Kistler 5028A Series User manual

Instruction
Manual
002-895e-08.22
mICA – miniature
Industrial Charge
Amplier with IO-Link,
Type 5028A...
Valid from
Firmware Version V2.03

Thank you for choosing a Kistler quality product characterized
by technical innovation, precision and long life.
Information in this document is subject to change without
notice. Kistler reserves the right to change or improve its
products and make changes in the content without obligation
to notify any person or organization of such changes or
improvements.
©2017 … 2022 Kistler Group. All rights reserved. Except
as expressly provided herein, no part of this manual may
be reproduced for any purpose without the express prior
written consent of Kistler Group.
Kistler Group
Eulachstrasse 22
8408 Winterthur
Switzerland
Tel. [phone]
[e-mail]
www.kistler.com
Foreword
Page 1002-895e-08.22

Content
Total pages 26
1. Introduction ................................................................................................................................ 3
1.1 For your safety....................................................................................................................3
1.2 Electromagnetic Compatibility (EMC).................................................................................4
1.3 Warnings and their Relevance............................................................................................4
1.4 Disposal Instructions for Electrical and Electronic Equipment............................................4
1.5 Software Upgrades and Updates .......................................................................................5
2. Fundamentals............................................................................................................................. 6
2.1 Piezoelectric Measurement ................................................................................................6
2.2 TheIndustrialChargeAmplier ..........................................................................................7
3. Description of the Type 5028A Charge Amplier .................................................................... 9
3.1 General...............................................................................................................................9
3.2 Ordering information.........................................................................................................10
3.3 Commissioning ................................................................................................................10
3.3.1 Dimensions and LED Indicators..........................................................................10
3.3.2 Block diagram......................................................................................................11
3.3.3 Installation ...........................................................................................................11
3.3.4 Connecting Sensors ...........................................................................................12
3.3.5 Network and Power Connection..........................................................................12
3.3.6 EMC and Ground Loops......................................................................................12
3.4 Analog Operation without IO-Link Master.........................................................................13
3.5 IO-Link Operation .............................................................................................................14
3.6 Cyclicdata:SmartSensorProle2ndeditionSSP4.3.1 ..................................................14
3.7 Acyclic data: User Parameters .........................................................................................16
3.8 Firmware Downgrade for compatibility to SSP3.4 ............................................................19
4. Maintenance and Diagnostics ................................................................................................ 21
4.1 Services............................................................................................................................21
4.2 Drift ...................................................................................................................................21
5. Appendix................................................................................................................................... 24
A. Technical data...................................................................................................................24
6. EC Declaration of Conformity................................................................................................. 26
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1. Introduction
Please take the time to thoroughly read this instruction
manual. It will help you with the installation, maintenance,
and use of this product.
To the extent permitted by law Kistler does not accept any
liability if this instruction manual is not followed.
Kistlero󰀨ersawiderangeofproductsforuseinmeasuring
technology:
Piezoelectric sensors for measuring force, torque,
strain, pressure, acceleration, shock, vibration and
acoustic emission
Strain gage sensor systems for measuring force and
torque
Piezoresistive pressure sensors and transmitters
Signal conditioners, indicators and calibrators
Electronic control and monitoring systems as well as
softwareforspecicmeasurementapplications
Data transmission modules (telemetry)
Kistler also develops and produces measuring solutions
fortheapplicationeldsengines,vehicles,manufacturing,
plastics and biomechanics sectors.
Our product and application brochures will provide you with
an overview of our product range. Detailed data sheets are
available for almost all products.
If you need additional help beyond what can be found either
online or in this manual, please contact Kistler’s extensive
support organization.
1.1 For your safety
The device left the factory in a perfectly safe condition. To
maintain this condition and ensure safe operation, follow
the directions and warnings in this Instruction Manual and
on the device.
Also follow local safety regulations governing the handling
of electrical and electronic equipment.
Ifithastobeassumedthattheampliercannolongerbe
operatedsafely,switchito󰀨andsecureittoensureitcannot
be switched on again inadvertently.
Safe operation is no longer possible
if the equipment is visibly damaged,
if it is not working properly,
after prolonged storage under adverse conditions,
after being severely impacted in transit.
Introduction
Page 3002-895e-08.22

If any of the above indicate that safe operation is no longer
ensured, the device must be immediately sent to the
responsible Kistler sales center or distributor for repair.
1.2 Electromagnetic Compatibility (EMC)
The Type 5028A… charge amplier is manufactured in
conformity with CE requirements. It meets the electromagnetic
compatibility safety requirements to EN 61326-1 1-2013
(Immunity) and EN 61326-1 1-2013 (Interference).
1.3 Warnings and their Relevance
Disregard of the following precautions can lead to malfunctions
or damage to system components, environment or people
(see table below).
Symbol Disregard may have consequence
WARNING
Mechanical defects or with unpredictable consequence (might
endanger material or people).
CAUTION
Indicates a caution or warning notice.
NOTE
Indicates a tip or important information.
1.4 Disposal Instructions for Electrical and Electronic Equipment
Do not discard old electronic instruments in municipal trash.
For disposal at end of life, please return this product to
an authorized local electronic waste disposal service or
contactthenearestKistlerInstrumentsaleso󰀩ceforreturn
instructions.
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1.5 Software Upgrades and Updates
Kistler may from time to time supply upgrades or updates
for embedded software. Such upgrades or updates must
always be installed.
Kistler declines any liability whatsoever for any direct or
consequential damage caused by products running on
embedded software which has not been upgraded or updated
with the latest software supplied.
This device does allow Firmware update by customer, using
any standard IO-Link tool with Firmware update functionality.
The latest Firmware Version is listed on the product website
at www.kistler.com. Please feel free to get in contact with
your Kistler Service Center in order to check options to
update your device to the latest Firmware.
Introduction
Page 5002-895e-08.22

2. Fundamentals
The typical measuring chain consists of a piezoelectric sensor
withchargeoutput,achargeamplierType5028Aanda
system for signal processing.
In industrial applications, cycle command functionality is
usually implemented with a programmable logic controller
(PLC), using an IO-Link Master to connect conveniently to
theamplier.
2.1 Piezoelectric Measurement
Sensors
Piezoelectric sensors directly convert mechanical quantities,
such as force, pressure and acceleration, into an electric
charge. This charge is proportional to the force acting on the
quartz crystal in the sensor. The sensitivity of the sensors
is given in pC/M.U.
Figure 1: Force F on the piezoelectric sensor
Notes on piezoelectric measurement
When working with piezoelectric instruments, please note
that these di󰀨er from other familiar electrical measuring
instruments. The applicable criteria are di󰀨erent from
those for conventional current or voltage measurement,
for example. When unpacking the sensors and the special
cables ensure that their connectors remain clean and dry, in
order to maintain their high insulation resistance. In particular,
theTeoninsulatorofallconnectorpairsintheinputcircuit
must be kept absolutely clean and must not be touched
withyourngers.Onlyuseunadulteratedcleaningagents,
for example Type 1003 cleaning spray from Kistler or white
spirits, on a clean, lint-free paper towel.
High insulation sensor cables
Only high insulation, low noise sensor cables, as per Kistler
data sheets 1631C_000-346 and 1601B_000-352, may be
used for connecting the sensors. Normal commercial coaxial
cables generate triboelectricity as a result of movement,
which would falsify the measurement result.
Connecting piezoelectric sensors in parallel
When several sensors are connected in parallel, the charge
ampliermeasuresthesumofallcharges.Forexample,
the four quartz force links of a measuring platform can be
connected in parallel in order to measure the total force.
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Polarity
Kistlerdenespolarityinsuchawaythatanincreasein
compressive force in a force sensor produces a negative
charge.Thechargeamplierinvertsthesensorsignaland
in this case generates a positive output voltage.
Measuring range
We recommend setting the widest measuring range at the
start of measurement or for very intermittent operation.
Normal overdriving by overly-large charge signals does not
damagethechargeamplier.Iftheamplierisoverdriven
by a factor of more than 10, the charge can produce an
unacceptably high voltage. The amplitude of the voltage
depends on the input charge, the total input capacitance
(sensor and cable) and the range capacitor.
Measure mode
Themajoradvantageofthechargeamplierprincipleisthat
even quasistatic measurement can be carried out perfectly.
Staticmeasurementislimitedbythenitetimeconstantin
thenegativefeedbackcircuit,aswellasbydrifte󰀨ects(for
example,inputcurrent)inthechargeamplier.
2.2 The Industrial Charge Amplier
In this context it should be noted that the term “charge
amplier”doesnotmeanadevicethatampliesacharge
Q1 to a value Q2. We use it in the sense of a device for
converting the charge Q into a voltage Ua.Achargeamplier
is therefore a charge-to-voltage converter. It employs the
circuit principle of the integrator. Its key components are
an operational amplier with very high internal gain and
extremely high input insulation (Rg) as well as a high-
precision, low-loss negative feedback capacitor (Cg).
Figure 2: Equivalent circuit diagram of charge amplifier
with charge source
The following approximate formula is adequate for calculating
the voltage signal in most cases:
Ua= -Q/Cg
Fundamentals
Page 7002-895e-08.22

At the end of each measuring cycle the negative feedback
capacitor is discharged by means of the Reset command
and the output signal is set to zero in order to prevent zero
drift during measurement. The insulation resistance of the
negative feedback capacitor Cgdeterminesthelowercut-o󰀨
frequencyofthechargeamplieraccordingtotheformula
fu=1/(2τ·Rg·Cg)
The negative feedback capacitor can also be discharged
according to a time constant. This option is available in
thedevice witha preconguredresistor butcan alsobe
conguredwithadi󰀨erenttimeconstantonrequest.
Very stringent requirements are imposed on the stability, low
input current and high input insulation of such an integrator,
as the charges to be measured are often just a few pC. As a
result of the high charge sensitivity and high input resistance,
the sensitivity to noise is also relatively high.
In industrial applications, the sensitivity to interference can
bereducedifthechargeamplierismountedascloseas
possible to the sensor. The signal can then be processed
furtheraway,astheoutputcircuitofthechargeamplieris
low resistance and hence insensitive to interference
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