LORENZ MESSTECHNIK SI-USB3 User manual

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
Fax [phone]
E-Mail: [e-mail]
Technical changes under reserve
090370.docx
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Operation Manual for
Sensor Interface
SI-USB3

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
Fax [phone]
E-Mail: [e-mail]
Technical changes under reserve
090370.docx
Internet: www.lorenz-sensors.com
Page 2 of 12
1 Contents
1Contents ........................................................................................................................................... 2
2Imprint............................................................................................................................................... 3
3Remarks............................................................................................................................................ 4
3.1 Designation of the Remarks ................................................................................................... 4
3.2 Safety Notes ........................................................................................................................... 4
3.2.1 General References.................................................................................................... 4
3.2.2 Intended Purpose, Improper Usage ........................................................................... 4
3.2.3 Installation Notes ........................................................................................................ 5
3.2.4 Disturbance, Maintenance and Repair Notes............................................................. 5
4Preamble........................................................................................................................................... 6
4.1 Product Description ................................................................................................................ 6
4.2 Safe and Correct Use ............................................................................................................. 6
5Pin Assignment SI-USB3 ................................................................................................................ 7
5.1 Pin Assignment for Strain Gauge Sensors with mV/V Signal................................................. 7
5.2 Pin Assignment for Active Sensors with ±5 V or ±10 V Signal ............................................... 7
5.3 Pin Assignment for Active Current Sensors with 0 .. +20 mA Signal ..................................... 7
6Application Example ....................................................................................................................... 8
6.1 Displacement Sensor Potentiometric (supplied by SI-USB3)................................................. 8
7Debugging ........................................................................................................................................ 9
8Specifications ................................................................................................................................ 10
9Continuative Documents .............................................................................................................. 11
10 Notes............................................................................................................................................... 12

LORENZ MESSTECHNIK GmbH
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2 Imprint
Manufacturer, Place
Lorenz Messtechnik GmbH, D-73553 Alfdorf.
Valid for...
SI-USB3 series
Copyright
© 2011 Lorenz Messtechnik GmbH, Alfdorf1.
Reprint-Interdiction
Reprint, even in extracts, only with written authorization from Lorenz
Messtechnik GmbH.
Modification
Technical changes reserved.
1
All trademarks or brands used in this document refer only to the respective product or the holder of the trademark or brand.
Lorenz Messtechnik GmbH does not raise claims to other than its own trademarks or brands.

LORENZ MESSTECHNIK GmbH
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3 Remarks
3.1 Designation of the Remarks
If possible remaining dangers emerge during the operation with VS3, this will be indicated by the following
symbols in this operation manual:
Note:
Important points to consider
3.2 Safety Notes
3.2.1 General References
The enclosed operating instruction is intended for technically qualified personnel who have corresponding
knowledge in the field of measurement and industrial process & control technology.
The precise information about all safety notes contained in this operation manual and warnings, as well
as its perfect technical implementation are precondition for the safe installation, the initiation, the secure
operation and the maintenance of Lorenz Messtechnik GmbH technology devices. For this purpose it is
absolutely necessary that all measures are carried out by qualified personnel. All persons concerned with
the project planning, installation and service of Lorenz Messtechnik GmbH devices, must be familiar to
the security concepts in automatic control and should be qualified in this sense.
For clarity reasons, the enclosed operating instruction cannot represent complete details in all
conceivable cases of applications for the handling of Lorenz Messtechnik GmbH devices. Further, we
cannot consider the entire types of installation, handling and maintenance. If you wish further information
or if special problems occur, which were not, or not at length represented in this operating instruction,
contact us, please.
The oblivion of the safety notes can and will lead to material damages, body injuries and death.
Lorenz Messtechnik GmbH devices may only be operated in accordance with the applications
described in this operation manual. Built-in devices may only be operated in appropriate
installations.
With the connection and the initiation of the device, the customer accepts the general sale and delivery
conditions of Lorenz Messtechnik GmbH. Further, he accepts eventually incomplete operation manuals.
The information described is without guarantee. Errors and changes are reserved.
3.2.2 Intended Purpose, Improper Usage
A Lorenz Messtechnik GmbH device is used for displaying, processing and controlling or regulation of
processes. It shall not be used as the only tool for the prevention of dangerous states to machines and
plants. Machines and plants must be constructed in such a way, that erroneous states cannot lead to a
dangerous situation for the staff (e.g. by independent limit switches, mechanical locking devices). It must
be guaranteed in particular that device-operating errors, its malfunction or its breakdown do not lead to
great property damages or danger for the staff. Consequently, the device then can be used to prevent the
machine or the technical installations from error conditions.
It is also important that the use of devices does not endanger precautions for the safety of technical
installations.
Emergency-off settings must remain effective in all operation modes.

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
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3.2.3 Installation Notes
Lorenz Messtechnik GmbH devices must be installed and connected by compliance with the relevant
DIN- and VDE-norms. They must be installed in such manner that an unintentional use is adequately
excluded. The corresponding hardware and software safety precautions are to be observed in such
manner that an interruption of the supply and signal cables cannot lead to an undefined or dangerous
state. Supply and signal cables must be installed in such way, that disturbing signals (e.g. inductive or
capacitive intersperses) will not cause derogations to the function of Lorenz Messtechnik GmbH devices.
3.2.4 Disturbance, Maintenance and Repair Notes
The devices do not contain parts which can be maintained on the customer side. Repairs shall be carried
out by Lorenz Messtechnik GmbH exclusively.
If assuming that a safe operation of the device is not possible anymore, it must be closed down and
protected against unintentional handling immediately. This, in particular, applies:
If the device shows visible damages
If the device is no longer operative
If parts of the device are loose or slack
If the connection cables show visible damages
Furthermore, we point out that all obligations of Lorenz Messtechnik GmbH exclusively result from the
respective sales contract in which the guarantee has been conclusively settled.

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
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4 Preamble
4.1 Product Description
The power supply (DC) for the SI-USB3 is polarity-independent for both supply plugs!
The SI-USB3 is a measuring amplifier with up to 4 independent input channels.
Each input channel is displayed as a separate device on a PC (virtual serial interface). Each measuring
channel can be individually set in the factory for a physical quantity or a sensor.
The following sensor signals are currently available:
strain gauge signals: ±3 mV/V (corresponding to ±30000 digits)
active signals with voltage input: ±5 V (corresponding to ±25000 digits)
active signals with voltage input: ±10 V (corresponding to ±25000 digits)
active signals with current input: 0 .. 20 mA (corresponding to 0 .. +20000 digits)
The amplifier variant is indicated on the type label and in the documentation.
Pay attention to the signal type of the sensor when connecting the sensor. Connecting the
sensor with the wrong signal type can damage the amplifier and the sensor.
The Lorenz USB drivers are required for the operation on a PC. They are available for download on our
website. Guidance is available in document no. 090235.
For the operation of the SI-USB3 we recommend the software VS3. It is available for download on our
website. Guidance is available in document no 090367.
Among others, this software provides following functions:
Configuration possibilities for the VS3
Storage of sensor-related scaling and adjustment data
Display for the presentation of measured data (actual value, tare value, minimum value and
maximum value)
Presentation of the measured data in a diagram
Storage of measured data in CSV-format (output configurable)
Storage of the diagram in BMP-format (output size adjustable)
Print-out of the diagram (output size defined)
Presentation of the sensor information
The communication protocol is available for the development of your own applications. The English
protocol description is available in document no. 90110 on our website.
4.2 Safe and Correct Use
Observe the correct sensor adjustment.
Consider the correct VS2 configuration.
Choose a significant file identification/prefix when storing measured data.

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
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5 Pin Assignment SI-USB3
Top View
SUBD
(Female)
15-pole
Function
Type
1
Ground (supply) 4 V and 12 V
SI-USB3
2
Supply for active sensors 12 V
3
n.c.
4
reserved
5
reserved
6
Ground (supply) 4 V and 12 V
7
n.c.
8
Supply
9
n.c.
10
Control
11
Signal+ (active or passive)
12
Signal- (relating to signal input (internal to 0 V / GND))
13
Shield
14
n.c.
15
+5V Reference
5.1 Pin Assignment for Strain Gauge Sensors with mV/V Signal
Description Pin (6 pole socket) Color Remark
0 V / GND 1 green Ground reference for supply 4 V and 12 V
4 V 2 brown Supply for strain gauge sensors 4 V
Signal + 3 yellow positive signal input
Signal - 4 white negative signal input
Control 5 grey if available in sensor
Shield 6 shielding do not connect shield with sensor housing
5.2 Pin Assignment for Active Sensors with ±5 V or ±10 V Signal
Description Pin (12 pole socket) Color Remark
0 V / GND E green Ground reference for supply 4 V and 12 V
12 V F brown Supply for active sensors 12 V
Signal + C yellow signal input
Signal –D white relating to signal input (internal to 0 V / GND)
Control K grey if available in sensor
Shield M shielding do not connect shield with sensor housing
5.3 Pin Assignment for Active Current Sensors with 0 .. +20 mA Signal
Description Pin (12 pole socket) Color Remark
0 V / GND E green Ground reference for supply 4 V and 12 V
12 V F brown Supply for active sensors 12 V
Signal + C yellow signal input
Signal - D white relating to signal input (internal to 0 V / GND)
Control K grey if available in sensor
Shield M shielding do not connect shield with sensor housing

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
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6 Application Example
6.1 Displacement Sensor Potentiometric (supplied by SI-USB3)
With “active sensors”, only (type: U5).
Accuracy is depending on the quality of the reference voltage.
Top View
Front View
Output 0..25000 Digits
5 V Reference
Imax
R > 25ΩR
Signal+
1
Imax ≤200mA
15

LORENZ MESSTECHNIK GmbH
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7 Debugging
This chart helps to find frequent errors and the measures for debugging.
Error
Possible Cause
Debugging
Connection to the SI-USB3 is
not possible.
Driver not or incorrectly installed.
Install driver package.
The first start-up of the SI-USB3
must be carried out with
administrator rights.
Supply voltage is overstrained in
such a way that it breaks down.
Check whether the connected
sensor corresponds to the
specifications of the SI-USB3. If
the sensor requires higher current
than available for the SI-USB3,
this sensor can not be used
together with the SI-USB3.
Supply voltage is shortened.
Fix the short circuit.
Output signal remains at the
positive or negative display
stop device/dead stop
Active-Sensor or Current-Sensor
connected to strain gauge input.
Check on type label which input
type has been configured for the
applied sensor connection.
Supply voltage connected to sensor
input.
Check/correct the pin assignment
Output signal highly fluctuates
(strain gauge)
Open sensor input.
Connect sensor

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
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8 Specifications
Type
LCV-USB2/DMS
LCV-USB2/U5
LCV-USB2/U10
LCV-USB2/I20
Article-No.
112311
112312
112705
112313
Input Range
±3 mV/V
±5 V
±10 V
0/4…20 mA
Evaluation Side
Power supply1
Output power supply
Supply voltage SI-USB3
Voltage
100 .. 240 VAC
24 VDC, 1,25 A
10 .. 30 VDC 880 mA
Excitation Sensor
Strain Gauge/PT100
U5/U10/I20
5 V 20 mA
12 V 80 mA
Measured Values
Strain Gauge/PT100
U5/U10
I20
Potentiometer
±3 mV/V = ±30000 Digits
±5 V/±10 V = ±25000 Digits
0/4…20 mA = 0/4000…20000 Digits
5V/10V = 25000 Digits
Resolution
Strain Gauge/PT100
U5/Potentiometer
U10/Potentiometer
I20
1 mV/V = 10000 Digits
1 V = 5000 Digits
1 V = 2500 Digits
1 mA = 1000 Digits
Zero Point
Strain Gauge/U5/U10/I20
0 Digits
Output Format
16 Bit Signed Int.
Input Resistance
Strain Gauge/U5/U10
I20 burden
>1 MΩ
62 Ω
Lowpassfilter 2.Order
Hz
30/300/1000/3000
Measuring Rate
max. 5000 Meas./s
Temperature Drift
4 Bit/10 K
Linearity Error
±32 Digits
Accuracy
±32 Digits
Miscellaneous
Cable Length LCV-USB2-Evaluation
2 m
Cable Length LCV-USB2-Sensor
1 m (max. 3 m)
Nominal Temperature Range
10 … 40 °C
Service Temperature Range
0 ... 50 °C
Storage Temperature Range
-10 ... 70 °C
Dimensions (Ø x L)
25 x 115 mm (incl. screw joint)
Weight
250 g
Level of Protection
IP20
Options/ Accessories
Article-No.
Type
Designation
115134
mV/V/±10V/0/4...20mA
Adjustment measuring amplifier with simulator
113591
LCV-USB2/-USB3/SI-USB/-
USB3/-RS485/-ETH/4,5mV/V
Sensitivity ±4,5 mV/V per channel
116620
SI-USB3/WB
Wall mounting
116621
SI-USB3/TF
Towerfoot
113273
USB-A-Plug/
USB-B-Plug, 1,8 m/PVC
USB Interface-cable
10309
KDSH15
D-SUB-Socket, High Density, 15-pole
10477
KDM5/A-KSSH15/A-3m/PVC
Passive Sensors, Cable-Socket 5-pole min.,
D-SUB-Plug, High Density, 15-pole
10365
KDM7/A-KSSH15/A-3 m/PVC
Passive Sensors, Cable-Socket 7-pole min., D-SUB-Plug,
High Density, 15-pole
10269
KD6/A-KSSH15/A-3 m/PVC
Passive Sensors, Cable-Socket 6-pole, D-SUB-Plug,
High Density, 15-pole
10312
KD12/A-KSSH15/A-3 m/PVC
Passive Sensors, Cable-Socket 12-pole, D-SUB-Plug,
High Density, 15-pole
103075
KDM8/A-KSSH15/A-3 m/PVC
Active Sensors, Cable-Socket 8-pole min., D-SUB-Plug,
High Density, 15-pole
10268
KD12/B-KSSH15/A-3 m/PVC
Active Sensors, Cable-Socket 12-pole, D-SUB-Plug,
High Density, 15-pole
Option Calibrations mV/V
Artikel-Nr.
Bezeichnung
Stufen
Norm
401010
Factory Calibration
10
ISO 10012
401011
Factory Calibration
20
1Interface cable SI-USB3 for evaluation on initial delivery included, cable length 1,8 m.

LORENZ MESSTECHNIK GmbH
Obere Schloßstr.131
D-73553 Alfdorf
+49 7172/93730-0
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9 Continuative Documents
Following documents contain reference information about the SI-USB3 / LCV-USB2:
Document number 090232, “Operation Manual for Sensor Interface LCV-USB2” (German 090205).
Document number 080727, data sheet “Sensor-Interface with USB” (German 080726).
Document number 090367 “Operation Manual for Configuration an Evaluation Software VS3”(German
090366).
Document number 090313, “Operation Manual for Configuration and Evaluation Software VS2“ (German
090312).
Document number 090235, “Driver Installation Description for Sensor-Interface and LCV-USB2, SI-USB and
Sensors with USB Interface (USB Driver.exe)“ (German 090198).
Document number 090110 Lorenz protocol “A flexible command set for digital sensors and interfaces“.

LORENZ MESSTECHNIK GmbH
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+49 7172/93730-0
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10 Notes