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Operating Manual

ARS31(Pro)-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

12

Illustration 2: Installation of ARS31PRO-UMB/ARS31-UMB

in the road

Straßensensor

Road sensor

Straßensensor

Road sensor

ext.

Temp.Sens.

ext.

Temp.Sens.

min. Ø 16 cm

Schlitz/slit:
2 cm breit / wide
5 cm tief / deep

Straßenoberfläche

Road surface

Gießharzbeton

casting resin concrete

Gießharzbeton

Casting resin conrete

Straßenoberfläche

Road surface

5 c

m

6 c

m

min. Ø 9 cm

59

cm

67,5°

ARS31Pro extension

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Summary of Contents for 8610.U050

Page 1: ...www lufft com Operating Manual ARS31Pro UMB ARS31 UMB Active Road Sensor Order No ARS31Pro UMB 8810 U051 50m cable Order No ARS31 UMB 8610 U050 50m cable Version V6 06 2014 ...

Page 2: ...n 23 7 1 Binary protocol 23 7 2 ASCII protocol 25 7 3 Channel assignment for the data request 26 7 4 Mapping standards 28 8 Technical data 29 8 1 Measurements 29 8 2 Storage conditions complete sensor 29 8 3 Operating conditions 30 8 4 Electrical data 30 8 5 Interfaces 30 8 6 Mechanical data excluding cable 30 9 EC Certificate of Conformity 31 10 Troubleshooting 32 11 Service and maintenance 33 12...

Page 3: ... and operating conditions 1 3 Designated use The equipment must only be operated within the range of the specified technical data The equipment must only be used under the conditions and for the purposes for which it was designed The safety and operation of the equipment can no longer be guaranteed if it is modified or adapted Do not continue to use equipment that is obviously defective 1 4 Guaran...

Page 4: ...erfaces Inverse polarity protection 3 1 Method of operation ARS31Pro UMB ARS31 UMB ARS31Pro UMB ARS31 UMB determines the freezing temperature of a liquid on the road surface by means of active cooling and heating The Sensor allows precise determination of the freezing temperature in the absence of accurate knowledge of the type or mixture of salt The sensor operates in a temperature range describe...

Page 5: ...sor transmits threat of icing Threat of icing is only transmitted as a result of a direct measurement if the road temperature T is less than 1 C To avoid measurement gaps due to interference during measurement the sensor is equipped with an intelligent hold measurement function also for threat of icing If the condition threat of icing was triggered by the freezing temperature measurement and the f...

Page 6: ...e TG 2 available TG 3 availa ble 0 min 5 min 10 min 15 min 20 min 25 min 30 min 35 min 40 min 45 min 50 min 55 min 60 min 1 At time 15 min TG 1 is available and will be issued 2 In the next measurement cycle at the time 25 min GT 2 is determined and issued So TG1 was issued for 10 minutes 3 In the next measurement cycle at the time 25 min GT 3 determined and issued So TG2 was issued for 30 minutes...

Page 7: ...that any expansion of the road covering does not affect the cable The road sensor cables must not be subjected to tensile force during installation Warning Damage to the cable sheath or external sensors causes water ingress into the sensor Sensors with damaged cables must not be installed and can only be repaired by Lufft Install the road sensor in the hole provided in such a way that it is flush ...

Page 8: ...from the shortest possible distance 5m roadside The loop resistance of the overall cable must not exceed 5 Ω For example extension of 100 m with a 0 5 mm cable of 73 2 Ω km loop resistance and parallel connection of 4 cores each Per core 100 m cable results in a loop resistance of 7 3 Ω By parallel connection of 4 cores results in a loop resistance of 7 3 Ω 4 1 83 Ω Sample extension box ...

Page 9: ...sor Explanations Recommended extension cable A 2YF L 2Y Nx2x0 8 or similar Wirebundle 2x 2 times means 2 pair of wires e g 2x2x0 8 because 2 single wires are 1 pair for power supply RS485 Terminator resistor required means that either at Sensor input port or at muffle position a resistor of 120 Ohm should be connected parallel to the RS485 2 wire interface ...

Page 10: ...he cable length The sensor will have a capacity of max P 30W needed R1 R2 loop resistance U Voltage in the cabinet at the end of the cable 24V US voltage at the sensor I supply current I is calculated with the equation or For the calculated case with loop resistance 1 83 Ω Not considered here is the short piece of the standard cable ...

Page 11: ...able MUST be laid to ground Example of a standard Lufft UMB cabinet as well as examples of the grounding of the shield There are two existing cables color coded and numerical coded Connection to the road sensor cable 1 White Negative power supply 2 Brown Positive power supply 3 Green RS485_A 4 Yellow RS485_B Illustration 1 ISOCON UMB connection Warning Connecting the cables incorrectly will destro...

Page 12: ...MB in the road Straßensensor Road sensor Straßensensor Road sensor ext Temp Sens ext Temp Sens min Ø 16 cm Schlitz slit 2 cm breit wide 5 cm tief deep Straßenoberfläche Road surface Gießharzbeton casting resin concrete Gießharzbeton Casting resin conrete Straßenoberfläche Road surface 5 cm 6 cm min Ø 9 cm 5 9 c m 6 7 5 ARS31Pro extension ...

Page 13: ...emp Sens externer Temp Sens Gießharzbeton Casting resin concrete 6 cm Montagehilfe Installation aid Innensechskant Hexagon socket head screw Straßensensor Road sensor Innensechskant Hexagon socket head screw Straßensensor Road sensor Gießharzbeton Casting resin concrete Straßenoberfläche Road surface Montagehilfe Installation aid ARS31Pro extension ...

Page 14: ...fter approximately 1 minute after approximately 20 minutes the measurements for freezing temperature and saline concentration threat of icing are available provided that the ambient conditions allow such measurements The functionality of the road sensor must be checked after it has been installed The sensor must be connected to an evaluation unit e g PC with UMB Config Tool for this purpose Commun...

Page 15: ... Make sure that the connection cable on the underside of the sensor has not broken off The connectors must be pulled out without putting a strain on the cable The housing must be cleaned thoroughly before installing the new sensor Even small impurities on the seat of the seal can cause the sensor to fail in the long term No moisture must be trapped in the housing On connecting the connector to the...

Page 16: ...e device has a half duplex 2 wire RS485 interface with the following settings Data bits 8 Stop bit 1 Parity none Adjustable baud rates 1200 2400 9600 19200 38400 standard 19200 bit s Please do not change the baud rate of the sensor unless it is absolutely essential If the sensor is operated via ISOCON UMB the baud rate of the sensor must match the set baud rate on the ISOCON UMB The screened cable...

Page 17: ...t RS485 Pin Assignment 1 GND white 2 V 24 V brown 3 A Rx green 4 B Rx yellow The data and power supply cables are connected via a 4 pole terminal block Cable type LI 2YCYv2X2X0 5 is used Cable labeling on the pins is based on DIN 47100 The screened cable must be laid to the ground circuit connector in the control panel ...

Page 18: ...perature salt concentration detected in a measuring cycle the last identified freezing temperature will be delivered for the following 40 minutes default 40 interval can be adjusted During this interval the freezing temperature can only move to 0 if the sensor definitely detects clear water on the road The interval for maintaining the freezing temperature can be configured in the UMB Config Tool a...

Page 19: ... is the temperature difference by which the road surface temperature cools down in order to measure the threat of icing via the formation of dew or frost Delta T2 T2 If the threat of icing is detected via the temperature difference between the road temperature and the freezing temperature T2 describes the temperature difference for which upon lower deviation threat of icing is transmitted A value ...

Page 20: ...ticking the option FT data hold active With the option FT smoothing operator active a smoothing function for the freezing temperature can be activated The operator itself can be set between 0 maximum smoothing no change in the FT and 100 no smoothing After activating this function a start value of 40 is set for the smoothing operator This value can be adjusted if necessary Freezing temperature is ...

Page 21: ...ik GmbH Fellbach Germany 21 6 2 3 Measurement polling channels You can activate the measurement polling channels for the UMB Config Tool by clicking on the respective channel This setup has no influence on the channels which can be queried by the user software ...

Page 22: ...on of the firmware update can be found in the instructions for the UMB configuration tool New firmware is uploaded via the RS485 interface It is not necessary to open the housing for this purpose However firmware uploads must take place at a temperature between 0 and 60 C The update is controlled by means of PC software ...

Page 23: ...y includes one example of an online data request Please refer to the current version of the document Communications Protocol for Meteorological Sensors UMB protocol for details of the mode of operation 7 1 1 Framing The data frame is constructed as follows 1 2 3 4 5 6 7 8 9 10 11 8 len optional 9 len 10 len 11 len 12 len SOH ver to from len STX cmd verc payload ETX cs EOT SOH Control character for...

Page 24: ...s done as follows Sensor Class ID for road sensor is 4 4h Device ID serial number is 0001 001h Putting the class and device IDs together gives a destination address of 4001h PC Class ID for PC master device is 15 Fh PC ID is e g 1 001h Putting the class and PC IDs together gives a sender address of F001h The length len for the online data request command 4d 04h the command for the online data requ...

Page 25: ...utput format is fixed and not user configurable You can find an exact description in the document Communication Protocol for Meteorological Sensors After the HyperTerminal has started select File Properties Settings ASCII Configuration Enter 1 ms for the character delay 7 2 1 Construction ASCII commands are introduced by the character and ended with the character CR 0Dh There is always a blank spa...

Page 26: ...805 Act SalineConcentr MgCl float 0 100 816 Act Cryotech E36 by wgt float 0 100 817 Act Cryotech E36 by vol float 0 100 818 Act Safeway KF Hot float 0 100 821 Act SalineConcentr NaCl corr float 0 100 823 Act SalineConcentr CaCl corr float 0 100 825 Act SalineConcentr MgCl corr float 0 100 836 Act Cryotech E36 by wgt corr float 0 100 837 Act Cryotech E36 by vol corr float 0 100 838 Act Safeway KF H...

Page 27: ...her units Status generation and freezing temperature on the corrected channel If it is not possible to calculate the FT status because the ambient temperature is greater than the temperature set for the sensor factory setting 5 C the FT status is set to 0 and the freezing temperature value is set to 0 C If it is not possible to calculate the FT status because the road is dry the FT status is set t...

Page 28: ...direct measurement channel 901 delivers the value 0 If a threat of icing was detected via either the freezing temperature or the direct measurement channel 901 delivers the value 1 Before the first measurement if the road temperature is too high and there is an error in detecting the threat of icing channel 901 delivers the value 2 7 4 Mapping standards Mapping standard Temperature measurement ran...

Page 29: ...ed on Channel 900 0 Start conditions not fulfilled 1 Sensor surface dry 2 Freezing temperature was calculated 3 Freezing temperature was not calculated 4 Too cold to measure 5 Freezing temperature below road temperature minus 20 C Tg Tu 20 C 8 1 4 Status of threat of icing Transmitted on Channel 901 0 No threat of icing 1 Threat of icing 2 Threat of icing was not determined Channel 901 is only ava...

Page 30: ...the power input increases with the cable length For example with the 50 meter cable 8810 U051 current consumption approx 1 7 A For more details about enlarging the cable please read chapter 4 2 1 8 5 Interfaces 4 core connection cable with power supply and RS485 2 wire half duplex for configuration and measurement requests Ex works cable type LI 2YCYv2X2X0 5 8 6 Mechanical data excluding cable Dim...

Page 31: ...in design and construction with the Directives of the European Union and specifically the EMC Directive in accordance with 2004 108 EG The above mentioned equipment conforms to the following specific EMC Standards EN 61000 4 2 2009 12 ESD EN 61000 4 3 2011 04 Radiated electromagnetic field EN 61000 4 4 2011 10 Burst EN 61000 4 5 2007 06 Surge EN 61000 4 6 2009 12 Conducted disturbances induced by ...

Page 32: ...ce heavily soiled clean sensor surface with water Green protective foil not removed remove green protective foil Determined freezing temperature is reset after a few minutes Sensor is resetting Power supply overloaded Unstable power supply Related to an LCOM UMB Misconfiguration of LCOM thereby resetting the UMB Modules every x minutes default is 15 Minutes Salt concentration channel delivers erro...

Page 33: ...ice must be disconnected from the power supply whilst service and maintenance work is being carried out 12 Disposal The device must be disposed of in accordance with European Directives 2002 96 EC and 2003 108 EC waste electrical and electronic equipment Waste equipment must not be disposed of as household waste For environmentally sound recycling and the disposal of your waste equipment please co...

Page 34: ...utenbergstraße 20 70736 Fellbach P O Box 4252 70719 Fellbach Germany Phone 49 711 51822 0 Hotline 49 711 51822 52 Fax 49 711 51822 41 E mail info lufft de or your local distributor 13 1 Technical support Our hotline is available for technical questions via the following e mail address hotline lufft de You can also consult frequently asked questions at http www lufft com menu header FAQs ...

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