Table of Contents Introduction ................................................................................................................. 3 Section One ................................................................................................................ 5 Installing Your Scale ................................................................................................ 5 SETUP ..............................................................................................................
Appendix I ................................................................................................................ 22 User-Definable Units ............................................................................................. 22 X UNITS .............................................................................................................. 22 T UNITS .............................................................................................................. 23 Appendix II ...........
Introduction Thank you for purchasing a Setra precision counting scale. Its ease of operation and durable construction should provide years of convenient and reliable service. While your scale is easy to operate, it is advisable to read this guide carefully before use. It is designed to help you perform weighing, counting, and related operations quickly and accurately. This guide is divided into four major sections.
D.C.Connector RS-232 Serial Connector FIGURE 1. Components and features of the Setra precision counting scale.
Section One Installing Y our Scale SETUP 1. Locating your scale The rugged design of your Setra scale ensures it will withstand most typical environmental conditions. Nonetheless, you should treat your scale as you would any piece of precision equipment, locating it on a clean, dry surface, protected from extremes of draft and vibration. 2.
Section T wo Understanding Y our Scale KEYBOARD FUNCTIONS zero count setup/cal Clears the display and the tare register. Assigns the pan and whatever is currently being weighed a value of zero. Instructs the scale to begin or continue counting. Instructs the scale to accept calibration or to enter the advanced function programming mode. apw Instructs the scale to accept an average piece weight entry or display average piece weight.
DISPLAY SYMBOLS ok gross apw accum tare pc Reading shown is stable. Further operations may be performed. Reading shown is the gross weight, and includes both the net weight and tare weight. Reading shown is the average piece weight. Reading shown is the amount, in pieces or in weight, stored in the accumulator register. Reading shown is the weight stored in the tare register. Reading shown is given in number of pieces. g Reading shown is given in grams. oz Reading shown is given in ounces.
DISPLAY MESSAGES bUSY The scale is developing a stable reading. UnAbLE The scale is unable to complete your requested function. Clear the display, and select another function. OFLO The display is overloaded during counting. Remove some of the pieces, and weigh or count in smaller lots. FLASHING DISPLAY The weight on the pan exceeds the capacity of the scale. Remove some of the weight from the pan. If you are counting, count in smaller lots.
Section Three Using Y our Scale ENTERING A NUMBER OR FUNCTION To enter a number or function on your scale, simply press the key or keys which correspond to the numbers or functions you wish to enter. No key is necessary to request the weighing function, as it is automatically displayed when the scale is plugged in and something is placed on the pan. CLEARING A NUMBER OR FUNCTION To clear the last function or number you entered on the scale’s keyboard, simply press the clear key.
BASIC WEIGHING To weigh a sample on your scale, use the following procedure: 1. Press the zero key. 2. Place the object(s) to be weighed on the pan. 3. Wait for the “ok” symbol, then read the weight from the display. WEIGHING WITH THE TARE FUNCTION To weigh objects (or liquids) in a container without including the weight of the container, use the tare function. The container weight is subtracted from the display and stored in the tare register before you begin weighing.
6. Press the gross key. 7. Wait for the “ok” symbol, then read the gross weight from the display. Note: Pressing the gross key adds the tare (container) weight to the net (contents) weight to provide the gross (combined) weight. Pressing the gross key again (or pressing clear ) will return the display to the net weight. NET TOTALIZING BY WEIGHT In some applications, when totalizing the net weight, it is necessary to check the gross weight periodically to ensure the capacity of the scale is not exceeded.
BASIC COUNTING To count the number of like objects placed on your scale, use the following procedure: 1. Press the zero key. 2. Place a known number of pieces on the pan. 3. Enter the number of pieces you have placed on the pan. 4. Press the count key. 5. Add pieces to continue counting. 6. Wait for the "ok" symbol, then read the total number of pieces from the display.
COUNTING WITH THE GROSS FUNCTION You can use your scale to count the number of pieces being placed in a container, find the net weight of the pieces, and find the gross (combined) weight of the pieces and the container. To do so, use the following procedure: 1. Press the zero key and place the container on the pan. 2. Press the tare key, then place a known number of pieces in the container. 3. Enter the number of pieces placed in the container. 4. Press the count key. 5. Add pieces to continue counting. 6.
COUNTING WITH ACCURACY ENHANCEMENT When counting parts that are not uniform in weight, you can periodically update the average piece weight (APW) and thereby increase the accuracy. Each time the count key is pressed, the scale will update the APW as long as the additional weight is less than or equal to the previous sample weight. If the added weight is more than 100% of the previous sample, the APW will not be updated.
6. Remove pieces until the display reads the number of parts you wish to count out or kit. 7. Press the zero key. 8. Repeat Steps 6 and 7 as many times as needed. Note: If the average piece weight (APW) is known, you may press the — key, enter the APW, and press the apw key in place of Steps 3, 4, and 5. NET TOTALIZED COUNTING In some applications, when totalizing the number of pieces, it is necessary to check the gross weight periodically to ensure the capacity of the scale is not exceeded.
USING THE MINIMUM SAMPLE SIZE FEATURE Similar looking pieces often may vary in weight, so it is necessary to use a “significant” sample size when using your scale to count pieces. To count when your scale has been setup to require a minimum sample size (see Appendix II), use the following procedure: 1. Press the — key followed by the count key. The scale displays “Add nnn” where nnn represents the programmed minimum sample size. 2. Place the required number of pieces on the pan. 3. Press the count key. 4.
minimum weight necessary has been placed on the scale, it will instruct you to add the necessary number of pieces to the pan. To count, continue by following Steps 6-8. 6. Add the exact number of pieces requested by the scale. 7. Press the count key. The scale will display the number of pieces equal to the number necessary to meet the minimum accuracy required. 8. Add pieces to continue counting. 9. Wait for the "ok" symbol, then read the display. The scale now reads the total number of pieces on the pan.
6. Press the accum key. 7. Press the count key and remove the pieces. 8. Repeat Steps 1-7 (or Steps 5-7 for pieces from the same lot) anytime you wish to add to the accumulated count. 9. Press the ./rcl key. 10. Press the accum key. The total number of accumulated pieces is shown. Note: Whenever the scale is in the counting mode, the accumulated count may be recalled by pressing the keys ./rcl , accum . ASSIGNING AN I.D. NUMBER TO A BATCH To assign an I.D.
PRINTING OUT INFORMATION Your Setra scale is designed to print out requested or available information regarding a given batch when connected to a Setra Model 240P or 340P printer (see Appendix II). To print, use the following procedure: 1. Connect the printer’s AC adapter to a 110-volt outlet. 2. Connect the other end of the adapter to the printer. 3. Connect the appropriate end of the printer connection cord to the printer. 4. Connect the other end of the printer connection cord to the scale. 5.
Section Four Dual Scale Operation Dual platform, or dual scale, operations yield excellent counting accuracy for large counts using small sample sizes. It involves connecting two Setra scales together, sampling on one scale, and bulk counting on the other. The lighter capacity scale calculates the average piece weight using a very small sample size. (The accuracy of the average piece weight determines the accuracy of the count.
higher capacity scale must be in the normal mode (see Step #5 above). (Contact your Authorized Setra Dealer or the factory for more cabling information.) The dual scale system is now set up. Test the system by following the procedure below. USING A DUAL SCALE SYSTEM After performing the dual scale setup procedure, some of the scale’s functions change. The most important change is in the APW function which transmits the average piece weight and ID# from one scale to another.
Appendix I User-Definable Units USER-DEFINABLE UNITS User-definable units are units of measure whose conversion factors are determined by the user. Setra scales have two user-definable units of measure: X and T units. These units may be used to weigh in dollars (given the weight of one dollar of substance), length (given the weight of a known length of material), or volume (given the weight of a known volume of material).
T UNITS T units are tamperproof user-definable units which are indirectly changed by entering a factor or divisor. To change T units, proceed as follows: 1. Calculate the ratio you wish to enter. If your ratio is in grams per T unit, ounces per T unit, etc., you will enter a divisor. Proceed with Steps 2 through 10. If your ratio is in T units per gram, T units per ounce, T units per pound, etc., you will enter a factor. Proceed with Steps 2 through 10 skipping step 6. 2.
Appendix II Setup Functions PRINT FORMAT The print format function controls the printout of various measured and stored numbers. To format which functions are to be printed, use the following procedure: 1. Press the — key and enter 1111. 2. Press the setup/cal key. The display will read "CAL Pr." 3. Enter 0 if your scale is connected to a Setra Auto Count 200 (version 2.05 or lower). Enter 1 if your scale is connected to a Model 240P Printer.
Note: Your printer is now formatted. To change the print format, simply repeat Steps 1-15 above. The factory default setting prints out all known and available information. If an I.D. number has been entered, it will always print. When connected to a computer, if all print formats have been selected to be off (0), the scale will output "string format" (see Appendix VI). FORMATTING MINIMUM SAMPLE SIZE To set a minimum sample size when counting, use the following procedure: 1.
higher). The scale will return to the normal weighing mode and the bar code print mode may be accessed by pressing the ./rcl and print keys. 4. Press the setup/cal key. Press clear if you do not wish to proceed. 5. Read the display. The scale now asks if you wish to print the tare weight. 6. Enter 1 and press the setup/cal key. 7. Read the display. The scale now asks if you wish to print the gross weight. 8. Enter 0 and press the setup/cal key. 9. Read the display.
DUAL SCALE OPERATION The dual scale system involves connecting two Setra counting scales to achieve accurate bulk counts using small sample sizes . Dual scale operation is described in Section Four. For dual scale operation, follow this procedure for the sampling scale only: 1. Press the — key and enter 6666 . 2. Press the setup/cal key. The display will read “CAL dP”. 3. Press the setup/cal key again. The display will read “APW, 1 or 0”. Press clear if you do not wish to continue. 4.
RESTORING THE FACTORY DEFAULT SETUPS The many features described in this section allow the user to customize the scale to suit a particular application. However, in doing this it is also possible to inadvertently setup the scale in such a way that it will not operate as expected. To reset the scale to the original factory defaults, follow the steps outlined below. The factory defaults are set as follows: - Baud rate is equal to 2400 and no parity.
ALTERING DISPLAY UPDATE RATE The INT Mode is factory preset to provide a fast display update (short integration time) for filling parts to a target count/weight. The use of this mode can be altered to provide a slow display update (long integration time) for weighing in the presence of draft or vibration. Follow the procedure below to change the functionality of the INT mode to either slow or fast display update: 1. Press the — key and enter 11110. This is the INT mode selection access code. 2.
Appendix III Calibration Your Setra scale may be calibrated as often as desired. The scale should be span calibrated prior to initial use to correct for differences in gravity between your location and the factory. FULL SCALE SPAN CALIBRATION To calibrate your scale with a full scale weight (available from your dealer), use the following procedure: 1. Remove all weight from the pan. 2. Press the — key, then the clear key. 3. Press the zero key. 4. Place the weight on the pan. 5. Press the setup/cal key.
Appendix IV Typical Uses of Y our Scale: Examples Taring Out Box Weight Before Weighing Widgets Suppose you wish to fill an empty box with widgets and find the weight of the widgets in the box, not including the weight of the box. Using the tare function of your scale, you would place the empty box on the pan, tare out the box weight, and then load the widgets into the box. The resulting weight on the scale will be the net weight (the weight of the widgets without the box.
average weight of one microchip. Next you would press the apw key. You would then remove microchips until the scale reads 25. You would re-zero the scale and repeat the process until the desired number of kits has been completed. Counting Nonuniform Ball Bearings with Accuracy Enhancement Suppose you wish to accurately count nonuniform ball bearings using a small sample size. You would enter the number of pieces on the pan followed by “.0”. The scale will display tenths of pieces.
Appendix V Glossar y of Terms ACCURACY The degree of conformity of a measured value to the true value. AVERAGE PIECE WEIGHT The mean weight in a sample of like pieces; e.g., washers. BAUD RATE The rate at which your scale transmits or receives information to or from a computer or peripheral device. GROSS WEIGHT The weight of the contents (net weight) combined with the weight of its container (tare weight). KITTING Repeatedly removing a given number of parts for inclusion in a kit; e.g.
Appendix VI RS-232 Serial Data Communications Setra scales come equipped with a bidirectional RS-232 interface. Users who have purchased a Setra 240P or 340P printer may simply follow the directions under “Printing Out Information” in order to connect the scale with that unit. Users who are interfacing a scale to the Setra Auto Count 200 System should follow the installation instructions in the operator’s manual for that equipment.
Function ASCII Hexadecimal ACCUM M 4D APW A SETUP/CAL Function ASCII Hexadecimal - - 2D 41 0 0 30 F 46 1 1 31 CLEAR K 4B 2 2 32 CONV U 55 3 3 33 COUNT C 43 4 4 34 GROSS G 47 5 5 35 ID S 53 6 6 36 PRINT P 50 7 7 37 ./RCL . 2E 8 8 38 TARE T 54 9 9 39 ZERO Z 5A VERIFY V 56 ID START / 2F JUMP J 4A ID FINISH $ 24 IMMEDIATE PRINT # 23 Never include a carriage return or line feed in any command sequence.
To enter an ID# from a computer, send the following string to the scale: / [string identifier] $S The ID START (or introducer), “/”, instructs the scale to ignore subsequent characters as commands. The ID FINISH (or terminator), “$”, instructs the scale to interpret subsequent characters as commands. The ID# entry command, “S”, instructs the scale to enter the string identifier into the ID# register.
“c1” is the “mode” character. It describes what the number being transmitted represents.
Immediate and Continuous Print Modes Two types of output modes are available on Setra scales - immediate and continuous print modes. The immediate print mode is enabled by transmitting a "P" over the RS-232 or by pressing print on the keypad when "string format" is selected. In this mode, the contents of the display are transmitted. The print command may follow another command or series of commands. For example, if ".TP" was transmitted; or the sequence, .
The Jump Function The jump function causes the scale to immediately operate in a given weight unit. Using this function assures that numbers, such as tare weight or average piece weight, entered through the RS-232 interface are interpreted in the correct units. For example, if the average piece weight was stored by a computer in grams, it would be necessary to ensure that the scale was operating in grams prior to sending the APW to the scale. This feature is only available through the RS-232 interface.
Status After Power is Applied All Setra scales have an internal nonvolatile memory for storing certain status information. This memory is not erased when the scale is powered down. All setup functions (such as print format, minimum pieces, minimum accuracy, baud rate, and tone enable/ disable) and user conversion factors are stored in this memory. As a result, the baud rate and print format will not need to be reset each time the scale is powered on.
Note: The "handshake" signals, such as "busy", are not implemented. This requires that the peripheral have a minimal buffer (15 characters). Some computers requiring handshaking will need a connection between two pins on the computer’s connector named DTR and DSR (Data Terminal Ready and Data Set Ready). CTS may also need to be jumpered to RTS at your computer interface (Clear To Send and Request To Send).
Appendix VII Accessories and Options The following accessories are available for Setra counting scales. Ask your dealer for current price information and/or a demonstration. Part Number Description 401150 SETRA 240P PRINTER - 40 column dot matrix tape printer comes preinterfaced to Setra scales. Printer has a flexible RS-232 serial asynchronous interface with 1.5 kilobyte data buffer. Printing is bidirectional at 2 lines per second, and baud rate is selectable.
Appendix VIII In Case of Difficulty Setra scales are designed to be easy to use. If, however, you have reached a state in which the scale will no longer follow your instructions, you may wish to “reset” the scale. It is possible to do so by following this sequence. 1. Remove all weight from the pan. 2. Press the — and clear keys to clear the display and set all registers to zero. 3. Press the zero key. This sets the displayed reading to zero.
Appendix IX Specifications MODEL 500C 2000C 5000C 12000C Capacity 500 grams 1.1 lbs. 2000 grams 4.4 lbs. 5000 grams 11 lbs. 12,500 grams 27.6 lbs Precision + 0.0005 grams + 0.005 grams + 0.015 grams + 0.05 grams Readability 0.001 grams 0.01 grams 0.01 grams 0.1 grams Counting Resolution 1 part in 1 million 1 part in 1 million 1 part in 750,000 1 part in 750,000 Counting Accuracy Selectable from 90% to 99.99% Selectable from 90% to 99.99% Selectable from 90% to 99.
Appendix X Limited T wo-Year Scale Warrant y Setra Systems, Inc. warrants the scales it manufactures to be free from defects in material and workmanship. Upon return, transportation charges prepaid, to Setra’s factory within two (2) years of the date of purchase, Setra will repair or replace, at its option, any scale which it determines to contain defective material or workmanship and will return said scale to purchaser, transportation prepaid, at any point in the United States.
Index .
Register 6, 7, 8, 9, 10, 11, 12, 15, 17, 24, 33, 35, 36, 37, 38, 39, 43 Remote Scale Option 20 RS-232 34, 38, 39, 40, 41, 42, 43, 44 sample 14 Sampling 20, 43 Self diagnostic 8 Setup/cal 6, 35 Specifications 44 Storing information 36 String format 37, 38 T units 7, 9, 22, 23, 37 Tare 6, 7, 8, 10, 11, 12, 31, 33, 35, 37 Tone 28, 40, 43 UnAbLE 5, 8, 43 UPdAtE 14 update 14 Verify function 39 Warranty 45 X units 22 Zero 5, 6, 10, 11, 14, 21, 31, 35, 43 47