Dini Argeo DGT1P User manual

www.diniargeo.com
DGT1P
Digital weight transmitter
ENGLISHUSER MANUAL

3
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Contents
Introduction 7
Transmitter installation 8
Installation requirements 8
Electrical precautions 9
Earthing of the system 11
Technical features 14
Load cell installation 15
Wiring diagrams 16
DGT1P - DGT1PAN 16
Display and function of the keys 17
Advanced programming menu 18
Access to the advanced menu and saving the changes 18
Function of the keys in the menu 18
Block diagram of the menu 19
Theoretical calibration 21
Calibration with sample weights 22
Manual calibration 24
Quick zero calibration (pre-tare reset) 24
ADC converter precalibration 25
Filter and stability 25
Filter adjustment 25
Stability detection sensitivity 26
Gravity 27
Reset functions and parameters 28

4
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Auto-zeroing on start-up 28
Maximum percentage of manual zeroing 28
Zero tracking 28
Restoring zero 29
Semi-automatic zeroing 29
Tare functions and parameters 29
Tare mode 29
Semi-automatic tare 29
Predetermined tare 30
Clearing the tare 30
Restoring the tare 30
Alibi memory 31
Enabling the alibi memory 31
Saving a weighing operation in the alibi memory 31
Reading the alibi memory 32
Initialising the alibi memory 32
Use functions 33
High resolution 33
Peak detection 33
Converting units of measurement 33
Alibi memory 33
Digital Input configuration 34
Digital Output configuration 35
Analog output configuration 36
Serial communication configuration 38
Transmission mode 38
Baud rate, parity, data bits, stop bits 39
Communication protocols 40
Standard string 40
Extended string 40
Serial commands 41
Modbus Protocol 44
Diagnostics 46

5
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Cells / converter test 46
Firmware release 46
Serial number 46
Display 46
Keypad 46
Serial ports 47
Inputs 47
Outputs 47
Analog output (mod. DGT1PAN) 47
Programming the Setpoints 47
Restoring factory settings 48
Date and time setting 48
Alarms 49

6
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P

7
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Dear Customer,
Thank you for purchasing a DINI ARGEO product.
This manual contains all the instructions for a correct installation and commissioning of the high speed DGT1P digital weight transmitter.
While thanking you for purchasing this product, we would like to draw your attention to some aspects of this manual.
This booklet provides useful information for the correct operation and maintenance of the scale to which it refers;
it is therefore essential to pay the greatest attention to all those paragraphs that illustrate the simplest and safest way to operate.
It is recommended that you carefully follow the instructions for programming the weight transmitter; performing actions not indicated in
this manual could compromise the proper functioning of the scale.
The utmost care has been taken in compiling this manual, but reports of any inaccuracies are always welcome.
The transmitter is covered by warranty and MUST NOT BE TAMPERED WITH BY THE USER under any circumstances.
Any attempt at repair or modification may expose the user to the danger of electric shock and voids any warranty conditions, relieving
the Manufacturer from all liability.
Any problem with the product must be reported to the manufacturer or to the retailer where it was purchased.
In any case, always TURN OFF THE POWER SUPPLY before any installation or repair operation.
Introduction

8
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Transmitter installation
Installation requirements
Observe the following conditions for correct installation of the transmitter and of the load receiver:
• Flat, level support surface.
• Stability and absence of vibrations.
• Absence of aggressive dusts and vapours.
• Absence of draughts.
• Make sure that the platform is levelled or that the load cells are evenly supported.
• Moderate temperature and humidity (15°C - 30°C and 40% - 70%).
• Do not install in an environment where there is a risk of explosion.
• All transmitter connections must be made in accordance with applicable regulations in the area and environment of installation.
Observe the electrical precautions listed in the section “Electrical precautions”.
• Ensure that it is correctly earthed, see the relevant section “Earthing of the system”.
• Do not perform welding when the load cells have already been installed.
• If necessary, use watertight sheaths and fittings to protect the load cell cables.
• Any junction boxes must be watertight.
• Anything not expressly described in this manual constitutes improper use of the equipment.

9
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Electrical precautions
• Use a regulated mains supply within ± 10% of the rated voltage.
• The electrical protections (fuses, etc.) are the responsibility of the installer.
• Observe the recommended minimum distances between cables of dierent categories (see table on page 10).
• The following cables must comply with the maximum permissible lengths (see table on page 10), they must be shielded and must
beinserted alone in metal conduits or pipes:
- the load cell extension cables;
- the signal amplifier cables;
- the cables for connecting the serial ports;
- the analog output cables.
• The cell or amplifier cables must have an independent input in the electrical panel. They must be connected (if possible) directly to
the terminal block of the transmitter without passing through the conduit with other cables.
• Fit “RC” filters:
- on the contactor coils;
- on the solenoid valve coils;
- on all devices that produce electrical interference.
• If condensation can occur inside the weight transmitter, it is advisable to keep the equipment powered at all times.
• Connections to load cells and any external device must be as short as possible.
• The cable ends (connectors, leads, terminals, etc.) must be installed correctly; the cable shielding must be kept intact until close to
the connection point.
• If the transmitter is placed inside an electrical panel, a shielded cable must also be used for the power supply.

10
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Category I Category II Category III Category IV
Distance
≥ 100 mm
≥ 200 mm
≥ 500 mm
≥ 100 mm
≥ 500 mm
≥ 500 mm
Classification
Fieldbus, LAN network
(PROFIBUS, Ethernet,
Devicenet...).
Shielded data cables
(RS232...).
Shielded cables for
analog digital signals
< 25 V (sensors, load
cells...).
Low voltage power sup-
ply cables (< 60 V).
Coaxial cables.
DC supply cables with
voltage > 60 V and <
400 V.
AC supply cables with
voltage > 25 V and <
400 V.
Power supply cables
with voltage > 400 V.
Telephone cables.
Any cable subject to
lightning danger.
Load cell RS232 RS485 Analog output
50 metres with
6 x 0.25 mm2cable;
100 metres with
6 x 0.5 mm2cable.
15 m with baud rate up to
19200.
1200 m with shielded 2 x
24 AWG twisted pair with
outer braid + aluminium
strip.
CURRENT:
100 metres with 2 x 0.25 mm2cable;
150 metres with 2 x 0.5 mm2cable;
300 metres with 2 x 1 mm2cable.
VOLTAGE:
50 metres with 2 x 0.25 mm2cable;
75 metres with 2 x 0.5 mm2cable;
150 metres with 2 x 1 mm2cable.
RECOMMENDED DISTANCES AND CABLE CLASSIFICATION
MAXIMUM ALLOWED LENGTHS

11
Optimized layout for A4 print.
i
TECH_MAN_ENG_DGT1P
Earthing of the system
For correct earthing and optimal system operation, the transmitter, load cells, junction box, if any, and weighing structure must be
earthed.
TRANSMITTER
The earth connection must be made via the appropriate terminal. The cable cross-section must be less than 2.5 mm2.
LOAD CELLS AND JUNCTION BOX
The connection must be made by connecting the earth cables to the earth bar (cables that must have a cross-section of at least 16 mm2);
finally, connect the earth bar to the earth post with a cable having a cross-section of at least 50 mm2.
EXAMPLES:
• If more load cells are connected to the transmitter through a junction box, the cable shield from the transmitter and the cell cable shields
must be connected to the earth socket of the junction box (refer to the junction box manual) and the junction box must be earthed using
a copper cable with a cross-section of not less than 16 mm2.
• If the load cell is connected directly to the transmitter (without using the junction box), the cell cable shields must be connected to
theearthing point (or earth bar).
• If the weighing system involves large and/or outdoor structures (weighbridges, silos, etc.) and the distance between the junction box
andthe weight transmitter is greater than 10 m, connect the cell cable shields to the earth socket in the junction box.
WEIGHING STRUCTURE
Earth the weighing structure and/or any unconnected structures (e.g. silos that release material onto the weighing structure) using cables
with a cross-section of not less than 16 mm2.
Also connect the upper part with the lower part of each cell by means of a copper braid with a cross-section not less than 16 mm2(refer
to the earthing examples on page 12 and page 13).
SERIAL CABLES AND CONNECTED INSTRUMENTS
Connect the serial cable shield to the earthing point (or earth bar) inside the panel. To avoid any undesired eects, the earth reference
ofthe connection cable, power supply and transmitter must be at the same potential.
GENERAL NOTES:
• All earth cables must be of suitable length, so as to obtain an overall resistance of the earthing system of less than 1 Ω.
• If the weighing system involves large and/or outdoor structures (weighbridges, silos, etc.):
- the earth connection must be made by connecting the earth cables to an earth bar and the earth bar to the earth post
with a cable having a cross-section of not less than 50 mm2;
- the thickness of the cables must be greater (50 mm2instead of 16 mm2and 100 mm2instead of 50 mm2), because the
voltages at stake are greater (e.g. lightning);
- the earth post must be placed at a distance of at least 10 m from the structure.
• If the load receiver is more than 10 m from the transmitter, we recommend using the SENSE line and load cells equipped
with a (SENSE) compensation circuit.

12
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
EXAMPLE OF EARTHING OF A WEIGHBRIDGE
Load cell bypass jumper
Weighbridge
Weight transmitter
Load cell
Earth cables
Ø 8 - sec. 50 mm2
Ø 11.3 - sec. 100 mm2
Earth post
positioned under
or near the
weighbridge
Drilled copper plate positioned
on the side wall
Junction box
placed on the side wall of the pit
Weighbridge

13
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Load cell
Protective earth by-
pass for the load cell
EXAMPLE OF EARTHING OF A SILO

14
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Technical features
POWER SUPPLY 12 -24 Vdc LPS or with class 2 power supply.
MAXIMUM ABSORPTION
(without load cells)
DGT1P: 1 W
DGT1PAN: 2 W
OPERATING TEMPERATURE From -10°C to +40°C.
DISPLAY DIVISIONS 10000e, 2 x 3000e for legal weighing, expandable up to 800,000 for internal use (with a
minimum cell signal of 1.6 mV/V).
CONVERSION SPEED Up to 400 conv. / sec
MINIMUM VOLTAGE PER DIVISION 0.3 µV (approved transmitter); 0.01 µV (non-approved transmitter).
COUNTING RESOLUTION 1,500,000 points (with input signal 3 mV/V).
DISPLAY 6 digits, h 14,2 mm (0.56").
SIGNALS 6 status indicator LED lights - 3 unit of measure LED lights.
KEYPAD mechanical with 5 keys.
TARE FUNCTION Subtraction possible over the entire range.
LOAD CELL POWER SUPPLY 5 Vdc, 250 mA.
LOAD CELL CONNECTION 6 wires or 4 wires.
CONNECTABLE CELLS Up to 16 350  cells.
CASE In aluminum, suitable for panel mounting.
DIMENSIONS (lxhxw) 100x53x151. Panel cutout (lxh): 92x44.
SERIAL OUTPUTS 1 half duplex RS485 bidirectional port on terminal.
DIGITAL OUTPUTS / INPUTS 2 photomosfet NO or NC outputs (expandable to 6 with C4OUT option):
max 60 Vdc 0.5 A max / 48 Vac 0.5A;
2 configurable inputs (bidirectional optocouplers): 12 - 48 Vdc;
Input reading and output update time: 1 msec;
ANALOG OUTPUT 16-bit analog output (DGT1PAN version):
• Current: 0 - 20 mA / 4 - 20 mA.
• Voltage: 0 - 5 Vdc, 0 - 10 Vdc.
The maximum applicable resistance on the current output is 300 Ω
while the minimum applicable resistance on the voltage output is 1 kΩ.
LOAD CELL SENSITIVITY Maximum sensitivity of the connectable load cells: 6 mV/V.
CERTIFICATIONS Indicated on the EC Declaration of Conformity of the product.

15
Optimized layout for A4 print.
+
+
-
-
E +
E -
S+ S-
SEN -
SEN +
SIG -
SIG +
EXC -
EXC +
+
+
-
-
E +
E -
S+ S-
SEN -
SEN +
SIG -
SIG +
EXC -
EXC +
+
+
-
-
E +
E -
S+ S-
SEN -
SEN +
SIG -
SIG +
EXC -
EXC +
+
+
-
-
E +
E -
S+ S-
SEN -
SEN +
SIG -
SIG +
EXC -
EXC +
TECH_MAN_ENG_DGT1P
Load cell installation
After carrying out the instructions for the platform or load receiver, the shielded cable from the cell must be properly connected to the
terminal block of the transmitter (see section “Wiring diagrams”).
The transmitter has one channel for 6-wire connection to load cells (using the SENSE).
The SENSE allows you to compensate for any voltage drop on the section of cable connecting the transmitter to the load receiver.
It is especially useful when the distance between the transmitter and the load receiver is more than 10 metres, or in high-resolution
applications.
4-WIRE CONNECTION 6-WIRE CONNECTION

16
Optimized layout for A4 print.
ANALOG OUTPUT
BOOT
J1
CAL
ON
EXC+SEN+ SEN- EXC-
ON
ON
+-
+
+
-
-
E +
E -
S+ S-
SEN -
SEN +
SIG -
SIG +
B (-)
A (+)
COM -
V+
I +
OUT 2 OUT 3 OUT 4 OUT 5 OUT 6
COM COM
IN 2 IN 1
OUT 1
12 ÷ 24 Vdc
EXC -
EXC +
TECH_MAN_ENG_DGT1P
Wiring diagrams
DGT1P - DGT1PAN
Internal use

17
Optimized layout for A4 print.
TECH_MAN_ENG_DGT1P
Display and function of the keys
Symbol Description
Semi-automatic zeroing.
Decreases the selected digit.
Semi-automatic tare.
Increases the selected digit.
Activates the function.
Selects the digit to be changed.
Confirms a value.
Prints / Transmits data.
Reboots the transmitter.
Number Description
Gross weight on zero.
Unstable weight.
A tare is active.
A special function is active.
Output 1 is active.
Output 2 is active.
Unit of measure.

18
Optimized layout for A4 print.
888888
i
i
TECH_MAN_ENG_DGT1P
MENU ACCESS: SAVING THE PARAMETERS:
Press the key during the start-
up procedure.
Press the key several times, until the display shows
SAVE?. Press the key to confirm.
Complete menu
on pages 24 - 25
Function of the keys in the menu
In the menu description on the following pages the symbol indicates repeated pressing of the key until the parameter
indicated is reached.
Advanced programming menu
Access to the advanced menu and saving the changes
HOW TO EXIT THE SETUP AND SAVE CHANGES
1. Press several times, until the display shows “save?”.
2. Press to save or to exit without saving.
1. Reboot the transmitter.
2. Press the key when the display shows 888888.
The advanced menu contains all the transmitter configuration parameters for the most advanced adjustments.
Previous parameter.
Next parameter.
Access the parameter / confirm setting.
Exit a parameter (without saving).
FUNCTION OF THE KEYS WHEN ENTERING NUMBERS
Increases the selected digit.
Decreases the selected digit.
Selects the next digit.
Confirms the value.
Resets the value.
If pressed again, exits entering.

19
Optimized layout for A4 print.
888888 funct
React
CloCk
tare
dsp.rf
ini.al
serial
rs.zero
rs.tare
1
2
3
4
2
5
3
5
6
f.mode
A
ConfiG
1
1
setup
B
Com.pC
1
...
pre.Cal
7
inp.02
out.06
inp.01
out.01
2
6
1
1
inputs
output
5
6
an.out
diaG
C
8defau
TECH_MAN_ENG_DGT1P
LEGEND:
Indicates repeated pressing of
the key.
Parameter visible only
under certain conditions.
Parameter or menu subject
to approval. Default value of the parameter.
Block diagram of the menu
Calibration, filtering and metrological parameters
Continued on page 20.
Display updating frequency.
Operating mode (page 33).
Reactivating functions.
Tare (page 29).
Date and time (page 48).
Zero restore (page 29).
Tare restore (page 30).
PC port configuration (page 38).
Alibi memory initialisation (page 32).
Digital inputs (page 34).
Digital outputs (page 35).
Analog output (page 36).
Restore factory settings (page 48).
Diagnostics (page 46).

20
Optimized layout for A4 print.
888888
Setup
CConfiG 1
stabil
pre.Cal
x.xxxxx
auto-0
param
Grav
1
1
1
2
2
3
deCi
0.traCk
div
Calib.p
ranGe2
adj.Cal
man.Cal
ranGe1
theo.Ca
u.m.
Calib
0.Calib
unit 2
div.stb
peak.fl
0-perC
1
4
3
6
5
8
9
4
7
2
4
5
6
5
6
3
TECH_MAN_ENG_DGT1P
MENU ACCESS: SAVING THE PARAMETERS:
Press the key during the start-
up procedure.
Press the key several times, until the display shows
SAVE?. Press the key to confirm.
Complete menu
on pages 24 - 25
Full ConfiG setup menu is displayed.
Filter (page 25).
ADC converter precalibration (page 25).
Zero parameters (page 28).
Calibration parameters
Stability divisions (page 26).
Anti-peak filter.
Gravity of calibration zone / zone of use (page 27).
Real calibration with sample weights (page 22).
Theoretical calibration (page 21).
Second unit configuration (page 33).
Calibration adjustment.
Manual calibration (page 24).
Zero calibration (page 24).