Dini Argeo LTP User manual

www.diniargeo.com
LTP
Hydraulic weighing system for forklift truck
ENGLISHINSTALLATION AND OPERATING INSTRUCTIONS

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USER_MAN_ENG_LTP
Contents
Introduction 5
Weighing system specifications 5
Warnings 6
Kit components 7
Weight indicator 7
Bracket for fixing the indicator in the cabin 10
Pressure sensor 10
Reference stickers 10
Kit installation 11
Before installation 11
Sensor installation 12
Installing the indicator 13
Applying reference adhesives 15
Use 16
Calibration 17
Basic functions 19
Ignition - On 19
Switching off 19
Zero 19
Adjusting the display brightness 20
Auto-weighted tare 20
Tare cancellation 21
Setting a known tare value (PT) 22
Print 23
Metric information 23
Additional functions for models with numeric keypad 24
Archive 30 tares 24
Automatic tare cancellation 25
Numeric IDs 26
Date and time 27
Printing (and reprinting of the last receipt) 28
Metric information 29

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Advanced scale functions 30
How to enter the functions menu 30
Horizontal totalization 31
Exchange between net and gross weight 33
Unit of measure conversion 34
Maintenance 36
Replacing the printer paper roll 36

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USER_MAN_ENG_LTP
Dear customer,
Thank you for purchasing a DINI ARGEO product.
This manual explains the installation and commissioning for the hydraulic weighing system for forklift trucks.
In particular, the installation of the sensor and the calibration of the indicator are described (with the corresponding adjustable ranges of
values and practical programming examples) to assist the technician during system installation.
For any additional information or specific requests, please contact your local dealer.
This publication is optimized for A4 printing.
Introduction
Weighing system specifications
SUPPLY LTP: 4 AA batteries (max. duration 40h), or 12V via power supply unit (optional).
LTPKPXP: 12V from forklift truck, via power supply unit (optional).
MAXIMUM CAPACITY 4000 PSI / 280 bar.
RESOLUTION 20 kg for capacities up to 2500 kg.
50 kg for capacities up to 5000 kg.
100 kg for capacities up to 10000 kg.
RECOMMENDED MINIMUM WEIGHT 10 reading divisions.
DEGREE OF PROTECTION OF THE
SENSOR
IP65.
DISPLAY Backlit 25mm LCD with 6 high contrast digits and icons to indicate active functions.
KEYBOARD LTP: membrane, 5 keys.
LTPKPXP: membrane, 17 keys.
PRINTER Integrated thermal printer (only for model LTPKPXP).
Diameter: 50 mm, width: 58 mm.

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• The weighing system does not change the safety regulations normally applied to the forklift truck.
• Before weighing, make sure that the lift truck is stationary, on a flat surface and that there are no people in the area around the load.
• The employee training on the use of the system is the purchaser’s responsibility.
• Please read this manual carefully before using the system.
• Assistance must only be carried out by personnel authorized by Dini Argeo.
• Dini Argeo is not responsible for any weighing errors resulting from improper use of the system.
Warnings

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Kit components
Weight indicator
Two indicator models are available:
• LTP: powered by AA batteries (including about 40 hours of autonomy), 5-key keypad.
The vertical inclination can be adjusted using the integrated bracket.
• LTPKPXP: powered at 12 Vdc directly from the forklift truck, extended keyboard with 17 keys.

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8
lb
1
2
3
5
6
4
7 8
10
9
USER_MAN_ENG_LTP
DISPLAY
POS. ICON DESCRIPTION
1Indicates that the scale is unloaded (gross zero).
2Indicates that the weight is unstable.
3The net weight is displayed.
note: there is a tare in memory.
4 / 5 The gross weight is displayed.
6Indicates the battery level:
7AND activates a locked tare.
8AND activates a manual tare.
9lb ... kg Indicates the units of measurement: pounds (lb), tonnes (t), kilograms (kg), grams (g).
10 Indicates when a key is pressed. In some operating modes it indicates the activation of
a specific function.

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WARNING!
For a clearer view and advanced key and mode functions, see the chapter “BASIC FUNCTIONS” and “ADVANCED FUNCTIONS”.
Button Description
• Resets the weight value on the scale.
• If pressed for a long time (2 sec), it allows you to set the brightness of the display.
• Performs tare on the scale.
• If pressed for a long time (2 sec) it allows you to insert a preset tare.
• Recalls the function specific to the operating mode.
• If pressed for a long time (5 sec) it allows you to change the operating mode.
• Confirm key.
• Print the receipt.
• If pressed for a long time (5 sec) it allows you to enter the configuration menu.
• If pressed for 2 seconds, it turns o the instrument.
• If pressed for 5 sec it shows the metrological information.
If pressed and held (2 sec) it shows the metrological information.
Performs the function (followed by pressing a number).
Allows you to quickly set a numeric value.
KEYBOARD

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Bracket for fixing the indicator in the cabin
Bracket compatible with both models of weight indicator that allows horizontal adjustment during installation.
Pressure sensor
Stainless steel sensor, IP65 degree of protection and hydraulic connector with 1/4 inch parallel PSB female.
Sensor dimensions: length: 73.5 mm; diameter: 24.5 mm.
Reference stickers
Adhesives used to identify the height range of the forks within which the weighing operations are to be carried out.
To be applied to the structure of the forklift truck.

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Before installation
• Check that the maximum oil pressure is lower than the maximum value indicated on the sensor datasheet (4000 psi = 280 bar).
• Remove the pressure in the hydraulic circuit; this can be done in two ways:
A. Lower the forks to the maximum and
swing forward. Make sure the chain is
loose.
B. Place the forks on a stable object.
Make sure that the chain is loose.
Kit installation

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Sensor installation
For two-cylinder carriages,
mount the sensor before
splitting the pressure hose.
SENSOR MOUNTING ON DOUBLECYLINDER FORKLIFTS
The sensor is connected to the lift truck’s hydraulic system via a compatible T-connector (not included in the kit).
Install the sensor in the pressure pipe that guides the cylinder (the sensor should be positioned as close as possible to the cylinder).
Forintensive use of the forklift truck, it is advisable to use a tube of about 50 cm between the T-piece and the sensor. By moving the
sensor away from the heat source, accuracy will not be adversely aected by temperature (e.g. motor, batteries, etc.).
SENSOR MOUNTING ON SINGLECYLINDER FORKLIFTS

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A
B
C
USER_MAN_ENG_LTP
For the LTPKPXP model, attach the bracket to the two rear pins of the indicator.
The power cable and the sensor cable are then connected via the two side cable glands.
Installing the indicator
1. FIND A SUITABLE LOCATION FOR THE INDICATOR:
INSTALLING THE INDICATOR BRACKET
Direct the indicator vertically (LTP model only) and horizontally so that it is clearly visible and easy to reach.
For the LTPKPXP model, recommended installation is C. (at dashboard height).
Install the bracket to the indicator using the supplied fixing components.

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SIG-
SEN+
SEN-
SIG+
EXC-
EXC+
J2
J2
J3
J3
EXC+SEN+ SEN- EXC-
SHIELD
IN OUT
COM 1
RS232
+5V
GND
RS232
COM 2
CTS
RX
TX
J4
ON
POWER
12Vdc
COM 1
RS232
+5V
GND
RS232
COM 2
CTS
RX
TX
J4
ON
POWER
4,8 Vdc
USER_MAN_ENG_LTP
CONNECTING THE SENSOR TO THE INDICATOR
GREEN
WHITE
RED
BLACK
YELLOW
Connect the cable according to the following standards:
• Disconnect power to the instrument before performing any operation.
• Keep the cable length as short as possible.
• Avoid running the cable near heat sources.
• Make sure that the cable does not get caught in the moving parts of the lift truck.
• Connect the cable wires to the indicator terminal block using suitably sized cable lugs.
INDICATOR POWER SUPPLY
1. LTP:
4 x AA batteries
12Vdc from forklift via external power supply unit
BATTERY
TROLLEY
ELEVATOR
BATTERY PACKAGE
(4 x AA)
DC-DC POWER SUPPLY UNIT
CPU CARD
CPU CARD
WARNING!
Before installing the power supply:
1. Remove AA batteries
2. Disconnect the power supply
cables from the battery pack

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SEN+
SEN-
EXC-
EXC+
SIG-
SIG+
12Vdc
CELL 1 CELL 2
CELL 1
POWER
J8
ON
BOOT
+BAT
GND
GND
+Vdc
IN OUT
USER_MAN_ENG_LTP
2. LTPKPXP:
12Vdc from forklift via power supply unit
BATTERY
TROLLEY
ELEVATOR
DC-DC POWER SUPPLY UNIT CPU CARD
Applying reference adhesives
Apply the adhesives at a height of at least 50 cm above the ground.
Apply the arrow sticker to the trolley plate and the rectangular sticker to the upright.
These stickers identify the reference area: perform all weighing operations when the arrowhead is inside the yellow band.
The operator must have full visibility of the reference stickers.
Do not apply the adhesives at an excessive height: for safety reasons it is not advisable to lift heavy loads above
a certain height.
The use of protection fuses is optional and is the installer’s responsibility.

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Use
The system is based on the measurement of the oil pressure contained in the hydraulic lifting circuit by means of a specific sensor. This
pressure depends on the load on the forks and the height of the forks themselves, which is why the weighing operations must always be
carried out at the same height (indicated by the stickers).
The theoretical precision of the LTP system, correctly installed on suitable forklifts and used under optimal conditions, varies from
0.5% to 5% of the capacity (min. 20 kg).
This accuracy is adversely aected by the following factors:
Type and state of wear of the forklift.
- 10° C
+ 50° C
Ambient temperature: The temperature range of the sensor is from -10°C to +50°C.
Always use the LTP system at the same temperature.
Mechanical friction: keep sliding parts clean and lubricated.
Oil leaks.
Position of the load on the forks: the load must always be positioned in the middle.
Tilting the mast: the correct position of the mast is at 90° with respect to the ground.
A dierence of 2 - 3 degrees has almost no influence.
Lifting speed: lift the load at a constant speed without sudden jerks.
Position of the sensor inside the hydraulic circuit.
Type of oil in the hydraulic circuit: use oils with low viscosity and suitable for a wide temperature
range.

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0
2 sec
-off-
C
max
0
888888
C
0.Cal
ADVANC
Cal
USER_MAN_ENG_LTP
Before starting the calibration procedure for all purposes, it is necessary to heat up the oil in the hydraulic circuit by lifting the forks a few
times in a vacuum.
In this way the oil temperature during calibration and during use will be almost equal.
Calibration
ENTER THE PROGRAMMING MENU:
SELECT THE PARAMETER CAL
BRING THE OIL OF THE HYDRAULIC CIRCUIT TO TEMPERATURE
Press the key while the power on messages are displayed.
Scroll with the keys and the main menu and enter
in the parameter Cal by pressing the key .
PROGRAMMING MENU
1. Turn o the indicator. 2. Switch on and follow the procedure:

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divCAL
unload
-ok-
Cal.ok
000000
÷
÷
000000
Store
0
0.0 0 1 200
10 -10
CapaC
unload
Load
kg
kg
kg
kg
kg
kg
1 - 10
x 3
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Start of calibration procedure:
Set the resolution (*)
and press
Set the capacity value (*)
of the forklift truck and
press
How to set the value
How to set the value
...
0 9
or
Enter the calibration
weight (At least 2/3 of the
capacity) and press
...
0 9
How to set the value
or
To correctly acquire the zero point (unload) and the load (load) it is always necessary to lift the forks to the reference height,
starting from the ground.
Always use the weighing area previously identified with the stickers.
Wait for the load acquisition
Repeat the
LOAD – DISCHARGE
Operations 3 times.
* RECOMMENDED VALUES:
CAPACITY RESOLUTION
2500 kg 20 kg
5000 kg 50 kg
10000 kg 100 kg

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A
A
A
B
B
B
C
C
C
C
0
0
0
40
-off-
C
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Basic functions
Ignition - On
Zero
Visualization Display:
Visualization Display:
Visualization Display:
Condition of the forklift truck:
Condition of the forklift truck:
Condition of the forklift truck:
Visualization Display:
Visualization Display:
Visualization Display:
Condition of the forklift truck:
Condition of the forklift truck:
Condition of the forklift truck:
Switching off
ZERO
Press
for 2 s

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20
=+
? kg ? kg
A
A
D
B
B
E
C
C
brGt 0
0
50 0
2000
TARE
USER_MAN_ENG_LTP
Adjusting the display brightness
Visualization Display:
Visualization Display:
Visualization Display:
Condition of the forklift truck:
Condition of the forklift truck:
Visualization Display:
Condition of the forklift truck:
Auto-weighted tare
Condition of the forklift truck:
ZERO
Press
for 2 s
Visualization Display:
Set the brightness value:
Increase value
Decrease value
Confirm
Visualization Display:
Condition of the forklift truck: