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GESTRA LRS 1-50, Original Installation & Operating Manual

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GESTRA LRS 1-50 Original Installation & Operating Manual Download Page 3

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LRS 1-50 - USA - Installation & Operating Manual - 

850704-01

Contents

Changing the factory default settings ............................................................................................... 21

Changing the unit of measurement ................................................................................................ 21

Operating the conductivity switch ..................................................................................................... 22

Meaning of codes on the 7-segment display .................................................................................. 22

Bringing into service .......................................................................................................................... 23

Setting parameters ........................................................................................................................ 23
Setting switchpoints and parameters ............................................................................................. 24

Operation, alarm and test ................................................................................................................... 25

Password protection ...................................................................................................................... 26
Calibration ..................................................................................................................................... 27

Fault indications and troubleshooting ............................................................................................... 28
Important notes .................................................................................................................................. 29

Action against high-frequency interference .................................................................................... 29

Taking out of service .......................................................................................................................... 30
Disposal .............................................................................................................................................. 30
UL components ................................................................................................................................... 30
Declaration of Conformity 
Standards and directives ................................................................................................................... 31

Summary of Contents for LRS 1-50

Page 1: ...EN USA English Conductivity Switch LRS 1 50 Original Installation Operating Manual 850704 01 ...

Page 2: ...ction 11 Technical data 12 Example rating plate identification 13 Factory default settings 14 Dimensions of the LRS 1 50 15 Preparing for installation 16 Installation 17 In the control cabinet Electrically connecting the conductivity switch 18 Wiring diagram of conductivity switch LRS 1 50 18 Connecting the supply voltage 19 Connecting the output contacts 19 Connecting conductivity electrode LRG 1...

Page 3: ...s on the 7 segment display 22 Bringing into service 23 Setting parameters 23 Setting switchpoints and parameters 24 Operation alarm and test 25 Password protection 26 Calibration 27 Fault indications and troubleshooting 28 Important notes 29 Action against high frequency interference 29 Taking out of service 30 Disposal 30 UL components 30 Declaration of Conformity Standards and directives 31 ...

Page 4: ...ition BAN 850704 00 09 2021cm Copyright All rights reserved Any misuse particularly reproduction and dissemination to third parties is not permitted The General Terms Conditions of GESTRA AG apply Scope of supply product package LRS 1 50 1 conductivity switch LRS 1 50 1 adhesive sign for ppm 1 Installation Operating Manual ...

Page 5: ...nd follow all instructions Please also read the instructions for use of any accessories The Installation Operating Manual is part of the product package Keep it in an easily acces sible location Availability of this Installation Operating Manual Make sure this Installation Operating Manual is always available to the operator If you pass on or sell the equipment to a third party please also hand ov...

Page 6: ...situation that results in death or serious injury WARNING Warning of a dangerous situation that may possibly result in death or serious injury CAUTION Warning of a situation that may result in minor or moderate injury ATTENTION Warning of a situation that results in damage to property or the environment ...

Page 7: ...t of the plant The operating point describes the operating parameters within which a plant or boiler is operated in its nominal range In a steam boiler for example these parameters would be output pressure and temperature The design data may be a lot more stringent however A boiler that is operated at 145 psi 10 bar and 356 F 180 C may be designed to withstand a pressure of 870 psi 60 bar and a te...

Page 8: ...ched The LRS 1 50 is classified as an operating control in accordance with UL 60730 1 When used as intended the LRS 1 50 conductivity switch can be combined in a circuit with the LRG 16 4 and LRG 16 9 conductivity electrodes Improper use There is a danger of death due to explosion if the equipment is used in potentially explosive atmospheres Do not use the equipment in potentially explosive atmosp...

Page 9: ...plant before performing connection work Check that the plant is not carrying live voltage before commencing work Attempts to repair the equipment will cause the plant to become unsafe The LRS 1 50 conductivity switch may only be repaired by the manufacturer GESTRA AG Only replace faulty equipment with identical equipment from GESTRA AG Basic safety information ...

Page 10: ...rought into service by qualified and competent staff Operation Boiler service technician Staff trained by the plant operator Maintenance work Specialist staff Fitting and maintenance work may only be performed by authorized staff who have undergone specific training Refits Specialist staff Persons trained by the plant operator to work with pressure and temperature Notes on product liability The ma...

Page 11: ... changes thanks to linear temperature compensation the reading is referenced to 77 F 25 C over the entire measuring range and indicated as an actual value on the 7 segment LED display The MIN MAX limits can be varied as desired within the measuring range If the MIN or MAX limit is reached the MIN or MAX output contact switches and the MIN or MAX LED lights up It switches back when the value is abo...

Page 12: ...y 2 red LEDs for MIN MAX alarm 1 4 pole code switch for configuration Terminal box Terminal box material base of black polycarbonate front of gray polycarbonate Wire size 1 x AWG12 4 0 mm2 solid or 1 x AWG14 2 5 mm2 stranded with sleeve acc to DIN 46228 or 2 x AWG16 1 5 mm2 stranded with sleeve acc to DIN 46228 min 0 004 in 0 1 mm Terminal strips can be removed separately Terminal box attachment M...

Page 13: ... M0 5A 4W 1 2 3 4 6 7 8 5 _ 24V 20 Input rating 24VDC 4W LRS 1 50 Rating plate top Safety information Output contacts Ambient temperature Type designation Manufacturer Supply voltage Fuse provided by customer Power consumption Disposal information Connection for conductivity electrode Measuring range External fuse for output contacts Protection Rating plate bottom Fig 1 Example rating plate identi...

Page 14: ... install the equipment Check that the plant is not carrying live voltage before commencing work Conductivity Switch LRS 1 50 n MAX switchpoint AL Hi 3000 ppm 6000 µS cm n MIN AL Lo 250 ppm 500 µS cm n Switching hysteresis 3 factory default n Correction factor CF 1 n Temperature compensation inP No n Temperature coefficient tC 2 1 C n Damping FiLt oFF n Password PW oFF n Code switch a All switches ...

Page 15: ...ation Operating Manual 850704 01 Dimensions of the LRS 1 50 Key Fig 2 4 3 1 2 1 81 in 46 mm 2 91 in 74 mm 4 72 in 120 mm 0 6 in 15 mm 1 Upper terminal strip 2 Lower terminal strip 3 Terminal box 4 Support rail TH 35 EN 60715 ...

Page 16: ...ical data see page 12 Do not operate the equipment if the temperature is below freezing At temperatures below freezing use a suitable heat source e g control cabinet heater etc Connect all parts of the plant to a central grounding point to prevent equalizing currents Use UV resistant cable ducts for routing the connecting cable Take further measures to protect the equipment from lightning insects ...

Page 17: ... a risk of electric shock during work on electrical systems Switch off the voltage to the plant before you install the equipment Check that the plant is not carrying live voltage before commencing work 1 Switch off the voltage to the plant and secure any surrounding equipment in the control cabinet that is live so it cannot be touched 2 Carefully press the unit onto the support rail until the hold...

Page 18: ...Key Fig 3 8 MIN MAX MIN MAX M0 5A medium time lag M0 5A medium time lag 5 5 0 9 9 0 8 6 7 5 Connection of supply voltage 24 V DC with 0 5A medium time lag fuse provided by customer 6 Conductivity electrode LRG 1 7 Conductivity electrode LRG 16 9 with integrated resistance thermometer 8 Central grounding point CGP in control cabinet 9 MIN output contact 0 MAX output contact ...

Page 19: ... a shielded TC ER control cable with minimum wire size AWG18 e g OELFLEX CONTROL TM CY 3G1 to connect the equipment Connect the terminal strip as shown in the wiring diagram in Fig 3 Connect the shield to the central grounding point CGP in the control cabinet Route the connecting cable between items of equipment separately from power lines Connecting the LRG 16 9 conductivity electrode The LRG 16 ...

Page 20: ...V resistant plastic tube or cable duct if installation is outdoors To connect the LRS 1 50 conductivity switch please remove the connector and wire the terminal strip as shown in the wiring diagram in Fig 3 Generalized wire colors cannot be provided here because the cables originate from different manufacturers Please take the cable pin assignment into consideration before connection Connect the s...

Page 21: ...onductivity readings and set values To change the setting proceed as follows n Insert a screwdriver between the terminal strip and the front frame at the arrow markings on the right and left n Release the terminal strip on the right and left by turning the screwdriver in the direction of the arrow n Detach the terminal strip n Set switch S4 of the code switch a to ON ppm parts per million n Insert...

Page 22: ... increments of 0 1 tESt Test Test of output relays FiLt Filter Switching the filter on off damping PW Password on password protection is enabled oFF password protection is disabled Factory default settings 1902 cannot be changed Indicated in parameterization mode quit Quit Entry is not confirmed done Done Entry is confirmed Indicated in the event of errors E 001 Error Faulty temperature sensor tem...

Page 23: ... each press 2nd 3rd or 4th digit flashes from right to left 2nd 3rd or 4th digit can now be changed using the rotary knob Turning clockwise increases the value turning counterclock wise reduces the value If you take no further action quit is briefly displayed After this the display toggles be tween the parameter and the old value The system automatically returns to parameter settings and your entr...

Page 24: ...ated actual value matches the reference read ing This adapts the conductivity measurement to the specific conditions of the installation or com pensates for deviations during operation Conductivity electrode LRG 16 9 with resistance thermometer Switching on temperature compensation Select setting inP and turn the rotary knob clockwise YES appears Save the setting Setting the temperature coefficien...

Page 25: ...tion Function In operating mode Conductivity between MIN and MAX Select Test parameter Press and hold push button 7 segment display Test flashes MAX LED lights up red for 3 seconds MAX output contact 21 23 closed 22 23 open MIN and MAX LEDs are not lit for 1 second MIN output contact 16 18 open 17 18 closed MAX output contact 21 23 open 22 23 closed MIN LED lights up red for 3 seconds MIN output c...

Page 26: ...ou can enter the second digit Repeat the last two steps until the password has been entered in full The entered password XXXX is shown Enter the password in full Press and hold the push button donE The correct password has been entered The parameter can be edited FAiL The wrong password has been entered The parameter is still password protected quit Timeout The system returns to parameter settings...

Page 27: ... first digit Briefly press the push button The second digit from the right flashes xxXx You can enter the second digit Repeat the last two steps until you have entered the conductivity in full The entered conductivity xxxx is shown Enter the conductivity in full quit Timeout The system returns to parameter settings Entry has been discontinued due to a lack of activity Press and hold the push butto...

Page 28: ...005 Faulty conductivity electrode reading too low Check conductivity electrode and replace if necessary Check electrical connection E 006 Faulty conductivity electrode reading too high Check conductivity electrode and replace if necessary Check electrical connection E 013 MIN switchpoint higher than MAX switchpoint Reset switchpoints E 097 Walkthrough application error Internal error Replace equip...

Page 29: ...ference n Provide inductive loads with RC combinations as specified by the manufacturer n Route the connecting cables to the conductivity electrode separately from power lines n Increase the distance from sources of interference n Check that the shield is correctly connected Check the shield of items of equipment with the aid of the Installation Operating Manuals If equalizing currents are likely ...

Page 30: ...ont frame at the arrow markings on the right and left n Release the terminal strip on the right and left by turning the screwdriver in the direction of the arrow n Detach the terminal strip n Release the white slider holder at the bottom of the unit and detach the unit from the support rail Disposal Dispose of the conductivity switch in accordance with statutory waste disposal regulations UL compo...

Page 31: ...You can download the Declaration of Conformity online at www gestra com or request certificates from the following address GESTRA AG Münchener Straße 77 28215 Bremen Germany Tel 49 421 3503 0 Fax 49 421 3503 393 e mail info de gestra com Web www gestra com Modifications to the equipment not approved by us will invalidate Declarations of Conformity and certificates Declaration of Conformity Standar...

Page 32: ...58 01 GESTRA AG Bremen GESTRA AG Münchener Straße 77 28215 Bremen Germany Tel 49 421 3503 0 Fax 49 421 3503 393 e mail info de gestra com Web www gestra com You can find our authorized agents around the world at www gestra com ...

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