Avery Weigh-Tronix 3275 User Manual
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Avery Weigh-Tronix 3275 User Manual

Checkweigher
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Model 3275 Checkweigher
User's Manual

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Summary of Contents for Avery Weigh-Tronix 3275

  • Page 1 Model 3275 Checkweigher User’s Manual...

  • Page 2: Model 3275 Checkweigher User's Manual

    Risk of electrical shock. Do not remove cover. No user service- able parts inside. Refer servicing to qualified service personnel. Weigh-Tronix reserves the right to change specifications at any time. 12/13/04 3275_U.P65 PN 7424-12343N e1 Printed in USA Model 3275 Checkweigher User’s Manual...

  • Page 3: Table Of Contents

    AC Electrical Requirements ..................5 Transmitting Serial Data ..................... 5 Operation with a Computer ..................6 Display Features ......................7 3275 Control Keys ......................7 Scale Operation Applying Power to the Scale ..................8 Entering or Changing a Target Weight Using Product ..........8 Setting or Changing a Target Weight by Entering a Numerical Value ......

  • Page 4: Specifications

    3200 oz x 1 90 kg x .02 4000/3200/4500d 200 lb x .1 3200 oz x 2 90 kg x .05 2000/1600/1800d *WEIGH-TRONIX reserves the right to change specifications and features without notice and without incurring obligation. Model 3275 Checkweigher User’s Manual...

  • Page 5: Introduction

    Introduction The Model 3275 Checkweigher is a reliable, easy to operate, high speed weighing scale, designed to allow entry of a target weight, along with se- lected over and under weight limits for the rapid processing of items that must be checked for conformity to a precise weight range. It may be used in stand-alone or interfaced applications.

  • Page 6: Operation With A Computer

    2. Displayed weight with status identification and weight deviation from target weight. Operation with a Up to 32 Model 3275 checkweighers can be connected through their respec- tive RS-485 I/O ports to an IBM PC/AT * or compatible computer which may ®...

  • Page 7: Display Features

    Used to select unit of measure for the weight displayed. TARE Enters a pushbutton tare value, and used to enter a numerical tare value. GROSS Displays gross weight when the scale is in net mode. Model 3275 Checkweigher User’s Manual...

  • Page 8: Scale Operation

    Scale Operation Applying Power The 3275 has no on/off switch as it is best to have power supplied continu- ously. Simply plug the cord from the indicator into the nearest AC source. to the Scale When power is initially applied the following sequence occurs: the entire display will briefly light up;...

  • Page 9: Entering Or Changing A Pushbutton Tare Value

    2 graduations per second, then begins increasing speed. If the key is released and pressed again, the rate of change returns to 2 graduations per second. Model 3275 Checkweigher User’s Manual...

  • Page 10: Entering Or Changing An Over Tolerance

    1. Press the SETUP key. The display shows “SEtuP”. 2. Press the UNDER key. The under annunciator flashes and the display shows the existing under tolerance value. Model 3275 Checkweigher User’s Manual...

  • Page 11: Reviewing An Entered Tare, Over, Under Or Target Value

    The display shows “SEtuP”. 3. Press the SETUP key again. The display shows “CLEAr?. 4. Press the ACCEPT key. All items are cleared and the scale momentarily displays “buSY” then “SAVEd” before returning to normal operation. Model 3275 Checkweigher User’s Manual...

  • Page 12: Viewing And/Or Resetting The Transaction Counter

    The 3275 has a transaction counter which records the number of weigh- Viewing and/or ments or transactions performed by your 3275. A transaction occurs only Resetting the when a target weight is active. Refer to the service manual for setting a Transaction Counter threshold level for the target weight.

  • Page 13: Remote Keypad (Option)

    Used to enter the displayed weight as the UNDER toler- ance. UNDR ALARM Used to enter the weight at which the UNDER display begins to flash. Used to clear an entry on the display. Figure 2 Optional handheld remote keypad Model 3275 Checkweigher User’s Manual...

  • Page 14: Entering Or Changing Over, Under, Accept, Tare Or Over And Under Alarm Values Using The Optional Remote Keypad

    1/20th of the Keypad programmed alarm value or one display count whichever is greater. 1. Press SETUP on the Model 3275. (If the SETUP key has been disabled in the configuration of the scale, input from the remote keypad must...

  • Page 15: Clearing Over, Under, Accept, Tare, Over Alarm And Under Alarm Values Simultaneously Using The Remote Keypad

    Performing this routine will simultaneously clear all values entered. Clearing Over, Under, Accept, Tare, Over 1. Press SETUP on the Model 3275. (If the SETUP key has Alarm and Under Alarm been disabled in the Values Simultaneously configuration of the scale, input...

  • Page 16: Rs-232/Rs-485 Optional Communications

    W (CR) Send Weight And (LF)XXX.XLB(CR) Scale Status Data (LF)hh(STATUS)(ETX) S(CR) Send Scale Status (LF)hh(STATUS)(CR) In Two ASCII Digits Z(CR) Zeros Scale All Else Unknown (LF)?(CR) (CR) = ASCII carriage return (LF) = ASCII line feed Model 3275 Checkweigher User’s Manual...
  • Page 17 For this option refer to the PC to 3275 RS-485 Communication Program. RS-232 With Ability to Download Target Values RS-485 RS-485 option requires appropriate software and hardware in a dedicated IBM PC/AT ® See the output formats and definitions under the RS-232 section on the Further information on protocol previous page.

  • Page 18: Software Options

    Software Options The 3275 Checkweigher can be modified with optional software. If you do not have any of these options installed on your 3275 you may disregard the last portion of this manual. If you have one of these software options, follow the directions for your particular option.

  • Page 19: Multiple Setup With Manual Recall Program

    •Over tolerance remote keypad. . . The display shows “Alt.”. •Under tolerance •Tare 3. Press the decimal (.) on the •Over tolerance alarm remote keypad. . . The display shows “SAV _ _”. •Under tolerance alarm Model 3275 Checkweigher User’s Manual...
  • Page 20 3. Enter the channel number desired. . . The display shows “rEC xx” (xx = 1-99) 4. Press ACPT on the remote keypad. . . The display will return to normal operation with the pre-programmed parameters installed. Model 3275 Checkweigher User’s Manual...

  • Page 21: Standard Deviation Program

    The Standard Deviation statistics option allows the 3275 checkweigher to Standard Deviation operate as a standard checkweigher that provides a statistical summary of Program your process. In addition, it allows the operator to select the number of samples to be weighed, prints out each weighment, or stores the weight data and prints out the statistical analysis after the last sample weighment.
  • Page 22 4. Set sample size to “0”. 5. Press ACCEPT key. The 3275 saves the set information. 6. Turn printer or computer ON. 7. Begin sample weighing. . . Printer will print each weighment as it is made.

  • Page 23: X-Bar R Program

    The parameters you set are • target weight • tolerance limit • sample size • type of printout (A or B, shown above) The following flowchart and instruction steps will guide you through the process of setting these parameters. Model 3275 Checkweigher User’s Manual...

  • Page 24: Setup Mode Menu

    Upon power up, the scale will be in checkweighing mode. Figure 3 shows how to move between the three modes of operation. Figure 3 Moving among the 3275 operational modes 1. From Checkweighing Mode press SETUP to access Setup Mode. . .
  • Page 25 • average weight of samples (X-Bar) • range (R) of weight deviation • trend message, if a trend is de- tected Selecting AUG, which means average, causes the above fields to print, minus the individual weights. See Figure 5. Model 3275 Checkweigher User’s Manual...
  • Page 26 CLEAr? is displayed, the queue is cleared and RESET QUEUE is automatically printed. 15. Press ZERO to exit Setup Mode. . . Scale weight is displayed. Annuncia- tor display varies depending on parameter values set. Scale is in Checkweighing Mode. Model 3275 Checkweigher User’s Manual...
  • Page 27 Pt 1 and is ready for the next sample run. 5. Press ACCEPT if trend message is displayed. . . Message is cleared, Pt 1 is dis- played, and you can start new sample run. Model 3275 Checkweigher User’s Manual...
  • Page 28 3. Place sample on scale. . . OVER, UNDER or ACCEPT illumi- nates and weight of sample is displayed. 4. Repeat step 3 for all samples. . . Appropriate information is displayed. No printout occurs in checkweighing mode. Model 3275 Checkweigher User’s Manual...

  • Page 29: Lb-Oz Program

    In the 10 lb capacity, if weight exceeds 9 lb 15.95 oz the display will roll over to 0 lb 0.00 oz. If the 3275 is in deviation display mode and weight is going in the negative direction, the minus sign (-) will disappear when there is no more room on the display.

  • Page 30: Percent Program

    The percent program software graphically shows you when a specified Percent Program percentage of weight has been added to an initial base weight on the 3275. During operation the center ACCEPT segment lights when the target percentage is reached. Target percentage is the base weight (100%) plus the specified percentage.
  • Page 31 109.0% and 111.0% of the base weight. You can use the remote keypad to enter these tolerances. (Refer to the 3275 User’s Manual for remote keypad instructions.) With no units highlighted on the display: 1.

  • Page 32: Setpoint Option

    Setpoint Option There is an optional RS-232 board and software package for the use of setpoints for various functions. If your 3275 is equipped with this option see the Service Manual for specific instructions on your setup or talk to your local Weigh-Tronix representative.

  • Page 33: Plastic Knob Installation For Usda Approved Applications

    • Removing the two 10-32 hexhead screws accompanying the unit. • Replace with knobs. • Use supplied Belleville washers between knob and mounting surface. • Install the washer with the major diameter bearing against mounting surface. Figure 6 Plastic knob installation Model 3275 Checkweigher User’s Manual...
  • Page 34 This page left intentionally blank. Model 3275 Checkweigher User’s Manual...
  • Page 35 This declaration becomes valid when the SMA Conformance Logo, having our name or trademark is applied to the device or its accompanying documentation. * SMA PRODUCTION MEETS TYPE DEVICE MANUFACTURER Conformance Logo and Design are a registered trademark of the Scale Manufacturers Association Model 3275 Checkweigher User’s Manual...
  • Page 36 Smethwick, West Midlands England B66 2LP Tel: +44 870 90 34343 Fax: +44 121 224 8183 Email: info@awtxglobal.com Web site:www.averyweigh- tronix.com Avery Weigh-Tronix Canada, ULC 217 Brunswick Boulevard Pointe Claire, QC H9R 4R7 Canada Telephone: 514-695-0380 Toll free: 800-561-9461 Facsimile: 514-695-6820 www.weigh-tronix.ca Weigh Bar is a registered trademark of Weigh-Tronix Inc.

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