ob DD2050 User manual
DD2050 INDICATOR
USE AND MAINTENANCE MANUAL
Code 81320402 Edition 13.12.2012
DD2050
1-2
1. GENERAL...............................................................4
1.3
SYMBOLS................................................................................6
1.4
DESCRIPTION
OF
THE
TERMINAL........................................7
1.5
TECHNICAL
CHARACTERISTICS
OF
THE
TERMINAL.........8
1.6
DIMENSIONS
AND
WEIGHT.................................................10
1.7
DISPOSAL.............................................................................12
1.8
TECHNICAL
ASSISTANCE...................................................13
1.9
SPARE
PART
LIST................................................................13
1.10
WARRANTY.........................................................................13
2. SAFETY INSTRUCTIONS....................................14
2.1
PROHIBITED
USES...............................................................14
2.2
REGULATIONS .....................................................................14
2.3
PRESCRIPTIONS
OF
USE....................................................14
3. INSTALLATION....................................................16
3.1
CONNECTION
OF
THE
TERMINAL
TO
THE
ELECTRICAL
SUPPLY
LINE..............................................................................19
3.1
CONNECTION
OF
THE
TERMINAL
TO
THE
ELECTRICAL
SUPPLY
LINE..............................................................................19
3.1.1 Earth connection...............................................................................................................19
3.1.2 Connection to main...........................................................................................................20
3.2
C
ONNECTION TO SCALE
............................................................22
3.2.2 Scale connection. Analogue load cells..............................................................................23
3.2.3 Scale connection: digital load cells..................................................................................24
3.3
SERIAL
OUTPUTS ................................................................25
3.4
COM1
CONNECTION...........................................................26
3.5
COM2
CONNECTION............................................................27
3.5.1 RS232 CONNECTION......................................................................................................27
3.6
CONNECTION
OF
COM3
SERIAL
OUTPUT ....................
28
3.6.1 RS422 CONNECTION....................................................................................................28
3.7
CONNECTION
TO
AN
EXTERNAL
KEYBOARD ................29
3.8
INPUT/OUTPUT
CONNECTION .........................................29
3.8
INPUT/OUTPUT....................................................................29
Input connection.........................................................................................................................30
Output connection......................................................................................................................31
3.9
OPTIONAL
SERIAL
OUTPUT...............................................32
COM5 serial connection...........................................................................................................32
COM4 serial connection............................................................................................................33
RS485 connection on DSUB9 connector.................................................................................33
DD2050 1-
3
RS485
CONNECTION ON TERMINAL BOARD
.....................................33
3.10
OPTIONAL
4INPUT/
6OUTPUT........................................35
Input connection.........................................................................................................................35
Output connection......................................................................................................................36
3.11
OPTIONAL
A
NALOG
O
UTPUT
(0-10
V
,
4-20
M
A).....................36
DD2050
1-4
1. GENERAL
1.2 Foreword
•The aim of this manual is to provide the operator, through the use of
text and illustrations, with essential information regarding the
installation, safe operation and maintenance of the weighing system.
•This manual must be kept in a safe place where it is readily available for
consultation. Always observe the instructions contained in the manual!
•The safe operation of the system is the responsibility of the operator,
who must have a thorough knowledge of the system.
•The user is responsible for ensuring that the installation complies with
the applicable regulations.
•The equipment must be installed by specialised personnel who have
read and understood this manual.
•"Specialised personnel" means any personnel who, by virtue of the
training they have received and their professional experience, have
been explicitly authorised by the "System safety supervisor" to install,
operate and maintain the system.
•In the event of any problems, contact your nearest Service Centre.
•Any attempt on the part of unauthorised personnel to dismantle or
modify the terminal is prohibited; any such attempt shall invalidate the
warranty and release the manufacturer from all liability for any injury or
damage.
•The alteration or removal of the data plates and seals is strictly
prohibited; check that all plates and seals are present and legible, if not
contact After-Sales Service.
•Manufacturer shall not be liable for any damages caused by incorrect
handling of the terminal.
•The information and illustrations contained in this manual were up to
date at the time of publication.
•The Manufacturer is committed to a policy of continuous product
improvement and system components may therefore be subject to
modification.
•All the technical information contained in this manual remains the
exclusive property of the manufacturer and may not be divulged to third
parties.
•No part of this document may be reproduced or transmitted in any form,
including publication in computerised form or on the World Wide Web,
without the express written permission of the manufacturer.
•This manual may not be used for purposes other than those directly
related to the installation, operation and maintenance of the terminal.
DD2050 1-
5
•
In order to more clearly illustrate certain maintenance or adjustment
operations, some of the illustrations in this manual show the weighing
system with the safety guards removed. Under no circumstances may
the system be operated in these conditions. Do not operate the system
in these conditions under any circumstances whatsoever, but remove
the safety guards for the time strictly required to carry out the required
repairs or maintenance then fit them back in place.
DD2050
1-6
1.3 SYMBOLS
Below is a list of the symbols used in this manual to alert the reader to the
various hazards associated with the operation and maintenance of the
instrument.
DANGER
Denotes an operation or procedure where failure to observe t
he
instructions will result in death or serious injury.
CAUTION
Denotes an operation or procedure where failure to observe the
instructions could result in minor injury or damage to the
instrument.
WARNING
Information or instructions on how t
he system is to be operated
correctly in order to maximise its service life or prevent loss or
damage of programmed data or to optimise operation with regard
to metrological standards.
DD2050 1-
7
1.4 DESCRIPTION OF THE TERMINAL
The digital weight indicator allows highly accurate and reliable
weighing. It is mainly designed to weigh vehicles and for
commercial weighing purposes. The graphic display and fully
alphanumeric keypad make it ideal for use by even inexpert
operators.
Some of the main features of the indicator and listed below:
facility for connection to a maximum of 2 scales with analogue
load cells (up to 24 x 350 ohm load cells)
facility for connection to a maximum of 2 scales with digital load
cells (up to 16 CPD load cells)
three RS232/422 serial ports
2 inputs and 2 outputs
110-240 VAC power supply
can be connected to the keyboard of a compatible external PC
Optional boards to interface the indicator and expand the system
can be added on request.
DD2050
1-8
1.5 TECHNICAL CHARACTERISTICS OF THE
TERMINAL
Power Supply 110-240 Vac 200W
Load cell connection up to 12 x 350 ohm analogue
load cells via 9-pin connector per
scale input
up to 12 x CPD digital load cells
via 15-pin connector for 1 scale
input (up to 8 load cells per input
in the event of a duplex)
Minimum impedance 29 ohm ( for each analog scale)
Analog load cells excitation 10 Vdc
Digital load cells excitation 10 – 18 Vdc
Internal resolution 500000 counts @ 25 conv/sec
120000 counts @ 100 conv/sec
Resolution in type-approved
version:
6000 divisions maximum
Maximum input signal 23 mV
Sensitivity 0.6 uV/division (version with
analogue load cells)
Full scale stability < 5 ppm/°C
Zero stability < 5 ppm/°C
Compensated temperature range
-10 + 40 °C
Operating temperature range -15 + 50 °C
Protection class Able to withstand inclement
weather conditions with the
DD2050 1-
9
supplied cover
Humidity 85% @ 40 °C
Output maximum voltage 24 VAC/DC
Output maximum current 190 mA max
External keyboard input USB
Display 12.1” TFT colour display
Touch screen Resistive/ Capacitive Sunlight
version
Printer (optional) Thermal type 80mm media
Reader (optional) RFID, Barcode, magnetic
according to the model
DD2050
1-10
1.6 DIMENSIONS AND WEIGHT
Fig 1.1 –
Overall dimensions and weight of the wall-mounted terminal
version
Dimensions in mm
Weight: 23 kg
DD2050 1-11
Fig 1.2 –
Overall dimensions and weight of the pedestal terminal version
Dimensions in mm
Weight: 23 kg
DD2050
1-12
1.7 DISPOSAL
This electrical or electronic device cannot
be disposed of as solid urban waste.
It must be disposed of separately
DD2050 1-13
1.8 TECHNICAL ASSISTANCE
In the event of any operating faults requiring the intervention of
specialised technicians, contact the manufacturer or your nearest
Service Centre. To enable us to deal with your request swiftly,
always quote the serial number of your terminal, which can be
found on the seal label. Also provide information about the system
in which the terminal is installed.
1.9 SPARE PART LIST
CODE DESCRIPTION
28200148 THERMAL PAPER ROLL
LENGTH = 155 m
WIDTH= 80 mm
EXTERNAL DIAMETER = 130 mm
INTERNAL DIAMETER = 25 mm
1.10 WARRANTY
The conditions of warranty are stipulated in the contract of sale.
DD2050
1-14
2. SAFETY INSTRUCTIONS
2.1 PROHIBITED USES
The instrument you have purchased is a weighing system and has
been designed and manufactured as such. The instrument is
primarily intended for the weighing of goods.
It is forbidden to use the terminal without taking the necessary
precautions for safe use.
Use of the terminal in places with potentially explosive
atmospheres or in areas where there is a risk of fire is strictly
prohibited.
Any other use shall only be permitted if expressly authorised by the
Manufacturer.
2.2 REGULATIONS
The operating conditions for the electronic terminal are subject to
the regulations in force in the country in which the terminal is used.
All use of the terminal in conditions which do not comply with these
regulations is prohibited.
2.3 PRESCRIPTIONS OF USE
Strictly comply with the instructions in this manual during use.
In the event of any discrepancy between the information in
this manual and the instrument purchased, contact your Dealer
or the Manufacturer's After-Sales Service for clarification.
Always observe the indications given on the warning and
danger plates on the terminal.
Check that all the safety guards are in place and that the
connection cables are in good condition and connected
correctly.
DD2050 1-15
Check that the terminal is connected to an electrical outlet
socket equipped with an effective earth connection. Make sure
that the line complies with the applicable regulations. Check
that there is no difference in potential between the earth and
neutral conductors.
If the terminal is to be connected to other devices (e.g. a
computer), these devices must be disconnected from the
electrical supply before connection to the terminal.
DD2050
1-16
3. INSTALLATION
Fig. 3A INTERNAL
12V Logic power supply
24V printer and heater power
supply
Electronic board groups
Climatic control
Main switch
DD2050 1-17
Fig. 3B: Block diagram
DD2050
1-18
Fig 3.1
–
CPU box: bottom view
Key:
1. Optional board slots
2. N° 3 serial com ports RS232/422
3. Scale A
4. Scale B
5. USB Host.
6. N° 2 input/output 24 V ac/dc.
7. 12 Vdc/5A power entry
8. Ethernet 10/100 Mbps
9. Compact flash
10. SD card
DD2050 1-19
3.1
CONNECTION OF THE TERMINAL TO
THE ELECTRICAL SUPPLY LINE
Connection to the electrical supply line is at the customer's charge.
The customer must arrange for specialised electricians to route the
protection conductor and power lead.
3.1.1 Earth connection
Connect the terminal to the earth network using a yellow-green lead
of at least 6mm². Use the earth connection screw under the
terminal.
The equipotential connector from the scale (if any) should also be
connected to the same earth connection point (see par. 3.3.1 on
page 1-25).
If the terminal is installed on a pedestal, insert the earth lead into
this.
The leads and accessories for this connection are not part of the
supply but are at the customer's charge.
DD2050
1-20
3.1.2 Connection to main
Use a three pole lead with a section that suits the type of
installation.
Refer to the technical specifications of the power supply line when
choosing the power lead
Main characteristics of the power lead:
cable with double insulation and 3 coloured internal conductors
(line=brown, neutral=blue, earth=yellow-green)
internal conductors with section from 1,5mm² to 2,5mm²
outer sheath diameter from 5 to 10mm
DANGER
Check that:
the voltage and frequency of the electrical supply line
correspond to the indications on the sealing plate on
the bottom of the terminal;
the mains outlet socket to which the terminal is
connected is equipped with an earth;
the warning and danger signs are present and
legible;
failing this, notify your maintenance personnel or
contact our Assistance Service directly
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