Abb Pfcl 201CD, Pfcl 201C, Pfcl 201CE User Manual
—
A B B M EA SUREM EN T & ANA LY TI CS
Pressductor Pillowblock Load Cells
Vertical Measuring PFCL 201
User manual
3BSE023881R0101 en Rev I
USE OF SYMBOLS
This publication includes the following symbols with information regarding safety or other important information:
CAUTION
Caution icon indicates important information. Risk of damage to equipment, property or software.
DANGER
Danger icon indicates a hazard which could result in personal injury or even death.
ELECTRICAL
Electrical warning icon indicates the presence of a hazard which could result in electrical shock.
ESD
ESD icon indicates that electrostatic discharge precautions are needed.
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 accordance with the terms of such license.
CE-marking
This product meets the requirements
that the installation is carried out in accordance with the instructions given in this manual.
© Copyright 2004- 2020 ABB. All rights reserved.
specied in the RoHS directive 2011/65/EU and EMC directive 2014/30/EU provided
2
Table of Contents
1 Introduction
1.1 About this Manual......................................................................................... 5
1.2 Disposal and Recycling................................................................................. 5
1.2.1 Environmental Policy..................................................................................... 5
1.2.2 Recycling Electrical and Electronic Equipment, WEEE................................... 5
1.2.3 Recycling the Transport Material................................................................... 6
1.2.4 Disposal of the Product................................................................................. 6
1.3 Function and Design..................................................................................... 6
1.3.1 General......................................................................................................... 6
1.3.2 Load Cells PFCL 201.................................................................................... 7
1.3.3 Principle of Measurement.............................................................................. 7
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..................................................................................... 14
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............................................................................................... 18
3.4 Mounting ................................................................................................... 19
3.5 Cabling for Load Cell PFCL 201CE............................................................. 20
4 Commissioning
4.1 General....................................................................................................... 22
4.2 Preparatory Calculations............................................................................. 22
5 Maintenance
5.1 General....................................................................................................... 23
5.2 Preventive Maintenance.............................................................................. 23
5.3 Spare Parts................................................................................................. 23
6 Fault Tracing
6.1 General....................................................................................................... 25
6.2 Interchangeability........................................................................................ 25
6.3 Fault Tracing Procedure.............................................................................. 25
6.4 Fault Tracing in the Mechanical Installation.................................................. 26
6.4.1 Defective Mounting Surface, Support or Adapter Plates.............................. 26
6.4.2 Force Shunting........................................................................................... 26
6.4.3 Fastening of Load cell and Adapter Plates.................................................. 26
6.4.4 Rolls and Bearings...................................................................................... 26
6.4.5 Driven Roll.................................................................................................. 26
6.5 Fault Tracing of Load Cells, Junction Boxes and wiring............................... 27
A Drawings
A.1 Load Cell PFCL 201C, Dimension Drawing................................................. 29
A.2 Load Cell PFCL 201CE, Dimension Drawing............................................... 30
A.3 Load Cell PFCL 201CD, Dimension Drawing............................................... 31
A.4 Adapter Plate Upper PFCL 201, Dimension Drawing................................... 32
A.5 Adapter Plate Lower PFCL 201, Dimension Drawing................................... 33
Alphabetical index
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
1 Introduction
Introduction
1
1.1 About this Manual
This manual describes the load cells PFCL 201C/201CE/201CD in a Pressductor® Strip 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 Disposal and Recycling
1.2.1 Environmental Policy
ABB is committed to its environmental policy. We strive continuously to make our products environmentally more sound by applying results obtained in recyclability and life cycle analyses. Products, manufacturing process as well as logistics have been designed taking into account the environmental aspects.
Our environmental management system,
environmental policy. However it is on the customer’s responsibility to ensure that local legislation is
followed.
1.2.2
Recycling Electrical and Electronic Equipment, WEEE
certied to ISO 14001, is the tool for carrying out our
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.
3BSE023881R0101 en Rev I 5
Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment, which could otherwise arise from inappropriate
waste handling.
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
1.2.3 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.
1.2.4 Disposal of the Product
When the product is to be disposed, it should be dismantled and the components recycled
according to local regulations.
1 Introduction
1.2.4.1
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.
1.3 Function and Design
1.3.1 General
A complete measuring system normally consists of two load cells, a junction box, one control unit
with two measurement channels and cabling.
6 3BSE023881R0101 en Rev I
SUMMATION A+B
INDIVIDUELL A
DIFFERENS A-B
INDIVIDUELL B
A
Sum A+B
Differential A-B
B
Load cells
Adapter plates
Junction box
Load cell cabling
Control unit
Output signals
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
1 Introduction
Figure 1. Complete Measuring System
1.3.2 Load Cells PFCL 201
The load cells are installed under the roll bearings, where they measure forces at right angles to the
mounting surface.
The reactive force from the strip, which is proportional to the 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).
1.3.3
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 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 strip around the measuring roll.
3BSE023881R0101 en Rev I 7
F
R
T
T
F
V
Wrap
angle
Wrap
angle
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
1 Introduction
Figure 2. Measuring Roll with Force Vectors
8 3BSE023881R0101 en Rev I
Measurement
direction
Mounting screw hole
Sensor
Connector
Mounting screw hole
Technology
Pressductor
R
Fixed cable connector
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
2 Description
Description
2
2.1 General
The load cell is machined from a single piece of stainless steel. The sensors are machined directly
in the piece of steel and are positioned so that they are sensitive to force in the direction of measurement and insensitive in other directions.
The load cell is mounted on a base with four screws, and the bearing housing is mounted on top
of the load cell with four screws.
Every load cell comes calibrated and temperature compensated.
The load cells PFCL 201C/201CE/201CD are available in four measurement ranges, all variants
have the same external dimensions.
The load cell PFCL 201C is equipped with a connector for the pluggable connection cable.
The load cell PFCL 201CE has a
The load cell PFCL 201CD is provided with an acid-proof cable gland with a xed PTFE- insulated
connection cable.
xed connection cable with protective hose.
Figure 3. Load Cell PFCL 201C
Figure 4. Load Cell PFCL 201CE with protective hose for cable
3BSE023881R0101 en Rev I 9
Figure 5. Load Cell PFCL 201CD with insulated cable connection
2.2 Technical Data
Table 1 Technical Data Load Cell PFCL 201
PFCL 201 Type Data Unit
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
2 Description
Nominal Loads
Nominal load in measuring direction, F
nom
Permitted transverse force within
the accuracy, F
1)
(for h = 300
Vnom
C/CD/CE 5 10 20 50 kN
2,5 5 10 25
mm)
Permitted axial load within the
accuracy, F
(for h = 300 mm)
Anom
Extended load in measuring direction with accuracy class ±1%, F
ext
1,25 2,5 5 12.5
7,5 15 30 75
Max permitted load
In the direction of measurement
without permanent change of data,
2)
F
max
In the transverse direction without
permanent change of data, F
Vmax
C/CD/CE 50 100 200
2
)
12,5 25 50 125
500
3)
kN
(for h = 300 mm)
Spring constant C/CD/CE 250 500 1000 2500 kN/mm
Mechanical data
Length C/CD/CE 450 mm
Width C 110
CD 138
CE 156
Height C/CD/CE 124,6
Weight 37 kg
10 3BSE023881R0101 en Rev I
Pressductor
System
h
Pressductor PillowBlock Load Cells, Vertical Measuring PFCL 201, User Manual
2 Description
Material C/CD/CE Stainless steel SIS 2387 DIN X4CrNiMo 165
Accuracy
Accuracy class C/CD/CE ± 0,5 %
Linearity deviation < ± 0,3
Repeatability error < ± 0,05
Hysteresis <0,2
Compensated temperature range +20 - +80 °C
Zero point drift 50 ppm/K
Sensitivity drift 100
Working temperature range -10 - +90 °C
Zero point drift 100 ppm/K
Sensitivity drift 200
Storage temperature range -40 - +90 °C
1) Denitions of directions designations “V”and “A” in FV and
FA are given in Section 2.5.1 Coordinate System.
2) F
max
and F
are allowed at the same time.
Vmax
3) Max. permitted load for the load cell is 10 × F
overload capacity for the total installation may be limited by
the screws.
2.3 Denitions
Nominal load
nom
. The
h= Building Height
Nominal load, F
dimensioned to measure within the specied accuracy class. The load cell is calibrated up to F
, is the maximum load in the measurement direction for which the load cell is
nom
nom
.
Sensitivity
Sensitivity is dened as the difference in output values between nominal load and zero load.
3BSE023881R0101 en Rev I 11
Loading...