Vetra Skalapp 305 User manual

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Updated 01.12.2022
Skalapp – Operating Manual
Skalapp – User’s Manual
Due to continuous development activities, this manual may not fully correspond to the current
appearance of the application and its range of functions.
Manufacturer:
VETRA International s.r.o.
Pod Korabem 727
345 06 KDYNE
Czech Republic
Contact:
[phone]
[email protected]
www.vetrainternational.cz

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Skalapp – Operating Manual
Contents
Using the manual ..................................................................................................................................................................3
Scope of installation............................................................................................................................................................3
Description of the installation.........................................................................................................................................4
Intended use of the scale..............................................................................................................................................5
Safety instructions...........................................................................................................................................................5
Equipment disposal.........................................................................................................................................................5
Technical Data ...................................................................................................................................................................6
Metrological characteristics........................................................................................................................................6
Switching tablet on/off......................................................................................................................................................7
Charging the tablet ..........................................................................................................................................................7
Launching the scale interface and logging in ...........................................................................................................7
Zeroing.......................................................................................................................................................................................8
Weighing page........................................................................................................................................................................9
Loading....................................................................................................................................................................................10
Backweighing.........................................................................................................................................................................11
Selection of basic data......................................................................................................................................................12
Quick selection settings...............................................................................................................................................12
Completing the weighing operation............................................................................................................................13
Standby mode.......................................................................................................................................................................13
Working with multiple attachments...........................................................................................................................14
Target weight ....................................................................................................................................................................... 15
Using Target weight ...................................................................................................................................................... 15
Summary document ..........................................................................................................................................................16
Scale interface menu......................................................................................................................................................... 17
Scale interface settings ............................................................................................................................................... 17
Weighing data.................................................................................................................................................................24
Termination of work with the scale........................................................................................................................... 25
Loading example ................................................................................................................................................................ 26
Error messages and troubleshooting .......................................................................................................................28
The tablet does not turn on ......................................................................................................................................28
Scale disconnected .......................................................................................................................................................28
Pressure too high / Sensor error............................................................................................................................28

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Skalapp – Operating Manual
Using the manual
Read this entire manual before operating the scale and keep the instructions in an easily accessible
location. If you misplace it, please request a new one from us.
Ensure these instructions are available to all persons using the scale. The scale operator is
responsible for training all personnel who will use the scale. Training should strictly follow these
instructions to ensure proper and safe operation.
Scope of installation
Skalapp Tablet BaseBoard Computing Unit
Optional Tilt Sensor 2x SPS 500 Pressure Sensors
Bucket Position Sensor (O1) Boom Position Sensor (K2)
•Kit to mount pressure sensors
•Cables to connect bucket and boom position sensors
•Cables to connect tablet
•
User’s Manual

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Skalapp – Operating Manual
Description of the installation
The scale consists of two
pressure sensors that connect to
the lifting cylinder for measuring
pressure above and below the
piston rod.
Bucket and boom position
sensors
check if the bucket is
closed, as well as determine the
weighing position and lifting
speed.
The optional
tilt sensor
guarantees that weighing is
carried out under approved
conditions.
The BaseBoard computing unit
collects sensor data to
accurately compute the weight
of the bucket load. The resulting data is then sent to the Skalapp tablet for display of the calculated
weight, as well as configuration of scale settings via the scale interface.
Skalapp
tablet
BaseBoard
128 129
Bucket
sensor
O1
Boom
sensor
K2
24V
Tilt
sensor
Pressure sensors
USB 5V
CAN BUS

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Skalapp – Operating Manual
Intended use of the scale
Determine the weight of bulk material on vehicles with hydraulic lifting mechanisms (e. g.,
wheel loaders or forklifts).
Important points to ensure scale accuracy
Scale will not function correctly if material sticks to the loading bucket. It is therefore
recommended to clean the loading bucket after each load to ensure accurate weighing.
Weighing can be successfully carried out while machine is moving, but only during a
smooth and bump-free ride
Changes to the lifting boom, lifting cylinder, location of the position sensors, or attachment
affect the scale accuracy and require immediate recalibration
When weighing small amounts of material, compared to the machine's total loading
capacity, deviations may be too large for the weight to be calculated accurately
Safety instructions
Scale should only be used for its intended purpose
Scale is subject to the same safety rules as the machine on which it is installed. Do not
tamper with any scale components during machine operation, except for the Skalapp
tablet, which is meant to be used as an interface to control the scale. Manipulation of the
weighing system should only be carried out if the machine is switched off and only by the
manufacturer or persons authorized and trained by the manufacturer.
Exceeding a vehicle’s or tralier’s maximum loading capacity negatively impacts its safe
operation and is not permitted. Always confirm the maximum loading capacity of
vehicles/trailers being loaded and strictly comply with such limits.
Scale is not approved for use in potentially explosive environments or environments
containing aggressive substances (e. g. acids, alkalis, galvanizing baths)
Equipment disposal
Never dispose of scale components in household waste containers
Electronic devices should be disposed of separately and in an environmentally friendly
manner.
The BaseBoard computing unit includes a button battery, which is located under the
screw-on cover of the unit, and should be removed before disposing of the device.

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Skalapp – Operating Manual
Technical Data
Rated voltage: 24 V DC
Power input: max 1 A
Operating temperature: From -10° C to +40° C
Humidity: Up to 85% at 40° C, non-condensing
Nominal pressure: 0 - 500 bar
Destruction pressure: > 2100 bar
Tablet Display: 8"capacitive touch screen, 1280 x 800 pixels
Tablet Dimensions: 232 x 158 x 22 mm
Tablet weight: 810 g
Metrological characteristics
All metrological characteristics of the device (Max, Min, and scale interval calculation) are
displayed in the footer of the scale interface.
If the scale is approved for commercial weighing, the application footer contains the accuracy
class identification Y(b) and the type verification certificate.
If the scale acts as checkweigher, the data in the footer are displayed in red letters. Such scale
shall not be used in for commercial transactions.

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Skalapp – Operating Manual
Switching tablet on/off
When the tablet is in sleep mode, you can simply start it by briefly pressing
the POWER button on the side of the tablet.
If the tablet completely shuts off, hold down the POWER button for 3
seconds and wait for it to start.
To turn off the tablet, hold down the POWER button and select “Shut
down” on the screen.
Charging the tablet
The tablet is typically connected to the baseboard computing unit, which
both calculates bucket weight and powers/charges the tablet.
To optimize battery life, automatic charging of the tablet will start when battery capacity reaches
30% and will stop charging when capacity reaches 90%. Automatic charging is fully initiated by
the scale and does not require any interaction by the user.
Make sure to switch off the tablet if the loader is stopped or if the battery circuit is switched off,
as the tablet’s battery could be completely discharged! Charging begins as soon as the machine’s
electrical circuit is switched on. In case of a full discharge, the tablet can be switched on again after
about 30 minutes of charging and will be ready for use.
Launching the scale interface and logging in
The scale interface is pre-installed on the supplied tablet and is ready for immediate use.
The interface allows individual registration of drivers, with each
receiving a unique PIN to login and begin use. Permission levels can
also be assigned to each user.
There are two types of users in the factory settings:
•Admin (PIN)
•User (no PIN)
To login as an Administrator, tap the PIN field, enter your PIN
(default PIN: 1234) and then tap the arrow icon next to the PIN
number to confirm.
To login as a user, just tap the arrow icon to enter the scale
interface.
Note 1: During scale configuration, the ability of users logging in
without a PIN can be disabled. If anonymous login is disabled, the
Administrator must create additional users and set their PINs to allow them to login to the scale
interface.
Note 2: After user login, the scale must always be zeroed to ensure accuracy. However, if loading
is active, its values are retained and the user can carry on with loading after zeroing is carried out.

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Skalapp – Operating Manual
Zeroing
Zeroing the scale allows it to reset to current operating conditions
(oil temperature, material stuck in bucket, etc.), thus ensuring
accurate weighing.
The user is prompted to zero whenever:
-The scale is switched on
-Attachment is changed (see “Working with multiple
attachments” section)
-A new login is performed
-Oil temperature increases/decreases by more than 10° C
since the last zeroing
-Timeout is reached since the last zeroing (usually 60 min.)
We recommend setting mandatory zeroing at the end of each
loading cycle (e. g. loading the truck) to account for material that
may be stuck in the bucket.
Different attachments can be independently calibrated and assigned their own profile for future
use. Zeroing is always required after changing an attachment.
Zeroing procedure:
1. Lower the boom with an empty bucket
2. Close the bucket
3. While machine is stationary, move the boom slowly and steadily through the weighing
position
If zeroing is successful, “Zeroing successful” is displayed
and the screen switches to weighing mode.
If zeroing fails, a message is displayed that describes the
problem:
Bucket not closedClose bucket
-Too large a difference in zero weight Clean
stuck material from bucket
-Fast/slow lifting speed Perform lifting
operation within defined speed range
Note: Users can manually select zeroing in the menu. When performing the zeroing procedure, all
current loading data is retained.

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Skalapp – Operating Manual
Weighing page
The main page of the scale interface displays information about loading status, as well as allows
for control of the scale.
Overview and key functions:
-Access to master menu
-Data from bucket position sensor
-Weight of current bucket load
-Number of buckets loaded
-Display of active attachment (with ability to change attachment)
-Current total load weight of truck and trailer (with ability to switch between both)
-View of basic data (with ability to revise data)
-Quick selection menu (total of 9 quick select categories)
-Sleep/Standby button
-Complete/Save weighing button
Current bucket load
weight
Total truck load
weight
Total trailer load
weight
Quick selection
Complete weighing and
save
Basic data
Sleep/Standby mode
Number of buckets in load
Menu
Active attachment

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Skalapp – Operating Manual
Loading
Use of the scale does not interfere with the normal loading procedure. Weighing is automatic and
does not require any control or interaction by the machine operator, so they can fully concentrate
on their job.
1. Lower the boom with an empty bucket and pick up the material
2. Close the bucket
3. Raise the boom through the weighing position at a slow and steady speed
After passing the weighing position, the scale interface gives an audible alarm to confirm
successful weighing and displays the bucket weight.
TIP: You can select where the next bucket load will be emptied by tapping on the truck or trailer
image.
4. Empty material at destination (e.g., truck)
After emptying the material at its destination, the scale automatically adds this bucket weight to
the total truck/trailer load weight and switches back to the weighing page. Confirmation and
addition of the bucket weight to the total truck/trailer load weight may be manually performed by
pressing the "
Confirm " button.
Note: As long as the "Fixed weight" page is displayed, the weight of the last bucket load is not
added to the total truck/trailer load weight. The page shows the weight of the future total
truck/trailer load weight (after adding the weight of the current bucket load).
While the "Fixed weight" is displayed, the bucket weight can be deleted without adding to the
weight of the future total truck/trailer load.
Example: The current bucket weight can be deleted, material dumped out and a new load
reweighed if the total load weight would exceed the maximum loading capacity of the truck or
trailer. The bucket weight will only be added after dumping material on the target destination.
Weight of current bucket
load
Total of future load