarm settings on Flow A while Limit 3 & 4 could be allocated to Warning & Alarm for Flow B or Flow A+B and Total B respectively. Therefore Limits 3 and 4 can be selected independently but 1 & 2 cannot be separated. Therefore, if Ratio A/B is selected under the Limit 2 rule, the limit programming is complete. The unit will exit to the last display in memory before entering the programming mode. Other options are as foll
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The EMO 500 will flash "Direct Selection, Meter A or B" then the display will read "F2=A, F3=B, F4=A&B". This is where the user can choose the input the selected Flow Meter and Engineering Unit will be set. The display will the read "More Selections?, F2=Yes, F3=No". If both Flow Meters are programmed select F3, if not F2 will start the Meters/Units Program section again. NOTE: The Engineering Units for A and B should be the same. NOTE: The (KFR) and (KFT) values in the
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F6 key will call up Global Programming. Global Default Values 1. KFR for A ----------- 100.0 2. KFT for A ----------- 10000 3. KFR for B ----------- 100.0 4. KFT for B ----------- 10000 5. Units for Rate ----------- 12 Hz 6. Units for Total ----------- 08 Impulses 200 Impulses 7. Sample Size ----------- 8. Gate Time ----------- 1.85seconds 9. Analog Offset ----------- 0000 10. Analog Gain ----------- 10200 11. Analog
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EXPLANATIONS OF THE GLOBAL VARIABLES 1. KFR for A.....Default 100.0 In order to make the EMO 500 display the correct rate in an engineering unit such as GPM, a scaling factor must be calculated. This Rate Scaling Factor is called the KFR. The KFR is calculated using the K-factor of the flow transmitter being monitored. The K-factor is the number of impulses per engineering unit established by a calibration test. For example: A flow meter could have a K-factor of 6
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2. KFT for A ................................................................................................Default 10000 In order to make the EMO 500 display the correct Totalized Value in Engineering Units, again the most important thing to know is the K-factor of the flow meter. The K-factor is the relationship between the amount of the impulses and the engineering units. In order to calculate the KFT for the EMO 500 apply the following formula.
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5. Units for Rate. This variable will display the Engineering Units required for the flow rate display. This is strictly a display and does not perform the actual conversion of raw counted impulses. Those calculations are handled by the KFR. Enter the two digit number for the desired Units for Rate. 00 - cc/min 06 - gram/sec 01 - liter/min 07 - lb/min 02 - gallon/min 08 - Kg/min 03 - ounce/min 09 - Kg/sec 04 - RPM 10 - lb/sec 05 - gram/min 11 - lb/Hr 12 - Hz (Impul
