Gram K3 SERIES User manual

SERIE
K3 / K3P / K3i / K3i Printer
MK3 / MK3 Printer
S3/ S5i / S7i / TCamel 2T
USER MANUAL

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INDEX
Warning________________________________________________________________________________ 3!
Features _______________________________________________________________________________ 3!
Options ________________________________________________________________________________ 4!
Packaging ______________________________________________________________________________ 4!
Features of the indicator __________________________________________________________________ 4!
Load cell connection __________________________________________________________________ 4!
User interface _______________________________________________________________________ 5!
Serial communications ________________________________________________________________ 5!
Input/output options __________________________________________________________________ 5!
Power supply ________________________________________________________________________ 5!
Operating conditions and mechanical data ________________________________________________ 5!
Relay card __________________________________________________________________________ 6!
Thermal printer (k3ip and mk3p) ________________________________________________________ 6!
Display description_______________________________________________________________________ 6!
Touchpad description_____________________________________________________________________ 6!
Connections ____________________________________________________________________________ 7!
Platform 1 connection. ________________________________________________________________ 8!
Rs-232 _____________________________________________________________________________ 8!
Assembly ______________________________________________________________________________ 9!
Start-up _______________________________________________________________________________ 9!
Device reset ___________________________________________________________________________ 10!
Using the tare __________________________________________________________________________ 10!
Fixed tare __________________________________________________________________________ 10!
Weight sum total _______________________________________________________________________ 10!
Internal test ________________________________________________________________________ 12!
Blocking the touchpad________________________________________________________________ 12!
Advanced functions and set up ____________________________________________________________ 13!
Manual function _____________________________________________________________________ 15!
Scanner function ____________________________________________________________________ 16!
Memorising weight limits and response mode ____________________________________________ 17!
Activating the limit (+/-) function _______________________________________________________ 19!
Sampling __________________________________________________________________________ 20!
Counting___________________________________________________________________________ 20!
Individual weight memory (piece-counting) _______________________________________________ 21!
Using the tare memory _______________________________________________________________ 23!
Activating this function _______________________________________________________________ 25!
Using the function ___________________________________________________________________ 25!
Printing operation ___________________________________________________________________ 38!
Warranty ______________________________________________________________________________ 43!

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ENGLISH
WARNING
•Unplug the power supply before installing or disassembling.
•Before using the device, check that the voltage printed on the features label matches the one of the electricity
network that will be used. If they do not match, do not plug the device into the electrical network.
•Before using the device, make sure that the power supply cord is not obstructed or trapped. The cord must be
free of any tension.
•These scales must only be used under the environmental conditions specified in this user manual.
•This device must not be used in areas where there is risk of explosion or in unstable conditions.
•Do not place the scales close to sources of heat or under direct solar radiation.
•Keep the scales away from any other sources of electromagnetic radiation. Its influence can affect the reading
accuracy of the indicator.
•When the low battery indicator appears, the battery must be recharged as soon as possible. A battery that is
left uncharged for long periods of time deteriorates and stops working.
•When changing the battery, make sure that the (+) and (-) terminals are connected to the corresponding ends.
FEATURES
•Backlit liquid crystal green display in selectable colour.
•Menu with activated function indicator by colour.
•Cross-shaped touchpad for intuitive use of the menu.
•4 weight units.
•IP-67 protection against liquids and dust.
•Cell, power supply and optional watertight connectors.
•Reversible face. It can be places on a table or mounted on the wall without any other accessories (except
model K3i which needs the wall mount).
•Normal tare or set tare.
•Memory of 20 numerical tares.
•Memory of 20 weight limits to control of +/-.
•Memory of 100 items for the piece-counting function.
•3-line header printing with 4 selectable font sizes.

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•2-line ticket footer printing with 4 selectable font sizes.
•Memorization of item code to print 6 alphanumeric characters.
•Batch number to be printed on the ticket.
•Printing in Spanish, English, French and German.
•Printing of the total on the ticket (selectable).
•10 step linear calibration and selectable gravity setting.
•High/OK/low checking function with visual indication in 3 colours and sound indication.
•Network adapter with a 3.5m cable.
•Automatic disconnection (adjustable).
•Rechargeable battery (optional in K3T Series).
OPTIONS
•RS-232 PC and printer double data outlet (optional in K3T Series).
•External tare input (pedal or switch).
•Printing out date and time on tickets (optional).
PACKAGING
•1 indicator.
•1 weighing platform (if the full device package is purchased)
•1 column (optional).
•1 network adapter 220V/9V.
•1 user manual.
•Rechargeable battery (optional in K3T Series).
FEATURES OF THE INDICATOR
Load cell connection
Maximum input signal
±4 mV/V
Maximum input voltage
-0.3 a 5.3 V
Internal resolution
20-bit converter, 1000000 accounts
(100000 external)
Measuring frequency
10 samples per second

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Linearity error
≤0.01% of the measuring range
Excitation voltage
5 Vdc
Minimum impedance of the
transducer
· Without relay card: 31,666 Ω(12
cells x 380 Ω)
· With relay card: 47.5 Ω(8 cells x 380
Ω)
Cable length
30 m/mm2 max. (6 wires)
User interface
Main indicator
6 LCD digits, 25.4 mm high and
weight limit display
Backlit with a 3-led panel back light
(RGB)
Touchpad keyboard
11 keys
Sound warning
Mini intermittent sound piezoelectric
tweeter (2300±300 Hz y 85 dB)
Serial communications
Tx/Rx Port: (Port 1)
Bi-directional RS-232C
Tx/Rx Port: (Port 2)
Bi-directional RS-232C
Transmission rate
1200, 2400, 4800, 9600, 19200, 38400,
57600, 115200
No. of bits and parity
8 bits, no parity, 1 bit stop
Input/output options
Relay output
Relay card (3 outputs) for external
dosing/indication ("traffic light" type)
used for the weight control function.
Tare pedal
Pedal used for taring
RTC board
RTC for date and time (for printer
option)
Power supply
Connection to the electrical network
Through a 12V power supply; 1A
Battery
6V-5AH;
Service time 25/60 hours, depending
on use.
Operating conditions and mechanical data
Operating temperature range
+5ºC/+35ºC
Size (mm)
220 x 180 x 83
Weight (kg)
1.5 (including battery)
Assembly
Countertop
Optional: Tilting wall/column mount
Watertightness
IP-65 (K3); IP-67 (K3i)

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Relay card
Maximum voltage
24 VDC/24 VAC
Maximum intensity
10 A
Relay life
100000 operations at nominal load
Thermal printer (K3iP and MK3P)
Printer life
6000000 printed lines
Resolution
8 points/mm
Printing speed
30 mm/sec
Type of paper
Thermal paper roll (57mm wide, 30
mm ø)
Printing width
48 mm
Printing sizes
6x8 points, 8x16 points, 12x24 points
DISPLAY DESCRIPTION
TOUCHPAD DESCRIPTION
Power on/Power off. By pressing this button the indicator turns on. When the indicator is on,
press this button for approximately one second to turn it off.
Weight unit change button. By pressing this button, you can change the weight unit. In menu
mode, it will work as an escape button and return to normal mode (Escape). By keeping this button
pressed for over one second it starts the piece-counting mode.
Gross/Net button. When the tare is used, pressing this button will show the total weight.
Pressing it again will show the net weight. By keeping it pressed for over a second it automatically
selects the “Weight limit” mode.
PLU button Press this button to enter the menu and to access previously stored values of weight
limits, piece counters, tares and other useful functions. By keeping this button pressed for over a
second, it enters the factory mode and asks for a passwords (only accessible to authorised users).

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Zero button. It sets the scale to zero, correcting possible deviations. The platform must always
be empty to perform this function. By pressing this button for over a second, it shows the display
test, capacity, division and software version.
Tare button. Pressing this button once will subtract the weight of any container or box located on
the platform, until the container or box is removed and the tare button is pressed again. Keeping
this button pressed will give you access to the tare memory.
MR and left arrow. By pressing this button on the main screen, it closes and sends the
accumulated ticket data if this option is set up. It shows the total accumulated weight. In menu
mode, it confirms the selected adjustment value and it returns to the previous menu.
M+ and right arrow. Press this arrow to have the device memorise the value shown on the
display. It starts the accumulated ticked (if it was not already started) and sends the ticket data to
the printer if it is set up. For a few seconds, it also shows the accumulated total. In menu mode, it
shows the next function.
Clock and top arrow. By pressing it, it shows the accumulated value. If you press it for over a
second it shows the scheduled date and time. In menu mode, it increases the value (digit) of the
display.
MC and bottom arrow. Press this arrow to erase the stored weighing memory. In menu mode, it
decreases the value (digit) of the display.
Enter. Pressing this button on the main screen, it sends current weight data to the printer (simple
mode) if it is set up. By pressing this button for 5 seconds, it will activate the block/unblock function
of the touchpad. In menu mode, it confirms the selection/modification made.
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CONNECTIONS
AC/DC: Power supply connector.
Option: Free for options.
RS-232: Double RS-232C data and tare output (optional for K3T).
C1: Platform 1 connection.

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Platform 1 connection.
Multipin mobile connector.
Male chassis socket P700 (7-pin).
RS-232
Case 1
Multipin mobile connector.
Male chassis socket P700 (8-pines).
4
RxD
5
TxD
6
GND
Caso 2
DB9 male connector
Load Cell A
Load Cell B
PIN 1
SIG -
Blue
White
PIN 2
SIG +
Brown
Green
PIN 3
SHIELD
Shield
Shield
PIN 4
EXC -
Black
Black
PIN 5
SENSE -
-
Blue
PIN 6
EXC +
Red
Red
PIN 7
SENSE +
-
Yellow
2
RxD
3
TxD
5
GND

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ASSEMBLY
Place the platform on a flat surface without any objects that might interfere in the weighing process.
Unblock the platform by removing or loosening the blocking screws, as indicated in the instructions of the attached
unblocking guide.
Insert the cell cable through the column until it comes out of the column's top opening.
Place the column (optional) inside the column support and adjust the screws to block it and fix it.
Place the indicator on the top part of the column, making sure that the support fixing screws are in place.
Insert the power cable to connectionC1, and the plug it into the AC/DC power supply connector. Do not use other
cables besides the included one as it may damage the indicator’s inner circuits.
Plug the power supply cable to a 110V or 220V electrical network outlet (it supports both voltage inputs).
By pressing , the indicator will start the initialization process and, once it has finished (it takes a few
seconds), it will show a zero value.
The scales are now ready to be used. Please read this manual carefully before using the scales.
START-UP
Turn the scales on by pressing the button.
The display on the scales will show a moving circle for a few seconds. After this, the display will flicker and show the
zero value.
If an object is now placed on the platform, the display will show the object’s weight.
Press the button to select the weighing unit you want to use ("kg or g" are shown by default, depending on
the device's configuration".
Place the object you wish to weight on the platform. The display will show the object’s weight. This value must be read
when the “stability” symbol is on, in the top left corner of the display.

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DEVICE RESET
If the platform is empty and the display is not showing a value of zero, press to reset it.
USING THE TARE
Fixed tare
Place a container on the platform. The indicator will show its weight. After pressing the button, the scale will
now show the “0” value, subtracting the container’s weight. The tare indicator !T"now shows on the left side of the
display.
Now, the indicator shows the net weight of the objects placed inside the container.
You can find out the total value (gross weight) by pressing . To see the net weight again, press the
button again.
If you remove all the weight from the weighing platform, the indicator will show a negative tared weight.
To clear the tare value, remove all weight from the platform and press the button.
Note: If there is a certain instability or temperature fluctuations, the indicator may not show 0. Press the
button to correct it.
Maximum tare range: The tare value cannot exceed the scale's maximum capacity. The usable available capacity
of the platform, once the tare has been performed, is calculated by subtracting the current tare weight from the
maximum capacity.
Usable capacity = max.cap - tare.
WEIGHT SUM TOTAL
This function sums up all individual weighing operations that have been accumulated and shows the total
accumulated value.
To use this function, place the object you want to weigh, and when the display shows the stable weight value (stability

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circle must be on), press the button. The weight value will now be added (when the printer is plugged in it will
print the header as well as the first weight value, if this option is set up).
To add the weight of another object, the previous one must be removed. Make sure the display has returned to zero
and the stability symbol is on. Only then can the operation be repeated.
Press the button again and the second weighing value will also be added (it will be printed on a different
ticket line if the printer is turned on and set up). For a few seconds, they display will also show the accumulated total.
More weights can be added by following this method.
To check the accumulated value without printing, press and the display will show the accumulated total.
To get the sum total value, closing the sum accumulation of weights, press the button and the screen will
display the total value (when the printer is connected and set up, it will print the bottom of the ticket with the footer, if
it’s enabled)
You can keep adding weighing values, and checking the total value. To erase the memory, press until the
message “rEsEt”appears on the display.

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Internal test
This function turns on all the icons on the display to check their status. After this, it shows the capacity, the resolution
and the device software version.
To perform this test, from the main screen (weighing mode), press the button for two seconds. Once the
visualisation has finished, it will return to the regular working mode.
Blocking the touchpad
You can block all buttons, except for , and which are used regularly. This way the user
doesn’t have easy access to the configuration menu and cannot modify the scales' settings by accident.
To block the touchpad, press the button for 5 seconds until the display shows the message “Loch”. Now,
only buttons , and will be active.
To activate the touchpad again, press the button for 5 seconds until the display shows the “unLoch”
message. Now, the touchpad is active again.

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ADVANCED FUNCTIONS AND SET UP
To access the functions set up menu, press the button briefly. The message “n ItEN”will appear.
This indicates that you have entered the functions set up menu. It has 18 different options that include several
functions and settings of the indicator.To scroll through the menu, submenu and data editing, follow these

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instructions:
To scroll forward through the menu, press .
To scroll backwards through the menu, press .
To increase the value of a specific digit or option, use the button.
To decrease the value of a specific digit or option, use the button.
To enter the different options or validate changes made, press .
To exit the menu or different options, use the button.
This menu contains the following options:
n ItEN: Item no. that will be printed and item code editing.
n Lot: Batch number.
Plupro: Designation and storage of weight limits.
Clupro: Selection of the memory slot for piece-counting function.
tlupro: Designation and storage of preset tare weights.
hold: Weight maintenance function on screen.
Aut-t: Auto tare function.
FiltEr: Selecting different weight filters.
bL-SEt: Selecting backlight activation.
bEEp: Sound on / off.
Auto-0: Auto power off of the device.
uArt: Setting of standard communication parameters.
prnfrn: Editing the ticket format for printing.
iCount: Visualisation of internal device counts.
rtc: Setting of date and time.
Color: Selecting the colour palette of the display light.
unit: Activation / deactivation of measurement units.
prnNod: Printer model selection.
PRODUCT CODE - n ItEN
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Manual function
This function is used to memorise a product code. It must have a maximum of 6 alphanumeric characters. There is a
maximum of a 100 item codes that can be memorised.
Press the button. The display will show the “n ItEN” message. Press the button.
The three digits to the right correspond to the memory slot of each code from 1 to 100. To memorise one of them, use
the and buttons to select each digit, and buttons and to move the cursor
left or right. This way you can select a memory slot, for example, number 1: “001”.
Press the button. This will show a flashing cursor on the left.
The first character is highlighted with a flashing underscore. Using and you can change it
for the suitable one, according to the following table and in this order:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
1234567890,’.:-_@
You can enter lower and upper case letters, numbers and symbols. The battery symbol now indicates the letter type
according to the following order:
█numbers and symbols
██lower case letters
███upper case letters
To change the letter case, press the button when editing (upper and lower case letters are visualised in the
same way. To figure out what case it is, see the indicator in the battery bars).
To scroll left or right, use the and buttons.
Follow the instructions above to edit all characters. Then press to confirm the item code.
To exit the menu and return to the weighing mode, press .

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When in regular weighing mode, we can now upload the code of any of the 100 memorised items. Press the
button and then immediately press . Now (following the procedure above) we can choose the code of the
required item and it will stay programmed. When we have, a printer connected to the data output, and the printing
parameters are correctly set up, we will get a ticket with the product code that we have at the time.
Scanner function
This device allows uploading an item code (Item) through a scanner with a RS232C output, connected to the optional
COM2 data output/input.
This is a simple function. Once the scanner is connected to the COM2 port, proceed to scan the bar code of the
product. The indicator will now memorise the last 6 digits of the code.
The code will be printed along with the weight on the same printing line. To change, scan another code and the
indicator will always memorise the last entered code.
Batch number - n lot
This function allows you to edit the batch number that will be printed on the ticket, if this ticked option is enabled.
To access this function, when on the main screen (weighing mode), press band scroll through the menu by
pressing until “n Lot” shows on the display.
We enter this option by pressing .
A 6-digit number will show. It can be modified to insert the desired value, which must be between 1 and 999999.
Validate by pressing the button.
To exit the menu and return to the weighing mode, press .

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Hi/lo Weight control – PluPro
Weight limit function helps to indicate if a weight is within a particular range, transmitting a visual signal through the
colours on the display and the bottom bars of the display with the option of also sending out a sound signal through
the indicator.
The indicator shows a bar with a negative left side and a positive right side. The indication of limits through the
lighting of the display can be set up in this menu, as well as the type of sound signal that will be sent out.
This function can be used with our optional relay card for the connection of external warning or control elements.
The indicator has 20 memory slots for this function.
Memorising weight limits and response mode
1. Press and search for the “PLuPro” option in the menu. Press the button to confirm. The
display will show ‘PLU ,,’, where ‘XX’ is the memory slot for the limits function.
2. To access the required memory slot, use the and cursors to increase or decrease
the position until you find the desired one.
3. Confirm by pressing .
4. It will show ‘tAr’ for a moment and then it will immediately show ‘000000’ where the nominal value must be

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entered by using and cursors to increase or decrease the position until you find
the desired one, and and to scroll to the left or the right. Press to confirm.
5. Now it will show ‘HI’ for a moment and then it will immediately show ‘000000’ where the maximum limit
must be entered by using the same method as in the previous step. Confirm by pressing .
6. Lastly, it shows ‘Lo’ for a moment and then it will immediately show ‘000000’ where the minimum limit must
be entered. Confirm by pressing .
7. You can now choose the warning or indicator mode. The display will show ‘btyPE,’, where ‘X’ can be:
1.Sound warning when the weight is outside the set limits.
2.Sound warning when the weight is inside the set limits.
Use the and cursors to select the desired value and the button to
confirm.
8. The display will show ‘bNodEX’, where ‘X’ can be:
1.No sound.
2.One beep.
3.Continuous beep.
Use the and cursors to select the desired value and the button to
confirm.
9. Lastly, it shows ‘cNodEX’ where you can set the colours to be used for the signalling of limits. In this case ‘X’
can be:
0.Red and green are used.
1.Yellow, red and green are used.
Use the and cursors to select the desired value and the button to
confirm.
10. Exit the menu by pressing .

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Activating the Limit (+/-) function
1. Keep the button pressed until it shows “Hi-LoX”, where ‘X’ indicates what mode the function is in.
These can be:
0.Disabled.
1.Limits with sound and light indication.
2.Limits with light indication and automatic tare.
2. Press to confirm. The display will show “PLU XX” where XX is the memory slot.
3. Select one of the slots using and
4. Confirm the selection by pressing and press to exit if you wish to use the previously
programmed settings. If you need to edit any of the parameters of the limit function, you can access them by
pressing the button. Once the limit function has been set up, “PLU XX”will appear on the screen
once again. Press the button to exit the settings.
5. Place the object on the platform. The indicator will illuminate a part of the bottom bar (and the display colour
will be green, yellow or red according to the selected option), depending on the weight value and the
memorised limits. The (+) or (-) symbol will also appear. If the weight is within the selected limits, it will light
the central bar value and the corresponding colour.

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Piece-counting function – CluPro
This mode is used to count pieces of a similar weight. After carrying out a sample weighing, the indicator will
memorise the individual weight of the pieces. Then it will display the total number of pieces placed on the platform.
Sampling
To carry out the sample weighing, the scales must show the 0 value and the platform must be empty. Press and hold
the button for more than one second until the display shows “10” or another flashing value.
This is the number of pieces you can place on the platform to do the sampling. If the pieces are small, it’s
recommended you put more than 10 pieces in order to increase the device’s precision. To do this press
to increase the sampling value up to 20, 30, 50 or 100. To reduce it, press the button.
Once the required value is selected, count the number of pieces indicated on the display, add them to the platform and
press the button. The display will stop flashing and show the sampling value.
Counting
Place the pieces you want to count on the weighing platform (they should have the same individual weight as the
previous sampling). You can place the pieces inside a container if its tare is already set up (check the Using the Tare
section).
The screen will show the total number of pieces.
To return to weighing mode using your standard weighing unit press .
If you want to return to the piece-counting function, and count pieces of the same weight used earlier, press the