ABB PFTL 101 Manuale utente
—
A B B M E A S U R E M E N T & ANALY T I C S
Pressductor Pillowblock Load Cells
Horizontal Measuring PFTL 101
User manual
3BSE009965R0401 en Rev E
USE OF SYMBOLS
This publication includes the following symbols with information regarding safety or other important information:
CAUTION
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DANGER
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ELECTRICAL
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ESD
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Information
Information icon alerts the reader to relevant facts and conditions.
Tip
Tip icon advise how to design your product or how to use a certain function.
NOTICE
The information in this document is subject to change without notice and should not be construed as a commitment by ABB
AB. ABB AB assumes no responsibility for any errors that may appear in this document.
In no event shall ABB AB be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising
from the use of this document, nor shall ABB AB be liable for incidental or consequential damages arising from use of any
software or hardware described in this document.
This document and parts thereof must not be reproduced or copied without ABB AB’s written permission, and the contents
thereof must not be imparted to a third party nor be used for any unauthorized purpose.
The software described in this document is furnished under a license and may be used, copied, or disclosed only in accord-
ance with the terms of such license.
CE-marking
This product meets the requirements specied in the RoHS Directive 2011/65/EU, EMC Directive 2014/30/EU and the Low
Voltage Directive 2014/35/EU provided the installation is carried out in accordance with the instructions given in this manual.
© Copyright 2004-2018 ABB. All rights reserved.
2Table of Contents
1 Introduction
1.1 About this Manual......................................................................................... 5
1.2 Cyber Security Disclaimer............................................................................. 5
1.3 Disposal and Recycling................................................................................. 5
1.3.1 Environmental Policy..................................................................................... 5
1.3.2 Recycling Electrical and Electronic Equipment, WEEE................................... 6
1.3.3 Recycling the Transport Material................................................................... 6
1.3.4 Disposal of the Product................................................................................. 6
1.4 Function and Design..................................................................................... 7
1.4.1 General......................................................................................................... 7
1.4.2 Loads cells PFTL 101................................................................................... 7
1.4.3 Principle of Measurement.............................................................................. 8
2 Description
2.1 General......................................................................................................... 9
2.2 Technical Data............................................................................................ 10
2.3 Denitions................................................................................................... 11
2.4 Measuring principle of the sensor................................................................ 14
2.5 Mounting Arrangement............................................................................... 14
2.5.1 Coordinate System..................................................................................... 15
2.5.2 Horizontal Mounting.................................................................................... 15
2.5.3 Inclined Mounting........................................................................................ 16
2.6 The Electrical Circuit................................................................................... 17
3 Installation
3.1 General....................................................................................................... 18
3.2 Unpacking.................................................................................................. 18
3.3 Preparations............................................................................................... 19
3.4 Adapter Plates............................................................................................ 19
3.5 Mounting.................................................................................................... 19
3.6 Cabling....................................................................................................... 21
4 Commissioning
4.1 General....................................................................................................... 23
4.2 Preparatory Calculations............................................................................. 23
5 Maintenance
5.1 General....................................................................................................... 24
5.2 Preventive Maintenance.............................................................................. 24
5.3 Spare Parts................................................................................................. 24
6 Fault Tracing
6.1 General....................................................................................................... 26
6.2 Interchangeability........................................................................................ 26
6.3 Fault Tracing Procedure.............................................................................. 26
6.4 Fault Tracing in the Mechanical Installation.................................................. 27
6.4.1 Defective Mounting Surface, Support or Adapter Plates.............................. 27
6.4.2 Force Shunting........................................................................................... 27
6.4.3 Fastening of Load cell and Adapter Plates.................................................. 27
6.4.4 Rolls and Bearings...................................................................................... 27
6.4.5 Driven Roll.................................................................................................. 27
6.5 Fault Tracing of Load Cells, Junction Boxes and wiring............................... 28
A Drawings
A.1 Load Cell PFTL 101A (0,5- 2,0 kN), Dimension Drawing............................. 30
A.2 Load Cell PFTL 101AE (0,5- 2,0 kN), Dimension Drawing........................... 31
A.3 Load Cell PFTL 101AER (0,5- 2,0 kN), Dimension Drawing......................... 32
A.4 Load Cell PFTL 101B (2,0- 20 kN), Dimension Drawing.............................. 33
A.5 Load Cell PFTL 101BE (2,0- 20 kN), Dimension Drawing............................ 34
A.6 Load Cell PFTL 101BER (2,0- 20 kN), Dimension Drawing.......................... 35
A.7 Adapter Plate Lower PFTL 101A/AE/AER, Dimension drawing.................... 36
A.8 Adapter Plate Upper PFTL 101A/AE/AER, Dimension drawing.................... 37
A.9 Adapter Plate Lower PFTL 101B/BE/BER, Dimension drawing................... 38
A.10 Adapter Plate Upper PFTL 101B/BE/BER, Dimension drawing................... 39
Alphabetical index
1Introduction
1.1 About this Manual
This manual describes load cells PFTL 101A, PFTL 101AE, PFTL 101AER, PFTL 101B, PFTL
101BE and PFTL 101BER in a Pressductor® Tension Measuring System.
The purpose of this manual is to describe the general function and design of the load cells and also
to be a guidance at installation, commissioning, preventive maintenance and fault tracing.
1.2 Cyber Security Disclaimer
This product has been designed to be connected and communicate data and information via a
network interface which should be connected to a secure network. It is the sole responsibility of
the person or entity responsible for network administration to ensure a secure connection to the
network and to take the necessary measures (such as, but not limited to, installation of rewalls,
application of authentication measures, encryption of data, installation of antivirus programs, etc.)
to protect the product and the network, its system and interface included, against any kind of
security breaches, unauthorized access, interference, intrusion, leakage and/or theft of data or
information. ABB is not liable for any such damages and/or losses.
1.3 Disposal and Recycling
1.3.1 Environmental Policy
ABB is committed to its environmental policy. We strive continuously to make our products envi-
ronmentally more sound by applying results obtained in recyclability and life cycle analyses. Prod-
ucts, manufacturing process as well as logistics have been designed taking into account the envi-
ronmental aspects.
Our environmental management system, certied to ISO 14001, is the tool for carrying out our
environmental policy. However it is on the customer’s responsibility to ensure that local legislation is
followed.
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
1 Introduction
3BSE009965R0401 en Rev E 5
1.3.2 Recycling Electrical and Electronic Equipment, WEEE
The crossed – out wheeled bin symbol on the product(s) and / or accompanying documents
means that used electrical and electronic equipment (WEEE) should not be mixed with general
household waste.
If you wish to discard electrical and electronic equipment (EEE), in the European Union, please
contact your dealer or supplier for further information.
Outside of the European Union, contact your local authorities or dealer and ask for the correct
method of disposal.
Disposing of this product correctly will help save valuable resources and prevent any potential neg-
ative effects on human health and the environment, which could otherwise arise from inappropriate
waste handling.
1.3.3 Recycling the Transport Material
ABB designs all transport material to be recyclable where practical. The recycling of the transport
material depends on the material type and availability of local recycling programs.
After receiving the system into the site, the package and the transportation locking have to be
removed. Recycle the transport material according to local regulations.
1.3.4 Disposal of the Product
When the product is to be disposed, it should be dismantled and the components recycled
according to local regulations.
1.3.4.1 Dismantling and Recycling of the Product
Dismantle and recycle the components of the product according to local regulations.
CAUTION
Some of the components are heavy! The person who performs the dismantling of
the system must have the necessary knowledge and skills to handle heavy
components to avoid the risk of accidents and injury from occurring.
• Load cell: These parts are made of structural steel, which can be recycled according to
local instructions. All the auxiliary equipment, such as cabling or hoses must be removed
before recycling the material.
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
1 Introduction
6 3BSE009965R0401 en Rev E
1.4 Function and Design
1.4.1 General
A complete measuring system normally consists of two load cells, a junction box, one control unit
with two measurement channels and cabling.
A
B
SUM A+B
DIFFERENCE A-B
Load cell
Junction box Control unit
Load cell cabling
Adapter plates
Output signals
Figure 1. Complete Measuring System
1.4.2 Loads cells PFTL 101
The load cells are installed under the roll bearings, where they measure forces parallel to the
mounting surface.
The reactive force from the web/strip, which is proportional to the web/strip tension, is transferred
to the load cells via the roll and the bearings
The load cells are connected to the control unit via a junction box. The control unit converts the
load cell signals to DC voltages that are proportional to the reaction force. Depending on which
control unit is chosen, it is possible to have the analog signals for the two individual load cells (A
and B), the sum of the load cell signals (A+B), and/or the difference between the load cell signals
(A-B).
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
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3BSE009965R0401 en Rev E 7
1.4.3 Principle of Measurement
The load cell only measures force in the direction FR. The measurement force may be positive or
negative. The load cell is normally installed under the roll bearings. When there is a web/strip in
tension over the roll, the tension (T) gives rise to two force components, one in the direction of
measurement of the load cell (FR) and one at right angles (FV).
The measuring force depends on the relationship between the tension (T) and the wrap angle
formed by the web/strip around the measuring roll.
T
T
FR
FV
W
a
p
an
Wrap angle
Figure 2. Measuring roll with Force Vectors
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
1 Introduction
8 3BSE009965R0401 en Rev E
2Description
2.1 General
The load cells in the PFTL 101 family are available in six different measuring ranges from 0.5 to 20
kN and two different sizes (see 2.2 Technical Data). Each load cell is individually calibrated and
temperature compensated.
The load cells are usually mounted and xed to a base and a bearing housing with six screws, four
on one side of the load cells and two on the opposite side.
For all load cells of type PFTL 101 the load cell house is machined from a single block of steel.
A sensor is then welded into the load cell house and oriented so that it is sensitive to force in the
direction of measurement and insensitive in other directions.
The load cell types PFTL 101A, PFTL 101AE, PFTL 101B and PFTL 101BE are made of stainless
steel.
PFTL 101A and PFTL 101B are equipped with a connector for the pluggable connection cable.
PFTL 101AE and PFTL 101BE are equipped with a xed connection cable.
Load cell types PFTL 101AER and PFTL 101BER are specially designed for installation in corrosive
environment. They are made of acid resistant stainless steel and they also have a xed connection
cable.
Dimensions for all load cell types are given in A Drawings.
Connector or fixed connection cable
Measuring direction
Figure 3. Load cells PFTL 101 A/AE/AER
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
3BSE009965R0401 en Rev E 9
Connector or fixed connection cable
Figure 4. Load cells PFTL 101 B/BE/BER
2.2 Technical Data
Table 1 Technical Data Load Cell PFTL 101
PFTL 101 Type Data Unit
Nominal Loads 1)
Nominal load in meas-
uring direction, Fnom
A/AE/AER 0,5 1,0 2,0 kN
B/BE/BER 2,0 5,0 10 20
Permitted transverse
force within the accu-
racy, FVnom
A/AE/AER 5 10 10
B/BE/BER 30 30 30 40
Permitted axial load
within the accuracy,
FAnom
A/AE/AER 2 5 5
B/BE/BER 5 10 10 10
Overload capacity
Max. load in measure-
ment direction without
permanent change of
data, Fmax
A/AE/AER 2,5 5 10 kN
B/BE/BER 10 25 50 80
Spring constant A/AE/AER 32 65 130 kN/mm
B/BE/BER 130 325 650 1300
Mechanical data
Length A/AE/AER 230 230 230 mm
B/BE/BER 360 360 360 360
Width A/AE/AER 84 84 84
B/BE/BER 104 104 104 104
Height A/AE/AER 125 125 125
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
10 3BSE009965R0401 en Rev E
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