GESTRA LRR 1-50 Installation & Operating Instructions Manual Download

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LRR 1-50

LRR 1-51

Installation & Operating Instructions

819224-03

Conductivity Controller LRR 1-50

Conductivity Controller LRR 1-51

GESTRA Steam Systems

English

Summary of Contents for LRR 1-50

Page 1: ...LRR 1 50 LRR 1 51 Installation Operating Instructions 819224 03 Conductivity Controller LRR 1 50 Conductivity Controller LRR 1 51 GESTRA Steam Systems EN English ...

Page 2: ... Scope of supply 9 Name plate marking 10 In control cabinet Installing the conductivity controller Dimensions LRR 1 50 LRR 1 51 11 Key 11 Installation in control cabinet 11 In control cabinet Wiring the conductivity controller Wiring diagram for conductivity controller LRR 1 50 12 Key 12 Wiring diagram for conductivity controller LRR 1 51 13 Key 13 Connection of supply voltage 14 Connecting output...

Page 3: ... Tool 18 Operating the conductivity controller Key to codes on seven segment display 19 Commissioning procedure Setting parameters 20 Conductivity controller LRR 1 50 Setting switchpoints and parameters 21 Conductivity controller LRR 1 51 Setting switchpoints and parameters 22 Operation alarm and test Conductivity controller LRR 1 50 LRR 1 51 Indications and checking the functions of the MAX outpu...

Page 4: ...nt of boiler water is measured in microSiemens cm μS cm However in some countries ppm parts per million is used for conductivity readings Conversion 1µS cm 0 5 ppm Operating position of the continuous blowdown valve Continuous blowdown also known as top blowdown is the process where boiler water is removed from the water s surface in order to reduce the concentration of dissolved solids As the nam...

Page 5: ...onductivity has fallen below the adjusted hysteresis the valve is motored into the OPERATING position To avoid loss of boiler water the controller will automatically close the valve when the boiler is shut down Two flashing LEDs indicate whether the continuous blowdown valve is opening or closing The MAX limit can be variably adjusted within the measuring range Once the MAX limit is reached the MA...

Page 6: ...evel of competence Danger The terminal strips of the equipment are live during operation This presents the danger of electric shock Always cut off power supply to the equipment before mounting removing or connecting the terminal strips Attention The name plate specifies the technical features of the equipment Note that any piece of equipment without its specific name plate must neither be commissi...

Page 7: ... EN 60079 11 section 5 7 According to the European Directive 2014 34 EU the equipment must be equipped with approved Zener barriers if used in potentially explosive areas Applicable in Ex zones 1 2 1999 92 EC The equipment does not bear an Ex marking VdTÜV Bulletin Water Monitoring 100 The conductivity controller LRR 1 50 LRR 1 51 in conjunction with conductivity electrode LRG 1 and conductivity t...

Page 8: ...tegrated pushbutton for parameter setting and testing MAX alarm 1 seven segment LED display four digits green 1 red LED for MAX alarm 2 amber LEDs indicating continuous blowdown valve opens closes 1 four pole code switch for configuration settings Housing Housing material base polycarbonate black front polycarbonate grey Conductor size 1 x 4 0 mm solid per wire or 1 x 2 5 mm2 per stranded wire wit...

Page 9: ... be put into operation 24 hours Relative humidity max 95 no moisture condensation Approvals TÜV certificate VdTÜV Bulletin Wasserüberwachung Water Monitoring 100 Requirements made on water monitoring equipment Type approval no TÜV WÜL 12 017 see nameplate Scope of supply LRR 1 50 1 Conductivity switch LRR 1 50 1 Adhesive plate ppm 1 Installation manual LRR 1 51 1 Conductivity switch LRR 1 51 1 Adh...

Page 10: ...consumption Disposal note Type approval no Connection for conductivity electrode Type approval no Measuring range External fuse for output contacts Nameplate LRR 1 50 below Connection actual value output Supply voltage Fuse provided on site Power consumption Disposal note Type approval no Connection for conductivity transmitter Type approval no Nameplate LRR 1 51 below Connection actual value outp...

Page 11: ...51 Fig 2 1 Upper terminal strip 2 Lower terminal strip Key Installation in control cabinet The conductivity controller LRR 1 50 LRR 1 51 is clipped onto the support rail type TH 35 EN 60715 in the control cabinet Fig 1 4 3 Housing 4 Supporting rail type TH 35 EN 60715 4 3 1 2 46 74 120 15 ...

Page 12: ...thermometer can be connected 8 Central earthing point CEP in control cabinet Key 9 Conductivity electrode LRG 16 9 with integrated resistance thermometer 0 MAX output contact a Supply voltage L 2 b Supply voltage N OPEN OPERATING CLOSED Actuator EF M 0 5 A M 0 5 A 5 8 b 7 6 8 9 5 a 0 L2 must remain live after the burner stand by operation and therefore also the supply voltage for the controller is...

Page 13: ...for the controller is shut down until the actuator has closed the continuous blow down valve continued OPEN OPERATING CLOSED Actuator EF M 0 5 A 5 Connection of supply voltage 24 V DC with fuse 0 5 A semi delay provided on site 6 Actual value output 4 20 mA 7 Conductivity transmitter LRGT 1 4 20 mA with earthing point 8 Central earthing point CEP in control cabinet 0 MAX output contact a Supply vo...

Page 14: ...suring systems Connected inductive loads must be provided with suppressors such as RC combinations as specified by the manu facturer When used as conductivity limiter the conductivity controller LRR 1 50 LRR 1 51 does not interlock automatically when the readings exceed the MAX limit If an interlock function is required for the installation it must be provided in the follow up circuitry safety cir...

Page 15: ...ccordance with the wiring diagram Fig 3 4 Connect the screen only once to the central earthing point CEP in the control cabinet Make sure that connecting cables leading to the equipment are segregated and run separately from power cables Any item of equipment that you want to connect to the terminals for the actual value output 4 20 mA option must be certified to have at least double or reinforced...

Page 16: ...quipment preconfigured control cable assemblies with male and female connectors of various lengths are available as add on equipment Note that the recommended control cable is not UV resistant and if installed outdoors must be protected by a UV resistant plastic tube or cable duct To connect the conductivity controller LRR 1 50 remove the connector and wire the terminal strip according to the wiri...

Page 17: ...e Si 0 h n Purging duration Sd 3 minutes valve opens 3 min and closes 3 min n Code switch a S 2 ON S1 S3 S4 OFF Conductivity controller LRR 1 51 n MAX switchpoint AL Hi 6000 μS cm n Setpoint SP 3000 μS cm n Dead band 5 of setpoint n Reset hysteresis Setpoint 10 of the setpoint MAX limit 3 fixed setting n Lower end of measuring range SinL 100 μS cm n Upper end of measuring range SinH 6000 μS cm n S...

Page 18: ...and settings If you choose ppm as unit of measurement please stick the adhesive label supplied with the equipment onto the unit specification on the housing To change the setting proceed as follows n Insert a screwdriver to the right and left of the arrow markings between the terminal strip and the front frame n Unlock terminal strip on the left and right side For this purpose move screwdriver in ...

Page 19: ...or Temperature sensor defective temperature reading too high E 005 Error Sensor defective measured value too low E 006 Error Sensor defective measured value too high Only LRR 1 50 CF Correction Factor Correction factor adjustable between 0 05 and 5 000 adjustable in increments of 0 001 inP input Pt 100 Temperature compensation YES no tC Temperature coefficient Temperature coefficient Tk 0 0 3 0 pe...

Page 20: ...etting For selecting the parameter Press and hold down the push button of the rotary button First digit 0000 flashing Parameterization mode active You can change the first digit Turn rotary button A new value is indicated To increase the value turn rotary button to the right to decrease turn it to the left Press push button Each time you press the but ton the system moves to the next digit 2nd 3rd...

Page 21: ...sated for Conductivity electrode LRG 1 with separate resistance thermometer and LRG 16 9 Enable temperature compensation Select setting inP and turn rotary button to the right The word YES appears Save the setting Setting the temperature coefficient Select temperature coefficient tC set the required percentage value and save the setting Once the operating temperature is reached measure the electri...

Page 22: ...djust reset hysteresis between 1 and 25 of the setpoint Setting the upper and lower end of measuring range Select parameter Sin L set the desired conductivity and save the setting Adjust the lower end of the measuring range in steps of 0 0 0 5 100 0 μS cm Select parameter Sin H set the desired conductivity and save the setting Adjust the upper end of the measuring range in steps of 20 0 100 0 200 ...

Page 23: ... for 3 sec MAX output contact 21 23 closed 22 23 open After 3 sec MAX LED is not illuminated MAX output contact 21 23 open 22 23 closed Test finished release push button Seven segment display Test is indicated Note If you continue to hold down the push button a new test is started You can abort the test any moment by releasing the push button Turn the rotary button until the actual value is shown ...

Page 24: ...and if necessary replace it with a new one Check wiring short circuit interruption E 002 Temperature sensor defective temperature reading too high E 005 Conductivity electrode defective measured value too low Check conductivity electrode and if necessary replace it Check electrical connection Conductivity transmitter defective measuring current 4 mA Check conductivity transmitter and if necessary ...

Page 25: ...nuals If equipotential bonding currents are to be expected e g in outdoor installations connect screen only at one end n HF interference suppression by means of hinged shell ferrite rings Disposal For the disposal of the equipment observe the pertinent legal regulations concerning waste disposal If faults occur that are not listed above or cannot be corrected please contact our service centre or a...

Page 26: ...26 For your notes ...

Page 27: ...27 For your notes ...

Page 28: ...world www gestra de 819224 03 04 2017csa 808889 03 GESTRA AG Bremen Printed in Germany GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon 49 421 3503 0 Telefax 49 421 3503 393 E mail info de gestra com Web www gestra de ...

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GESTRA LRR 1-50, Installation & Operating Instructions Manual

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