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WEIGHBLOKWEIGHBLOK
Digital Scale
Setup & Operation Manual
Revision 0502
4-2-03
ã 2001-2002 Transcell Technology,Inc.
Contents subject to change without notice.
Transcell Technology, Inc.
975 Deerfield Parkway
Buffalo Grove, IL 60089
Tel (847) 419-9180
Fax (847) 419-1515
E-mail: transcell@transcell.net
Web: www.transcell.net
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Manual- Weighblok Rev 1 4-2-03
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975 Deerfield Parkway 800-503-9180 www.transcell.net
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Weighblok Manual
Normal Calibration
Calibration
switch
ON
PRINT
NET
GROSS
OFF
ZERO
TARE
Communicationsport
External
power
Alkaline
batteries
The Weighingblock is a robust Scale. It is designed for portable use. When
transported by car between different working places we recommend using of a
protected space or a case. This will extend the interval for service.
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Table of contents Page
Introduction, Keyboard Functions 3
Configuration and Setup Menu. Display 4
Parameters 5,6
Calibration 7
Specifications and Displayed Error Codes 8
Troubleshooting 9
Scale use 10
Communication port 11
Introduction
TranscellnewWeighblokseriesarearuggeddigitalscalecastedinstrongaluminum.Itcomesstandardwithalarge(.75")LCDscreenforeasyreadout.
Allsetupparametersmaybeenteredviathemembrane panelkeys.TheScalehasan”intelligent” auto power off functionandcan be operated
with 6 alkaline 1,5 V batteries. If thebatteryis not goodenoughto ensure a correctvaluethescalewillturnoff.
The scaleisdevelopedespeciallyfor weighing of refrigerant cylinders, and tocontrol whentransferring refrigerantstoother cylindersor equipments.
Thescales setup parameters are alteredthrough the Setupmenu whilea few other parameters are alteredthroughthe User menu The
configuration section of themanual explains howto use the five frontpanel keysto maneuver and savesettingsin bothmenus.
TheWeighblok scale can be used as a Batching Scale or regularweighingscale
The Weighblokis suitablefor use in weighing applications as: refrigerationcylinders, fire protectioncylinders,CO2,
cylinders, parcels, persons,etc.
Keyboard functions
Thecalibrationswitch is only for calibration.
IndicatorON
InnotEC-type approved version: Sends"Print"datato printerifscaleisstableandnotinoverload.
Notactivewhen"Continuous" optionisselectedinUser Menu.
“Dot”.Extended graduationwhenpushedand5 secafterrelease.Whenpressed andreleased,theDOT
button istheunitswitch key, lb– kg.
Togglesbetween GrossandNetweight display onlyifa Tarehasbeenestablished.
Setsscaleto display"0" wheninGross mode,and withinzerobandrange.Whenpushed in for3
seconds,theScale switches off.
Used toestablish a Tare(zerotheScale) while in eitherGrossmodeor
Netmode. Thisoperationcannotbeperformedat orbelowGross zero.
ON
PRINT
NET
GROSS
OFF
ZERO
TARE
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Configuration
TheWeighblokhastwomenus.
TheSetup menu, containing mostof the indicator's functionalSetupparameters,consistsof 15 separate menu selections,each withitsown
sub-menuofchoices.
The User menu, except A5 and A10 containing most of the indicator's serial communication parameters, which not are shown in this
manual.
TO ENTER THE SETUP MENU
1. Turn the power
OFF
.
2. Put Calibration Switch to the Calibration position.
3. Press the ON key.
4. The display shows "F1" to indicate that the unit is in Setup menu mode.
5. To move to a new “ F” heading, use TARE or ON to move up or down.
6. To move to the selection value, press ZERO once.
7. IncreaseanddecreasethevaluewithPRINTandTARE.
8. To save the value, press NET.
9. Press DOT key to go back to parameter number.
10. To go back to normal menu put Calibration Switch to the Normal position.
NOTES ON THE SETUP MENU
There is an
F21
sub-menupresent that is for FACTORY USE ONLY!
DISPLAY
LCD Enunciator
MEANING
è0ç
Better known as the “Center of Zero” enunciator, this light is active whenever the displayed weight is
within ± 0.25 divisions of true zero.
N
Indicates that the indicator is displaying net weight.
G
Indicates that the indicator is displaying gross weight.
T
Indicates that a tare weight has been established in the system.
lb, kg
Indicates the unit of the displayed weight (normally disabled).
bAtt
Indicates a low battery condition. Re-charge the battery or replace if alkalinebatteries.
Indicates stable weighing.
Weighblok Enunciator Definitions
ON
PRINT
NET
GROSS
OFF
ZERO
TARE
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PARAMETER DESCRIPTION CODE/VALUE
F1
Graduations
Specifies number of the Weighingblocks graduations. Value should be consistent
with legalrequirementsand environmental limitson the usefulsystem resolution.
5001,000 1,500
2,000
2,5003,000
4,000, 5,000 6,0008,000 10,000
12,000 13,00015,00020,000 30,000
40,000 50,000
F2
SpanGain
SpanGain is related to A/D integration time. Thelargerthe spangain, the higher the
internalresolution, but the slower theupdate speed.
25 50 75
100
150200
F3
Zero Track Band
Selects the range within which the scale will automatically zero. Note that the scale
must be in standstill to automatically zero. Selections are in Display Divisions. “d”
= graduation
0d
0.5d
1d 3d 5d
F4
Zero Range
Selects the range within which the scale maybe zeroed. Notethat the indicator must
bein standstillto zero the scale.
100% 1.9%
2%
F5
MotionBand
Sets the level at which motion is detected by comparing the present display update
with the previous one. If motion is not detected for two seconds or more, scale is in
standstill and can process a Print or Zero command. Maximum value varies
depending on local regulations.
0.25
1d
3d
5d 10d
F6
DigitalFilter
Averages weight readings to produce higher accuracy. The higher the filter number,
the greater the accuracy but the slower the response time.Choose4 or 8 unlessa very
fastresponse is needed.
1 2
4
8
F7
Overload Limit
Selects the desired formula which determines the point at which the indicator shows
overload ("oooo"). All selections are based on the primary unit selected in F8.
"FS" = Fullscalein primaryunits.
FS FS + 2%
FS+ 1d
FS+ 9d
F8
Calib. Unit
Selects the primary base unit to be used in the calibration process. Also the default
unitfornormal operation. "1" =
primary unit is lb. "2"= primaryunit is in kg.
1
2
F9
DisplayDiv.
Determines the desired weight increments. Value should be consistent with legal
requirements.
1
2
5
F10
Decimal Pt.
Determines location of the decimal point.
0
0.0 0.00
0.000 0.0000
F11
Batchingfunction.
Activating Batchingfunction (not be usedwith “EC”-Scales
0 = OFF
1 = ON
F16
Zero Calibration
Places indicator into the zero calibration routine. Scrolling down with the
ZERO
key
onelevelbegins the procedure.
Press
ZERO
keyto beginsequence
F17
SpanCalibration
Places indicatorinto the span calibrationroutine.Scrolling down with the
ZERO
key
onelevelbegins the procedure.
Press
ZERO
keyto beginsequence
F18
F19
F20
F21
FactoryReset
This sub-menu will reset all parameters in the “F” and “A” menu to the default
settings.USEWITH CAUTION!
Press the
ZERO
keytwiceto execute.
A1
A2
A3
A4
A5
Disablethe lb/kg
Key
Allows the lb/kgkeyto be disabledand allows use ofextended graduation.
"0" = Disable the lb/kg key "1" = Enable the lb/kg key
”2” Activate the extended graduationfor VB2-100-EC
0
1
2
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F6
F7
F8
F9
A10
Auto Power Off
Period
Selectsthe auto power off time period in minutes:
“Off” = Disabled(Always ON)
1, 2, 3, 5, 10, 15, 20, 30, off
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Calibration
We recommend the scale to be calibrated at periodic intervals with the frequency based on usage.
The minimum test weight that can be used is 70% of full-scale capacity.
To adjust the zero point using the F16 zero adjust procedure:
1. Turn the power OFF
2. Put Calibration Switch to the Calibration position.
3. Press the ON key.
4. Scroll to "F 16". Use TARE or ON to move up or down.
5. Press ZERO. The display will momentarily show "C 0" followed by a value. (If you want, press Dot
to go back to parameter number.)
6.
After making sure that there are no weights on the platform, press ZERO to zero out the displayed
value.
7.
Press NET to save the zero point value. The display will show "EndC0"momentarily, and then revert
back up to F16. At this time, proceed to the F17 span calibration to complete indicator calibration.
To adjust the max point using the F17 span adjusts procedure:
1. Scrollto"F 17",thenpress ZERO to enterspancalibration menu.
2. The display will momentarily show "C 1" for the span calibration, followed by a value with one flashing digit. This
value will be zero. Place the test weight on the Scale.
3. Pressing TARE or ON will change the position of the flashing digit.
4. Increase the flashing digit by pressing Dot. Decrease the flashing digit by pressing ZERO.
5. Aftersettingtheexactvalue,press NETto savethevalue.
6. Iftheadjustmentwassuccessful, the displaywillshow"EndC1" momentarily,and thenrevertbackup to F17.
"
Err0
" – The calibrationtestweight or theadjustedkeyed-inweight is largerthanthefullcapacityof
thescale.Change thecalibration testweightorcheck theinput data.
"Err1"– Changethecalibration test weightorchecktheinputdata.
"Err2"– Theinternalresolutionof thescaleis nothighenough toacceptthecalibrationvalue.
Selecta largerparameterfortheSpanGain(F2).
7. Put the Calibration Switch to the normal mode.
8. Check the Scale.
ON
PRINT
NET
GROSS
OFF
ZERO
TARE
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Specifications and displayed error codes.
General
Model
Capacity /
Graduation
Weightkg
Dimensionmm
Battery
Weighblok
Max100 kg / 50 g
Not approvedversion
4,5
260x 345 x 55
6 of alk. 1,5 V batteriesLR6/AAfor 15 hoursoperation.
OPERATORINTERFACE
Display
0.75" (19 mm) 7-segment, LiquidCrystal,6-Digit
Additional Symbols
Net, Gross,Stable, Tare, lb, kg, Zero
Keyboard
5-key flat membranepanel
ENVIRONMENTAL
Operating Temperature
StorageTemperature
Displayed error codes.
CODE
MODE
MEANING / POSSIBLE SOLUTION
rrrrrr
NormalOperating
Mode
Gross Overload. A weight greater than the rated capacity has been applied to the scale. Removethe weight
from the platter or try re-calibrating the scale. Otherwise, check for a bad load cell connection or possible
load celldamagedue to overloading.
bAtt
NormalOperating
Mode
Indicates a low batterycondition. Re-charge the battery or replaceif alkalinebatteries.
Err0
SpanCalibration
Mode (F17)
Keyed-inweightvalueis larger than full-scalecapacity. Usea smaller test weight or check keyed-invalue.
Err1
SpanCalibration
Mode (F17)
Keyed-in weight value is less than 1% of full-scale capacity. Use a larger test weight or check keyed-in
value.
Err2
SpanCalibration
Mode (F17)
There is not enough load cell signal to produce the internal countsnecessary to properlycalibrate the scale.
First check all load connections. Use F16 mode to view internal counts. See Appendix C for more
information.
Err3
All Modes
Non-volatile memory readerror. One or moresetupparameters havebeenlost.
Err4
All Modes
Non-volatile memory writes error. Indicator needsservice.
Err5
Key-in Span
Calibration Mode
(F20)
You haveattempted to entera zero valuefor C1.Enter a knowncalibrationvaluegreater than zero.
Err7
Initialization
Noreadingfromthe ADC. Makesure thereis a loadcell(s) connected to the indicator at start-up.
Err9
NormalOperating
Mode
Spancalibrationvaluehas beenlost. Re-calibratethe Scale.
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Troubleshooting
If the Weighblok to power up.
1. Change to new alkaline batteries.
2. Check to see if AC adapter is plugged in.
Ifthescale startsbut the displayshowswrong.
1. AdjustandCalibratetheScale.
Bottom plate removal
1. Removethetwoscrewsfromthebottom plate oftheWeighblok..Be carefulwith thekeyboard connection.
2. Check the inside of the Scale visually. Look for bad cables and connections.
If the Scale shows F1
1. Check the position of the Calibration Switch.
2. Reset to normal mode.
LoadcellConnections
Check the Loadcellwitha universal voltmeter, seetable.The leftpin isnumber1.
Terminal J1
Description
Colours Loadcell
AG
Colours Loadcell 1042
E+ (1)
Out +5 VDC*
Brown
Green
S+ (2)
In +
Yellow
Red
E- (3)
Out 0 VDC
Green
Black
S- (4)
In -
White
White
1. Check the excitation voltage (E+ and E-) from the Indicator. Should be 5,0* (+-0,4) VDC.
2. Check the input to the Indicator (S+ and S-). The output from the Loadcell S+ and S- (pin 2 and 4)
will increase from aprox. 0 to 10 mV analogue to the capacity range (100 or 30 kg). Note S+ is plus
and S- is minus. The polarity is important.
3. If the input is wrong, <0 mV or > +10 mV with unloaded Scale check the Loadcell. Do have only
E+ and E- connected (or probably an external Power 5 VDC) and checks the output from the
Loadcells direct on the wires. Should be 0 mV to +10 mV depending on the load.
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LCD
Enunciator
MEANING
è0ç
Better known as the “ Center of Zero” enunciator, this light is active
whenever the displayed weight is within ± 0.25 divisions of true zero.
N
Indicates that the indicator is displaying net weight.
G
Indicates that the indicator is displaying gross weight.
T
Indicates that a tare weight has been established in the system.
lb, kg
Indicates the unit of the displayed weight (normally disabled).
bAtt
Indicates a low battery condition. Re-charge the battery or replace if alkaline
batteries.
Indicates stable weighing.
Weighblok Enunciator Definitions. Shownabove istheLCDdisplay.Beforereadingthevalue thestable indicatormustbe”on”.
Ifnot,waita fewseconds untilitappears.
Basic scale use
1. Press ON to start the scale.
2. If necessary, press ZERO to obtain a weight reading of zero.
3. Press OFF to switch off the scale. Hold 3 seconds.
4. The scale switches off automatically after 10 minutes when not in use
Weighing (e.g. a cylinder with liquid)
1. Unload scale and press ZERO.
2. Place the object (cylinder, container, etc) on the scale’s platter and allow the weight indication to stabilize. If the item
weight exceeds the scale’s weight capacity, it displays “ rr rr rr”. Press TARE to zero the Scale. The display
shows zero weight and turns the NET enunciator on.
3. NET/GROSS toggles between Gross and Net weight display only if a Tare has been established.
4. “Dot”. Extended graduation.
General advice
When the Scale is not in use and is transported between different working places, we recommend usage of a case or any
other protection against vibrations and other hard environmental conditions. Protect the scale with a plastic bag if there is
any risk of working in a wet environment.
ON
PRINT
NET
GROSS
OFF
ZERO
TARE
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Communication Port
The Weighblok has a Communication Port standard. It is possible to connect different accessories such as a Printer,
PC/Notebook or externalrelay.
Printer for the weight value.
Many printers in themarketcanbe connected. For moreinformation, contact Transcell.
PC/Notebook
TheScale can be connected to a PC/Notebook. Formoreinformation,contact Transcell.
External Relay
Thescale can be connectedto an external relay.A 5 V output is availableto actuate a relayfor cut-off controlwhen filling or
discharging.
One timeset up: F11 must be “1” andA5must be “2” (normallydonewhen delivered)
RS-232
PIN NUMBER
PIN NAME
2
RXD
3
TXD
5
GND
7
TARGET
TTL(+5V/OV)
8
TTL +5V
Setthetarget weight value:
1. Toset the Target Weight:
2. Press, ”Dot” for 5 seconds, display shows 0,0 (flashing).
3. PressON until the first relevant digitflashes.
4. Change to thedesiredvalue with”Dot”.
5. PressON until the nextrelevant digit flash.
6. Change to thedesiredvalue with”Dot”.
7. WhentheScaleshows desiredvalue, savewith NET
8. PressZEROit the Scalenotshowszeroandputtheobject on the Scale.TheScale shows thegross weight.
9. Batching: Press TARE. TheScale showszero and the process begins.
10. When the weight difference on theScale is sameas Batching Weighttheprocess stops.
11. TheScaleshows theBatching Weight. Press NET/GROSS for gross weight.
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