Siemens sitrans PROBE LU Instruction manual

Radar Transmitters
Quick Start Manual 12/2013
SITRANS Probe LU (PROFIBUS PA)
SITRANS

IQ300IX.fm Page 5 Tuesday, October 2, 2001 1:43 PM

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SITRANS Probe LU (PROFIBUS PA) Quick
Start Manual
This manual outlines the essential features and functions of the SITRANS Probe LU (PROFIBUS PA).
We strongly advise you to acquire the detailed version of the manual so you can use your
instrument to its fullest potential. The complete manual can be downloaded from the Siemens
website at: www.siemens.com/level. The printed manual is available from your local Siemens
representative.
Questions about the contents of this manual can be directed to:
Siemens Milltronics Process Instruments
1954 Technology Drive, P.O. Box 4225
Peterborough, Ontario, Canada, K9J 7B1
Email: [email protected]om
MILLTRONICS is a registered trademark of Siemens Milltronics Process Instruments.
Safety Guidelines
Warning notices must be observed to ensure personal safety as well as that of others, and to
protect the product and the connected equipment. These warning notices are accompanied by
a clarification of the level of caution to be observed.1
Copyright Siemens Milltronics
Process Instruments 2013.
All Rights Reserved
Disclaimer of Liability
We encourage users to purchase
authorized bound manuals, or to view
electronic versions as designed and
authored by Siemens Milltronics Process
Instruments. Siemens Milltronics
Process Instruments will not be
responsible for the contents of partial or
whole reproductions of either bound or
electronic versions.
While we have verified the contents of this manual
for agreement with the instrumentation described,
variations remain possible. Thus we cannot
guarantee full agreement. The contents of this
manual are regularly reviewed and corrections are
included in subsequent editions. We welcome all
suggestions for improvement.
Technical data subject to change.
WARNING: relates to a warning symbol on the product, and means that failure to
observe the necessary precautions can result in death, serious injury, and/or
considerable material damage.
WARNING1: means that failure to observe the necessary precautions can result
in death, serious injury, and/or considerable material damage.
Note: means important information about the product or that part of the operating manual.
1. This warning symbol is used when there is no corresponding caution symbol on the product.

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SITRANS Probe LU (PROFIBUS PA)
SITRANS Probe LU is a 2-wire loop-powered, continuous level monitor that uses advanced
ultrasonic techniques. The instrument consists of an electronic component coupled to the
transducer and process connection.
The transducer is available in ETFE (ethylene-tetrafluoroethylene) or PVDF (polyvinylidene
fluoride), allowing SITRANS Probe LU to be used in a wide variety of industries and
applications using corrosive chemicals.
The ultrasonic transducer contains a temperature-sensing element to compensate for
temperature changes in the application.
Communication is via PROFIBUS PA. This device supports acyclic communications from both a
PROFIBUS Class I and Class II master. Signals are processed using Sonic Intelligence® which
has been field-proven in over 500,000 applications worldwide (ultrasonic and radar).
SITRANS Probe LU is available in three versions:
• General Purpose (non-hazardous)
• Intrinsically Safe (with suitable barrier)
• Non-Incendive (FM Class I, Div. 2)
WARNING: Changes or modifications not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.
Note: This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based communications.

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Specifications
For a complete listing, see the SITRANS Probe LU (PROFIBUS PA) Operating Instructions. For
Approvals information, please refer to the device nameplate1.
Ambient/Operating Temperature
Power
• Bus powered On PROFIBUS PA, as per IEC 61158-2
• Current consumed 12 mA (default value)2
Performance
• Update time with 12 mA loop current26.0 s (typical), maximum 16.0 s3
Approvals
• General CSAUS/C, FM, CE
• Hazardous Intrinsically Safe (Europe) ATEX II 1 G Ex ia IIC T4 Ga
(US/Canada) FM4/CSA4: barrier required
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Class III T4
1. For device nameplate see
Wiring setups for hazardous area installations on page 7.
Note: Process temperature and pressure capabilities are dependent upon information
on the device nameplate. The reference drawing listed on the nameplate can be
downloaded from the Siemens website. Go to the SITRANS Probe LU product page at:
www.siemens.com/probelu.
2. For 13, 15, or 20 mA options, see
PROFIBUS Current Consumption on page 16.
3. Temperature dependent: typical value at +20 °C (+68 °F); max. value at +80 °C (+176 °F).
4. See
FM/CSA Intrinsically Safe Connection Drawing on page 1 of Appendix A, for drawing number
23650617.
flange adaptor (option)
customer-supplied
flange
ambient temperature
surrounding enclosure
–40 to +80 °C (–40 to +176 °F)
process temperature
–40 to +85 °C (–40 to +185 °F)
device nameplate

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(Brazil) INMETRO: DNV 12.0084 X
Ex ia IIC T4 Ga
IP67/IP68
-40 ºC ≤ T a ≤ +80 ºC
DNV #OCP 0017
ABNT NBR IEC 60079-0:2008
ABNT NBR IEC 60079-11:2009 e
ABNT NBR IEC 60079-26:2008
Non-incendive (US) FM1:
Class I, Div. 2, Groups A, B, C, D T5
Installation
Mounting location
Recommendations
• Ambient temperature should be within –40 to +80 °C (–40 to +176 °F).
• Provide easy access for viewing the display and programming via the handheld
programmer.
• Provide an environment suitable to the housing rating and materials of construction.
• Keep the sound path perpendicular to the material surface.
1. See
FM: Class I, Div. 2 Connection Drawing on page 5 of Appendix A, for drawing number 23650583.
Note: Approved dust-tight and water-tight conduit seals are required for outdoor Type 4X /
NEMA 4X, Type 6 / NEMA 6, IP67, IP68 locations..
WARNINGS:
• Installation shall only be performed by qualified personnel and in accordance with
local governing regulations.
• SITRANS Probe LU is to be used only in the manner outlined in this manual,
otherwise protection provided by the equipment may be impaired.
Note: Please refer to the device nameplate for approval information.

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Precautions
• Avoid proximity to high voltage or current wiring, high voltage or current contacts, and to
variable frequency motor speed controllers.
• Avoid interference to the sound path from obstructions or from the fill path.
s.
Mounting instructions
SITRANS Probe LU is available in three thread types: 2" NPT, 2" BSP, or PF2/G (BS EN ISO 228-1).
1. Before inserting SITRANS Probe LU into its mounting connection, ensure that the threads
are of the same type to avoid damaging them.
2. Simply screw SITRANS Probe LU into the process connection and hand tighten.
Wiring
Power1
Note: Ideally, mount SITRANS Probe LU so that the face of the transducer is at least
300 mm (1 ft) above the highest anticipated level.
WARNINGS:
DC terminals shall be supplied from an SELV1source in accordance with
IEC-1010-1 Annex H.
All field wiring must have insulation suitable for rated voltages.
1. Safety Extra Low Voltage
seam
ladder
rung
pipe
Fill
The sound path should be:
• perpendicular to the
monitored surface
• clear of rough walls,
seams, rungs, or
other obstructions
• clear of the fill path 10°

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Connecting SITRANS Probe LU (PROFIBUS PA)
1. Strip the cable jacket for approximately
70 mm (2.75") from the end of the PROFIBUS PA
cable, and thread the wires through the gland1.
2. Connect the wires to the terminal as shown:
Probe LU (PROFIBUS PA) is not polarity-sensitive.
3. Ground the instrument according to local
regulations.
• For Intrinsically Safe applications, connect
the cable shield to the instrument shield
connection2, and ground the shield
connection to an external ground that is
connected to an equal-potential grounding
grid. For more detail on Explosion
Protection, you can download the brochure
Siemens Process Automation Explosion Protection (part number A5E00265440) from
www.siemens.com/level, under Brochures/General.
• For General Purpose applications, ground the shield at one point only (usually the
power supply side) and continue the shield from device to device, connecting it to
the shield connection in each Probe LU.
4. Tighten the gland to form a good seal.
5. Close the cover and tighten screws: please do not overtighten screws. Recommended
torque is 0.5 to 1.1 N-m (5 to 10 in-lb).
Note:
• For detailed wiring instructions, please see the full manual.
• For Intrinsically Safe setups (FM/CSA Class I, Div. 1), see FM/CSA Intrinsically Safe
Connection Drawing on page 1 of Appendix A, for drawing number 23650617.
• For Non-Incendive setups (FM: Class I, Div. 2), see
FM: Class I, Div. 2 Connection Drawing
on page 5 of Appendix A, for drawing number 23650583.
• The non-metallic enclosure does not provide a continuous ground path between conduit
connections: use grounding-type bushings and jumpers.
• Separate cables and conduits may be required to conform to standard instrumentation
wiring practices, or electrical codes.
1. If cable is routed through conduit, use only approved suitable-size hubs for waterproof applications.
2. The instrument shield connection is internally connected to the external ground lug.
Note: PROFIBUS PA must be terminated at both extreme ends of the cable for it to
work properly. Please refer to the
PROFIBUS PA User and Installation Guidelines (order
number 2.092), available from www.profibus.com.
shield
wire

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Wiring setups for hazardous area installations
Always check the device nameplate and process device tag to verify the approval rating.
1. Intrinsically Safe wiring
• For wiring requirements: follow local regulations.
• Approved dust-tight and water-tight conduit seals are required for outdoor Type 4X /
NEMA 4X, Type 6 / NEMA 6, IP67, IP68 locations.
• Refer to
Instructions specific to hazardous area installations (Reference European
ATEX Directive 94/9/EC, Annex II, 1/0/6) on page 8.
2. Non-incendive wiring (FM US only)
Profibus PA
Entity:
Ui=24V
Ii=250mA
Pi=1.2W
Ci=1.0nF
Li=0
FISCO:
FieldDevice:
Ui=17.5 V
Ii= 380 mA
Pi= 5.32 W
Ci= 1.0 nF
Li= 0
Power Rating: 30V , 20 mA Max.
Serial No: GYZ / B1034567
Assembled in Canada with domestic and imported parts
Siemens Milltronics Process Instruments, Peterborough
SITRANS Probe LU
7MLxxxx-xxxxx-xxxx Encl.: NEMA/TYPE 4X, 6, IP67, IP68
Amb.Temp.: – 40°C to 80°C
Ex ia IIC T4 Ga
DNV 12.0084 X
0518
Ex ia IIC T4 Ga
SIRA 06ATEX2357X
1GII
ATENÇÃO - RISCO POTENCIAL DE CARGA ELETROSTÁTICA
- VEJA INSTRUÇÕES
KCC-REM-S49
PROBELU
OCP 0017
The ATEX certificate can be downloaded from the product
page of our website at: www.siemens.com/probelu. Go to Support > Approvals /
Certificates.
Device nameplate (ATEX/INMETRO/C-TICK)
Entity:
Ui= 24V
Ii= 250mA
Pi= 1.2W
Ci= 1.0nF
Li= 0
Serial No: GYZ / B1034567 Encl.: NEMA/TYPE 4X, 6, IP67, IP68
Amb.Temp.: – 40°C to 80°C
Power Rating: 30V , 20 mA Max.
Assembled in Canada with domestic and imported parts
Siemens Milltronics Process Instruments, Peterborough
SITRANS Probe LU
7MLxxxx-xxxxx-xxx-x
WARNING: Possible Static Hazard, Do Not Rub Or Clean On Site.
ClassI,Div1,Gr.A,B,C,D; T4
ClassII,Div1,Gr.E,F,G; ClassIII
Exia per drawing: 23650617
Profibus PA
Fisco:
Ui=17.5V
Ii=380 mA
Pi=5.32 W
Ci=1.0 nF
Li=0
R
159134
FM/CSA Intrinsically Safe connection drawing number 23650617 can be downloaded from
the product page of our website at: www.siemens.com/probelu. Go to Support > Installation
Drawings > Level Measurement > Continuous - Ultrasonic.
Device nameplate (FM/CSA)
Class I,Div.2,
Group A,B,C,D
Temp.Code:T5
PROFIBUSPA
Serial No: GYZ / S1034567 Encl.: NEMA/TYPE 4X, 6, IP67, IP68
Amb.Temp.: – 40°C to 80°C
Power Rating: 30V , 20 mAMax.
Assembled in Canada with domestic and imported parts
Siemens Milltronics Process Instruments, Peterborough
SITRANS Probe LU
7ML1234-78910-ABC-D
FM Class 1, Div 2 connection drawing
number 23650583 can be downloaded from the product page of our website at:
www.siemens.com/probelu. Go to Support > Installation Drawings > Level Measurement >
Continuous - Ultrasonic.

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Instructions specific to hazardous area installations
(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)
The following instructions apply to equipment covered by certificate number SIRA
06ATEX2357X:
1. For use and assembly, refer to the main instructions.
2. The equipment is certified for use as Category 1G equipment.
3. The equipment may be used with flammable gases and vapors with apparatus
group IIC and temperature class T4.
4. The equipment is certified for use in an ambient temperature range of –40 C to
80 C.
5. The equipment has not been assessed as a safety related device (as referred to by
Directive 94/9/EC Annex II, clause 1.5).
6. Installation and inspection of this equipment shall be carried out by suitably trained
personnel in accordance with the applicable code of practice (EN 60079-14 and
EN 60079-17 in Europe).
7. Repair of this equipment shall be carried out by suitably trained personnel in
accordance with the applicable code of practice (e.g. EN 60079-19 within Europe).
8. Components to be incorporated into or used as replacements in the equipment shall
be fitted by suitably trained personnel in accordance with the manufacturer’s
documentation.
9. It is the responsibility of the user to ensure that manual override is possible in order
to shut down the equipment and protective systems incorporated within automatic
processes which deviate from the intended operating conditions, provided that this
does not compromise safety.
10. The ‘X’ suffix to the certificate number relates to the following special conditions for
safe use:
a. Parts of the enclosure may be non-conducting and may generate an ignition-
capable level of electrostatic charge under certain extreme conditions. The
user should ensure that the equipment is not installed in a location where it
may be subjected to external conditions (such as high-pressure steam) which
might cause a build-up of electrostatic charge on non-conducting surfaces.
b. As either Aluminum, Magnesium, Titanium or Zirconium
may be used at the
accessible surface of the equipment, in the event of rare incidents, ignition
sources due to impact and friction sparks could occur. This shall be considered
when the SITRANS Probe LU (PROFIBUS PA) is being installed in locations that
specifically require group II, category 1G equipment.

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11. The certification of this equipment relies upon the following materials used in its
construction:
Aluminum alloy ANSI ref. A380.0 (aluminum enclosure option)
STYCAST12651-40FR encapsulant, catalyst II
The detailed composition of Aluminum A380.0 as used in the metal enclosure
(threaded lid option only) is as follows:
Si – 8.5%, Fe – 1.3%, Cu – 3.5%, Mn – 0.5%, Mg – 0.1%, Ni – 0.1%, Zn – 3%,
Sn – 0.35%, others – 0.5%, Al - balance
If the equipment is likely to come into contact with aggressive substances, then it is
the responsibility of the user to take suitable precautions that prevent it from being
adversely affected, thus ensuring that the type of protection is not compromised.
Aggressive substances:e.g. acidic liquids or gases that may attack metals, or
solvents that may affect polymeric materials.
Suitable precautions: e.g. regular checks as part of routine inspections or
establishing from the material’s data sheet that it is
resistant to specific chemicals.
12. Equipment Marking:
The equipment marking contains at least the information on the product label,
shown on the inside front cover of this manual.
Communications via PROFIBUS PA
Configuring the PROFIBUS PA master
To configure SITRANS Probe LU on the network, you will need the GSD file. You can download
the files (SIEM8124.gsd for the 6 m Probe LU, or SIEM8123.gsd for the 12 m Probe LU) from our
web site. Go to the SITRANS Probe LU product page at:
www.siemens.com/probelu and click Downloads.
Startup
SITRANS Probe LU automatically starts up in RUN mode, and detects the material level. The
LCD displays the material level referenced from the Low Level Point2(the output of Analog
Input Function Block1/AIFB1). System status is displayed on the LCD, or on a remote
communications terminal.
1. STYCAST® is a registered trademark of the National Starch and Chemical Company.
Notes:
• The following instructions assume that the user is familiar with PROFIBUS PA.
• For a complete list of applicable parameters, please see the full manual.
2. See
Quick Setup on page 14 for an illustration.

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Startup Display (RUN mode)1
Programming SITRANS Probe LU (PROFIBUS PA)
The parameters that control the operation of the Probe LU (PROFIBUS PA) are organized into
function groups, and arranged in a 4-level menu structure that can be accessed either via the
handheld programmer, or via PDM and PROFIBUS PA. (For charts showing the complete menu
structure, refer to the full manual.)
1. For more details on Loss of Echo, refer to the full manual.
Normal operation
1
34
5
2
6
7
1 – Primary region displays material level (Output of the active AIFB)
2 – Menu number (displays the number of the active AIFB: 1 or 2)
3 – Echo status indicator: Reliable Echo or Unreliable Echo
(The Unreliable Echo border flashes if Loss of Echo (LOE) is pending1. When LOE becomes
active, the border is solid and the secondary region displays S :0.)
4 – Bar graph border (always visible in RUN mode)
5 – Units or Percent
6 – Active bar graph represents material level
(The lowest bar flashes once per second as a heartbeat.)
7 – Secondary region displays one of the following:
• Internal electronics temperature
• Value representing echo confidence
• Distance (Secondary Value 2)
• General status information, or a fault code (see the full manual for a list of fault
codes and their meanings)
Failsafe operation
3
5
6
7
2

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The handheld programmer1
To activate PROGRAM mode, point the handheld programmer at the display from a maximum
distance of 600 mm (2 ft), and press the Mode key .
Within Program Mode, the handheld programmer has two modes of operation: Navigation and
Edit.
• Press the Mode key to switch from RUN to PROGRAM and enter Navigation Mode:
the rightmost digit of the menu number flashes and the PROGRAM icon is not visible.
• Press Right arrow a second time to change the mode from Navigation to Edit.
• In Edit mode, the PROGRAM icon appears and flashes.
PROGRAM Mode Display
When you activate PROGRAM mode for the first time in any power cycle, the LCD displays the
first menu. If, during the same power cycle, you switch to RUN mode, and then back to
PROGRAM mode, the LCD will display the menu or item that was last accessed in PROGRAM
mode.
1. For complete instructions on local programming using the handheld programmer, please see the full
manual.
Note: SITRANS Probe LU (PROFIBUS PA) continues to monitor In and Out values even when
the device is in PROGRAM mode.
display
hand-held programmer
max. 600 mm
(2 ft)
5
9
C
6
0
7 8
1 2 3 4
numeric keys
function
keys
1 – Primary region (displays parameter value)
2 – Menu number region (displays Menu number)
3 – PROGRAM mode icon
4 – Secondary region (displays text label)
1
23
4

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Security
Local operation enable
Local Operation can be enabled or disabled via PDM. Go to Identification > Device > Local
Operation Enable and select the desired setting.
Write Locking
Write locking prevents any changes to parameters via PDM or via the handheld programmer,
but still allows access to the device.
Via PDM, open the menu Device – Write Locking, and select Off or On.
Via the handheld programmer:
•OpenIdentification Menu, then scroll down to CONFIG.
• Press Right ARROW to open the Config Menu, then scroll down to LOCK.
1. Identification
1.3. Configuration
1.3.5. Lock
• To enable programming, set LOCK to 2457. To disable programming, enter any other value.
Remote operation enable
Remote Operation can be enabled or disabled via the handheld programmer.
•OpenIdentification Menu, then scroll down to CONFIG.
• Press Right ARROW to open the Config Menu, then scroll down to REMLOCK.
1. Identification
1.2. Configuration
1.2.2. Remote Lockout
• To enable programming, set REMLOCK to 0. To disable programming, enter 1.
Master Reset
In PDM, open the menu Device – Master Reset, to access the reset options, including Factory
Reset.
Hand programmer values 2457 (unlock value) Off Enables parameter changes
any other value On Disables parameter changes
Values 0Off Remote operation enabled.
1On Remote operation disabled.

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Activating SITRANS Probe LU
Power up the instrument. SITRANS Probe LU (PROFIBUS PA) starts in RUN mode, and the LCD
displays the output of AIFB1.
Network Address (default 126)
Verifying/changing the device address via the handheld programmer
1. Press Mode to activate PROGRAM mode
and open Menu level 1.
2. Press Right ARROW twice to navigate to
PROFIBUS Address.
3. Press Right ARROW again to open Edit
mode: the PROGRAM icon will flash.
4. Key in a new value and press Right ARROW
to accept it. (The LCD displays the new value,
PROGRAM icon disappears, and the last menu
digit flashes to indicate Navigation mode.)
5. Press Mode to return to RUN mode.
Performing calibration via PROFIBUS PA
To use PROFIBUS PA, you will need a PC configuration tool: we recommend SIMATIC PDM.
Please consult the operating instructions or online help for details on using SIMATIC PDM. (An
Application Guide
SMPI PROFIBUS PA instruments and SIMATIC PDM is available on our
website at: www.siemens.com/probelu.)
Note: Keep infrared devices such as laptops, cell phones, and PDAs, away from SITRANS
Probe LU (PROFIBUS PA) to prevent inadvertent operation.
Notes:
• Local programming must be enabled, to allow changes (see Local operation enable on
page 12).
•CLEAR can be used to clear the field.
•PressRight ARROW to open Edit mode: the PROGRAM icon flashes.
•PressLeft ARROW to cancel Edit mode: the Menu number flashes (the PROGRAM
icon is not visible).
C
Menu level: last
digit flashes in
Navigation mode
Program icon:
flashes in Edit
mode
Right-most digit
flashes in
Navigation mode

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Changing parameter settings
• First launch SIMATIC PDM, connect to SITRANS Probe LU (PROFIBUS PA), and upload
data from the device.
• Adjust parameter values in the parameter view field (right side of screen).
• After adjusting the value, press Enter (the status fields read Changed).
• When you have completed the adjustments, open the Device menu, download data to the
device, and save parameter settings offline (the status fields go blank).
Quick Setup
Only four settings are required for a Quick Setup:
• High Calibration Point and High Level Point
• Low Calibration Point and Low Level Point
Primary Variable (PV) will be level (SV1). SV1 (Secondary Value 1) is the sum of Level plus Level
Offset (if any).
1, 2, 3.
Calibration
1. Open the menu Device – Sensor Calibration and select the tab Dry Calibration. (Click on
Additional Information to see the schematic showing the PROFIBUS parameters.)
2. Enter the new value for Low Calibration Point (default units are meters).
3. Enter the corresponding value for Low Level Point in percent (default is 0).
4. Enter the new value for High Calibration Point (default units are meters).
5. Enter the corresponding value for High Level Point in percent (default is 100).
6. Click on Transfer.
7. SITRANS Probe LU is now ready to operate.
1. Sensor Reference Point: the point to which all of the above parameters are referenced.
2. Sensor Value: the value produced by the echo processing, which represents the distance from the
Sensor Reference Point to the target.
3. Level Value: the level measured in level units.
High Level
Point
(default: 100%)
Sensor Reference Point 1
(transducer face)
Sensor Value2
Low Level
Point
(default: 0%)
Level3
Level Offset Secondary Value 1
Low Calibration
Point
Tank reference
point
High
Calibration
Point
Far
Range
Near
Range
Distance
(SV2 or SV3)
Sensor Offset

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Auto False Echo Suppression
Enables a "learned" TVT curve to be used in place of the default TVT curve. Use this feature to
ignore false echoes on the echo profile.
Set Range (Auto False Echo Suppression Distance)
first, then set Auto False Echo Suppression.
Range (Auto False Echo Suppression Distance)1: (default 1)
Defines the endpoint of the Learned TVT distance.
1. Rotate the instrument for best signal (lower false-echo amplitude).
2. Go to Input > Detailed Setup > TVT setup > Distance.
3. Determine the actual distance from the reference point (transducer face) to the material
surface.
4. Subtract 0.5 m (20") from this distance, and enter the result.
Set Auto False Echo Suppression
1. Open the menu Device – Auto False Echo Suppression and select the option to change it.
2. Select Learn. The device will automatically revert to On (Use Learned TVT) after a few
seconds.
1. This parameter cannot be reset to the factory default.
Display before Auto False Echo Suppression
default TVT
curve TVT
Hover Level
false
echo
true
echo
Distance (meters)
Level (db)
Display after Auto False Echo Suppression
TVT curve
(learned) material
level
false
echo
Distance (meters)
Level (db)

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PROFIBUS Current Consumption
Allows you to select the PROFIBUS device current. Higher values allow faster update rates.
1
Go to Input > Standard Setup > PROFIBUS Current Consumption, and enter the value
corresponding to the desired device current.
Maintenance
SITRANS Probe LU requires no maintenance or cleaning.
Unit Repair and Excluded Liability
For detailed information, please see the inside back cover.
Warning: This parameter should be modified only once at installation, to match the design
criteria of the network.
Values Loop current Update time1
0*12 mA 6.0 s (typical), maximum 16.0 s
113 mA 5.0 s (typical), maximum14.0 s
215 mA 3.7 s (typical), maximum8.0 s
320 mA 2.4 s (typical), maximum4.0 s
1. Temperature dependent: typical value at +20 °C (+68 °F); maximum value at +80 °C (+176 °F).

A5E32081626 SITRANS Probe LU (PROFIBUS PA) – QUICK START MANUAL Page A-1
mmmmm
A: Connection Drawings
Appendix A: Connection Drawings
FM/CSA Intrinsically Safe Connection Drawing
Note: Reference drawing 23650617 is available from the product page of our website
at: www.siemens.com/probelu.
Product Group
FOR INTERNAL
USE ONLY
S. NGUYEN
PETERBOROUGH
FOR CONSTRUCTION
CHANGE Ci RATING PER ECO 79B35457
0
1
E. DeSIMONE
R. CLYSDALE
1:1 14
NTS
A
1
RPC
RPC SN
SN
FISCO-Concept
The FISCO Concept allows interconnection of intrinsically safe apparatus to associated apparatus not
specifically examined in such combination. The criteria for interconnection is that the voltage (U or V ), the
current (I, or I ) and the power (P, or P ) which intrinsically safe apparatus can receive and remain
intrinsically safe, considering faults, must be equal or greater than the voltage (U or V or V), the current
(l or I or l) and the power (P or P ) levels which can be delivered by the associated apparatus,
considering faults and applicable factors. In addition, the maximum unprotected capacitance (C) and
inductance (L) of each apparatus (other than the termination) connected to the fieldbus must be less than or
equal to 5 nF and 10 µH respectively.
In each segment only one active device, normally the associated apparatus, is allowed to provide the
necessary energy for the fieldbus system. The allowed voltage U (or V or V) of the associated apparatus is
limited to the range of 14V dc to 24V dc. All other equipment connected to the bus cable has to be passive,
meaning that they are not allowed to provide energy to the system, except to a leakage current of 50 µA for
each connected device. Separately powered equipment needs a galvanic isolation to assure that the
intrinsically safe fieldbus circuit remains passive.
The cable used to interconnect the devices needs to have the parameters in the following range:
imax
imax
i
i
oc
imax ooci
osc i o max
t
o
loop resistance R*: 15 ... 150 / km
inductance per unit length L*: 0,4 ... 1 mH / km
capacitance per unit length C*: 80 ... 200 nF / km
C* = C* + 0.5 C* , if both lines are floating or
C* = C* + C* , if the screen is connected to one line
Maximum allowed cable length: CLASS I, ZONE 0 ia CLASS I, ZONE 1 ib
Length of spur cable: 30 m 30 m
Length of trunk cable: 1 km 5 km
Total length (sum of trunk and spur cables) 1 km 5 km
Length of splice 1 m 1 m
At each end of the trunk cable an approved infallible line termination with the following parameters is suitable:
R = 90 ...100
C = 0 ... 2.2 µF.
One of the allowed terminations might already be integrated in the associated apparatus.
The number of passive devices connected to the bus segment is not limited due to I.S. reasons. If the above
rules are respected, up to the specified total length, the inductance and capacitance of the cable will not impair
the intrinsic safety or the installation.
W
££
££
££
££
W
line/line line/screen
line/line line/screen
2365061701
ULTRASONICS
SITRANS Probe LU
PROFIBUS PA
CONNECTION DRAWING
23650617
18 / APRIL/ 2005
APRIL
18 / 2005
JAN
19 / 2007

Page A-2 SITRANS Probe LU (PROFIBUS PA) – QUICK START MANUAL A5E32081626
mmmmm
A: Connection Drawings
Product Group
FOR INTERNAL
USE ONLY
The number of passive devices connected to the bus segment is not limited due to I.S. reasons. If the above
rules are respected, up to the specified total length, the inductance and capacitance of the cable will not
impair the intrinsic safety or the installation.
1. Intrinsic safety barrier not required. Max. supply voltage 30 V.
2. WARNING: Explosion Hazard - do not disconnect equipment unless power has been switched off
or the area is known to be Non- Hazardous.
3. WARNING: Substitution of components may impair suitability for Class I, Division 2.
Notes:
INTRINSICALLY SAFE CLASS I, II, III DIV. 1, GROUPS A, B, C, D, E, F, G
CLASS I, ZONE 0/1 GROUPS IIB / IIC
1. Approved apparatus must be installed in accordance with manufacturer instructions.
2. Approved associated apparatus must meet the following requirements:
U or V or V U (V ) and l or I or l l (I ) and P or P P (P )
3. The maximum non-hazardous area voltage must not exceed 250 V.
4. In the USA the installation must be in accordance with the National Electrical Code NFPA 70,
Article 504, resp. Article 505 and ANSI/ISA-Rp 12.6 (except chapter 5). In Canada observe
the Canadian Electrical Code.
5. Multiple earthing of screen is allowed only, if high integrity equipotential system is realized between
the points of bonding.
6. WARNING: Substitution of components may impair intrinsic safety.
ooct o t i max o i max
£££
i max sc max
FM applications: NONINCENDIVE, CLASS I, II, III DIV. 2, GROUPS A, B, C, D, E, F, G
S. NGUYEN
PETERBOROUGH
SEE SHEET 1
E. DeSIMONE
R. CLYSDALE
1:1 24
NTS
A
1
2365061701
ULTRASONICS
SITRANS Probe LU
PROFIBUS PA
CONNECTION DRAWING
23650617
18 / APRIL/ 2005