PC-905 Counting Scale PC-905 User Instructions ENGLISH 43002-0016 Issue AB June 2008
© Avery Weigh-Tronix LLC, 2006. All rights reserved. The information contained herin is the property of Avery Weigh-Tronix LLC and is supplied without liability for errors or omissions. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and foregoing restriction on reproduction extend to all media in which the information may be embodied.
Contents page Contents ......................................................................................................................... 3 Introduction..................................................................................................................... 5 Keyboard and Display .................................................................................................... 6 Scale Setup and Operation ...................................................................................
PC-905 Counting Scale User Instructions
1 Introduction 1.1 Contents This manual tells you how to operate the PC-905 high precision counting scale. You can configure your scale for different options and sampling methods. See the PC-905 Service Manual for details on configuration and calibration. This scale also has an RS-232 I/O channel for communication with appropriate remote devices.
Keyboard and Display 2 Keyboard and Display Figure 2.1 shows the front panel of the PC-905. This is made up of the keyboard and display. Figure 2.1 PC-905 Front Panel The numeric keypad on the right side of the front panel has two function keys: If you press the RCL/. key followed by a numeric key, the PC-905 treats the first key press as a decimal and not a recall request. • CLEAR Lets you clear the displayed number, tare, or piece weight. Press to clear the last display digit during digit entry.
There are three keys to the right of the display: • SAMPLE Used to select a sample size and to initiate the calculation of sample piece weight. This key also functions as an ON/STANDBY key for battery powered scales. Press the key to start the scale. Press and hold this key for five seconds to put the scale in standby mode. The display will show SLEEP. As long as AC is connected to the scale it will power up where it left off unless the scale is SEALED.
Scale Setup and Operation 3 Scale Setup and Operation This section of the manual covers getting your scale ready to work and operating the scale. This section is divided into the following: 3.1 • 3.1 - Unpacking the Scale (page 8) • 3.2 - Installing the Scale (page 8) • 3.3 - Battery Power Option (page 9) • 3.4 - Operation as a Scale (page 10) • 3.5 - Operation as a Counting Scale (page 11) • 3.6 - Counting Using a Known Piece Weight (page 12) • 3.
3.3 Battery Power Option 3.3 Battery Power Option The PC-905 has an internal and an external battery option. The battery can be recharged in place by connecting the transformer to a power source and to the scale. The battery will recharge while the scale is being powered by the transformer. See the Battery Information table below for information on charge times, etc. The battery circuits are designed with overcharge protection. Press the SAMPLE key on the front panel to turn the scale on.
Scale Setup and Operation 3.4 Operation as a Scale The PC-905 can be used as a bench scale or as a counting scale. The annunciators indicate when you are in the weigh mode or count mode and when the unit is configured for pounds, kilograms, grams, or ounces. While in weight mode, press the UNITS key to change the unit of measure.
3.5 Operation as a Counting Scale 3.5 Operation as a Counting Scale Counting consists of two major steps; entering a piece weight and adding the items to be counted. You enter the piece weight in one of these ways: • key in a known piece weight • bulk sampling or dribble sampling (bulk is the default method) • reverse sampling, method 1 or method 2 (method 1 is default). This can be used if either bulk or dribble is enabled.
Scale Setup and Operation 3.6 Counting Using a Known Piece Weight Sampling is just one way to get a piece weight and to count items. You can also key in a known piece weight on the numeric keypad and press the PIECE WEIGHT key. This enters the piece weight and calculates counts based on that weight. With the scale powered and showing 0 weight, follow these example steps for a part weighing .02478 pounds: If you press the RCL/.
3.7 Counting Using Bulk Sampling 3.7 Counting Using Bulk Sampling Bulk sampling is an automated sampling method. You place all the items to be sampled on the scale at the same time and the scale will automatically calculate the piece weight and display the count, without any further action. Follow these steps for bulk sampling. If you have a container, place it on the scale and press the TARE key to tare the container or key in a known tare weight and press the TARE key.
Scale Setup and Operation 3.8 Counting Using Dribble Sampling Dribble sampling requires one more step than bulk sampling You can count the items to be sampled onto the scale and then press the SAMPLE key to begin the piece weight calculation. This can be handy if the items are more easily counted onto the scale one at a time versus all at once. Follow these steps for dribble sampling.
3.9 Using Reverse Sampling for Counting, Method 1 3.9 Using Reverse Sampling for Counting, Method 1 Method 1 or 2 are chosen in the Service Menu. See the Service Manual for instructions. Reverse sampling occurs when you place an unknown number of items on the scale, determine a piece weight (by method 1 or 2), and the scale counts items as they are removed from the scale. Method 1 and 2 are slightly different. Method 1 results in negative counts as parts are removed.
Scale Setup and Operation 3.10 Using Reverse Sampling for Counting, Method 2 Method 1 or 2 are chosen in the Service Menu. See the Service Manual for instructions. Reverse sampling, method 2, is independent of the bulk or dribble modes. It does not matter which of those you have enabled. Reverse sampling occurs when you place an unknown number of items on the scale, determine a piece weight (by method 1 or 2), and the scale counts items as they are removed from the scale.
3.11 Recalling a Piece Weight 3.11 Recalling a Piece Weight The PC-905 lets you view the active piece weight by using the RCL/. key. The active piece weight is one you have keyed in or one that has resulted from doing a sample. This is useful if you want to record a piece weight for a part. The next time you want to count that part you can key in the recorded piece weight. 1. With the COUNT or WEIGHT annunciator lit, press the RCL/. key. . . rCL is displayed. This stands for recall. 2.
Scale Setup and Operation 3.16 Using the BASE Key Press the BASE key to switch between using the local scale and a remote scale base. This assumes you have a remote base option installed. If Automatic Base Switching is enabled (see the Service Manual for instructions on enabling this function), use the local base for all sampling and when the sampling is done, the remote base becomes the active scale automatically.
Serial Communications 4 This section covers the serial communications capabilities of the PC-905. In this section you will find: Default serial settings are: 9600 Baud, 8 databits, No parity, and 1 stop bit 4.1 • 4.1 - Cable Pinouts (page 19) • 4.
Serial Communications The functional pinout is as follows: DB-9F Scale Serial I/O Connector Pin Signal Description 1 Reserved 2 TXD 3 RXD 4 Reserved 5 SIG GND 6 Reserved 7 Reserved 8 Reserved 9 +5V The scale has a remote base option. If this is installed, the connector will show up in the position shown in Figure 4.1. If the remote base is analog the connector will be a DB-9 male. If the remote base is digital (QDT), the connector will be DB-9 female.
4.2 Preset Print Formats 4.2 Preset Print Formats Imp Printer Formats 8 Formats are available with the Imp printer selected. LEGEND: CR = carriage return LF = line feed SP = space U = units character W = net weight character C = count character T = Tare character G = gross weight character P = piece weight character I = weight type identifier ‘G’, ‘T’, ‘N’ (gross, tare or net) 1. Ft 1 = Net weight onlyWWWW.WW 2. Ft 2 = Net weight with unitsWWWW.WWUU 3.
Serial Communications 4. Ft 4 = Displayed count or weight with identifierIn COUNT MODE, CCCCCCCPCS In WEIGH MODE, IWWWW.WW 5. Ft 5 = Displayed weight with identifier and unitsIn COUNT MODE, CCCCCCCPCS In WEIGH MODE, IWWWW.WWUU 6. Ft 6 = Net weight with units, count and piece weightNet Count = WWWW.WWUU(Net = or Gross = ) = CCCCCCC Piece Wt = PPPPPPUU 7.
4.2 Preset Print Formats 8.
Serial Communications Dymo Label Writer Setra 300 Formats 24 PC-905 Counting Scale User Instructions
4.2 Preset Print Formats Zebra 2844 Printer Formats Time and date will appear only if the printer has this option installed.
Serial Communications PC Protocol The scale's RS-232 bidirectional communication works in a master/slave protocol. A computer or master sends a command code to the scale (slave) which will return a response to the master device or perform a scale function. Commands to the scale are in uppercase, terminated with a carriage return. Scale responses begin with the lowercase equivalent of the command code.
4.
Serial Communications NCI Protocol Key to symbols used: Start of Text End of Text character Line Feed character Carriage Return character Space X Weight characters from display including minus sign and outof-range characters HML... Three status bytes uu Units of measure (lb, kg, oz, g, etc. using ANSI standard abbreviations). Command Possible Scale Response Notes* Descriptions W XXXXX.XXuu[HML] XXXXX.
4.2 Preset Print Formats The NCI protocol may have three status bytes.
Serial Communications Broadcast Protocol Broadcast protocol will support the use of the RD-4100, RD-6100 and Evolution series indicators as remote displays.
5 Error Messages The error messages you might see on the display are shown below. Error message no CAL Scale has not yet been calibrated Lo bAt Low Battery voltage SPL Err - Abort PC-905 Counting Scale User Instructions Error condition Sampling error, aborting process. Use next available sample size.
Specifications 6 Specifications Capacity (lb) Available Countby Values 5,000d NTEP (Default) 25,000d 50,000d 100,000d 10 .002 .001 .0005 .0002 .0001 25 .005 .002 .001 .0005 .0002 50 .01 .005 .002 .001 .0005 100 .02 .01 .005 .002 .001 Capacity (kg) Available Countby Values 5,000d NTEP (Default) 25,000d 50,000d 100,000d 5 .001 .0005 .0002 .0001 .00005 12 .002 .001 .0005 .0002 .0001 25 .005 .002 .001 .0005 .0002 50 .01 .005 .002 .001 .
Internal Resolution: 1:2,000,000 Dimensions: Weighing Platform: 12.6” X 14.08”, 25, 50 & 100 lb capacity 8” diameter, 10 lb capacity Display Assembly: 6.31” x 12.86” Overall Dimensions: 17.50” x 14.08” x 4.25-5.40” Construction: Diecast aluminum base and load bridge, Stainless Steel Weight Platter, ABS plastic display assembly Display: Large 0.5” H 7-digit / 7-segment Backlit LCD display. Response Time (typical) The dynamic response of the scale is adjustable through the filtering selection.
Specifications 34 PC-905 Counting Scale User Instructions
Avery Weigh-Tronix USA 1000 Armstrong Dr. Fairmont MN 56031 USA Tel: 507-238-4461 Fax: 507-238-4195 Email: industrial@weigh-tronix.com www.wtxweb.com Avery Weigh-Tronix UK Foundry Lane, Smethwick, West Midlands, England B66 2LP Tel: +44 (0)870 903 4343 Fax: +44 (0)121 224 8183 Email: info@awtxglobal.com www.averyweigh-tronix.
