electronic weight indicators model ld5208

LD5208 USER MANUAL, REV. 0: NOVEMBER 2005 1

ELECTRONIC WEIGHT INDICATORS

MODEL LD5208 UUSSEERR MMAANNUUAALL


All rights reserved.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, mechanical, photocopying, recording, or otherwise, without the prior written permission of Leon

Engineering SA.

No patent liability is assumed with respect to the use of the information contained herein. While every

precaution has been taken in the preparation of this book, Leon Engineering SA assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information

contained herein.

The information herein is believed to be both accurate and reliable. LEON ENGINEERING, however, would be

obliged to be informed if any errors occur. LEON ENGINEERING cannot accept any liability for direct or indirect damages resulting from the use of this manual.

LEON ENGINEERING reserves the right to revise this manual and alter its content without notification at any

time.

Neither Leon Engineering SA nor its affiliates shall be liable to the purchaser of this product or third parties

for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or

(excluding the U.S.) failure to strictly comply with Leon Engineering operating and maintenance instructions.

Leon Engineering SA shall not be liable against any damages or problems arising from the use of any options

or any consumable products other than those designated as Original Leon Engineering Products.

.... NOTICE: The contents of this manual are subject to change without notice.

Copyright © 2004 by Leon Engineering SA, Athens, Greece, European Union

.... NOTE

Notes have important information and useful tips on the operation of your equipment.

WARNING

Warnings must be followed carefully to avoid bodily injury.

CAUTION Cautions must be observed to avoid damage to your equipment.


TABLE OF CONTENTS

1. DECLARATION OF CONFORMITY ................................................................................................4

2. STANDARD WARRANTY ..............................................................................................................5

3. MODIFICATIONS.........................................................................................................................6

4. INTRODUCTION ..........................................................................................................................6

5. UNPACKING ................................................................................................................................6

6. INSTALLATION............................................................................................................................7

6.1 MOUNTING LOCATION – ENVIRONMENTAL CONSIDERATIONS ............................................................................ 7

6.2 POWER ................................................................................................................................................................ 7

7. FRONT PANEL SURVEY................................................................................................................8

7.1 WEIGHT DISPLAY ................................................................................................................................................ 8

7.2 STATUS ANNUNCIATORS ..................................................................................................................................... 8

7.3 FRONT PANEL KEYS............................................................................................................................................. 9

7.4 COMMON MESSAGES APPEARING ON THE DISPLAY ............................................................................................ 10

8. FUNCTION MENU ......................................................................................................................11

8.1 ACCESSING THE FUNCTION MENU ..................................................................................................................... 11

8.2 LIST OF FUNCTION PROGRAMS ......................................................................................................................... 11

9. TURNING THE INDICATOR ON..................................................................................................14

10. USING THE INDICATOR ..........................................................................................................15

10.1 ZEROING THE SCALE ......................................................................................................................................... 15

10.2 TARING THE SCALE ........................................................................................................................................... 15

10.2.1 Taring with unknown tare weight ............................................................................................................ 16

10.2.2 Taring with known tare weight ................................................................................................................ 16

10.3 WEIGHING......................................................................................................................................................... 17

10.3.1 Accumulating the weight measurements.................................................................................................. 17

10.4 PIECE COUNTING ............................................................................................................................................... 18

10.4.1 Piece counting by sampling – Function 51.............................................................................................. 18

10.4.2 Piece counting by entering the average piece weight – Function 52 ...................................................... 19

10.4.3 Calculating a series of average piece weights......................................................................................... 19

10.5 PRINTING .......................................................................................................................................................... 19

10.5.1 To print a weigh ticket :........................................................................................................................... 20

10.5.2 To produce a copy of the last weigh ticket : ............................................................................................ 20

10.5.3 To temporarily disable the printer output : ............................................................................................. 20

10.6 SELECTING PRINT FORMAT ................................................................................................................................ 21

10.7 PROGRAMMING THE PIN (PERSONAL IDENTIFICATION NUMBER)...................................................................... 23

11. SERIAL COMMUNICATIONS ....................................................................................................24

11.1 SERIAL PORT – RS232 C ................................................................................................................................. 24

11.1.1 Printer output (SETUP 2, 2.t=01, 03, 04, 05, 06, 07, 08, 10,11) ............................................................ 25

11.1.2 Continuous weight output (SETUP 2, 2.t=02)........................................................................................ 25

11.1.3 Print on demand mode (SETUP 2, 2.t=09) ............................................................................................ 25

12. TROUBLE SHOOTING ..............................................................................................................26

13. SET UP AND CALIBRATION RECORD.......................................................................................27

CALIBRATION DATA ....................................................................................................................................................... 27

SCALE PARAMETERS ...................................................................................................................................................... 27

SET UP 1 – OPERATIONAL PARAMETERS ...................................................................................................................... 27

SETUP 2 - SERIAL PORT............................................................................................................................................... 27

SETUP 4 – ANIMAL WEIGHING ..................................................................................................................................... 27

SETUP 6 – KEYS LOCKED ............................................................................................................................................. 27


1. DECLARATION OF CONFORMITY

LEON ENGINEERING S.A INDUSTRIAL WEIGHING AND PROCESS AUTOMATION TSOKA 8 Str., THESI XIROPIGADO

19600 MANDRA, ATTICA

GREECE

Declaration of Conformity

The Non-Automatic Weighing Instrument

Manufacturer:

LEON ENGINEERING S.A.

Type/Model:

LD5208

No of the EC Type Approval Certificate

DK 0199.27

No of relevant Test Certificates (Where Appropriate)

Corresponds to the production model described in the EC Type-Approval Certificate and to the

requirements of the following Directives:

90/384/EEC, 89/336/EEC as amended by EC Directive 92/31/EEC, 93/68/EEC by application of the

harmonised standards EN-55011 Class A and EN-45501

73/23/EEC as amended by EC Directive 93/68/EEC by application of the harmonised standard EN-60950

Signature:

Dimitrios Ploumakis

Date:

23.12.2005

Being the responsible person employed and appointed by Leon Engineering S.A.

III


2. STANDARD WARRANTY LD52xx Weighing Indicators Series®

Leon Engineering SA warrants that the equipment covered by this warranty will be free from defects in workmanship and materials for a period of 1 (one) year from date of installation or eighteen (18) months

from date of shipment to the buyer, whichever comes first. Should any such defects be found and reported,

Leon Engineering (herein referred to as the "Company"), will, at its option, refund the purchase price or furnish replacements parts. The following are NOT covered under any of these warranties:

1) Initial installation and ongoing scale calibration. 2) Damage to scale components by gross abuse, fire, flooding, explosion, water, voltage surges, or civil

disturbance, or other external events.

3) Normal maintenance or consumable items.

This warranty information covers the all Models of LD5200 SERIES (LD5204, LD5206, LD5208, LD5218, LD5250, DJB, RDT52, DWI)

THE COMPANY EXPRESSLY WARRANTS THE EQUIPMENT MANUFACTURED BY IT AS SET FORTH HEREIN.

THE COMPANY MAKES NO OTHER WARRANTIES EITHER EXPRESSED OR IMPLIED (INCLUDING WITHOUT

LIMITATION WARRANTIES AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE). IN ADDITION, THIS DOCUMENT SHALL CONSTITUTE THE SOLE AND EXCLUSIVE REMEDIES OF THE BUYER

FOR ANY BREACH BY THE COMPANY OF ITS WARRANTIES HEREIN. COMPANY LIABILITY UNDER THIS WARRANTY OR ANOTHER WARRANTY WHETHER EXPRESSED OR

IMPLIED IN LAW OR FACT SHALL BE LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE MATERIAL,

AND IN NO EVENT SHALL IT BE LIABLE FOR CONSEQUENTIAL OR INDIRECT DAMAGES.

APPLICATION GUIDES The only warranty of Leon Engineering is for the product it supplies under the Product Warranty Statement

listed above.

CAUTION READ this manual BEFORE operating or servicing this equipment

FOLLOW these instructions carefully. SAVE this manual for future reference.

DO NOT allow untrained personnel to operate, clean, inspect, maintain, service, or tamper with this equipment.

ALWAYS DISCONNECT this equipment from the power source before cleaning or performing maintenance.

CALL LEON ENGINEERING for parts, information, and service.

WARNING ONLY PERMIT QUALIFIED PERSONNEL TO SERVICE THIS EQUIPMENT.

EXERCISE CARE WHEN MAKING CHECKS, TESTS AND ADJUSTMENTS THAT MUST BE

MADE WITH POWER ON. FAILING TO OBSERVE THESE PRECAUTIONS CAN RESULT IN BODILY HARM.

WARNING FOR CONTINUED PROTECTION AGAINST SHOCK HAZARD CONNECT TO

PROPERLY GROUNDED OUTLET ONLY. DO NOT REMOVE THE GROUND PRONG.

WARNING DISCONNECT ALL POWER TO THIS UNIT BEFORE REMOVING THE FUSE

OR SERVICING.

WARNING BEFORE CONNECTING/DISCONNECTING ANY INTERNAL ELECTRONIC COMPONENTS OR INTERCONNECTING WIRING BETWEEN ELECTRONIC EQUIPMENT

ALWAYS REMOVE POWER AND WAIT AT LEAST THIRTY (30) SECONDS BEFORE ANY

CONNECTIONS OR DISCONNECTIONS ARE MADE. FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN DAMAGE TO OR DESTRUCTION OF THE EQUIPMENT OR BODILY HARM.

CAUTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE

DEVICES.


3. MODIFICATIONS

Initial version.

4. INTRODUCTION The electronic weight indicator model LD5208 is a compact micro-controller based unit specifically designed for use on systems utilising strain gauge load cells. The standard configuration includes: 1. High accuracy analog to digital converter (max 550.000 internal counts). 2. Front panel with 7 membrane keys with tactile feedback. 3. 6 digits, 7 segments, LCD display black (24 mm) plus annunciators. 4. Non volatile memory for system parameters and calibration data. 5. Serial port RS232C (COM1) for printing weighing data on a serial printer or host computer. 6. The microcontroller technology allows the instrument to perform in software all measuring

functions, operator input-output, automatic controls and sequences necessary for the operation of weighing systems.

7. The setting of the unit is done through a guided keyboard operation, enabling the adaptation to operating environment and system requirements.

8. A totaliser and counter is available that may be viewed or printed. 9. Several print formats are available selectable in setup. 10. A piece count facility, with selectable sample size, is available in the standard software. 11. Animal weighing with selectable number of samples is also included in the standard

software.

5. UNPACKING Prior to unpacking the equipment, examine the carton for exterior shipping damage and if any notify the carrier immediately. Remove the equipment from the carton and plastic bag. Inspect extent of supply for any sign of damage. Save packaging material. Verify that your indicator has been shipped with the following items : � Indicator LD5208 in plastic enclosure � 230VAC to 9VDC/800mA, mains power adapter. � User manual. � An accessory kit including the connection plugs for the load cell and the serial port.


6. INSTALLATION

6.1 Mounting location – Environmental considerations The mounting location must be such that the instrument is not subject to excessive vibrations, heat or humidity. Avoid direct sunlight on the front of the instrument. The unit has to be installed at the right height to allow an easy reading of the display and convenient keyboard operation. AMBIENT : Storage - 10 to +70 0C. TEMPERATURE Operating -10 to +40 0C. HUMIDITY : 40 to 90% RH (non condensing). VIBRATION : Severe vibration can affect the accuracy of weighing and damage electric / electronic components. AIR : The surrounding air should be dust free and not contain any corrosive

gasses or materials which could adversely affect the equipment. PROTECTION : IP40. ELECTROMAGNETIC : Heavy electrical equipment should not be installed close to FIELDS the weighing equipment. INCOMING AND : Relays and contactors connected to the equipment must have OUTGOING SIGNALS reliable and effective interference suppression. This also applies to other

equipment located within a distance of 3m from out equipment. Cabling must be performed according to normal practice.

NOTES : - WELDING on or in the vicinity of the equipment is strictly prohibited. - STATIC loads, caused by thunderstorms, have to be prevented from

developing by use of reliable lightning conductors. - ENSURE that the cooling of the equipment is not obstructed.

6.2 Power The instrument is powered from external power adaptor (9VDC/800mA) or internal battery. Battery charging is performed while the external power supply is connected. As the instrument is computer controlled it requires clean power for reliable operation. Power supplied should come from a source that is isolated from other process equipment.

WARNING

� Verify that the AC POWER SOCKET outlet is properly protected. � To avoid shock hazards, always be certain that the power adaptor is disconnected from the

wall outlet BEFORE opening the enclosure. � DO NOT USE any other type of power adaptor than the one supplied with the indicator. � DO NOT create a safety hazard by defeating the grounding feature.


7. FRONT PANEL SURVEY

7.1 Weight display

The indicator LD5208 has a 6-digit display for the indication of: � measured weight (gross or net) � error messages � other messages indicating the status of the scale � user guidance for the settings of the scale and the selection of operations � technician guidance for the configuration and calibration procedures and checking purposes

7.2 Status annunciators At the left and right side of the digits small messages, called STATUS ANNUNCIATORS, appear in order to provide status information during the weighing process.

O It is illuminated when the scale is stable.

ZERO It is illuminated when the scale weight is stable and within 1/4 division of actual zero. TARE It indicates that a tare value is being displayed. NET It is illuminated when the scale has been tared and the display is in NET mode. pcs It is illuminated when pieces are displayed.

b It lights up steady when the battery charge is being displayed. It flashes when the battery

charge is below 20% of the scale capacity.

ob Battery charge indicator (under the display). Red colour: charging. Green colour: charging completed.


7.3 Front panel keys

! POWER ON-OFF KEY

-By pressing momentarily the unit turns on and initiates power on self-test. -By pressing again momentarily the unit turns off.

) ZERO / CLEAR ERROR/ESCAPE KEY

-It is used to reset the weight display to zero. Zeroing will be effective only if the scale is stable, in gross mode, and the weight is within + 2% of max weighing capacity. -If an error is present on the display press this key to acknowledge.

> NET / FUNCTION KEY / MOVE ONE DIGIT (Move left and right)

-It is used to tare the scale. Taring will be effective only if the scale is stable and within the max weighing capacity. -If the scale has already been tared pressing of the key will cause the tare to be

cancelled and the weight display to return to Gross mode. - During an entry pressing this key will move the blinking cursor one digit to the right. -If the key is kept pressed for more than 3 sec the function menu is entered.

When the display shows Fn 00, press ( to return to weight display or type in the function code desired in order to select a function. The function menu is used to activate a number of software utilities. Refer to FUNCTION MENU, chapter 9 for details.

~ TARE RECALL KEY / PRESET TARE / INCREMENT FLASHING DIGIT

In Net mode only : Pressing this key will cause the tare memory to be displayed briefly. In Gross mode: This key is also used for entering a preset tare via the keyboard.

The display shows PtAre and then 0 0 0 0 0 . Use the > and ~ keys to enter the desired tare and press P to proceed or press ) to abort. When P is pressed the tare keyed in will

be automatically in effect and the weight display will turn to Net mode. To be accepted the tare value must be within the weighing range. The preset tare will be lost in power down.

( PRINT / ACCUMULATE KEY / ACCEPT ENTRY

It is used to transmit weight data to peripheral devices via the serial port. The transmitted weight will also be accumulated. The weight will be printed only if it is stable and within the weighing range of the indicator.

Printing/accumulation will take place if enabled in setup (SETUP 1.1=1 and SETUP 2.t ≠ 00) - In the Animal Weigh mode the preselected number of samples will be count down,

averaged and displayed / printed / accumulated. (if enabled in SETUP 4.A≠00)

< TOTAL / BATTERY CHARGE KEY / SCROLL KEY (Move up and down)

It is used to display the current accumulated total (activated only if SETUP 1.1=1).

Press < again to see the number of weighings.

Press < again to end the total display or Press ( to print/delete the total.

If the key is pressed for more than 5 sec the battery charge in % of capacity is displayed.

Press Y again to end battery charge indication.

& PIECE COUNTING KEY

The key toggles between weight mode or piece counting mode


7.4 Common messages appearing on the display

DISPLAY DESCRIPTION

455.20 - Gross weight of the item on the scale OR - Net weight of the item on the scale, if net weight annunciator is lighted OR

- Tare weight in use, if Tare annunciator is lighted

10045 Number of items on the scale (approximately) Status annunciator pcs is ON

Fn 0 0 Prompt for function program selection

The user has to type in the code desired and press ( Err x x An error has occurred

ZeRo Zeroing of the scale is currently being performed

π π π π π π OVER RANGE : The weight on the scale is heavier than the maximum capacity of the scale OR The load cell signal is very high

υ υ υ υ υ υ UNDER RANGE: The weight on the scale is lighter than the maximum capacity of the scale OR The load cell signal is very low

B Battery status is being indicated

LoC ed The key just pressed has been locked and is non-operative

Other types of messages may be shown while typing in numbers


8. FUNCTION MENU The function menu enables the selection of a number of software programs indirectly. Such programs are the selection of the setup and calibration dialogues, the high resolution mode, selecting the desired print format and other service and checking facilities.

8.1 Accessing the Function menu

� While in the Weighing Mode, press key > and hold pressed for ~ 3 sec. � Display shows Fn 00 � Key in the function code you need (all function codes are listed below)

Use key > to move one digit to the right

Use key ~ to increment the flashing digit Use key ( to accept the displayed number

The corresponding program will be activated.

� To exit the function selection, press ( while Fn 00 is displayed. � To exit from any function program, press )

8.2 List of Function programs

Fn 01 EDIT SETPOINTS The display shows SEtP 1 and then x x x x x the existing value of the setpoint 1 or

low. Use the > and ~ keys to enter the desired value and press P to proceed or

press ) to abort. The display shows SEtP 2 and then x x x x x the existing value of

the setpoint 2 or high. Use the > and ~ keys to enter the desired value and press P to proceed or press ) to abort. When P is pressed the setpoints are saved in non

volatile memory.

Fn 02 DISPLAY REMAINING BATTERY CAPACITY The battery charge will be displayed as a percentage of the remaining capacity. Fn 05 EDIT DATE TIME SERIAL NUMBER

Activated only if setup1.6=1 . The display shows date briefly then 000000 . Enter the date (day,month,year if setup1.7=0 ) or (month, day,year if setup1.7=1 ). The display shows 000000 . Enter the time (hour, min, sec). The display shows n00000 . Enter the serial number of the printout.

Press ) to exit and return to normal weight display.

Fn 06 HIGH RESOLUTION

The display shows Hi rES briefly, then the weight is displayed in x10 accuracy for 4sec and then the display reverts to normal accuracy.

Press ~ to display in high resolution for another 4sec. Press ) to exit and return to normal resolution


Fn 20 - 30 PRINT TYPE SELECT Refer to paragraph 11.6 Equivalent to 2.t in SETUP 2 (i.e. Fn23 corresponds to 2.t=03)

The functions are activated only if SETUP 2.8=1 Fn 20 DISABLE PRINTER OUTPUT Fn 21 PRINT FORMAT 1 (Date time nr and weight) Fn 22 CONTINUOUS WEIGHT OUTPUT Fn 23 PRINT FORMAT 3 (single line gross or net) Fn 24 PRINT FORMAT 4 (single line gross or 3line g , t , n) Fn 25 PRINT FORMAT 5 (single line gross or 3line g , t , n emphasized) Fn 26 PRINT FORMAT 6 (single line nr & gross or g , t , net) Fn 27 PRINT FORMAT 7 (single line weight without any designation) Fn 28 PRINT FORMAT 8 (single line nr & indicated weight) Fn 29 PRINT FORMAT 9 (single line gross or 3line g , t , n demand mode) Fn 30 PRINT FORMAT 10 (Two line gross, tare, net label) Fn 31 PRINT FORMAT 11 (One line date, time, gross, tare, net label) Fn 40 PIN CHANGE Refer to paragraph 11.8 Used to change the current Personal Identification Number that enables access to

the calibration procedure. (The unit is factory set so that the PIN is not active i.e. 000000).

The display shows Pin 0 briefly then 000000. Key in the old pin and press (. The display shows Pin 1 if the pin was correct else the unit resets.

Key in the new Pin and press ( . The display shows Pin 2. Key in the same Pin for validation and press (. The new pin is stored and the display shows PASS briefly. If the two entries are not the same, FAIL is displayed briefly and the program

returns with the old pin remaining in memory.

CAUTION Make sure you do not forget the code entered. If the code is lost the unit must be returned to the factory to initialise the Pin and a fee will be charged. Fn 43 COPY LAST PRINTOUT Used to reprint the ticket just printed, in case the paper is damaged. Fn 48 CALIBRATION NR CHECK

Displays the audit trail counter. Press ( to exit. Fn 49 SETUP & CALIBRATION

Detailed in the technical manual.

Fn 50 PIECE COUNT The display will show the number of pieces on the scale calculated using the average

piece weight already in memory (identical operation with key & ).

Fn 51 SAMPLE & DISPLAY PIECES - Display shows P c X X. Enter the sample size. - Display shows the number of pieces (piece count symbol illuminates).

- Press < to display the average piece weight (Press again to return to pieces


display)

or press > to tare the scale or press ( to print weight and pieces. Press & to return to weight mode.

Fn 52 EDIT AVERAGE PIECE WEIGHT & DISPLAY PIECES

-Display shows X X X X X . Edit the average piece weight in * 100 accuracy. -Display shows the number of pieces (piece count symbol illuminates).

-Press < to display the average piece weight (press again to return to pieces

display) or press > to tare the scale or press ( to print weight and pieces. Press & to return to weight mode.

Fn 53 SAMPLE & DISPLAY AVERAGE PIECE WEIGHT

Display shows P c X X . Enter the sample size.

Display shows the average piece weight in * 100 accuracy. Press ) to exit.


9. TURNING THE INDICATOR ON 1. After all connections have been made, plug in the power cord. 2. Empty the scale

3. Press the ON/OFF key on the front panel to turn the indicator ON. 4. When the LD5208 is powered up a self test routine is initiated during which the following data

is displayed:

� Program Number The software identification code is displayed briefly e.g. LD5208

� Program Date The date of issue of the software version is displayed briefly e.g. 290705 (day - month - year)

� Display segment test.

All display segments are turned on then off for 2 sec (8.8.8.8.8.8)

5. The display shows the weight on the platform, then ZERO.

If the weight is within the zeroing range specified during the configuration of the scale (+2% or +10% of scale capacity) it will be zeroed automatically.

If the scale can not be zeroed Err 15 is displayed. Unload the scale and press ) key momentarily to acknowledge the error.

6. Power up the printer if one is connected to the LD5208. 7. The unit is ready for operation.

.... If any other error message is displayed refer to List of Error codes, chapter 13.

Refer to paragraph 8.3 for description of operation of keys and paragraph 9.2 for description of functions.


10. USING THE INDICATOR

10.1 Zeroing the scale Sometimes the indicator’s display shows a figure higher or lower than zero, although the scale seems to be empty. This may happen, for instance, when water or dirt have gathered on the surface of the scale and are difficult to be removed during the weighing operation. This could be also due to environmental conditions, which cause the center of zero to move from its initial position. Pressing the ZERO key resets weight display to zero, providing a compensation for the above unwanted weights. In order to zero the scale: 1. Wait for the scale to become stable

2. Press the key ) 3. The display shows Z E r o briefly 4. The current weight is set as the zero point 5. The Zero annunciator “ zero “ turns on

.... Zeroing is possible only if the scale is stable and the indicator in gross mode

.... Zeroing is possible only if the weight on the scale is within + 2% of the scale capacity (or +

10% dependant on how the zero range has been defined in the set up of the indicator). If the weight is outside the zero range, pressing the zero key will have no effect

.... The Zero point acquired with this key will be in effect until a new zeroing operation or power down.

10.2 Taring the scale If the item to be weighed comes in a container, the scale needs to be tared, i.e. the weight of the container needs to be measured and subtracted from the total weight (weight of container + weight of the item), so that the net weight is acquired. When the scale is tared, it operates in the so called ‘NET mode’, which is indicated via the status annunciator NET.

.... Taring is possible only if the scale is stable

.... Taring is possible only if the weight on the scale is within the scale capacity


10.2.1 Taring with unknown tare weight If the weight of the container is not known, in order to tare the scale: � If the scale is already in NET mode (NET annunciator ON)

1. Press the key > in order to cancel the existing tare and return to gross mode.

� The scale is in GROSS mode

2. Place the empty container on the scale, wait for the display to stabilize and press the key

> in order to measure the new tare

3. The weight display is reset to zero and the NET annunciator is turned ON 4. Remove the empty container. The weight displayed is the tare with a negative sign. 5. Proceed with the weighing.

� To return to the GROSS weighing mode, press the key > again. The indicator will show then the gross weight, i.e. the total weight of the item plus the weight of its container.

10.2.2 Taring with known tare weight

If the weight of the container is known, the scale can be tared by the manual entry of this known weight. Similarly, the weight of the container will be subtracted from the total weight measured by the scale and the NET weight will be acquired. In order to tare the scale: � If the scale is already in NET mode (NET annunciator ON)

1. Press the key > in order to cancel the existing tare � The scale is in GROSS mode and displays zero

2. Press the key ~ . Display shows P t A r e and then 0 0 . 0 0 0 3. Type in the weight of the container, using key ~ to increment the flashing digit and key

> to move one digit to the right

4. Press key ( to accept the value

5. The weight displayed is the tare with a negative sign and NET annunciator is turned ON

6. Continue with the weighing procedure

� To return to the GROSS weighing mode, press the key > . The indicator will show then the gross weight, i.e. the total weight of the item plus the weight of its container.

.... While in NET mode, pressing the key ~ will cause the existing tare value to be displayed briefly

.... Preset taring is possible only if the scale is stable and zero

.... Preset taring is possible only if the preset tare value is within the scale capacity


10.3 Weighing To weigh an item: 1. If the item comes in a container, the scale needs to be tared first (see previous paragraph) 2. Place the item on the scale 3. Wait for the display to stabilize (the status annunciator turns ON) 4. The weight of the item is to read on the indicator’s display

10.3.1 Accumulating the weight measurements The indicators LD5208 provide the facility of adding each measured weight to an accumulated total. This could be useful for the operator to check how much has been weighed on the scale over a certain period of time. Set up requirement: Parameter Setup 1, 1.1 =1 1. Place the item on the scale

2. Press the key (. The measured weight is added to total

3. Press key <. The display shows the current total 4. Press key < again. The display shows the number of all accumulated weights (no. of

measurements)

5. Press key < again to return to the normal weight display OR

PRESS KEY ( TO PRINT AND RESET THE total .

.... Pressing the Print key causes data output to a printer or PC in the form :

Current serial number – total weight

.... Pressing the Print key clears the totalizing memory


10.4 Piece counting

You can enter the PIECE COUNTING MODE by pressing the key &. In this mode the respective status annunciator will switch ON . Pressing this key again will get you back to the WEIGHING MODE . Piece counting can be effected in 2 ways � Piece counting by sampling � Piece counting by entering the average piece weight

10.4.1 Piece counting by sampling – Function 51 First you have to determine the average piece weight. This is done with the method of sampling. You have to put a small sample on the scale (i.e. a known quantity of items), weigh this sample and enter the known number of pieces that comprise the sample (sample size). The indicator divides the weight of the sample with the number of pieces and stores the average piece weight in its memory .

.... Sample size should not be higher than 99 or less than 5 and sample weight

Piece counting procedure 1. If the sample is stored in a container, tare the scale first 2. Put the sample on the scale

3. Press key > and keep pressed for about 3sec

4. Display shows F n 0 0 . Type in the number 51, using key ~ to increment the flashing digit and key > to move one digit to the right

5. Press key ( to accept the value 6. The display shows P C S X X

7. Type in the sample size and press ( 8. The indicator calculates the average piece weight and stores it in its memory 9. The display shows the number of items that comprise your sample. 10. The indicator is already in the piece counting mode – Status annunciator pcs is ON 11. Add an unknown quantity of items on the scale 12. The display shows the number of pieces

To exit the piece counting mode and return to the weighing mode, press key &


10.4.2 Piece counting by entering the average piece weight – Function 52 You can follow this procedure if the average piece weight is known in advance. You can enter the average piece weight directly, via the indicator’s front panel, without using a sample. Piece counting procedure

1. Press key > and keep pressed for about 3sec

2. Display shows F n 0 0 . Type in the number 52, using key ~ to increment the flashing digit and key > to move one digit to the right

3. Press key ( to accept the value 4. The display shows X X X X X X 5. Type in the known average piece weight in high resolution (100 times more accurate than the

predefined weight) 6. The indicator stores calculates the average piece weight in its memory 7. The display shows the number of items that comprise your sample. 8. The indicator is already in the piece counting mode – Status annunciator pcs is ON 9. Add an unknown quantity of items on the scale 10. The display shows the number of pieces

To exit the piece counting mode and return to the weighing mode, press key &

10.4.3 Calculating a series of average piece weights This procedure may be used for instance for the calculation of a series of average piece weights of items frequently counted by your scale 1. If the sample is stored in a container, tare the scale first 2. Put the sample on the scale

3. Press key > and keep pressed for about 3sec 4. Display shows F n 0 0. Type in the number 53, using key ~ to increment the flashing digit

and key > to move one digit to the right

5. Press key ( to accept the value 6. The display shows P C S X X

7. Type in the sample size and press ( 8. The indicator calculates the average piece weight and shows it on the display in * 100 accuracy.

9. Press ) to exit

10.5 Printing The indicators LD5208 provide the printing of the weighing result, in various formats according to


the needs of each application. Data output is effected via COM1 (RS232C) and can be driven to a printer (TM-295 or Seikosha SP-2400 compatible) or to a PC. Data output format is selected via SETUP 2, parameter 2.t or functions 21-30 (see paragraph 9.2) Errors that may occur during the printing are listed in chapter 13.

10.5.1 To print a weigh ticket : 1. Wait for the scale to stabilize (respective status annunciator ON)

2. Press the Print key ) 3. The display shows P r I n t briefly and returns to the normal weight display

10.5.2 To produce a copy of the last weigh ticket : If the first weigh ticket has not been printed clearly, or the paper has been damaged, you can produce a copy of the last weigh ticket,

.... provided no other action has been taken after the last print (no other key has been pressed)

1. Press key > and keep pressed for about 3sec 2. Display shows F n 0 0 . Type in the number 43, using key ~ to increment the flashing digit


3. Press key ( to accept the value 4. The display shows P r I n t briefly and a copy of the last weigh ticket is printed

.... The last printout is lost in power down

10.5.3 To temporarily disable the printer output : If for some reason you wish disable the print function, then

1. Press key > and keep pressed for about 3sec 2. Display shows F n 0 0 . Type in the number 20, using key ~ to increment the flashing digit


3. Press key ( to accept the value

.... Printer output is enabled automatically on power up


10.6 Selecting print format The indicators LD5208 provide a series of standard print formats. A suitable format is normally selected via SETUP 2 during the installation of the scale. Provided setup 2.8=1 the formats may be user selected via Functions 21-30. The function selection will be in effect until power down.

LIST OF PRINT FORMATS

Fn 21 PRINT FORMAT 1 (SETUP 2.t = 01) Date - time, indicated weight (whatever shown on the display, gross or net)

29-09-99 09:15 N:0010

GROSS : <123.400kg>

or

29-09-99 09:15 N:0010

GROSS : <031.340kg>

TARE : <006.840kg>

NET : <025.500kg>

Fn 23 PRINT FORMAT 3 (SETUP 2.t = 03) Printout of weight in one line.

GROSS : <05210kg>

or

NET : <00950kg>

Fn 24 PRINT FORMAT 4 (SETUP 2.t = 04) Printout of gross weight when indicator in gross mode or gross, tare, net weights when in net mode

GROSS : <06170kg>

or

GROSS : 07940kg TARE : 06170kg NET : 01770kg

Fn 25 PRINT FORMAT 5 (SETUP 2.t = 05) Label of gross, tare, net (Quadruple size)

GROSS : <07940kg>

or

GROSS : 07940kg TARE : 06170kg NET : <01770kg>


Fn 26 PRINT FORMAT 6 (SETUP 2.t = 06) Serial number, gross weight when indicator in gross mode or Serial; number, gross, tare, net when in net mode

12345 07940kgG

or

12345 09260kgG 07940kgT 01320kgN

Fn 27 PRINT FORMAT 7 (SETUP 2.t = 07) Transmission of the weight currently shown on the display without any other characters. Normally used for bar code scanners.

12345

Fn 28 PRINT FORMAT 8 (SETUP 2.t = 08) Serial number and indicated weight.

12345 079.65kg Fn 30 PRINT FORMAT 10 (SETUP 2.t = 10) Ticket, Gross, Tare, Net.

GROSS TARE NET

12.345 02.345 10.000

Fn 31 PRINT FORMAT 11 (SETUP 2.t = 11 and SETUP 2.4 = 1) Automatically printed weigh ticket (available only in LD5208): Date–Time-Gross weight

29-09-99 09:15:05 12.340kg

When the scale is loaded above the min weight (20 scale divisions) and stabilizes at the no-motion state, the above ticket is printed automatically. The scale must be unloaded again (weight below 20 scale divisions), before a new automatic printout takes place.


10.7 Programming the PIN (Personal identification number) This facility is used in order for the owner of the scale to change the current Personal Identification Number that enables access to the calibration procedure. The unit is factory set so that the PIN is not active i.e. 000000) In order to program the PIN: 1. Enter Function 40 2. Display shows: P i n 1 briefly, then 0 0 0 0 0 0

3. Key in the existing PIN number and press ( 4. Display shows: P i n 1, in Pin number was correct, else the unit resets.

5. Key in the new desired PIN and press ( 6. Display shows: P i n 2

7. Key in the same Pin for validation and press ( 8. If the two entries are not the same, F A I L is displayed briefly and the program returns

with the old pin remaining in memory

CAUTION Make sure you do not forget the code entered. If the code is lost the unit must be returned to the factory to initialize the Pin and a fee will be charged.


11. SERIAL COMMUNICATIONS LD5208 indicators have a standard serial port RS232C. More details about the configuration, the use and the communication modes of the serial ports are listed below

11.1 Serial port – RS232 C The port is used to connect to serial printers or personal computers. Data output and handshake requirements are defined by SETUP 2.

TYPE Asynchronous serial ASCII, RS232C standard, full duplex.

PROTOCOL 2400-38400 baud, 1 start, 7 data/even parity or 8 data/no parity, 1 stop bit.

HANDSHAKE DTR BUSY per character for fanfold printers or

REQUEST PAPER END STATUS for EPSON TM-290 slip printer.

CONNECTION DB9 male on rear panel. (J1)

Tx = Pin 3 Rx/DTR = Pin 2 GND = Pin 5 SHIELD = Metal case of D-Type connector Cable: 3 conductor shielded max distance 15m.

DATA The data output of serial port 1 is selectable via SETUP 2, and maybe one of printer output, continuous weight output, alibi transmit or demand weight output.

SET UP requirement 2.t = 01, 03, 04, 05, 06, 07, 08, 10, 11 Printer output

2.t = 02 Continuous weight output 2.t = 09 Print on demand


11.1.1 Printer output (SETUP 2, 2.t=01, 03, 04, 05, 06, 07, 08, 10,11) The data to be printed, printer type and paper dimensions is defined in SETUP 2

11.1.2 Continuous weight output (SETUP 2, 2.t=02) The indicated weight and status information is transmitted continuously. No handshake is required.

DATA BLOCK COMPOSITION STATUS, POLARITY, WEIGHT, SYNC (P+123.45CR)

BYTE

NAME

DESCRIPTION

1 2 3-8 9

WEIGHT STATUS

POLARITY WEIGHT DIGITS SYNC

Bit0 0=NORMAL 1=NO WEIGHT DISPLAY Bit1 0=GROSS 1=NET Bit2 0= 1=AUTO ZERO Bit3 0=WITHIN RANGE 1=OUT OF RANGE Bit4 0=NO STANDSTILL 1=STANDSTILL Bit5 0=NORMAL 1=UNDER MIN. WEIGHING RANGE Bit6 ALWAYS 1 TO OBTAIN PRINTABLE CHARACTERS Bit7 ZERO OR PARITY "+" OR "-" 6 DIGITS DEPENDING ON LD5208 SETUP INCLUDING DECIMAL POINT IF ANY CR (0d hex) FOR SYNCHRONISATION

11.1.3 Print on demand mode (SETUP 2, 2.t=09) The weight data is transmitted every time a character is received from the connected peripheral. The demand character is programmed in SETUP 2, 2.C., e.g. “1” 49d or 31 hex.


12. TROUBLE SHOOTING In case of an unexpected event, caused by software or hardware reasons, the operator is prompted with the message E r r x x , where xx is the Error code. Program is halted.

Press ) momentarily to acknowledge the error and proceed as indicated in the error operator

response. Errors may occur during setup, programming, power-up and during operation. In all other cases of malfunction the user should contact the supplier, as the unit may probably need service from an experienced technician

LIST OF ERROR CODES

DISPLAY POSSIBLE CAUSE ACTION TO BE TAKEN

Err 01

SYSTEM ROM : Faulty EPROM.

Contact manufacturer.

Err 02

DATA RAM : Faulty CMOS RAM.


Err 04

CALIBRATION DATA : Faulty EEPROM.


Err 05

SCALE or A/D CONVERTER.

Check scale, cable, connectors, contact manufacturer.

Err 06

LOW INPUT VOLTAGE .

Check power supplied to the instrument.

Err 15

System has been initialised due to power failure or soft reset.

Zero scale.

Err 20

PRINTER IS NOT ON-LINE. Either not connected or out of paper or failed.

Check printer cables. Press ( to retry Or ) to abort.

Err 26

No paper for EPSON TM295 printer.

Supply with paper.

Err 50

Small sample count.

Retry.

Err 51

Small sample weight.

Retry.

Err 67

Corrupted totaliser.

Clear totalising memory.

Err 69

TOTALISER OVERFLOW. Because totalisers have not been cleared for long time.

Print / clear totalisers. Overflow is not critical. But remember that 1 total capacity must be added to the indication, each time an overflow occurs.

.... To exit from error display press ) .


13. SET UP AND CALIBRATION RECORD

PIN

Calibration data DEAD LOAD CP = SPAN CM =

Scale parameters

DISPLAY

DIGITS

DECIMA

L POINT

DISPLAY

RESOLUTION

WEIGHING

RANGE

DIGITL

FILTER

UPDATE

RATE

MOTION

SAMPLES

AZM POWERUP ZERO

DUAL

FILTER

CLEAR A/D

ERROR

BATTERY

INDICATOR

LEAD ZERO

BLANK

AMPLIFIER

GAIN

SCALE

PARAMETER 1.P 2.P 3.P 4.P 5.P 6.P 7.P 8.1 8.2 8.3 8.4 8.5 8.6 8.7

AC/DC

EXCITATION

ZERO

RANGE

2% / 10%

DUAL INT.

OR RANGE WEIGHT UNIT

DUAL RANGE

8.8 8.A 8.b 8.c 0.P

SET UP 1 – Operational parameters TOTALISER

MEMORY

OVER-IN-

UNDER

SETPOINT

AT STABLE

PIECE

COUNT

RESERVED DATE TIME

CLOCK

DATE

FORMAT

FUNCTION

PROGRAMS

AUTO POWER

OFF

PIECE COUNT NUMBER

OF SAMPLES

SETUP 1

OPERATION

1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.t 1.E

SETUP 2 - Serial port

PRIN

T

TYPE

DEMAND

CHARACT

ER

PAGE

LENGTH

PAPER

REVERSE

LEFT

MARGI

N

PAGE

HEADE

R

LINE

TERMI

NATIO

N

PRIN

TER

MOD

EL

RESER

VED

PRINT

BELOW

MIN

CAP

AUTO

PRINT

RESE

RVE

D

WAIT

UNLOA

D

PRINTER

ERROR

CONTROL

OPERATOR

PRN TYPE

CHANGE

BAUDRATE DATA BITS

2.t 2.C 2.L 2.r 2.A 2.F 2.E 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.b 2.d

SETUP 4 – Animal weighing

ANIMAL

WEIGH

SAMPLES

4.t

SETUP 6 – Keys locked

ZZERO key TARE key PRESET

TARE key

PRINT key TOTALkey PCS key

SETUP 5

SET POINT

6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8

electronic weight indicators model ld5208

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