ABB LWT300 series Manual de usuario
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LWT300 series (Modbus)
Quick Start Guide
Unpacking
If you are reading this document, you have already opened the box containing your instrument. While
following the basic safety instructions provided below, proceed with unpacking the content of this box.
Basic safety
Personnel
WARNING
Only properly certified and authorized personnel should be charged with instrument
installation, electrical connection, commissioning, operation and maintenance.
Depressurize the vessel before opening the instrument connection. Any process media
released may cause severe injuries.
Carefully plan any installation, modification or repair before actually proceeding.
Electrical
WARNING
Do not make electrical connections unless the electrical code designation stamped on the
instrument data plate matches the classification of the area in which you want to install the
instrument. Failure to comply with this warning can result in fire or explosion.
Use only tools compliant with national insulation standards, e.g., DIN EN 60900.
Use only non sparking tools when installing the instrument in hazardous areas.
Improper use
It is prohibited to use the instrument for any of the following, including but not limited to:
• A climbing aid, e.g., for mounting purposes.
• A support for external loads, e.g., as a support for pipes.
• By adding material, e.g., by painting over the name plate, or welding/soldering on parts.
• By removing material, e.g., by drilling the housing.
2Unpacking
What’s in the box
• LWT series instrument head1
• Instrument coupler
• Probe (not shown in Figure 1)
• Quick Start Guide (this document)
• USB key (with user guide, safety guide, datasheet, customer data package [optional])
Should any part of the package be damaged upon reception, contact ABB customer service as indicated
on the back cover of your user guide.
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Figure 1 LWT300 series typical installation
LWT300 head
LWT NPT coupler
Bolts (provided by client)
NPT flange (provided by client)
Gasket (provided by client)
Nuts (provided by client)
¹ The instrument head and coupler are delivered already assembled unless the remote head option was ordered.
LWT300 series (Modbus) Quick Start Guide 3
Basic physical installation
Below is a list of basic steps necessary to properly install LWT series instruments, as recommended by
ABB. All installations should be performed by certified and authorized personnel in accordance with all
applicable local security codes (electrical, engineering, etc.).
Here are the basic installation steps:
1 Access and properly secure the installation site (vessel depressurization and cool down, mains power
down, etc.).
2 Attach the probe to the head/coupler assembly.
3 Slide the probe in the vessel and attach the probe/coupler assembly on the flange.
4 Connect the mains to the head unit.
5 Power up and configure the instrument.
The steps indicated above are explained in more details in the LWT series user’s guide.
Simple connection diagram
Here is a simple power connection diagram for LWT series instruments installed in a non-explosive
location.
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Figure 2 Modbus connection diagram
Modbus®
Master
Device
Power supply
10.5 to 28.5 V DC
LWT Modbus®
Instrument
A (+)
B (–)
PWR
+
–
A (+)
B (–)
+
–
GND
RS-485
Communication
Link
Initial software setup
Initial setup of the instrument is performed via the Easy Setup menu. Below you will find menu items,
factory-set values (in bold) and lists of all available values when you click Select from the Easy Setup
screen.
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Figure 3 Easy Setup menu
4Initial software setup
Submenu Default value Available values
Application Category
(type of measurement performed)
Water-Based (DC>10) Water-Based (DC>10)
Liquid mix. (3<DC<10)
Oil Based (DC<3)
Solid (organic)
Solid(Others)
Interface
Set PV
(primary value measured)
Level Level
Distance
Ullage
Interface¹
Thickness¹
Interface Distance¹
PV Unit
(measurement unit for the primary
value)
m (meter) m (meter)
cm (centimeter)
mm (millimeter)
ft (feet)
in (inch)
↓ Empty/Zero
(distance between the process
connection and the starting point of
the measuring level range)
Factory-set based on full span of
probe length
Customizable
↑ Full/Span
(the distance between the minimum
level and the maximum level)
Factory-set based on full span of
probe length
Customizable
Max Level Rate
(rate at which the vessel should reach
its maximum level)
Medium: <25cm/min No Filter
Very Slow: <1cm/min
Slow: <5cm/min
Medium: <25cm/min
Fast: 1m/min
Very Fast: <5m/min
Display Line1 View1
(first line of text on the first screen
displayed, under the measured value)
Level Level
Ullage
PV Percent
External Temperature
Empty
Distance
Span
Probe Length
Media Level
All menus available in your LWT instrument are explained in more details in the accompanying user’s guide.
¹ When Interface application category is selected
P/ N 3KXL001288U0141 Rev A
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We reserve the right to make technical changes or modify the contents of this
document without prior notice. With regard to purchase orders, the agreed
particulars shall prevail. ABB does not accept any responsibility whatsoever
for potential errors or possible lack of information in this document.
We reserve all rights in this document and in the subject matter and
illustrations contained therein. Any reproduction, disclosure to third parties
or utilization of its contents– in whole or in part–is forbidden without prior
written consent from ABB.
© ABB, 2019
ABB, Inc.
Measurement & Analytics
3400, rue Pierre-Ardouin
Québec (Québec) G1P 0B2
Canada
Phone:
North America: 1 800 858 3847
Worldwide: +1 418 877 8111
E-mail:
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