LAUMAS TLB User manual

ENGLISH ENGLISH ENGLISH ENGLISH
Installation and User Manual
version 1.16
TLB

SYMBOLS
Here are the symbols used in the manual to draw the reader's attention:
Caution! Risk of electric shock.
Caution! This operation must be performed by skilled personnel.
Pay particular attention to the following instructions.
Further information.
WARRANTY
24 months from the date of the delivery note. Warranty covers only failures of defective components (due to construction
defects or defects in materials) and includes replacement or repair of the components and related labor costs.
Warranty is automatically forfeited in the event of:
- tampering, deletion, removal of the identification label and/or serial number of the product
- misuse, transformation, alteration, repair of products not carried out by Laumas personnel
Laumas provides a 1-year warranty from the date of the delivery note on defects in material or manufacture of the battery.
GUIDELINES FOR PROPER DISPOSAL
This symbol on the product or packaging indicates that:
-This is electrical/electronic equipment and cannot be disposed of as municipal solid waste, but must be delivered
to a recycling center
-Improper use or disposal can pollute the environment or damage human health
-Non-compliance with these guidelines will be penalized in accordance with the regulations in force in the country
of destination
-It is recommended to dispose of the packing and packaging as required by local regulations

TABLE OF CONTENTS
USER WARNINGS ................................................................................................................... 1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS . 1
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS................ 2
LOAD CELL INPUT TEST (QUICK ACCESS) .......................................................................... 4
LOAD CELL TESTING............................................................................................................... 4
MAIN SPECIFICATIONS OF THE INSTRUMENT................................................................... 5
TECHNICAL SPECIFICATIONS .............................................................................................. 6
ELECTRICAL CONNECTIONS................................................................................................ 7
BASIC INFORMATION............................................................................................................... 7
WIRING DIAGRAM..................................................................................................................... 8
TLB –TLB485 –TLBPROFI............................................................................................................... 8
TLB (other models) ............................................................................................................................ 9
LED AND KEYS FUNCTIONS ............................................................................................... 10
MENU MAP ............................................................................................................................ 11
SETPOINT ................................................................................................................................ 11
SYSTEM PARAMETERS ......................................................................................................... 11
INSTRUMENT COMMISSIONING.......................................................................................... 12
PROGRAMMING OF SYSTEM PARAMETERS.................................................................... 13
THEORETICAL CALIBRATION............................................................................................... 13
MAXIMUM CAPACITY...................................................................................................................... 14
TARE WEIGHT ZERO SETTING ...................................................................................................... 14
ZERO VALUE MANUAL ENTRY...................................................................................................... 14
REAL CALIBRATION (WITH SAMPLE WEIGHTS) ................................................................ 15
FILTER ON THE WEIGHT ....................................................................................................... 16
ANTI PEAK........................................................................................................................................ 16
ZERO PARAMETERS.............................................................................................................. 17
RESETTABLE WEIGHT SETTING FOR SMALL WEIGHT CHANGES.......................................... 17
AUTOMATIC ZERO SETTING AT POWER-ON .............................................................................. 17
ZERO TRACKING ............................................................................................................................. 17
SETTING UNITS OF MEASURE.............................................................................................. 18
DISPLAY COEFFICIENT .................................................................................................................. 18
OUTPUTS AND INPUTS CONFIGURATION .......................................................................... 20
SEMI-AUTOMATIC TARE (NET/GROSS) ............................................................................... 21
PRESET TARE (SUBTRACTIVE TARE DEVICE)................................................................... 22
SEMI-AUTOMATIC ZERO (WEIGHT ZERO-SETTING FOR SMALL VARIATIONS) ............ 23
PEAK ........................................................................................................................................ 23
ANALOG OUTPUT (TLB ONLY) ............................................................................................. 24
SERIAL COMMUNICATION SETTING.................................................................................... 26
RS485 SERIAL COMMUNICATION ................................................................................................. 27
DIRECT CONNECTION BETWEEN RS485 AND RS232 WITHOUT CONVERTER ...................... 28
TEST......................................................................................................................................... 28

INFO MENU.............................................................................................................................. 28
SETPOINT PROGRAMMING................................................................................................. 29
ALARMS................................................................................................................................. 30
RESERVED FOR THE INSTALLER ...................................................................................... 31
MENU LOCKING...................................................................................................................... 31
MENU UNLOCKING................................................................................................................. 31
TEMPORARY MENU UNLOCKING......................................................................................... 31
DATA DELETION AND PROGRAM SELECTION................................................................... 31
KEYPAD OR DISPLAY LOCKING .......................................................................................... 32
DECLARATION OF CONFORMITY - EU............................................................................... 33
DECLARATION OF CONFORMITY - UKCA ......................................................................... 34

- 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)
-If the working temperature reaches the permitted limits, it is advisable to distance the instruments
to ensure adequate air flow and avoid malfunctions (e.g.: sudden shutdowns or disconnections)
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 –SUPPLY) 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
-Analog current output: up to 500 metres with 0.5 mm2 cable
-Analog voltage output: up to 300 metres with 0.5 mm2cable

- 2 -
RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS
SIZING OF LOAD CELLS CAPACITY
For safety reasons, in case of static weighing, it is advisable to use the load cells at a maximum of 70-
80% of its nominal capacity (assuming that the load is uniformly distributed over the entire weighed
structure); depending on the handling mode of the load to weigh, consider to further reduce the % of
load with respect to the nominal capacity (ex.: forklifts handling, bridge cranes, etc.).
In case of weighing with dynamic loads, the installer has to estimate the thrust speed, the acceleration,
the frequency, etc.
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.
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 mm2
minimum cross-section).
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).
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.

- 3 -
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

- 4 -
LOAD CELL INPUT TEST (QUICK ACCESS)
From the weight display, press for 3 seconds: the display shows the response signal of the load
cells expressed in mV with four decimals.
Example: a load cell with 2.000 mV/V sensitivity provides a response signal between 0 and 10 mV.
LOAD CELL TESTING
Load cell resistance measurement (use a digital multimeter):
-Turn off the instrument.
-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):
-Turn on the instrument.
-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.


3 s

- 5 -
MAIN SPECIFICATIONS OF THE INSTRUMENT
Weight transmitter with 6-wire load cells input suitable for assembly on back panel fitted Omega/DIN
rail. Dimensions: 25x115x120 mm. Six-digit semi-alphanumeric display, 8 mm height, 7 segment.
Four-key keyboard.
RS485 serial port for connection to: PC/PLC up to 32 instruments (max 99 with line repeaters) by
ASCII Laumas or ModBus R.T.U. protocol, remote display.
Optional: integrated CANopen, DeviceNet, CC-Link, PROFIBUS DP, Modbus/TCP, Ethernet TCP/IP,
Ethernet/IP, PROFINET IO, EtherCAT, POWERLINK, SERCOS III output.
TLB only: optoisolated 16 bit analog output (tension or current).

- 6 -
TECHNICAL SPECIFICATIONS
POWER SUPPLY and CONSUMPTION
12/24 VDC ±10%; 5 W
No. OF LOAD CELLS IN PARALLEL and SUPPLY
max 8 (350 ohm); 5 VDC / 120 mA
LINEARITY
< 0.01% F.S.
ANALOG OUTPUT LINEARITY (TLB only)
< 0.01% F.S.
THERMAL DRIFT
< 0.0005% F.S./°C
ANALOG OUTPUT THERMAL DRIFT (TLB only)
< 0.003 % F.S./°C
A/D CONVERTER
24 bit (16000000 points)
DIVISIONS
(with measurement range ±10 mV = sens. 2 mV/V)
±999999
MEASUREMENT RANGE
±39 mV
MAX SENSITIVITY OF USABLE LOAD CELLS
±7 mV/V
MAX CONVERSIONS PER SECOND
300 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
10 levels / 5÷300 Hz
RELAY OUTPUTS
N. 3 - max 115 VAC; 150 mA
DIGITAL INPUTS
N. 2 - optoisolated 5 - 24 VDC PNP
SERIAL PORTS
RS485
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 (TLB only)
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. 3 - max 30 VAC, 60 VDC; 150 mA
WORKING TEMPERATURE
-20 °C +60 °C
Equipment to be powered by 12-24 VDC LPS or Class 2 power source.