Lorenz SI-RS485 User manual

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone. [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
1/13
Ampliers
Operating Instructions
2 Channel RS485-Sensor-Interface SI-RS485

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
2/13
Table of Content
1 Imprint / Copyright 3
2 Important Notes / Keeping 3
2.1 General Informations 3
2.2 Intended Use 5
2.3 General Hazards in the Event of non-compliance with the Safety Instructions 5
2.4 Residual Hazards 5
3 Safety and Warning Notices 5
3.1 Symbols 5
3.2 Health Protection and Safety 6
3.3 Conversions and Changes 6
3.4 CE Marking 6
4 Preamble 6
4.1 Product Description 6
4.2 Safe and Correct Use 7
5 Technical Details 7
 5.1 CongurationoftheConnections 7
5.2 Adjustment of the Second-Order Low Pass Filter for each Sensor Channel 7
5.2.1. Changing via VS3 7
5.2.2 Changing via LCV-USB-VS 8
5.2.3 Changing via Self-programmed (own) Software 8
6 Pin Assignments 8
6.1 Pin Assignment for Strain Gauge Sensors with mV Signal 8
6.2 Pin Assignment for Active Sensors with ±5V or ±10V Signal 8
6.3 Pin Assignment for Active Current Sensors with mA Signal 9
6.4 Connection Assignment for the RS485-Interface 9
7 Other Application Examples 9
7.1 Multi-Component Sensor M-2354 Force and Torque (strain gauge / strain gauge) 9
7.2 Displacement Sensor Potentiometric (supplied from the SI-RS485) 10
8 Debugging 10
9 Technical Data 11
9.1 Options 12
9.2 Accessories 12
9.3 Calibrations mV/V 12
10 Equipment disposal 12
11 Reference Information 13

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
3/13
1 Imprint / Copyright
© 2019 Lorenz Messtechnik GmbH, D-73553 Alfdorf
These operating instructions do not constitute an agreed quality agreement or durability guarantee
within the meaning of § 443 BGB (German Civil Code).
Technical changes, errors and misprints excepted.
No part of this publication may be reprinted without the written permission of Lorenz Messtechnik
GmbH, Alfdorf.
2 Important Notes / Keeping
Before installing and commissioning the device, these operating instructions, and in particular the
corresponding safety instructions, must be read. The device may only be used as described in this
manual to prevent injury or damage.
The operating instructions have been drawn up in accordance with EN 82079-1 and must be kept in
a safe place.
2.1 General Informations
 Theseoperatinginstructionsareintendedfortechnicallyqualiedpersonnelwhohaveappropriate
 knowledgeintheeldofmeasurementandcontroltechnology.Qualiedpersonnelarepersonswho
are familiar with the installation, operation, maintenance and repair of the device and have the appro-
 priatequalications.Thepersonnelmusthaveknowledgeofthelegalandsafetyregulationsandbe
able to apply them.
 Thedevicemayonlybeusedbyqualiedpersonnelinaccordancewiththetechnicaldatainconnec-
tion with the safety regulations and rules set out below. During operation, the legal and safety regula-
tions required for the respective application must also be observed. This also applies analogously to
the use of accessories.
The exact information about all safety instructions and warnings contained in these operating in-
structions as well as their correct technical implementation are prerequisites for the safe installation,
commissioning, safe operation and maintenance of Lorenz Messtechnik GmbH devices. All measures
 mustonlybecarriedoutbyqualiedpersonnel.Allpersonsinvolvedintheprojectplanning,instal-
lation and operation of Lorenz Messtechnik GmbH devices must be familiar with the safety concepts
 intheautomationtechnologyandbequaliedintheabove-mentionedsense.
For reasons of clarity, these operating instructions cannot cover all details and information and not all
applications for the handling of devices from Lorenz Messtechnik GmbH. Nor can all conceivable
types of installation, operation and maintenance must be taken into account.

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
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If further information is desired or required, or if special problems occur which are not described in
detail in these operating instructions, please contact Lorenz Messtechnik GmbH.
The devices of Lorenz Messtechnik GmbH may only be operated in accordance with the applications
described in these operating instructions. Built-in devices may only be operated if they are properly
installed.
By connecting and commissioning the device, the purchaser accepts the General Terms and Con-
ditions of Sale and Delivery of Lorenz Messtechnik GmbH. Furthermore, the buyer accepts the possi-
ble incompleteness of this operating manual and that the information contained therein may not be
complete and informations are without guarantee. Errors, misprints and changes excepted.
Intended Use, not intended Use
A device from Lorenz Messtechnik GmbH is used for display, processing and control of processes. It
must not be used as the sole means of averting dangerous conditions on machines and systems.
Machines and systems must be designed in such a way that faulty states cannot lead to a dangerous
situation for the operating personnel (e. g. through independent limit value-switches or mechanical
interlocks). In particular, it must be ensured that a the device, its malfunction or its failure does not
lead to damage to property or a loss of that can lead to danger to people. It is also important to prevent
the precautions that are taken from being cannot be circumvented for the safety of a plant. Emergen-
 cystopdevicesmustremaine󰀨ectiveatalltimes.
Installation Instructions
Devices from Lorenz Messtechnik GmbH must be installed and connected in compliance with the
relevant DIN and VDE standards. They must be installed in such a way that unintentional operation
 issu󰀩cientlyexcluded.Topreventaninterruptionofthesupplyandsignallinesfromleadingtoan
 undenedor dangerousstate, appropriatehardware andsoftware safetyprecautions mustbe ob-
served.Supply and signallines mustbeinstalled insuch a waythat theydonot interferewith the functionof
the Lorenz Messtechnik GmbH by interfering signals (such as inductive or capacitive interferences).
Notes on Malfunctions, Maintenance and Repair
The devices do not contain any parts that require or can be serviced by the user. Repairs may only
be carried out by Lorenz Messtechnik GmbH. If it can be assumed that safe operation of the device is
no longer possible, it must be put out of operation immediately and secured against unintentional
operation. This applies in particular if:
• The device is visibly damaged
• The device is no longer functional
• Parts of the appliance are loose
• The connecting lines are visibly damaged
In addition, we would like to point out that all obligations of Lorenz Messtechnik GmbH arise exclusi-
vely from the respective purchase contract in which the warranty is conclusively stated.

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
5/13
2.2 Intended Use
Devices from Lorenz Messtechnik GmbH are to be used exclusively for measuring tasks and the di-
rectly associated control tasks. Any use beyond thisis considered to be improper.
The valid legal and safety regulations must be observed during measurement. The instrument is not
a safety component in the sense of its intended use and it is transported and stored properly. The
installation and commissioning, the operation and the disassembly must be carried out professionally.
2.3 General Hazards in the Event of non-compliance with the Safety
Instructions
The device complies with the current safety requirements. Residual dangers can emanate from the
device if it is improperly used and operated by untrained personnel. Any person entrusted with the
installation, operation, maintenance and repair of the device must read and understand the operating
instructions and, in particular, the safety instructions.
Incorrect use (e. g. by untrained personnel) may result in residual hazards. The operating instructions
must be read and understood by all persons involved in the installation, commissioning, maintenance,
repair, operation and dismantling of the device is trusted. The device must not be used if visible da-
mage is visible.
2.4 Residual Hazards
The system planner, equipment supplier and operator must plan, implement and be responsible for
the safety of the equipment. Other hazards must be minimized. The residual dangers of the measure-
ment technology must be pointed out and human error must be taken into account. The design of the
system must be suitable for avoiding hazards - a hazard analysis must be carried out for the system.
The applicable regulations and laws are as follows to note.
3 Safety and Warning Notices
3.1 Symbols
Warning: There is a risk of injury to persons. Damage to the machine is possible. The
accident prevention regulations of the employer‘s liability insurance association must
be observed.
Note: Important points to be observed. A note that indicates a possible danger of da-
mage to the product, process, person or the environment.
Additional information or reference to other important detailed information.

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
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3.2 Health Protection and Safety
To ensure that our products are safe and do not pose a health hazard, the following points must be
observed:
1. Read all relevant sections of this manual carefully before starting work.
2. All warning signs on containers and packaging must be observed.
3. Installation, operation, maintenance and repair work may only be carried out by suitably trai-
ned personnel and in accordance with the instructions given. If one of these instructions is not
followed, the user of the product bears full responsibility for any consequences that may occur.
4. Disconnect the appliance from any power supply before opening it.
5. The safety instructions must be strictly observed in order to avoid damage to property and
bodily injury - possibly even fatal ones.
3.3 Conversions and Changes
 ThedevicemaynotbemodiedintermsofdesignorsafetywithouttheexpressconsentofLorenz
 MesstechnikGmbH.Anymodicationexcludesanyliabilityonourpartfordamagesresultingthere-
 from.Repairsandmodicationsareprohibited.
3.4 CE Marking
With the CE marking, Lorenz Messtechnik GmbH guarantees that its product meets the requirements
of the relevant EC directives.
4 Preamble
4.1 Product Description
 TheSI-RS485isanamplierwhichprocessesanalogousmeasuredvaluesandconvertsthesesig-
nals into digital signals. These measured data can be retrieved by the PC by means of the RS485-Inter-
face. The current supply occurs via a separate power supply which is included in delivery.
Required output voltage: 12 ... 30V
Required power supply: 600 mA
The SI-RS485 is suitable for the connection and simultaneous value acquisition of two sensors. De-
 pendingontheSI-RS485model,respectivelyfourdi󰀨erenttypesofsensorsignalscanbecaptured
 (forspecicationsseedatasheet):
Strain gauge signals: ±3 mV/V (corresponds ±30000 digits)
Active signals with voltage input: ±5V (corresponds ±25000 digits)
Active signals with voltage input: ±10V (corresponds ±25000 digits)
Active signals with current input: 0 ... 20 mA (corresponds 0 ... 20000 digits)
Active signals with current input: 4 ... 20 mA (corresponds 0 ... 20000 digits)
 Theampliertypeandtheresolutionarestatedonthetypelabel,atypechangeisonlypossibleby
the manufacturer. Hence, only the corresponding sensor type can be connected.

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
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Warning: Please pay attention to the signal type of the sensor when connecting the sensor.
Connectingthesensorwiththewrongsignaltypecandamagetheamplierandthesensor.
The measured values are issued in digits (16 bit signed integer format) with leading signs (see page
6 in brackets).
 IftheSI-RS485isadjustedtoaspecicsensor,theoutputvaluewillbestatedonthetestcerticate.
 IftheSI-RS485isnotadjustedtoaspecicsensor,theoutputvaluesareadjustedasstatedonpage6.
In this case, the output values are adjusted with a high-precise reference.
The evaluation occurs by the VS3 software which contains following functions:
• CongurationpossibilitiesfortheVS3
• Storage of sensor-related scaling and adjustment data
• Display for the presentation of measured data
(actual value, tare value, minimal value and maximal value)
• Presentation of the measured data in a diagram
• StorageofmeasureddatainCSV-format(outputcongurable)
• Storage of the diagram in BMP-format (output size adjustable)
• Print-outofthediagram(outputsizedened)
• Presentation of the sensor information
 Thecommunicationprotocolisdescribedindocumentno.090110,“Aexiblecommandsetfordigital
sensors and interfaces” which states how to activate the SI-RS485 through own software.
4.2 Safe and Correct Use
Warning: Observe the correct sensor adjustment.
ConsiderthecorrectVS3conguration.
Chooseasignicantleidentication/prexwhenstoringmeasureddata.
Fasten housing, ground, connect power supply, protect from splash water and do not pull
the cable.
5 Technical Details
 5.1 CongurationoftheConnections
There is no maintainable connection inside the SI-RS485 housing. The connection of the power sup-
ply unit occurs on the side of the housing. The sensors and the digital interface can be connected
through sockets as well.
5.2 Adjustment of the Second-Order Low Pass Filter for each Sensor
Channel
5.2.1. Changing via VS3
 IfaSI-RS485wasconnected,thesoftwareo󰀨ersthisoptioninthetabformeasurementadjustments.

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
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5.2.2 Changing via LCV-USB-VS
 Intheadvancedmode,thesoftwareo󰀨erstabsforconguration.Thelterfrequenciescanbeadjus-
 tedincongurationblockSTATOR_OPERATION.
5.2.3 Changing via Self-programmed (own) Software
 TheadjustmentforchannelAisstoredinbytes13and14ofthecongurationblock“STATOR_OPE-
RATION”. The value for channel B is stored in bytes 15 and 16. Each byte represents a 16-bit value
 andcorrespondstothecuto󰀨-frequencyaccordingfollowingchart:
 Pleaseconsiderthatcurrentlyadjustedcuto󰀨-frequencywillbeactiveafterrebooting,only.
For further information regarding programming with own software we refer to document 090110,
 Lorenzprotocol“Aexiblecommandsetfordigitalsensorsandinterfaces”.
6 Pin Assignments
6.1 Pin Assignment for Strain Gauge Sensors with mV Signal
6.2 Pin Assignment for Active Sensors with ±5V or ±10V Signal
Range of values
(decimal) Value (hexadecimal) Adjustedcuto󰀨- frequency
0≤X≤30 0x001E 30 Hz
31≤X≤300 0x012C 300 Hz
301≤X≤1000 0x03E8 1000 Hz
1001≤X≤65536 0x0BB8 3000 Hz
Description Pin (6 pin socket) Remark
0V / GND 1 Ground reference for 5V excitation
5V 2 Excitation for 5V strain gauge sensors
Shield 3 Do not connect shield with sensor housing
Signal + 4 Positive signal input
Signal - 5 Negative signal input
Control signal 6 If available in sensor
Description Pin (12 pin socket) Remark
0V / GND E Ground reference for 12V supply
12V F Supply for 12V active sensors
Signal + C Signal input
Signal - D Relating to signal input (internally 0V / GND)
Control signal K If available in sensor
Shield M Do not connect shield with sensor housing

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
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Technical changes, errors and misprints excepted. 090325c_SI-RS485
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6.3 Pin Assignment for Active Current Sensors with mA Signal
6.4 Connection Assignment for the RS485-Interface
7 Other Application Examples
7.1 Multi-Component Sensor M-2354 Force and Torque
(strain gauge / strain gauge)
The multi-component sensor M-2354 is directly connec-
ted to the SI-RS485/DMS/DMS with both outputs. The
system allows simultaneous recording of force-torque-
courses which chronologically refer to each other.
Description Pin (12 pin socket) Remark
0V / GND E Ground reference for 12V supply
12V F Supply for 12V active sensors
Signal + C Signal input
Signal - D Relating to signal input (internally 0V / GD)
Control signal K If available in sensor
Shield M Do not connect shield with sensor housing
Description Pin (12 pole socket) Remark
0V / GND E Ground reference for 5V and 12V supply
RS485 (A) L Signal RS485
RS485 (B) J Signal RS485
Shield M Do not connect shield with sensor housing

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
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7.2 Displacement Sensor Potentiometric (supplied from the SI-RS485)
A SI-RS485 with minimum U5-input is suitable.
The accuracy of the displacement measurement
is depending on the quality of the reference vol-
tage.
With this set-up, arbitrary measuring variables,
depending on displacement measurements, can
be recorded and referred to each other.
8 Debugging
 Thischarthelpstondfrequenterrorsandthemeasuresfordebugging.
Error Possible Cause Debugging
A connection to the SI-RS485
is not possible
Power supply not connected • Connect power supply
Supply voltage is shortened • Fix the short circuit
Output signal is at the upper
or lower modulation limit
Active sensor is connected
to the strain gauge input
• Check on type label for which in-
puttypehasbeenconguredfor
the applied sensor connection
Supply voltage connected to
sensor input
• Check/correct the pin assign-
ment
Outputsignaluctuates
(strain gauge)
Open sensor input • Connect sensor
Cut-o󰀨frequencyadjust-
ment not correctly set
• Settherightcut-o󰀨frequency
0V / GND
R > 100
Signal+
5V reference
controller
12V
Output 0 ... 25000 Digits

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
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9 Technical Data
1Mainsadapterincludedinscopeofdeliveryatrstorder
RS485-Sensor-Interface SI-RS485
Type SI-RS485/DMS/
DMS SI-RS485/U5/U5 SI-RS485/U10/ U10 SI-RS485/I20/I20 SI-RS485/DMS/ U5
Article-No. 113261 113262 113263 113264 113265
Input range 2 x ±3 mV/V 2 x ±5V 2 x ±10V 2 x 0/4 ... 20 mA ±3 mV/V; ±5V
Measured values ±30000 digits ±25000 digits ±25000 digits 0 ... 20000 digits ±30000 digits;
±25000 digits
Resolution 1 mV/V ≙10000
digits 1V ≙5000 digits 1V ≙2500 digits 1 mA ≙1000 digits
1 mV/V ≙10000
digits;
1V ≙5000 digits
Type SI-RS485/DMS/U10 SI-RS485/DMS/
I20 SI-RS485/U5/U10 SI-RS485/U5/I20 SI-RS485/U10/I20
Article-No. 113266 113267 113268 113269 113270
Input range ±3 mV/V; ±10V ±3 mV/V;
0/4 ... 20 mA ±5V; ±10V ±5V; 0/4 ... 20 mA ±10V; 0/4 ... 20 mA
Measured values ±30000 digits;
±25000 digits
±30000 digits;
0 ... 20000 digits ±25000 digits ±25000 digits; 0 ... 20000 digits
±25000 digits;
0 ... 20000 digits
Resolution
1 mV/V ≙10000
digits;
1V ≙2500 digits
1 mV/V ≙10000
digits;
1 mA ≙1000
digits
1V ≙5000 digits;
1V ≙2500 digits
1V ≙5000 digits;
1 mA ≙1000
digits
1V ≙2500 digits;
1 mA ≙1000
digits
Evaluation Side
Zero point 0 digits
Output format 16 bit signed int.
Input resistance >1MΩ(onlyforDMS/U5/U10)
Rated burden 62Ω(onlyforI20)
Second-orderlow-passlter 30/300/1000/3000 Hz
Measuring rate max. 2500 meas./s
Temperature drift 4 bit/10 K
Linearity error ±32 digits
Accuracy ±32 digits
Supply voltage of
mains adapter1100 ... 240VAC
Output mains adapter 24VDC, 1.25 A
Supply voltage SI-RS485 12...30VDC≤600mA
Sensor Side
Sensor supply Straingauges(DMS):5V≤20mA
U5/U10/I20:12V≤200mA
Cable length
SI-RS485 - Sensor 1 m (max. 3 m)
Miscellaneous
Electrical connection
Strain gauges (DMS): Female socket 6-pin
U5/U10/I20: Female socket 12-pin
RS485: Male socket 12-pin
Rated temperature range 10 ... 40 °C
Operating temperature range 0 ... 50 °C
Storage temperature range -10 ... 70 °C
Dimension (L x W x H) 125 x 80 x 57 mm
Level of protection IP40
Weight 0.5 kg

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[email protected], www.lorenz-messtechnik.de
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9.1 Options
9.2 Accessories
9.3 Calibrations mV/V2
2 Lorenz-Standard:
- Supply voltage 5V, calibration range ±1 mV/V in 10 steps, calibration range ±2 mV/V in 10 or 20 steps
 -LanguageoftheCerticate:GermanandEnglish
 -CalibrationatDC:NormalK3608,ifsodisplayaboveKeithley2000orLorenzVS3(LorenzamplierwithUSBinterface)
- Calibration at 225 Hz: Normal K3608, if so display above HBM MGCplus + ML38
- Calibration at 225 Hz: Normal BN100A, if so display above HBM DMP40
10 Equipment disposal
The device must be disposed of in accordance with the applicable legal regulations - see also our
„General Terms and Conditions of Delivery and Sale“ at www.lorenz-messtechnik.de
Article-No. Description Type
115134 Adjustmentamplierwithsimulator mV/V / ±10V / 0/4 ... 20 mA
113591 Input range ±4.5 mV/V per channel LCV-USB3/SI-USB/-RS485/-ETH/SI-USB3/4.5 mV/V
Article-No. Description
401010 Proprietary calibration acc. to ISO 10012 10 steps
401011 Proprietary calibration acc. to ISO 10012 20 steps
Article-No. Description Type
10302 Male cable connector 6-pin KS6
10303 Male cable connector 12-pin KS12
41382 Female cable connector 12-pin KD12
10296 Connection cable for passive sensors, 3 m, with 7-pin female cable connector
and 6-pin male cable connector KDM7/A-KS6/A-3m/PVC
10271 Connection cable for passive sensors, 3 m, with 6-pin female cable connector
and 6-pin male cable connector KD6/A-KS6/A-3m/PVC
10279 Connection cable for active sensors, 3 m, with 8-pin female cable connector and
12-pin male cable connector KDM8/A-KS12/B-3m/PVC
10283 Connection cable for active sensors, 3 m, with 12-pin female cable connector
and 12-pin male cable connector KD12/B-KS12/B-3m/PVC

Lorenz Messtechnik GmbH Obere Schlossstrasse 127/129/131
73553 Alfdorf Phone [phone], Fax [phone]
[email protected], www.lorenz-messtechnik.de
Technical changes, errors and misprints excepted. 090325c_SI-RS485
13/13
11 Reference Information
• Document number 090324, operation manual (German)
• Document number 080997, data sheet (German 080996)
• Documentnumber090367“OperationManualforCongurationanEvaluationSoftwareVS3”
(German 090366)
• Documentnumber090110Lorenzprotocol“Aexiblecommandsetfordigitalsensorsand
interfaces“