Vetek WLC 1/A2 User manual

User Manual
Precision scales – WLC series
Manual number:
LTI-05-11/01/09/A
Vetek Weighing AB, Box 79, S-76040 Väddö, Sweden
Phone [phone] fax. [phone]
[email protected] www.vetek.com

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JANUARY 2009

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TABLE OF CONTENTS
1. INTENDET USE..................................................................................................................... 5
2. PRECAUTIONS..................................................................................................................... 6
2.1. Maintenance .................................................................................................................. 6
2.2. Power supply ................................................................................................................. 6
3. WARRANTY CONDITIONS................................................................................................... 6
4. MAIN DIMENSIONS .............................................................................................................. 7
5. UNPACKING AND ASSEMBLY............................................................................................ 9
6. GETTING STARTED ........................................................................................................... 10
7. BALANCE LEVELLING ...................................................................................................... 11
8. KEYPAD .............................................................................................................................. 11
9. EYS’ FUNCTIONS ............................................................................................................ 12K
10. INSCRIPTIONS ON THE DISPLAY .................................................................................. 13
11. USER MENU ..................................................................................................................... 14
11.1. Submenus ................................................................................................................. 14
11.2. Brows ng user menu.................................................................................................. 15i
11.2.1. pad ............................................................................................................ 15Key
11.2.2. Return to the weighing mode .......................................................................... 15
12. WEIGHING ........................................................................................................................ 16
12.1. Tarring ....................................................................................................................... 17
12.2. Inscribing tare value .................................................................................................. 17
12.3. Zeroing ...................................................................................................................... 18
12.4. Weighings in two ranges ........................................................................................... 18
12.5. Selection of basic weight unit .................................................................................... 19
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13. MAIN PARAMETERS........................................................................................................ 21
2.6. Temporarily selected unit .......................................................................................... 20
13.1. Setting a filtering level ............................................................................................... 21
13.2. Median filter ............................................................................................................... 22
13.3. Autozero function....................................................................................................... 23
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14. RS 232 PARAMETERS ..................................................................................................... 25
3.4. Tare function.............................................................................................................. 24
14.1. Printout type............................................................................................................... 25
14.2. Minimal mass threshold............................................................................................. 26
14.3. Baud rate ................................................................................................................... 27
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15. OTHER PARAMETERS .................................................................................................... 29
4.4. Serial transmission parameters ................................................................................. 28
15.1. Backlight function ...................................................................................................... 29
15.1.1. ing from mains.................................................................. 29Backlight for supply
15.1.2. Backlight for supplying from batteries ............................................................. 30
15.2. “Beep” signal – after pressing a key .......................................................................... 31
15.3. Automatic switch-off .................................................................................................. 31
15.4. Batter voltage level check........................................................................................ 32y
15.4.1. ..................................................................................... 32Checking the batteries
15.4.2. discharge pictogram............................................................................ 33Battery
15.4.3. ........................................................................... 33Accumulator charging option
15.4.4. Formatting rechargeable battery packs........................................................... 34
16. OPERATION MODES........................................................................................................ 35
16.1. Setting accessibility of operation modes ................................................................... 35
16.2. Selecting quantity of operation modes ...................................................................... 36
16.3. Counting pieces of the same mass ........................................................................... 37
16.4. +/- control referring to the inscribed standard mass .................................................. 39
16.5. Control of % deviation referring to the inscribed standard mass ............................... 40

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16.5.1. its weighing..................................................... 41Standard mass determined by
16.5.2. Mass of standard inscribed to scale memory .................................................. 42
16.6. Automatic tare ........................................................................................................... 43
16.7. Measurement of maximal force on the pan – latch.................................................... 44
16.8. Totalizing ................................................................................................................... 44
16.8.1. ork mode.................................................................................. 45Enabling the w
16.8.2. ........................................................................................ 45Totalizing procedure
16.8.3. of the last value of sum of weighed goods ........................................ 46Memory
16.8.4. Return to weighing .......................................................................................... 47
16.9. eighing animals ...................................................................................................... 48W
16.10. Tare memory............................................................................................................ 49
16.10.1. Entering the tare value to the scale memory ................................................. 49
16.10.2. Selecting a tare value from the memory........................................................ 51
17. SCA E CALIBRATION ..................................................................................................... 52L
17.1. Internal calibration ..................................................................................................... 52
17.1.1. .............................................................................. 53Manual internal calibration
17.1.2. Automatic internal calibration .......................................................................... 54
17.2. External calibration .................................................................................................... 57
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18. COOPERATION WITH PRINTER ..................................................................................... 60
7.3. Start mass adjustment............................................................................................... 58
19. COOPERATION WITH COMPUTER................................................................................. 61
20. COMMUNICATION PROTOCOL ...................................................................................... 62
20.1. General information ................................................................................................... 62
20.2. A set of commands for RS interfaces ........................................................................ 62
20.3. Respond message format ......................................................................................... 63
20.4. Command’s description ............................................................................................. 63
20.4.1. ng ............................................................................................................ 63Zeroi
20.4.2. ng ............................................................................................................. 63Tarri
20.4.3. .................................................................. 64Send the stable result in basic unit
20.4.4. in basic unit ........................................................ 64Send the result immediately
20.4.5. ............................................................... 65Send the stable result in current unit
20.4.6. in current unit ..................................................... 65Send the result immediately
20.4.7. itch on continuous transmission in basic unit ............................................. 66Sw
20.4.8. itch off continuous transmission in basic unit ............................................. 66Sw
20.4.9. Switch on continuous transmission in current unit .......................................... 67
20.4.10. Switch off continuous transmission in current unit ........................................ 67
20.4.11. Send all implemented commands ................................................................. 67
20.5. Manual printouts / automatic printouts....................................................................... 68
20.6. Continuous transmission ........................................................................................... 69
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21. ERROR COMMANDS........................................................................................................ 70
0.7. Configuring printouts ................................................................................................. 69
22. TROUBLE SHOOTING ..................................................................................................... 70
23. TECHNICAL PARAMETERS ............................................................................................ 71
23.1. Precisions scales of WLC series ............................................................................... 71
23.2. Verified precise scales of WLC series ....................................................................... 72
23.3. Precise scales of WLC…/C/2 series.......................................................................... 73
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24. ADDITIONAL EQUIPMENT............................................................................................... 74
3.4. Verified precise scales of WLC…/C/2 series............................................................. 73

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1. INTENDET USE
Scales are designed for fast and precise measurements of weighed loads
masses and direct commercial settlements. Tarring in full weighing range
enables to determine net mass of weighed loads. Additional display is
additional equipment of scale.
Functions:
xbacklight of display
xlevel of filtration
xautozero function
xsetting baud rate of transmission
xcontinuous data transmission for RS 232
xautomatic operation for RS 232
xdesigned printouts
xdesignation minimum mass for function operating
xcounting pieces
x+/- mass control
xpercentage deviation from standard mass
xlatch of maximum scale indication
xautomatic tare
xmemory of tare
xinscribing tare value
xMemory of 9 tare values
xautomatic scale switch-off
xuser calibration
xinternal calibration
xTotalizing
xWeighing animals
User functions may have attribute of accessibility. For this reason it is
possible to adjust scale to individual needs to provide access to only
these functions which are currently needed. Attribute determination
accessible / inaccessible is possible in user menu and described in
further part of manual.

2. PRECAUTIONS
2.1. Maintenance
A. Please, read carefully this user manual before and use the device
according to its intended use.
B. Dead batteries (accumulators) should be utilized according to the law;
C. Devices that are to be withdrawn from use age should be sent back to
the producer or in case of own utilization do it according to the law.
In case of an elongated storage period in low
temperatures, it is not allowed the full discharge
of the accompanied batteries.
2.2. Power supply
Weighing indicators in plastic casing and WLC/B1 series can be supplied
from power adapters and NiMH rechargeable batteries (standard
equipment). New rechargeable batteries should be formatted according
to the description in the chapter 15.4.4. of this manual.
If you want to use normal batteries instead of rechargeable ones,
proceed as follows:
xBefore installing non-rechargeable batteries turn on the device
and set <5.5.CHr6> to <no>, to switch off charging.
xThen install the batteries.
Installing batteries without changing <5.5.CHr6> to <no>
may cause damage of batteries and the indicator.
3. WARRANTY CONDITIONS
A. RADWAG is obliged to repair or change those elements that
appears to be faulty because of production and construction reason,
B. Defining defects of unclear origin and outlining methods of
elimination can be settled only in participation of a user and the
manufacturer representatives,
C. RADWAG does not take any responsibility connected with
destructions or losses derives from non-authorized or inappropriate
(not adequate to manuals) production or service procedures,
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D. Warranty does not cover:
xMechanical failures caused by inappropriate maintenance of
the device or failures of thermal or chemical origin or caused
by atmospheric discharge, over voltage in mains or other
random event,
xInappropriate cleaning.
E. Loss of warranty appears after:
xAccess by an unauthorized service,
xIntrusion into mechanical or electronic construction of,
unauthorized people,
xRemoving or destroying protection stickers.
F. Warranty conditions outline the warranty period for rechargeable
batteries attached to the device for 12 months.
G. The detailed warranty conditions one can find in warranty certificate.
H. Contact with the central authorized service:
[phone] ext. 106 or 107.
4. MAIN DIMENSIONS
Scales WLC/A1/C/2
Scales WLC/A2, WLC/A2/C/2
Scales WLC/B1
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Scales WLC/C1/R
Scales WLC/C2/R
Scales WLC/C1/K
Scales WLC/C2/K
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5. UNPACKING AND ASSEMBLY
xUnpack and put the scale on a flat even stable surface far away
from sources of heat,
xRemove the transport protection:
Scales WLC…/C/2:
Scales WLC/B1:
Scales WLC/C/K, WLC/C/R:
xInstall the weight pan according to the drawings below:
Scales WLC/A1/C/2:
scales WLC/A2, WLC/A2/C/2:
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scales WLC/B1:
scales WLC/C/K:
scales WLC/C/R:
6. GETTING STARTED
xAfter unpacking and mounting the scale level it
out. Use levelling legs and the level condition
indicator installed in the basis of the scale.
xTurn the device on using the key – keep pressing the key
for about 0.5 sec,
xWait for the test completion,
xThen you will see zero indication and pictograms:
- zero indication
- stable result
kg - weight unit
xIf the indication is not zero press key.
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Caution:
In case of verified scales in II OIML class with divisions e=10d
(where: d – reading division, e – verified division) the last digit
will be marked as shown below:
7. BALANCE LEVELLING
xOperation temperature range for this device is outlined as
+15qCy+30qC;
xAfter powering up this device requires 30 minute worming up;
xDuring the worm-up time the indication can change;
xUser calibration should be performed after the warm-up time.
xTemperature and humidity changes during operation can increase
measurement errors, which can be minimized by performing the
user calibration process.
8. KEYPAD
Keypad of WLC/A2 series Keypad of WLC…/C/2 series
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Keypad of WLC C1…C2 series Keypad of WLC/B1 series
Notice:
Scales of WLC/A2 series are equipped with an additional key for
tarring and has no additional functions but the keypad of the WLC…/C/2
scale include an additional key for direct starting the process of
internal calibration. Because the functionality and operation of the
rest of the keys is the same, the further part of this manual
describes the keypad of WLC C1…C2 series.
9. KEYS’ FUNCTIONS
Switching on/off
Function key (operation mode selection)
Sending a weighing result to RS232
Zeroing
Tarring
Manual internal calibration (WLC…/C/2 scales)
Notice:
After pressing + keys’ functions changes. The way of operation
in this mode is described in details further in this manual.
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10. INSCRIPTIONS ON THE DISPLAY
No Text string Description
1 FIL Filter level
2 bAud Transmission baud rate
3 PCS Piece counting
4 HiLo +/- control according to a standard mass
5 rEPL Automatic printout
6 StAb The condition of printing data
7 Auto Autozero correction
8 t1 Power save – time to switch off while no operation
9 toP Latch of the max measurement
10 Add Totalizing
11 AnLS Weighing animals
12 tArE Memory of 9 tare values
13
Indication in autozero zone (indication = exact zero)
14 Stable result (ready to read)
15 PCS Operation mode - counting pieces
16 kg (g) Operation mode - weighing
17 Rechargeable battery pack or battery discharged (BAT-LO)
18 Net Tare function has been used
19 Min +/- control with reference to the standard mass: setting
the lower threshold or mass below the first threshold
20 OK +/- control with reference to the standard mass:
load mass between the thresholds
21 Max +/- control with reference to the standard mass: setting
the upper threshold or mass over the second threshold
22 CALIb The stability test for the internal calibration procedure
23 CAL-H Manual internal calibration
24 CAL-A Automatic internal calibration after powering up
25 CAL-t Internal calibration triggered of by temperature
26 CAL-C Internal calibration triggered of by timer
27 Abort Terminating of internal calibration
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11. USER MENU
11.1. Submenus
User’s menu is divided into 6basic submenus. Each group has its
own characteristic name preceded by the letter Pand a number.
P1 rEAd
P 1.1 Fil | 3
P 1.2 Auto | YES
P 1.3 tArA | no
P 1.4 Fnnd | YES
P2 Prnt
P2.1 Pr_n | StAb
P2.2 S_Lo |
P2.3 bAud | 9600
P2.4 S_rS | 8d1SnP
P3 Unit
P3.1 StUn | kg
P4 Func
P4.1 FFun | ALL
P4.2 Funi | no
P4.3 PcS | no
P4.4 HiLo | no
P4.5 PrcA | no
P4.6 Prcb | no
P4.7 AtAr | no
P4.8 toP | no
P4.9 Add | no
P4.A AnLS | no
P4.b tArE | no
P5 othr
P5.1 bL |Auto
P5.2 bLbt |70
P5.3 bEEP |YES
P5.4 t1 |Auto
P5.5 CHr6 |YES
P6 CAL
P6.1 St_u | * FUNCTION *
P6.2 uCAL | * FUNCTION *
P6.3 CA-C | 0
P6.4 CA-r | YES

11.2. Browsing user menu
Use scale’s keys to move inside the menu.
11.2.1. Keypad
+
Entering main menu
+
Inscribing tare value
Increasing a digit value by „1”
moving down in the menu
+
Battery / accumulator state monitoring
+
Toggling between gross / net values
Selecting the parameter or changing the value
of a selected parameter
Entering the selected submenu
or activating a parameter for changes
Confirmation (enter)
Leaving without changes or reaching a higher level
of the menu
11.2.2. Return to the weighing mode
The changes that have been introduced should be saved
in order to keep them in the memory for good.
While leaving parameters press key until the text
<SAuE?> appears on the display. Then press:
– to save changes or – to leave without changes.
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12. WEIGHING
Put a load you want to weigh on the weighing pan. When the
pictogram appears it means that the result is stable and ready to read.
In order to assure long-term operation and appropriate measurements of
weighted loads following precautions should be taken into consideration:
xLoads should be placed on the pan delicately and carefully
in order to avoid mechanical shocks:
xLoads should be placed centrally on the pan (errors caused
by eccentric weighing are outlined by standard PN-EN 45501
ch. 3.5 and 3.6.2):
xDo not load the pan with concentrated force:
xAvoid side loads, particularly side shocks should be avoided
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12.1. Tarring
In order to determine the net mass put the packaging on the pan.
After stabilising press -
(Net pictogram will be displayed in the
left upper corner and zero will be indicated).
After placing a load on the weight pan net mass will be shown.
Tarring is possible within the whole range of the scale. After unloading
the pan the display shows the tarred value with minus sign.
Notice:
Tarring cannot be performer when a negative or zero value is being
displayed. In such case Err3 appears on the display and short audible
signal will be emitted.
12.2. Inscribing tare value
You can also inscribe a tare value. While in weighings mode press:
xPress simultaneously and ,
xYou will see :
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xUsing
and set the tare value,
xPress ,
xProgram returns to weighings mode. The inscribed tare value
can be seen on the display with „–” sign,
xTare can be inscribed anytime in weighings mode.
Notice:
1. You cannot inscribe a new tare value when the tare value in memory
is greater than zero. In the case of trying this the <Err3> message
will be displayed and short audible signal will be emitted.
2. Users can also enter up to 9 tare values to the scale memory
(see 16.10 of his manual).
12.3. Zeroing
To ZERO the scale press: .
The scale will display zero and following pictograms: and .
Zeroing is only possible within the scope of ±2% of full scale. While
zeroing outside the scope of ±2% you will see <Err2>. Zeroing
is possible only in stable state.
Notice:
Zeroing is possible only within the ±2% interval of the maximal range.
If zeroing is performed beyond this range the <Err2> message and
short audible signal will be emitted.
12.4. Weighings in two ranges
Switching between the I range and the II range happens automatically
(exceeding Max of the I range). Weighings in the second range is
signalled by a pictogram in the top left corner of the display.
Then weighings is done with the accuracy of the II range to the moment
of returning to zero (autozero range )where the scale switches back
to the I range.
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12.5. Selection of basic weight unit
This function is used to set weight unit the scale will start with.
Procedure:
xEnter the submenu <P3.Unit> and then:
xpress ,until the expected unit appears on the display:
Options:
A. When the basic unit is [kg], users can toggle between:
[kg, lb, N], for verified scales [lb] is not accessible,
B. If the basic unit is [g], users can toggle between:
[g, ct, lb], for verified scales [lb] is not accessible,
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xAfter you select the unit press
, the scale returns to:
xReturn to weighing according to chapter - 11.2.2.
Notice:
After turning on the scale always sets the basic unit.
12.6. Temporarily selected unit
This function is used to set weight unit the scale will use temporarily
until the next power off or next selection.
Procedure:
xPress and then:
xAfter you select the unit you want come back to weighing procedure.
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