Avery Weigh-Tronix PC-820 Service Manual
  1. Manuals
  2. Brands
  3. Avery Weigh-Tronix Manuals
  4. Scales
  5. PC-820
  6. Service manual

Avery Weigh-Tronix PC-820 Service Manual

Hide thumbs Also See for PC-820:
Table of Contents

Advertisement

Quick Links

PC-820/821 Parts Counter
Service Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the PC-820 and is the answer not in the manual?

Questions and answers

Related Manuals for Avery Weigh-Tronix PC-820

Summary of Contents for Avery Weigh-Tronix PC-820

  • Page 1 PC-820/821 Parts Counter Service Manual...
  • Page 2 PC-820/821 Parts Counter Service Manual...

  • Page 3: Table Of Contents

    Calibration Error Messages ..............21 Serial Communication ....................22 Scale Status Byte Definition ................24 Appendix A: Available PC-820 Displays ..............25 Appendix B: Tips on Using Harmonizer ..............27 Technical Drawings and Parts Lists ..............29-46 10 lb / 5 kg 12" x 14" Parts and Assembly ............29 Draft Shield Parts and Assembly ................

  • Page 4: Specifications

    Zero, Low Battery, Unit of Measure and Display Label Display 240 x 64 dot matrix LCD display 5" x 1.33" displayable area PC-820: Cold cathode fluorescent backlit (white on blue) PC-821: LCD without backlight Display rate Selectable update rate: 0.5, 1, 2, or 5 times per second...

  • Page 5: Introduction

    SimPoser. PC-820 Description The PC-820 is a 12” x 14” scale with an attached 5” x 12” display housing. To increase the contrast of the ® See Figure 1. The scale base is cast aluminum enclosing a Quartzell display, press and hold the weight sensor and electronics package.

  • Page 6: Front Panel Keys

    The keys on the front panel of the PC-820 are of two types; hard keys and Front Panel Keys softkeys. Hard keys are labeled directly and softkey labels appear on the display. Softkeys function differently at different times and their labels change as needed.

  • Page 7: Entering The Menu

    See Figure 4 and the Setup Menu section below for more infor- mation. Press this softkey to turn the PC-820 off. Pressing any key will turn the scale on. The Test menu, shown in Figure 3, lets you test your scale operation.
  • Page 8 Inputs Softkey Inputs The same as Outputs except you are activating an input set- point device such as a switch or contact closure remotely and monitoring it with this menu. PC-820/821 Parts Counter Service Manual...

  • Page 9: Setup Menus

    4 = Max 5 = ROC 6 = Gross total 7 = Net total 8 = Count total 9 = Transaction total 10 = Count 11 = Variable 12 = Piece weight 13 = ADC PC-820/821 Parts Counter Service Manual...
  • Page 10 Figure 4a Setup Menus PC-820/821 Parts Counter Service Manual...
  • Page 11 Press Select: The following softkeys are displayed: Display You are prompted to enter a display mode number (1-20). See Appendix A: Available PC-820 Displays. Base You are asked to pick the active scale base. Only active bases are offered as choices.

  • Page 12: Configuration Menu (Password Is 2045)

    The first softkey under Scale is # Bases. Press this and you are prompted to key in the number of remote bases (0-2) attached to the PC-820. Remote 1 is Quartzell by default. You can set Remote 1 to work with an analog base.
  • Page 13 • Latch = Count filter and sample latching mode: Count filter: You can choose a count filter of OFF, Fast or Slow. (Default is Fast). The count filter, which can also be called count latching, PC-820/821 Parts Counter Service Manual...
  • Page 14 If the All these keys can be enabled by the firmware in the PC-820, but the BASIC application in the PC-820 will need additional code for these keys to func- remote base softkey is en- tion.
  • Page 15 Y/M/D = Year/Month/Day Default is M/D/Y. Print Fm Softkey Press the Print Fm softkey to configure the port to use for each print format. First you choose the default print format. Choices are from 0-32. Default is PC-820/821 Parts Counter Service Manual...
  • Page 16 The indicator will repeat removing ½ the weight every X seconds. X being the number of seconds you have picked. Default is 0.5 division and 1 second. Set division size to zero to disable AZT. PC-820/821 Parts Counter Service Manual...
  • Page 17 The PC-820 samples the Quartzell at 50 times per second (60 times per second for external Quartzells and analog bases). If ROC Samples is set to 50, the PC-820 is determining the rate of weight change over one full second.
  • Page 18 • Tare timeout • Sample timeout Timeout is the amount of time the PC-820 will wait for motion to cease and perform the function after the key is pressed. For example, if Zero Timeout is set to 3 seconds, when the ZERO key is pressed the unit will zero the scale if there is no motion.
  • Page 19 YES the unit defaults to an interval size of one half of capacity. You can key in any interval size you want. After entering the interval size you are prompted to enter the division size for the interval. Key this in and press ENTER. PC-820/821 Parts Counter Service Manual...

  • Page 20: Calibration Menu (Password Is 30456)

    2. Press the SETUP softkey. . . Scale prompts for a password. 3. Key in 30456 and press ENTER. . . You are then given the choice of Local, Remote 1 or Remote 2. PC-820/821 Parts Counter Service Manual...

  • Page 21: Configuration Of Remote 1 For Analog Scale Base

    QDT base. Verify correct cable connections, then setup the capacity and division size in the calibration menu. This forces the PC-820 to scan the QDT cell for its serial number and that may be viewed in the Test menu.

  • Page 22: Serial Communication

    No conn. No connection. Table 1 Port 1 (Com 1) pin outs Com 2 is a 15 pin DE type connector at the rear of the PC-820. The func- tional pin out is as follows: PIN NO. SIGNAL NAME DEVICE USED WITH...
  • Page 23 <CR> ASCII carriage return character hours minutes represents the three bytes of scale status AM or PM information as described on the next day of week page. day of month year Table 3 Computer commands and responses PC-820/821 Parts Counter Service Manual...

  • Page 24: Scale Status Byte Definition

    Scale Status Byte Definitions PC-820/821 Parts Counter Service Manual...

  • Page 25: Appendix A: Available Pc-820 Displays

    Appendix A: Available PC-820 Displays Mode 6 Mode 1 Mode 7 Mode 2 Mode 8 Mode 3 Mode 9 Mode 4 Mode 10 Mode 5 PC-820/821 Parts Counter Service Manual...
  • Page 26 Mode 11 Mode 16 Mode 12 Mode 17 Mode 13 Mode 18 Mode 14 Mode 19 Mode 15 Mode 20 PC-820/821 Parts Counter Service Manual...

  • Page 27: Appendix B: Tips On Using Harmonizer

    If the Threshld value is too high your scale will react slowly to weight changes. When Harmonizer is properly adjusted the scale will be stable at zero and will rapidly display a stable test weight value. PC-820/821 Parts Counter Service Manual...
  • Page 28 PC-820/821 Parts Counter Service Manual...

  • Page 29: Technical Drawings And Parts Lists

    Display Enclosure, Top 1069-15966 Display Enclosure, Bottom 1069-15967 Keypad / Backer Plate Assy 51938-0018 Display / Keypad Interface.Pc Board Assy (PC-820) 50912-0028 Display / Keypad Interface.Pc Board Assy (PC-821) 50912-0010 Display Assy, LCD w/ Backlite (PC-820) 48622-1021 Display Assy, LCD w/o Backlite (PC-821) 48622-1013 Screw, #6 x ¼”L...

  • Page 30: Draft Shield Parts And Assembly

    PC-820/821 COUNTING SCALE DRAFT SHIELD (optional) (10 lb./ 5 kg 12” x 14” base only) PARTS AND ASSEMBLY ITEM DESCRIPTION W-T P/N SUPPORT POST 1058-15413 SHIELD DOOR 1069-15404 SHIELD TOP PANEL 1069-15403 SHIELD REAR PANEL 1069-15406 SHIELD SIDE PANEL 1069-14604...

  • Page 31: Lb / 25 Kg And 100 Lb / 50 Kg 12" X 14" Parts And Assembly

    Display Enclosure, Top 1069-15966 Display Enclosure, Bottom 1069-15967 Keypad / Backer Plate Assy 51938-0018 Display / Keypad Intfc Board Assy (PC-820) 50912-0028 Display / Keypad Intfc Board Assy (PC-821) 50912-0010 Display, LCD w/ Backlite (PC-820) 48622-1021 Display, LCD w/o Backlite (PC-821) 48622-1013 Screw, #6 x ¼”L...

  • Page 32: System Wiring Block Diagram

    PC-820/821 COUNTING SCALE SYSTEM WIRING BLOCK DIAGRAM NOTE: For remote base wiring information Ref. The “Bench Scale Bases” installation manual (P/N 16783-0017) shipped with your base. PIN NO. ANALOG SIGNAL -SIGNAL COM 2 (J9) +SIGNAL +EXCITATION SIGNAL DEVICE PIN NO.

  • Page 33: Main Computer & I/O, Remote Analog, Internal Battery Charger Pc Boards

    PC-820/821 COUNTING SCALE MAIN COMPUTER & I/O, REMOTE ANALOG, INTERNAL BATTERY CHARGER PC. BOARDS COM 1 (J7) JUMPER CHART JUMPER PINS RS-232 RS-485 1 & 2 ------ 2 & 3 ------ XMIT A 1 & 2 XMIT ------ 2 & 3...

  • Page 34: Display & Interface Bd. Display Assembly, Keypad Assembly And Matrix

    PC-820/821 COUNTING SCALE DISPLAY & INTERFACE BD., DISPLAY ASSY, KEYPAD ASSY And MATRIX...

  • Page 35: Internal Battery & Charger Pc Board Parts And Assembly

    PC-820/821 COUNTING SCALE INTERNAL BATTERY & CHARGER PC. BOARD PARTS ASSY (KIT P/N 51799-0016) PARTS LIST ITEM DESCRIPTION W-T P/N Battery Bracket 51793-0012 Screw,flat hd #6-32 x 3/8"L 16254-0249 Weather Stripping, (4 pieces as shown) 1045-05982 Battery, 6V, 3.2A-H 15553-0082...

  • Page 36: Dimensional Outline For 12" X 14" Base

    PC-820/821 COUNTING SCALE SCALES BASES DIMENSIONAL OUTLINE 12” x 14” BASE...

  • Page 37: Com2 Interface Cable Options And Pin-Outs

    PC-820/821 COUNTING SCALE COM2 INTERFACE CABLE OPTIONS PIN-OUTS...

  • Page 38: Com1 Interface Cables, 820 To Quartzell Base And 820 To Eltron Printer Cable Assemblies

    PC-820/821 COUNTING SCALE COM1 INTERFACE CABLES, 820-TO-QUARTZELL BASE AND 820-TO-ELTRON PRINTER CABLE ASSEMBLIES...

  • Page 39: Bp-25R External Battery

    PC-820/821 COUNTING SCALE BP-25R EXTERNAL BATTERY P/N 46839-0018 ,-0026 (115VAC) (230VAC)

  • Page 40: Zeus Kits, Internal And External

    PC-820/821 COUNTING SCALE ZEUS KITS, INTERNAL AND EXTERNAL ITEM DESCRIPTION W-T P/N Ribbon Cable 52962-0015 Antenna Mtg. Plate 53549-0015 Screw, #4 x 5/16 L 14473-0116 Screw, #6 x 3/8 L 14473-0249 Standoff, m/f #6 15437-5000 ANTENNA: 2”, 2 dbi, (approx. 500 ft. range) 48686-0067 5 1/2”, articulating 90 degree, 3 dbi (approx.800 ft)

  • Page 41: Sscu Parts And Assembly

    PC-820/821 COUNTING SCALE SOLID STATE CONTROL UNIT (SSCU) PARTS ASSEMBLY ITEM DESCRIPTION W-T P/N Strain Relief 22380-0053 Strain Relief 15257-0024 Sscu Interface Cable (9-pin) 47388-0029 Sscu Interface Cable (15-pin) 47388-0037 Enclosure (Steel, Painted) 47665-0031 Enclosure (Stainless) 47665-0049 Remote 16 TTL Control I/O Pc Bd 49853-0013 Remote 8 Solid State Control I/O Pc.

  • Page 42: Sscu-8 Remote Expanded Control I/O Board

    PC-820/821 COUNTING SCALE SSCU-8 REMOTE EXPANDED CONTROL I/O BOARD P/N 47183-0018 Table 3: Setpoints 17 thru 24 Table 1: Setpoints 1 thru 8 (1)ON (2)ON (3)ON (1)ON (2)OFF (3)ON SETP0INT # TB # PIN # SETP0INT # TB # PIN #...

  • Page 43: Sscu External (16) I/O Cutoff Expansion Board

    PC-820/821 COUNTING SCALE SSCU EXTERNAL (16) I/O CUTOFF EXPANSION BOARD P/N 49853-0013 Table 1: Table 2: Setpoints 1 thru 16 Setpoints 17 thru 32 (1)ON (2)ON (1)OFF (2)ON SETP0INT # TB # PIN # SETP0INT # TB # PIN #...

  • Page 44: Remote (Ttl) Keyboard Options

    PC-820/821 COUNTING SCALE REMOTE (TTL) KEYBOARD OPTIONS BAUD RATE / DIPSWITCH SETTINGS FOR STANDKEY (TTL) KEYBOARD BAUD SWITCH SETTINGS RATE 1200 9600 KEYBOARD SPECIFICATIONS Environmental: 32°f to 130°f (0°c to 55°c). Communication Output: 1 start bit, 8 data bits, 1 step bit TTL asynchronous serial, selectable baud rates.

  • Page 45: Opto-22 Control Interface Devices

    OPTO-22 CONTROL INTERFACE DEVICES Specifications The OPTO-22 Generation 4 I/O modules can be used on the optional Remote Expanded Control Interface Boards (max. 32). OPTO-22 I/O Type External circuit External Turn on Turn off I/O operating AC or DC Color voltage range circuit time msec.
  • Page 47 This declaration becomes valid when the SMA Conformance Logo, having our name or trade- mark 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 PC-820/821 Parts Counter Service Manual...
  • Page 48 Avery Weigh-Tronix Avery Weigh-Tronix Canada, ULC 1000 Armstrong Dr. 217 Brunswick Boulevard Fairmont, MN 56031 USA Pointe Claire, QC H9R 4R7 Canada Telephone: 507-238-4461 Telephone: 514-695-0380 Facsimile: 507-238-4195 Toll free: 800-561-9461 e-mail: industrial@weigh-tronix.com Facsimile: 514-695-6820 www.wtxweb.com www.weigh-tronix.ca Weigh Bar ®...

This manual is also suitable for:

Pc-821

Table of Contents

Save PDF