LAUMAS WDESK-LIGHT User manual

ENGLISH ENGLISH ENGLISH ENGLISH
Installation and User Manual
version 1.07
WDESK-LIGHT
2014/30/EU
EN55022:2010 EN61000-6-2:2005 EN61000-6-4:2007

SYMBOLS
Here are the symbols used in the manual to draw the reader's attention:
Caution! Risk of electric shock.
Caution! This operation must be performed by skilled personnel.
Pay particular attention to the following instructions.
Further information.
WARRANTY
24 months from the date of the delivery note. Warranty covers only failures of defective components (due to construction
defects or defects in materials) and includes replacement or repair of the components and related labor costs.
Warranty is automatically forfeited in the event of:
- tampering, deletion, removal of the identification label and/or serial number of the product
- misuse, transformation, alteration, repair of products not carried out by Laumas personnel
Laumas provides a 1-year warranty from the date of the delivery note on defects in material or manufacture of the battery.
GUIDELINES FOR PROPER DISPOSAL
This symbol on the product or packaging indicates that:
- This is electrical/electronic equipment and cannot be disposed of as municipal solid waste, but must be delivered
to a recycling center
- Improper use or disposal can pollute the environment or damage human health
- Non-compliance with these guidelines will be penalized in accordance with the regulations in force in the country
of destination
- It is recommended to dispose of the packing and packaging as required by local regulations

TABLE OF CONTENTS
USER WARNINGS ................................................................................................................... 1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS .1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS................ 1
LOAD CELL INPUT TEST (QUICK ACCESS) .......................................................................... 3
LOAD CELL TESTING............................................................................................................... 3
MAIN SPECIFICATIONS OF THE INSTRUMENT...................................................................4
BUFFER BATTERY.................................................................................................................... 4
AFTER A BLACKOUT ............................................................................................................. 4
TECHNICAL SPECIFICATIONS .............................................................................................. 5
ELECTRICAL CONNECTIONS................................................................................................6
BASIC INFORMATION............................................................................................................... 6
WIRING DIAGRAM..................................................................................................................... 6
TERMINALS LEGEND........................................................................................................................7
KEYS AND SYMBOLS FUNCTIONS.......................................................................................8
MENU MAP ............................................................................................................................10
SETPOINT ................................................................................................................................ 10
SYSTEM PARAMETERS ......................................................................................................... 10
INSTRUMENT COMMISSIONING..........................................................................................11
PROGRAMMING OF SYSTEM PARAMETERS....................................................................12
THEORETICAL CALIBRATION............................................................................................... 12
MAXIMUM CAPACITY......................................................................................................................13
TARE WEIGHT ZERO SETTING......................................................................................................13
ZERO VALUE MANUAL ENTRY......................................................................................................13
REAL CALIBRATION (WITH SAMPLE WEIGHTS) ................................................................ 14
FILTER ON THE WEIGHT ....................................................................................................... 15
ANTI PEAK........................................................................................................................................15
ZERO PARAMETERS.............................................................................................................. 16
RESETTABLE WEIGHT SETTING FOR SMALL WEIGHT CHANGES..........................................16
AUTOMATIC ZERO SETTING AT POWER-ON .............................................................................. 16
ZERO TRACKING.............................................................................................................................16
SETTING UNITS OF MEASURE.............................................................................................. 17
DISPLAY COEFFICIENT ..................................................................................................................17
OUTPUTS AND INPUTS CONFIGURATION .......................................................................... 19
SEMI-AUTOMATIC TARE (NET/GROSS) ............................................................................... 20
PRESET TARE (SUBTRACTIVE TARE DEVICE)................................................................... 21
SEMI-AUTOMATIC ZERO (WEIGHT ZERO-SETTING FOR SMALL VARIATIONS) ............ 21
PEAK ........................................................................................................................................ 22
SERIAL COMMUNICATION SETTING.................................................................................... 22
RS232 SERIAL COMMUNICATION.................................................................................................24
RS485 SERIAL COMMUNICATION.................................................................................................24
DIRECT CONNECTION BETWEEN RS485 AND RS232 WITHOUT CONVERTER ......................24

TEST......................................................................................................................................... 25
ENERGY SAVING .................................................................................................................... 25
DATE AND TIME SETTING ..................................................................................................... 25
INFO MENU.............................................................................................................................. 25
SETPOINT PROGRAMMING.................................................................................................26
PIECE COUNTER ..................................................................................................................27
INCREASING OPERATION ..................................................................................................... 27
DECREASING OPERATION.................................................................................................... 27
DISPLAY AND OPERATION ................................................................................................... 27
ENABLING SETPOINT ............................................................................................................ 28
TOTALIZER............................................................................................................................29
SELECT TOTALIZER OPERATING MODE ............................................................................ 29
DISPLAY AND OPERATION ................................................................................................... 29
ENABLING SETPOINT ............................................................................................................ 31
ALARMS.................................................................................................................................32
PRINTING EXAMPLES .......................................................................................................... 33
RESERVED FOR THE INSTALLER ......................................................................................35
MENU LOCKING...................................................................................................................... 35
MENU UNLOCKING................................................................................................................. 35
TEMPORARY MENU UNLOCKING......................................................................................... 35
DATA DELETION AND PROGRAM SELECTION................................................................... 35
KEYPAD OR DISPLAY LOCKING .......................................................................................... 36
DECLARATION OF CONFORMITY - EU...............................................................................37

- 1 -
USER WARNINGS
RECOMMENDATIONS FOR THE PROPER USE OF WEIGHING INSTRUMENT
- Keep away from heat sources and direct sunlight
- Repair the instrument from rain (except special IP versions)
- Do not wash with water jets (except special IP versions)
- Do not dip in water
- Do not spill liquid on the instrument
- Do not use solvents to clean the instrument
- Do not install in areas subject to explosion hazard (except special Atex versions)
RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS
The terminals indicated on the instrument’s wiring diagram to be connected to earth must
have the same potential as the weighed structure (same earthing pit or earthing system). If
you are unable to ensure this condition, connect with an earthing wire the terminals of the
instrument (including the terminal – SUPPLY) to the weighed structure.
The cell cable must be individually led to its panel input and not share a conduit with other cables;
connect it directly to the instrument terminal strip without breaking its route with support terminal
strips.
Use “RC” filters on the instrument-driven solenoid valve and remote control switch coils.
Avoid inverters in the instrument panel; if inevitable, use special filters for the inverters and separate
them with sheet metal partitions.
The panel installer must provide electric protections for the instruments (fuses, door lock switch
etc.).
It is advisable to leave the equipment always switched on to prevent the formation of condensation.
MAXIMUM CABLE LENGTHS
- RS485: 1000 metres with AWG24, shielded and twisted cables
- RS232: 15 metres for baud rates up to 19200
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS
INSTALLING LOAD CELLS: The load cells must be placed on rigid, stable in-line structures; it
is important to use the mounting modules for load cells to compensate for misalignment of the
support surfaces.
PROTECTION OF THE CELL CABLE: Use water-proof sheaths and joints in order to protect the
cables of the cells.
MECHANICAL RESTRAINTS (pipes, etc.): When pipes are present, we recommend the use of
hoses and flexible couplings with open mouthpieces with rubber protection; in case of hard pipes,
place the pipe support or anchor bracket as far as possible from the weighed structure (at a distance
at least 40 times the diameter of the pipe).

- 2 -
CONNECTING SEVERAL CELLS IN PARALLEL: Connect several cells in parallel by using - if
necessary - a watertight junction box with terminal box. The cell connection extension cables must
be shielded, led individually into their piping or conduit and laid as far as possible from the power
cables (in case of 4-wire connections, use cables with 4x1 mm2minimum cross-section).
WELDING: Avoid welding with the load cells already installed. If this cannot be avoided, place the
welder ground clamp close to the required welding point to prevent sending current through the load
cell body.
WINDY CONDITIONS - KNOCKS - VIBRATIONS: The use of weigh modules is strongly
recommended for all load cells to compensate for misalignment of the support surfaces. The system
designer must ensure that the plant is protected against lateral shifting and tipping relating to:
shocks and vibration; windy conditions; seismic conditions in the installation setting; stability of the
support structure.
EARTHING THE WEIGHED STRUCTURE: By means of a copper wire with suitable cross-section,
connect the cell upper support plate with the lower support plate, then connect all the lower plates to
a single earthing system. Electrostatic charges accumulated because of the product rubbing against
the pipes and the weighed container walls are discharged to the ground without going through or
damaging the load cells. Failure to implement a proper earthing system might not affect the
operation of the weighing system; this, however, does not rule out the possibility that the cells and
connected instrument may become damaged in the future. It is forbidden to ensure earthing system
continuity by using metal parts contained in the weighed structure.
FAILURE TO FOLLOW THE INSTALLATION RECOMMENDATIONS WILL BE CONSIDERED
A MISUSE OF THE EQUIPMENT
OK OK
NO NO
NO
OK

- 3 -
LOAD CELL INPUT TEST (QUICK ACCESS)
From the weight display, press ▲for 3 seconds; the response signal of the load cells is displayed,
expressed in mV with four decimals.
LOAD CELL TESTING
Load cell resistance measurement (use a digital multimeter):
- Disconnect the load cells from the instrument and check that there is no moisture in the cell
junction box caused by condensation or water infiltration. If so, drain the system or replace it if
necessary.
- The value between the positive signal wire and the negative signal wire must be equal or similar
to the one indicated in the load cell data sheet (output resistance).
- The value between the positive excitation wire and the negative excitation wire must be equal or
similar to the one indicated in the load cell data sheet (input resistance).
- The insulation value between the shield and any other cell wire and between any other cell wire
and the body of the load cell must be higher than 20 Mohm.
Load cell voltage measurement (use a digital multimeter):
- Take out the load cell to be tested from underneath the container, or alternatively, lift the
container support.
- Make sure that the excitation of two wires of the load cell connected to the instrument (or
amplifier) is 5 VDC ±3%.
- Measure the response signal between the positive and the negative signal wires by directly
connecting them to the tester, and make sure that it is comprised between 0 and ±0.5 mV.
- Apply load to the cell and make sure that there is a signal increment.
IF ONE OF THE ABOVE CONDITIONS IS NOT MET, PLEASE CONTACT THE TECHNICAL
ASSISTANCE SERVICE.


 3 s

- 4 -
MAIN SPECIFICATIONS OF THE INSTRUMENT
Indicator with 6-wire load cell input installable on table, panel front, wall or column; 6 PG9 cable
glands, IP67 protection rating; 6 digits backlit LCD semi-alphanumeric display (20 mm h),
7 segments; max 46 signalling symbols; 6-key membrane keypad with buzzer, real-time
clock/calendar with buffer battery.
Two serial ports (RS485 and RS232) for connection to: PC/PLC up to 32 instruments (max 99 with
line repeaters) by ASCII Laumas or ModBus R.T.U. protocol, remote display, printer, RD data
recorder.
Switching power supply plug 24 V 450 mA, input 100÷240 VAC, 3 meters long cable (included)
BUFFER BATTERY
The instrument is equipped with an internal battery that allows to keep active the internal clock even
in the event of power failure.
At the first start and after long periods of inactivity, leave the instrument on for at least 12
hours to fully charge the battery.
AFTER A BLACKOUT
After a blackout the instrument DOES NOT come on again automatically, you have to press ON.
To guarantee an automatic restart after a blackout, disable the ON key as follows:
- disconnect power supply and open the instrument removing the eight screws from the front
panel;
- identify flat connectors coming from the keypad on the main board;
- extract the 4-pole connector;
- use the unused jumper inside the instrument to short-circuit the two pins further in compared to
the main board (see picture below);
- connect the 4-pole flat to the two pins still free complying with initial orientation.

- 5 -
TECHNICAL SPECIFICATIONS
POWER SUPPLY and CONSUMPTION (VDC) 12/24 VDC ±10%; 6 W
NO. OF LOAD CELLS IN PARALLEL and SUPPLY max 8 (350 ohm); 5 VDC/120 mA
LINEARITY < 0.01% F.S.
THERMAL DRIFT < 0.0005% F.S./°C
A/D CONVERTER 24 bit (16000000 points)
MAX DIVISIONS
(with measurement range: ±10 mV = sens. 2 mV/V) ±999999
MEASUREMENT RANGE ±39 mV
MAX SENSITIVITY OF USABLE LOAD CELLS ±7 mV/V
MAX CONVERSIONS PER SECOND 300 conversions / second
DISPLAY RANGE ±999999
NO. OF DECIMALS / DISPLAY INCREMENTS 0÷4 / x 1 x 2 x 5 x 10 x 20 x 50 x 100
DIGITAL FILTER / READINGS PER SECOND 0.012÷7 s / 5÷300 Hz
RELAY OUTPUTS N. 2 – max 115 VAC; 150 mA
DIGITAL INPUTS N. 2 - optoisolated 5-24 VDC PNP
SERIAL PORTS RS485, RS232
BAUD RATE 2400, 4800, 9600, 19200, 38400, 115200
HUMIDITY (non condensing) 85%
STORAGE TEMPERATURE -30°C +80°C
WORKING TEMPERATURE -20°C +60°C
RELAY OUTPUTS N. 2 - max 30 VAC, 60 VDC; 150 mA
WORKING TEMPERATURE -20°C +50°C
Equipment to be powered by 12-24 VDC LPS or Class 2 power source.

- 6 -
ELECTRICAL CONNECTIONS
BASIC INFORMATION
- It is recommended that the power supply negative pole be grounded.
- It is possible to supply up to eight 350 ohm load cells or sixteen 700 ohm load cells.
- For 4-wire load cells, make a jumper between EX- and REF- and between EX+ and REF+.
- Connect terminal “– SUPPLY” to the RS485 common of the connected instruments in the event
that these receive alternating current input or that they have an optoisolated RS485.
- In case of an RS485 network with several devices it is recommended to activate the 120 ohm
termination resistance on the two devices located at the ends of the network, as described in
section RS485 SERIAL CONNECTION.
WIRING DIAGRAM
2 outputs: controlled by setpoint values or by remote device via protocol.
2 inputs: settable to have the following functions: NET/GROSS WEIGHT, SEMI-AUTOMATIC ZERO,
PEAK, PRINT or REMOTE CONTROL (see section OUTPUTS AND INPUTS CONFIGURATION).
1 2 3 4 5 6 7 8 9 101112131415161718192021 123456
EXCIT. -
EXCIT. +
SIGNAL -
SIGNAL +
4-WIRE load cell
connection
12-24
VDC
supply
RS485
-
+
SUPPLY +
SUPPLY -
TXD
RXD
OUT 1
OUT 2
OUT COMMON
IN 1
IN 2
EXCITATION -
REF./SENSE +
IN COMMON
EXCITATION +
REF./SENSE -
SIGNAL -
SIGNAL +
LOAD CELLS
6-WIRE load cell
connection
INPUTS
supply
5-24 VDC
OUTPUTS
max 115 VAC
150 mA
RS232
+-

- 7 -
TERMINALS LEGEND
Terminal Signal Terminal
Signal
1 -LOAD CELL EXCITATION (-Exc)
LOAD CELL SHIELD 12
2 +LOAD CELL EXCITATION (+Exc) 13
3 +LOAD CELL REF/SENSE 14 INPUT No. 1
(+VDC min 5 V max 24 V)
4 -LOAD CELL REF/SENSE 15 INPUT No. 2
(+VDC min 5 V max 24 V)
5 -LOAD CELL SIGNAL (-Sig) 16 INPUT COMMON (-VDC 0 V)
6 +LOAD CELL SIGNAL (+Sig) 17 OUTPUT No. 1
7 RS232: TXD 18 OUTPUT No. 2
8 RS232: RXD 19 OUTPUT COMMON
9 RS485: - 20 + SUPPLY (12/24 VDC)
10 RS485: + 21 - SUPPLY (12/24 VDC)
RS232, RS485: SHIELD, GND
11
To access the terminal strip you need to remove the front panel of the instrument
unscrewing the eight screws.

- 8 -
KEYS AND SYMBOLS FUNCTIONS
KEYS
KEY Short press
Long press
(3 s) Into menus
Power-on Power-off
Semi-automatic zero Tare
resetting
Cancel or return to previous
menu
Gross Net Net Gross Select figure to be modified
or go to previous menu item.
Select operating mode (base,
piece counter, totalizer)
Print actual weight mV load cell
test
Modify selected figure or go
to next menu item.
Setting setpoint and hysteresis Confirm or enter in submenu
+
Setting general parameters
(press immediately
followed by )
+
Setting preset tare (press
immediately followed by )

- 9 -
SYMBOLS
Symbol Function
LED POWER power supply available
1 preset tare enabled
2 gross weight
3 net weight (semi-automatic tare or preset tare)
4 stability
5 zero (deviation from zero not more than ±0.25 divisions)
6 peak function enabled
7 not used
8 value displayed is not a weight
9 not used
10 not used
11 active coefficient
12 not used
13 unit of measure reading
14 the number displayed indicates that the corresponding input is closed
15 the number displayed indicates that the corresponding output is closed
16 not used
Into menus symbol 8 is on to indicate that it is not displaying a weight.
678910
11
16 15 14
12
4
13
5
3
2
1

- 10 -
MENU MAP
Into menus changes are applied right after pressing the ENTER key (no further confirmation is
required).
SETPOINT
SYSTEM PARAMETERS
  









 + 

 
















3 s
 



3 s
 
 
 + 















 





 


- 11 -
INSTRUMENT COMMISSIONING
To turn on the instrument press ON. To turn it off press OFF for about 3 seconds: when 
appears release the key.
After a blackout the instrument DOES NOT come on again automatically, you have to press ON.
To guarantee an automatic restart after a blackout, disable the ON key (see section AFTER A
BLACKOUT).
Upon switch-on, the display shows in sequence:
-  → (ONLY in case of approved program);
- instrument model (e.g.: );
-  followed by the software code (e.g.: );
- program type:  (base);
- followed by the software version (e.g.: );
-  followed by the hardware code (e.g.: );
- serial number (e.g.: );
Check that the display shows the weight and that when loading the load cells there is an increase in
weight. If there is not check and verify the connections and correct positioning of the load cells.
- If the instrument has already been theoretical CALIBRATED (plant system identification tag
present on the instrument and on the cover: load cell’s rated data already entered):
▫ Reset to zero (see section TARE WEIGHT ZERO SETTING)
▫ Check the calibration with sample weights and correct the indicated weight if necessary (see
section REAL CALIBRATION (WITH SAMPLE WEIGHTS)).
- If the instrument HAS NOT BEEN CALIBRATED (missing plant system identification tag)
proceed with calibration:
▫ If load cells data are unknown, follow the procedure in section REAL CALIBRATION (WITH
SAMPLE WEIGHTS)
▫ Enter the rated data of load cells following the procedure given in section THEORETICAL
CALIBRATION
▫ Reset to zero (see section TARE WEIGHT ZERO SETTING)
▫ Check the calibration with sample weights and correct the indicated weight if necessary (see
section REAL CALIBRATION (WITH SAMPLE WEIGHTS)).
- If you use serial communication, set the related parameters (see section SERIAL
COMMUNICATION SETTING).
- If setpoint are used, set the required weight values and the relevant parameters (see sections
SETPOINT PROGRAMMING and OUTPUTS AND INPUTS CONFIGURATION).
- Set instrument’s clock with current date and time (see section DATE AND TIME SETTING)

- 12 -
PROGRAMMING OF SYSTEM PARAMETERS
From the weight display, press simultaneously keys MENU and ESC to access the parameter setting.
MENU/ENTER: to enter a menu/confirm the data entry.
▲: to modify the displayed figure or menu item.
◄: to select a new figure or modify the displayed menu item.
ESC: to cancel and return to the previous menu.
THEORETICAL CALIBRATION
This function allows the load cell rated values to be set.
To perform the theoretical calibration set the following parameters in sequence:
-  (default: ): The system full scale is given by one cell capacity multiplied by the
number of cells used. Example: 4 cells of 1000 kg FULL SCALE = 1000 x 4 = 4000.
The instrument is supplied with a theoretical full scale value  corresponding to 10000. To
restore factory values, set 0 as full scale.
-  (default: 2.00000 mV/V): Sensitivity is a load cell rated parameter expressed in mV/V.
Set the average sensitivity value indicated on the load cells. It’s possible to set a value between
0.50000 and 7.00000 mV/V. Example of 4-cell system with sensitivity: 2.00100, 2.00150,
2.00200, 2.00250; enter 2.00175, calculated as (2.00100 + 2.00150 + 2.00200 + 2.00250) / 4.
- :The division (resolution) is the minimum weight increment value which can be
displayed. It is automatically calculated by the system according to the performed calibration, so
that it is equal to 1/10000 of full scale. It can be changed and be variable between 0.0001 and
100 with x1 x2 x5 x10 increments.
- By modifying the theoretical full scale, the sensitivity or divisions, the real calibration is
cancelled and the theoretical calibration only is considered valid.
- If the theoretical full scale and the recalculated full scale in real calibration (see section
REAL CALIBRATION (WITH SAMPLE WEIGHTS)) are equal, this means that the
calibration currently in use is theoretical; if they are different, the calibration in use is the
real calibration based on sample weights.
- By modifying the theoretical full scale, the sensitivity or divisions, the system’s
parameters containing a weight value will be set to default values (setpoint, hysteresis,
etc.).
 +    

- 13 -
MAXIMUM CAPACITY
: Maximum displayable weight (from 0 to max full scale; default: 0). When the weight exceeds
this value by 9 divisions, the display shows . To disable this function, set 0.
TARE WEIGHT ZERO SETTING
This menu may also be accessed directly from the weight display, holding down the
key for 3 seconds.
Perform this procedure after having set the THEORETICAL CALIBRATION data.
Use this function to set to zero the weight of the empty system after commissioning and then later
on to compensate zero variations due to the presence of product residues.
Procedure:
- Confirm the message  by pressing ENTER .
- The weight value to be set to zero is displayed. In this phase all of the symbols are flashing.
- Confirming once again, the weight is set to zero (the value is stored to the permanent memory).
- Press ▲to display the value of the total weight reset by the instrument, given by the sum of all
of the previous zero settings.
ZERO VALUE MANUAL ENTRY
WARNING: Perform this procedure only if it’s not possible to reset the weighed structure tare, for
example because it contains product that can not be unloaded.
Set in this parameter the estimated zero value (from 0 to max 999999; default: 0).
0
 +   
 +   
 +   

- 14 -
REAL CALIBRATION (WITH SAMPLE WEIGHTS)
After having performed the THEORETICAL CALIBRATION and TARE WEIGHT ZERO
SETTING, this function allows correct calibration to be done using sample weights of known
value and, if necessary, any deviations of the indicated value from the correct value to be
corrected.
Load onto the weighing system a sample weight, which must be at least 50% of the maximum
quantity to be weighed.
By confirming the message  the flashing value of the weight currently on the system is
displayed. In this phase all of the symbols are off. Adjust the value on display by using the arrow
keys if necessary. After confirming, the new set weight will appear with all the symbols flashing.
After an additional confirmation, the message  will be restored and by repeatedly pressing
the key ESC the weight will once again be displayed.
Example: for a system of maximum capacity 1000 kg and 1 kg division, two sample weights are
available, one of 500 kg and the other one of 300 kg. Load both weights onto the system and correct
the indicated weight to 800. Now remove the 300 kg weight, the system must show 500; remove the
500 kg weight too; the system must read zero. If this does not happen, it means that there is a
mechanical problem affecting the system linearity.
WARNING: identify and correct any mechanical problems before repeating the procedure.
- If theoretical full scale and recalculated full scale in real calibration are equal, it means
that the theoretical calibration is currently in use; otherwise, the real calibration based on
sample weights is in use.
- If the correction made changes the previous full scale for more than 20%, all the
parameters with settable weight values are reset to default values.
LINEARISATION OPTION ON MAX 5 POINTS:
It is possible to perform a linearisation of the weight repeating the above-described procedure
up to a maximum of five points, using five different sample weights. The procedure ends by
pressing the ESC button or after entering the fifth value; at this point it will no longer be possible
to change the calibration value, but only to perform a new real calibration. To perform a new
calibration, should return to the weight display and then re-entering into the calibration menu.
By pressing ▲after having confirmed the sample weight that has been set, the full scale appears,
recalculated according to the value of the maximum sample weight entered and making reference to
the cell sensitivity set in the theoretical calibration ().
 +   

- 15 -
FILTER ON THE WEIGHT
Setting this parameter allows a stable weight display to be obtained.
To increase the effect (weight more stable) increase the value (from 0 to 9, default 4).
As seen in the diagram:
- By confirming the  message, the currently programmed filter value is displayed.
- By changing and confirming the value, the weight is displayed and it will be possible to
experimentally verify its stability.
- If stability is not satisfactory, confirming brings back the message  and the filter may be
modified again until an optimum result is achieved.
The filter enables to stabilise a weight as long as its variations are smaller than the corresponding
“response time”. It is necessary to set this filter according to the type of application and to the full
scale value set.
FILTER VALUE Response times
[ms]
Display and serial port refresh
frequency
[Hz]
0 12 300
1 150 100
2 260 50
3 425 25
4 (default) 850 12.5
5 1700 12.5
6 2500 12.5
7 4000 10
8 6000 10
9 7000 5
ANTI PEAK
When the weight is stable, the anti peak filter removes any sudden disturbances with a maximum duration
of 1 second. Confirm the filter on the weight with ENTER and select one of the following options:
- : anti peak filter enabled (default);
- : anti peak filter disabled.
+
  

- 16 -
ZERO PARAMETERS
RESETTABLE WEIGHT SETTING FOR SMALL WEIGHT CHANGES
 (from 0 to max full scale; default: 300; considered decimals: 300 – 30.0 – 3.00 – 0.300): this
parameter indicates the maximum weight value resettable by external contact, keypad or serial
protocol.
AUTOMATIC ZERO SETTING AT POWER-ON
 (from 0 to max 20% of full scale; default: 0): If at switch-on the weight value is lower than
the value set in this parameter and does not exceed the  value, the weight is reset. To
disable this function, set 0.
ZERO TRACKING
 (from 1 to 5, default: ): When the weight value is stable and, after a second, it
deviates from zero by a figure in divisions smaller or equal to the figure in divisions set in this
parameter, the weight is set to zero. To disable this function, set .
Example: if the parameter  is set to 5 and  is set to 2, the weight will be
automatically set to zero for variations smaller than or equal to 10 ( x ).
+
  