Dini Argeo DGT1P User manual
www.diniargeo.com
DGT1P
Digital weight transmitter
ENGLISHUSER MANUAL
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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
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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
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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
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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
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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.
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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 dierent 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
beinserted 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.
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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
Table of contents
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