LAUMAS TLU User manual

ENGLISH ENGLISH ENGLISH ENGLISH
Installation and User Manual
version 1.04
TLU - TLUANA
2014/30/EU
EN55022:2010 EN61000-6-2:2005 EN61000-6-4:2007
SYSTEM IDENTIFICATION

KEY TO SYMBOLS
Below are the symbols used in the manual to draw the reader's attention:
Warning! Risk of electrocution.
Warning! This operation must be performed by skilled workers.
Read the following indications carefully.
Further information.
GUARANTEE
24 months from the delivery document date. The guarantee covers only defected parts and includes the replacement parts and
labour. All shipping and packing costs are paid by the customer. It is possible to have the repair in guarantee on condition that the
returned product has not been transformed, damaged or repaired without authorization. No guarantee is applicable on returned
products without the original label and/or serial number. No guarantee against misuse.
Batteries: Laumas provides 1 year guarantee from the date of delivery note, against material defects or battery manufacturing faults.
Disposal of Waste Equipment by Users in Private Households in the European Union
This symbol on the product or on its packaging indicates that this product must not be disposed of with
your other household waste. It is your responsibility to dispose of your waste equipment by handing it
over to a designated collection point for the recycling of waste electrical and electronic equipment. The
separate collection and recycling of your waste equipment at the time of disposal will help preserve
natural resources and protect human health and the environment. For more information about where you
can drop off your waste equipment for recycling, please contact your local waste disposal Authority or
the equipment retailer.

TABLE OF CONTENTS
USER WARNINGS ................................................................................................................... 1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS .1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS................1
LOAD CELL INPUT TEST (QUICK ACCESS) .......................................................................... 3
LOAD CELL TESTING............................................................................................................... 3
MAIN SPECIFICATIONS OF THE INSTRUMENT...................................................................4
TECHNICAL SPECIFICATIONS .............................................................................................. 5
ELECTRICAL CONNECTIONS................................................................................................6
BASIC INFORMATION............................................................................................................... 6
WIRING DIAGRAM..................................................................................................................... 6
LED AND KEY FUNCTION ......................................................................................................7
MENU MAP ..............................................................................................................................8
SETPOINT .................................................................................................................................. 8
SYSTEM PARAMETERS ........................................................................................................... 8
INSTRUMENT COMMISSIONING............................................................................................9
PROGRAMMING OF SYSTEM PARAMETERS....................................................................10
THEORETICAL CALIBRATION............................................................................................... 10
MAXIMUM CAPACITY......................................................................................................................11
TARE WEIGHT ZERO SETTING......................................................................................................11
ZERO VALUE MANUAL ENTRY......................................................................................................11
REAL CALIBRATION (WITH SAMPLE WEIGHTS) ................................................................ 12
FILTER ON THE WEIGHT ....................................................................................................... 13
ZERO PARAMETERS.............................................................................................................. 13
RESETTABLE WEIGHT SETTING FOR SMALL WEIGHT CHANGES..........................................13
AUTOMATIC ZERO SETTING AT POWER-ON .............................................................................. 14
ZERO TRACKING.............................................................................................................................14
SETTING UNITS OF MEASURE.............................................................................................. 14
SEMI-AUTOMATIC TARE (NET/GROSS) ............................................................................... 14
PRESET TARE (SUBTRACTIVE TARE DEVICE)................................................................... 15
SEMI-AUTOMATIC ZERO (WEIGHT ZERO-SETTING FOR SMALL VARIATIONS) ............ 15
ANALOG OUTPUT (TLUANA) ................................................................................................ 16
SERIAL COMMUNICATION SETTING.................................................................................... 17
RS232 SERIAL COMMUNICATION.................................................................................................18
RS485 SERIAL COMMUNICATION.................................................................................................18
DIRECT CONNECTION BETWEEN RS485 AND RS232 WITHOUT CONVERTER ......................19
TEST......................................................................................................................................... 19
SETPOINT PROGRAMMING.................................................................................................20
ALARMS.................................................................................................................................21
CONTINUOUS WEIGHT TRANSMISSION TO REMOTE DISPLAYS PROTOCOL ............. 22

ASCII BIDIRECTIONAL PROTOCOL....................................................................................23
1.SETPOINT PROGRAMMING .......................................................................................... 23
1.1.SETTING SETPOINT VALUES CURRENTLY IN USE.........................................................23
1.2.SETPOINT STORAGE IN EEPROM MEMORY....................................................................23
2.READING WEIGHT, SETPOINT AND PEAK (IF PRESENT) FROM PC....................... 24
3.SEMI-AUTOMATIC ZERO (WEIGHT ZERO-SETTING FOR SMALL VARIATIONS..... 24
4.COMMUTATION OF GROSS WEIGHT TO NET WEIGHT............................................. 25
5.COMMUTATION OF NET WEIGHT TO GROSS WEIGHT............................................. 25
6.READING OF DECIMALS AND DIVISION NUMBER .................................................... 25
7.TARE ZERO-SETTING.................................................................................................... 25
8.REAL CALIBRATION (WITH SAMPLE WEIGHT) ......................................................... 26
9.KEYPAD LOCK (BLOCK THE ACCESS TO THE INSTRUMENT)................................ 27
10.KEYPAD UNLOCK.......................................................................................................... 27
11.DISPLAY AND KEYPAD LOCK...................................................................................... 27
12.CHECK-SUM CALCULATION ........................................................................................ 27
MODBUS-RTU PROTOCOL .................................................................................................. 28
FUNCTIONS SUPPORTED IN MODBUS ................................................................................ 28
COMMUNICATION ERROR MANAGEMENT ......................................................................... 29
LIST OF AVAILABLE REGISTERS......................................................................................... 30
REAL CALIBRATION (WITH SAMPLE WEIGHTS) ................................................................ 31
ANALOG OUTPUT SETTING .................................................................................................. 31
INPUTS AND OUTPUTS REGISTERS.................................................................................... 32
DIVISION AND UNITS OF MEASURE REGISTER (40014).................................................... 33
COMMAND REGISTER (40006) .............................................................................................. 34
COMMUNICATION EXAMPLES.............................................................................................. 35
RESERVED FOR THE INSTALLER ......................................................................................37
MENU LOCKING...................................................................................................................... 37
MENU UNLOCKING................................................................................................................. 37
TEMPORARY MENU UNLOCKING......................................................................................... 37
DATA DELETION AND PROGRAM SELECTION................................................................... 37
KEYPAD OR DISPLAY LOCKING .......................................................................................... 38
DECLARATION OF CONFORMITY - EU...............................................................................39

- 1 -
USER WARNINGS
RECOMMENDATIONS FOR THE PROPER USE OF WEIGHING INSTRUMENT
-Keep away from heat sources and direct sunlight
-Repair the instrument from rain (except special IP versions)
-Do not wash with water jets (except special IP versions)
-Do not dip in water
-Do not spill liquid on the instrument
-Do not use solvents to clean the instrument
-Do not install in areas subject to explosion hazard (except special Atex versions)
RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS
The terminals indicated on the instrument’s wiring diagram to be connected to earth must
have the same potential as the weighed structure (same earthing pit or earthing system). If
you are unable to ensure this condition, connect with an earthing wire the terminals of the
instrument (including the terminal 0 VDC) to the weighed structure.
The cell cable must be individually led to its panel input and not share a conduit with other cables;
connect it directly to the instrument terminal strip without breaking its route with support terminal
strips.
Use “RC” filters on the instrument-driven solenoid valve and remote control switch coils.
Avoid inverters in the instrument panel; if inevitable, use special filters for the inverters and separate
them with sheet metal partitions.
The panel installer must provide electric protections for the instruments (fuses, door lock switch
etc.).
It is advisable to leave the equipment always switched on to prevent the formation of condensation.
MAXIMUM CABLE LENGTHS
-RS485: 1000 metres with AWG24, shielded and twisted cables
-RS232: 15 metres for baud rates up to 19200
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS
INSTALLING LOAD CELLS: The load cells must be placed on rigid, stable in-line structures; it
is important to use the mounting modules for load cells to compensate for misalignment of the
support surfaces.
PROTECTION OF THE CELL CABLE: Use water-proof sheaths and joints in order to protect the
cables of the cells.
MECHANICAL RESTRAINTS (pipes, etc.): When pipes are present, we recommend the use of
hoses and flexible couplings with open mouthpieces with rubber protection; in case of hard pipes,
place the pipe support or anchor bracket as far as possible from the weighed structure (at a distance
at least 40 times the diameter of the pipe).

- 2 -
CONNECTING SEVERAL CELLS IN PARALLEL: Connect several cells in parallel by using - if
necessary - a watertight junction box with terminal box. The cell connection extension cables must
be shielded, led individually into their piping or conduit and laid as far as possible from the power
cables (in case of 4-wire connections, use cables with 4x1 mm2minimum cross-section).
WELDING: Avoid welding with the load cells already installed. If this cannot be avoided, place the
welder ground clamp close to the required welding point to prevent sending current through the load
cell body.
WINDY CONDITIONS - KNOCKS - VIBRATIONS: The use of weigh modules is strongly
recommended for all load cells to compensate for misalignment of the support surfaces. The system
designer must ensure that the plant is protected against lateral shifting and tipping relating to:
shocks and vibration; windy conditions; seismic conditions in the installation setting; stability of the
support structure.
EARTHING THE WEIGHED STRUCTURE: By means of a copper wire with suitable cross-section,
connect the cell upper support plate with the lower support plate, then connect all the lower plates to
a single earthing system. Electrostatic charges accumulated because of the product rubbing against
the pipes and the weighed container walls are discharged to the ground without going through or
damaging the load cells. Failure to implement a proper earthing system might not affect the
operation of the weighing system; this, however, does not rule out the possibility that the cells and
connected instrument may become damaged in the future. It is forbidden to ensure earthing system
continuity by using metal parts contained in the weighed structure.
FAILURE TO FOLLOW THE INSTALLATION RECOMMENDATIONS WILL BE CONSIDERED
A MISUSE OF THE EQUIPMENT
OK OK
NO NO
NO
OK

- 3 -
LOAD CELL INPUT TEST (QUICK ACCESS)
From the weight display, press ▲for 3 seconds; the response signal of the load cells is displayed,
expressed in mV with four decimals.
LOAD CELL TESTING
Load cell resistance measurement (use a digital multimeter):
-Disconnect the load cells from the instrument and check that there is no moisture in the cell
junction box caused by condensation or water infiltration. If so, drain the system or replace it if
necessary.
-The value between the positive signal wire and the negative signal wire must be equal or similar
to the one indicated in the load cell data sheet (output resistance).
-The value between the positive excitation wire and the negative excitation wire must be equal or
similar to the one indicated in the load cell data sheet (input resistance).
-The insulation value between the shield and any other cell wire and between any other cell wire
and the body of the load cell must be higher than 20 Mohm.
Load cell voltage measurement (use a digital multimeter):
-Take out the load cell to be tested from underneath the container, or alternatively, lift the
container support.
-Make sure that the excitation of two wires of the load cell connected to the instrument (or
amplifier) is 5 Vdc ±3%.
-Measure the response signal between the positive and the negative signal wires by directly
connecting them to the tester, and make sure that it is comprised between 0 and 0.5 mV.
-Apply load to the cell and make sure that there is a signal increment.
IF ONE OF THE ABOVE CONDITIONS IS NOT MET, PLEASE CONTACT THE TECHNICAL
ASSISTANCE SERVICE.

- 4 -
MAIN SPECIFICATIONS OF THE INSTRUMENT
Weight indicator and transmitter for Omega/DIN rail mounting suitable for back panel or junction
box. Six-digit semi-alphanumeric display (8mm h), 7 segment. Four-key keyboard. Dimensions:
25x115x120 mm.
IP67 box version (170x140x95mm). Four fixing holes diameter 4 mm (centre distance 122x152 mm).
Displays the gross weight; from external contact allows to zero set or display the net weight (both
values will be lost when the instrument is turned off).
Peak weight function.
Transmits the gross or net weight via optoisolated analog output 16 bit, current 0-20mA, 4-20mA or
voltage 0-10V, 0-5V ( ±10V / ±5V by closing a soldering jumper).
It has three normally closed relays and one SPDT contact (Single Pol Double Throw) for setpoints
setting
It has two optoisolated inputs: IN1 zero input; IN2 gross/net input.
Transmits the gross or net weight via RS485 serial port, by means of protocols: Modbus RTU, ASCII
bidirectional protocol, Continuous transmission.

- 5 -
TECHNICAL SPECIFICATIONS
POWER SUPPLY and CONSUMPTION (VDC) 12/24 VDC (standard) ±10%; 5 W
NO. OF LOAD CELLS IN PARALLEL and SUPPLY max 8 (350 ohm); 5 VDC / 120 mA
LINEARITY / ANALOG OUTPUT LINEARITY < 0.01% F.S.; < 0.01% F.S.
THERMAL DRIFT / ANALOG OUTPUT THERMAL
DRIFT < 0.0005% F.S./°C; < 0.003% F.S./°C
A/D CONVERTER 24 bit (16000000 points)
MAX DIVISIONS
(with measurement range ±10 mV = sens. 2 mV/V) ±999999
MEASUREMENT RANGE ±19.5 mV
MAX SENSITIVITY OF USABLE LOAD CELLS ±3 mV/V
MAX CONVERSIONS PER SECOND 80 conversions/second
DISPLAY RANGE ±999999
NO. OF DECIMALS / DISPLAY INCREMENTS 0 - 4 / x 1 x 2 x 5 x 10 x 20 x 50 x 100
DIGITAL FILTER / READINGS PER SECOND 0.080 – 7.5 sec / 5 – 80 Hz
RELAY OUTPUTS N.4 - max 115 VAC ; 150mA
DIGITAL INPUTS N.2 - optoisolated 5 - 24 VDC PNP
SERIAL PORTS RS485, RS232
BAUD RATE 2400, 4800, 9600, 19200, 38400, 115200
HUMIDITY (non condensing) 85%
STORAGE TEMPERATURE -30°C +80°C
WORKING TEMPERATURE -20°C +60°C
OPTOISOLATED ANALOG OUTPUT
16 bit - 65535 divisions
0÷20 mA; 4÷20 mA (max 300 ohm); 0÷10 V;
0÷5 V; ±10 V; ±5 V (min 10 kohm)
RELAY OUTPUTS N. 4 - max 30 VAC, 60 VDC; 150 mA
Equipment to be powered by 12-24 Vdc LPS or Class 2 power source.
IP67 BOX VERSIONS
CASTL IP67 box with transparent cover
CASTLPG9 IP67 box with transparent cover and six PG9 cable glands
CASTLGUA (1) IP67 box with transparent cover and six PVC fittings
CASTLTAST IP67 box with external keypad
CASTLTASTPG9 (2) IP67 box with external keypad and six PG9 cable glands
CASTLTASTATEX (3) IP67 box with external keypad. ATEX version II3GD (zone 2, 22)
CASTLTASTGUA IP67 box with external keypad and six PVC fittings
(1) (2) (3)

- 6 -
ELECTRICAL CONNECTIONS
BASIC INFORMATION
-It is recommended that the power supply negative pole be grounded.
-It is possible to supply up to eight 350 ohm load cells or sixteen 700 ohm load cells.
-For 4-wire load cells, make a jumper between EX- and REF- and between EX+ and REF+.
-Connect terminal 0 VDC” to the RS485 common of the connected instruments in the event that
these receive alternating current input or that they have an optically isolated RS485.
-In case of an RS485 network with several devices it is recommended to activate the 120 ohm
termination resistance on the two devices located at the ends of the network, as described in the
paragraph RS485 SERIAL CONNECTION.
-The analog board (ANALOG) is present on TLUANA model.
WIRING DIAGRAM
13123456789 111210 21 141516 171819 20
mA
V
mA-V COM
RELAY OUTPUTS
115Vac 150mA
IN 2
IN 1
OUT
VDC
IN-OUT COM
ANALOG IN 1
OUT1 OUT2 OUT3 OUT4
ANALOG IN 2
EC
EC-IN COM
DIG. IN 12/24Volt
RX RS232
TX RS232
ESC
0
29252322 24 2726 28 333130 32
POWER
0 VDC
+ 12-24
- EX
+ EX + SIG
- SIG - REF
+ REF
LOAD CELLS
+ RS485
- RS485
NET 0kg gL
RS485 12-24Vdc
RX
RS232
TLU
J2
RS485 termination
J1
ZERO
GROSS/NET
OUTPUT
ANALOG
OPTION ANALOG
OPTION
+SIGNAL
LOAD CELLS
SHIELD
+EXCITATION
-EXCITATION
-SIGNAL
-REF./SENSE
+REF./SENSE
+ EXCITATION
4-WIRE load cell
CONNECTION
17
- EXCITATION
SHIELD
16
+ SIGNAL
- SIGNAL
21
1918 20
6-WIRE load cell
CONNECTION
TX
IN 1: zero input
IN 2: NET/GROSS input