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FEM-03

OperaƟon & InstallaƟon Manual

Rev. 2

FLOW MONITOR

Summary of content (44 pages)

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FEM-03 FLOW MONITOR OperaƟon & InstallaƟon Manual Rev.
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FEM-03 Flow Monitor Operation and Programming Manual Table of Contents Safety Definitions and Information............................................................................................................... 5 Unpacking ..................................................................................................................................................... 5 Quick Guide .....................................................................................................................
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FEM-03 Flow Monitor Operation and Programming Manual Gate Time Method .............................................................................................................................. 15 RATE A or B GT (RATE A or B Gate Time) .................................................................................................. 15 RATE A or B PL (RATE A or B Pulse Length) ..............................................................................................
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FEM-03 Flow Monitor Operation and Programming Manual ENG UNITS A or B .................................................................................................................................... 25 RATIO AB/RATIO BA Programming (FEM-03Ax only).............................................................................. 25 IDEAL AB/IDEAL BA ............................................................................................................................. 26 WARNING AB/WARNING BA ..........
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FEM-03 Flow Monitor Operation and Programming Manual Variable Addressing and Serial Command Variables .............................................................................. 37 Example QBASIC Program for Protocol Communications ...................................................................... 39 Limited Warranty ........................................................................................................................................
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FEM-03 Flow Monitor Operation and Programming Manual Safety Definitions and Information Do not attempt to install or use your AW Gear Meters product until you have read the safety instructions in this section. Save this manual and keep it in an easily accessible place. Warning! Warning means that failure to follow this safety statement may result in extensive product damage, serious personal injury, or death.
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FEM-03 Flow Monitor Operation and Programming Manual Quick Guide Caution As with any precision-engineered device, always operate the FEM-03 in accordance with the manufacturer’s instructions. Connect to Sensor You will connect three wires from the sensor to the back of the FEM-03:    a red wire (electrical power) a white wire (signal), and a black wire (ground) Notice Color of wires may vary. Insert the stripped end of the red wire into upper terminal #1 and use a screwdriver to secure.
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FEM-03 Flow Monitor Operation and Programming Manual When in programming mode, the left-most alphanumeric character blinks. Use the UP or DN keys to increase or decrease the value. Use the SEL key to move to the next selection. When you have achieved the desired value, press ENT to store. See Programming the FEM-03 beginning on Page 21 for complete details.
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FEM-03 Flow Monitor Operation and Programming Manual Features        RS-232 communication Serial port for serial protocol communication or printer (adaptor required) Two programmable Form C Relay outputs Assignable 4-20 mA output (optional) Large, easy-to-read LCD display Single or dual channel models Ratio monitor version available Model Number Key FEM-03 A __ Single Channel Rate/Totalizer Two Form C Limit Relay Outputs RS232 Communications Plus 4-20 MilliAmp Output Dual Channel Rate/Totalizer
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FEM-03 Flow Monitor Operation and Programming Manual Analog Output 4-20 mA  self-powered loop output into a maximum 400 Ohm load impedance Relay Contact Ratings Maximum Switched Power Resistive Load Inductive Load Maximum Switched Voltage Maximum Switched Current Rated Load Resistive Load Inductive Load DC: 60W AC: 125VA DC: 30W AC: 60VA 220V DC, 250V AC 2A DC: 30V, 2A AC: 110V, 0.5A DC: 30V, 1A AC: 110V, 0.3A Caution Do not use 115 VAC through relay contacts. Use 24 VDC instead.
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FEM-03 Flow Monitor Operation and Programming Manual connections. Refer to drawing #301199 FEM-03 on page 41 for schematic details of the FEM-03 inputs and outputs. Upper Connector Terminal Designations UP 1 +15VDC OUT – power supply for the transmitter. Approx. 15VDC (power supply dependent), approx. 20mA. max. UP 2 DC COMMON – power supply common for the transmitter (floating). UP 3 FREQ. A INPUT – frequency input from the transmitter. 0-4KHz, 4 volts minimum, 10Kohm maximum input impedance.
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FEM-03 Flow Monitor Operation and Programming Manual Lower Connector Terminal Designations DN 1 +15VDC OUT – power supply for the transmitter. Approx. 15VDC (power supply dependent), approx. 20mA. max. DN 2 DC COMMON – power supply common for the transmitter and serial port. DN 3 FREQ. B INPUT – (model FEM-03A2 or -03Ax only). Frequency input from a transmitter. 0-4KHz, 4 volts minimum, 10KOhm maximum input impedance.
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FEM-03 Flow Monitor Operation and Programming Manual # UPPER CONNECTOR UP 1 UP 2 UP 3 UP 4 UP 5 UP 6 UP 7 UP 8 UP 9 +15 VDC Out DC Common Freq. A Input Not Used Not Used + mAmp Output * - mAmp Output * Limit 2 Common Limit 2 N.C. UP 10 Limit 2 N.O. # LOWER CONNECTOR DN 1 +15 VDC Out DN 2 DC Common DN 3 Freq. B Input ** DN 4 RS232 TX Out DN 5 RS232 RX Input DN 6 Reset Total DN 7 DC Common DN 8 Limit 1 Common DN 9 Limit 1 N.C. DN 10 Limit 1 N.O.
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FEM-03 Flow Monitor Operation and Programming Manual Terms and Definitions Following are basic terms and definitions you will need to know in order program and operate the FEM3 Flow Monitor. Engineering unit a unit of measure, such as liter, cubic centimeter, gallon, ounce, gram, kilogram, pound, rpm, or Hz. K-factor (KFR) is a scaling factor based on the average number of transducer pulses per engineering unit; used to determine rate Gate time update time interval for display and analog output (.
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FEM-03 Flow Monitor Operation and Programming Manual Notice Be careful to insert the new memory IC in the exact orientation as the one you removed. You must reprogram user-defined variables after changing memory IC.
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FEM-03 Flow Monitor Operation and Programming Manual Pulse Width Method This method calculates rate based on the time from pulse edge to pulse edge. It updates more frequently at high-input frequencies and less frequently with lower-input frequencies, producing stable display response especially at frequencies below 100 Hz. Gate Time Method This method calculates rate based on the number of pulses counted during a prescribed time period.
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FEM-03 Flow Monitor Operation and Programming Manual Job or Grand Total Channel A or B The FEM-03 displays the JOB or GRAND total for channel A or B based on the KFTs, engineering units, and decimal locations. The initial total display is JOB total, which shows the current total accumulating in TOTAL A or TOTAL B. GR TOTAL is the actual real-time sum of JOB total plus the current value of the GRAND total. View the Grand totals from the TOTAL display. Use SEL to switch between the TOTAL and GR TOTAL.
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FEM-03 Flow Monitor Operation and Programming Manual feature automatically reduces decimal resolution up to a maximum of two decimal places before rolling over to zero and losing the total. Example: For a KFT with four decimal places, the GRAND total will reach 9999.99 instead of 99.9999 before resetting to zero. The FEM-03 retains both totals when the power is removed.
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FEM-03 Flow Monitor Operation and Programming Manual LIMITS The FEM-03 has two programmable limit outputs: L1 and L2. The LIMIT display shows:    to what function each limit is assigned the value (in engineering units) at which each limit becomes active the current status of the limit outputs The limit values are displayed using KFR or KFT, decimal location, and engineering units corresponding to the limit assignment.
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FEM-03 Flow Monitor Operation and Programming Manual RATE W/ TOTAL Use the RATE A_TOT A or RATE B_TOT B displays to view RATE A or B PL and TOTAL A or B (Job or Grand). RATE is based on the pulse length method. Rates and totals are shown in the engineering units based on the programmed KFR and KFT factors and decimal locations. Use SEL to switch between GR TOTALs, TOTAL A or B (TA or TB, and GR TOTAL A or B (GA or GB). After a power cycle, the FEM-03 reverts to the Job Total (TA or TB).
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FEM-03 Flow Monitor Operation and Programming Manual RATE A + B/RATE A – B/TOT A – B (FEM-03A2 and -03Ax only, TOTAL A-B as of Rev 1.23 only) Notice For RATE A+B and RATE A-B, KFR A and KFR B Engineering Units must be the same. The display indicates NO MATCH if the A and B KFR Engineering Units do not match. For TOTAL A-B and GRTOT A-B, both KFT A and KFT B Engineering Units and number of decimal places must be the same.
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FEM-03 Flow Monitor Operation and Programming Manual SERIAL PORT SETUP Display Mode The SERIAL PORT SETUP display is useful during startup when the FEM-03 serial protocol (OPTOMUX) is used for communication. Use this display to set the baud rate and unit number while in program mode, or observe communications in display mode. To aid in startup and troubleshooting, the FEM-03 SERIAL PORT SETUP screen displays any incoming strings in the RECEIVE line, and the FEM-03 response string in the SEND line.
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FEM-03 Flow Monitor Operation and Programming Manual have completed them. A blinking cursor highlights the active digit or field when entering or editing a value. As you press SEL, the cursor starts on the left-most digit or character, moves to the right, and wraps around to the left. Press and hold the UP or DN key to increase or decrease the value. When the complete, desired value displays, press ENT to store it and advance to the next variable.
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FEM-03 Flow Monitor Operation and Programming Manual For example: A flowmeter has a K-factor 2053.57 imp/Gal and the display should read in Gal/Min. with accuracy to three decimal places. KFR = 6000/2053.57 = 2.921741 for GPM Round off 2.921741 to three decimal places and enter 2.922 for KFR. GATE A B (Gate Time) This variable      sets the sample time on the incoming frequency for the RATE A GT and RATE B GT (Gate Time) displays is programmed in tenths of a second (the allowable range is from .
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FEM-03 Flow Monitor Operation and Programming Manual ENG UNITS A or B The desired engineering units for display of rate are programmable using up to four letters. Example: GPM_ Default is: HZ__ The left-most character is highlighted with the blinking cursor first. The SEL key moves the cursor; use the UP and DN keys to scroll through the alphabet. After you have entered all characters, press the ENT key to store the variable.
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FEM-03 Flow Monitor Operation and Programming Manual  K-FACTOR is the average number of pulses per desired engineering unit that the transducer produces. Method: 1. Determine the number of decimal places desired for total display. 2. Round off the result of the formula to the desired accuracy. 3. Enter the KFT using only that number of decimal places. Using too few decimal places can cause relatively large display errors up to several percent of actual reading.
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FEM-03 Flow Monitor Operation and Programming Manual  For ratio warning and alarm limits, assign LIMITS to the RATIO function (see LIMITS Programming on page 28) To program RATIO, use the MODE key UP to select either the RATIO A/B or RATIO B/A display. Press and hold the ENT key. The display first shows a P in the lower left-hand corner and then displays the first program variable for this mode.
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FEM-03 Flow Monitor Operation and Programming Manual produce large errors. If the TARGET NBR is too large, the ratio will not be calculated frequently. The allowable range for TARGET NBR is from 1 to 65534. The recommended typical range for values is from 200 to 2000. Initial value is 500. ANALOG OUT Programming (FEM-03A, -03A2 and -03Ax only) The FEM-03A, -03A2 and -03Ax have a 12-bit analog output with programmable span and scaling.
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FEM-03 Flow Monitor Operation and Programming Manual The number displayed indicates the current function of the analog output. The initial assignment for the ANALOG POINT is RATE A GT (#00). RATE or TOTAL produces an output ranging from the MA OFFSET value (0-10 mA) for a zero value, to 20 mA for the maximum programmed flow rate or total. RATE A DIR is only for bi-directional flow-rate and will split the output span in half producing an output between 10 and 15mA (depending on MA OFFSET) for zero flow.
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FEM-03 Flow Monitor Operation and Programming Manual TOTAL Limits To operate a limit based on the JOB TOTAL, select TOTAL A or TOTAL B for the Limit function. The limit activates whenever the TOTAL equals or exceeds the programmed value. CYCLE OUT Assigning a limit to the CYCLE OUT function toggles the state of the limit output whenever Job TOTAL A increments by the cycle amount. The output remains ON until the cycle amount accumulates, and turns OFF until the cycle amount accumulates again.
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FEM-03 Flow Monitor Operation and Programming Manual MARGIN in percent. The left-most digit is highlighted with the blinking cursor. Move the cursor using the SEL key. Use the UP or DN key to increase or decrease each digit’s value. 6. When editing is complete and the desired value is displayed, press ENT to store the programmed RATE LIMIT MARGIN. The FEM highlights the L2 indication with a blinking cursor. 7. Repeat the procedures used for L1. 8.
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FEM-03 Flow Monitor Operation and Programming Manual 1. Press and hold the ENT key to access the parameters for the serial port. A “P” appears in the lower left hand corner and SELECT SPEED appears in the second line of the display. 2. Use the SEL key to select from the four available choices: 9600 (default) 19200 38400 57600 3. When the desired baud is displayed, press ENT to store. UNIT NUMBER appears next in the second line with the blinking cursor highlighting the left-most digit.
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FEM-03 Flow Monitor Operation and Programming Manual TIME PRINT The FEM-03 prints the following:       the current elapsed time since power-on a sequential printout number Rate A PL Rate B PL Job TOTAL A Job TOTAL B These print at a specified time interval in Hours. Valid numbers are 00.001 Hours (3.6 seconds) to 10.000 Hours. TIME PRINT reverts to a disabled state whenever power to the FEM is removed, and must be reactivated after each power cycle.
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FEM-03 Flow Monitor Operation and Programming Manual  Job TOTAL B Activate Mode of Choice To activate and select a printer function: 1. Select the PRINTER SCR display using the UP key. 2. Press and hold ENT until the FEM-03 displays the “PRINTER ON” prompt. 3. The unit first offers a NO response. To activate a print function, use the SEL key to toggle the response to YES and press ENT. The unit now prompts for the mode selection. 4.
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FEM-03 Flow Monitor Operation and Programming Manual FEM-03 Serial Communications The FEM-03 has RS-232 serial port connections on the Lower Connector on the back panel. The user can connect this port to a host computer, and then Read or Write to any RAM memory location in the FEM03 using the OPTOMUX serial protocol. The RS-232 terminals on the Lower connector are:    terminal DN 2 = DC Common - connect to pin 5 ( comm.
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FEM-03 Flow Monitor Operation and Programming Manual The answer received back from the FEM-03 will look like this: A03E36712XXcr ^.............……….all answers start with A ^^...........……….low byte in Hex at address 0F34 (MSB) ^^.........……….next byte in Hex at address 0F35 ^^....………....next byte in Hex at address 0F36 ^^.....………..high byte in Hex at address 0F37 (LSB) ^^...………...checksum ..………….
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FEM-03 Flow Monitor Operation and Programming Manual Serial Error Codes If a read or write operation is not successful, the Fem-03 returns one of the following error messages:      NO1cr – Undefined command (something other than K/J) NO2cr – allowable read range exceeded (addresses 0 to 500 [000H to 01F4H] allowed) NO3cr – read error (read request exceeded 12 characters) NO4cr – FEM detected a checksum error in the lower byte NO5cr – FEM detected a checksum error in the higher byte Checksum Calculat
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FEM-03 Flow Monitor Operation and Programming Manual The FEM-03 does not discriminate any addresses. This means that any address can be written to as well as read from. Writing to certain addresses can seriously alter the operation of the FEM-03. Use extreme caution when attempting to write to the FEM-03 variable locations.
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FEM-03 Flow Monitor Operation and Programming Manual Read/Write Variables Rate A (PL measurement) Rate A (GT measurement) Job Total A (READ ONLY) Grand Total A (READ ONLY) A-KFR for Rate A-KFR decimal point location A-KFT for Total A-KFT decimal point location A-Rate Engineering units A-Total Engineering units A-Flow Direction Rate B (PL measurement) Rate B (GT measurement) Job Total B (READ ONLY) Grand Total B (READ ONLY) B-KFR for Rate B-KFR decimal point location B-Rate Engineering units B-KFT for Total
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FEM-03 Flow Monitor Operation and Programming Manual Read/Write Variables Serial Speed 1=9600 Baud 2=19200 Baud 3=38400 Baud 4=57600 Baud Unit Number (communication offset) Address 00C2H Length 1Byte Data (Cont’d) 00BFH 1Byte Default is 01 FEM Serial Command Variables Serial RESET TOTAL Command 1=Resets Job A 2= Resets Job B 3= Resets Jobs A and B 4=Resets Grand and Job A 5-Resets Grand and Job B 6=Resets All Address 00C4H Length 1Byte Data will return to 0 Update EEPROM Command Any number except
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FEM-03 Flow Monitor Operation and Programming Manual DEFINT A-Z '* Serial Communication Test Program for OPTOMUX Code '* For use with AW Company's FEM-03 Series Flow Computers * Open serial port #1 to 9600 baud OPEN "COM1:9600,N,8,1,RS,CS,DS,CD" FOR RANDOM AS #1 '* set up loop for transmitting several strings CLS DO PRINT "Enter String to send.
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FEM-03 Flow Monitor Operation and Programming Manual 41
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FEM-03 Flow Monitor Operation and Programming Manual Limited Warranty AW Gear Meters warrants the product to be in good working order for a period of 1 (one) year from the date of purchase from AW Gear Meters or an authorized AW Gear Meters distributor. Should the product fail to be good working order at any time during this 1-year warranty period, AW Gear Meters will, at its option, repair or replace the product at no additional charge except as set forth below.