GESTRA NRS 1-53 Original Installation Instructions Download Page 1 | Manualshive

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Level Switch

NRS 1-53

Original Installation Instructions

819177-01

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Summary of Contents for NRS 1-53

Page 1: ...1 E N English Level Switch NRS 1 53 Original Installation Instructions 819177 01 ...

Page 2: ... 8 Key 8 Installation in control cabinet 8 Name plate marking 9 In control cabinet Mounting level switch Wiring diagram for level switch NRS 1 53 10 Key 10 Connecting supply voltage 11 Connecting MIN 1 MIN 2 output contact 11 Connecting level electrode 11 Tools 11 In control cabinet Wiring level switch Connecting several level electrodes 12 Key 12 Examples of configuration NRS 1 53 NRS 1 54 connec...

Page 3: ...ng switchpoint and function 16 17 Commissioning procedure Indications and operation 18 Operation alarm and test Factory settings Factory setting 14 Protection against high frequency interference 19 Decommissioning replacing the equipment 19 Disposal 19 Further notes ...

Page 4: ...s are exposed After the de energizing delay the MIN 1 MIN 2 output contact will be switched over At the same time the LEDs for MIN 1 and MIN 2 change from green to red Even if only one electrode rod is connected both output contacts will be switched over after the de energizing delay and the LEDs change from green to red When the equipment is used as water level limiter the safety circuit for the ...

Page 5: ...fied in 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 LV Low Voltage Directive and EMC Electromagnetic Compatibility The equipment meets the requirements of the Low Voltage Directive 2014 35 EU an...

Page 6: ...s and adjustors 1 pushbutton Test for simulating MIN 1 MIN 2 alarm 2 red green LEDs for indicating operating mode and MIN 1 MIN 2 alarm 1 green LED indicating Power ON 1 code switch with 4 poles for changing the sensitivity 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 with sleeve to DIN 46228 or...

Page 7: ... Storage temperature 20 70 C defrosting time of the de energized equipment before it can be put into operation 24 hours Relative humidity max 95 no moisture condensation Approvals TÜV certificate VdTÜV Bulletin Water Lever 100 Requirements made on water level limiting control equipment Type approval no TÜV WR WB XX 424 see name plate Technical Data continued Scope of supply NRS 1 53 1 Level switch...

Page 8: ...on in control cabinet The level switch NRS 1 53 is clipped onto the support rail 4 type TH 35 EN 60715 in the control cabinet Fig 1 3 Housing 4 Supporting rail type TH 35 EN 60715 In control cabinet Mounting level switch Dimensions NRS 1 53 Fig 1 2 74 1 4 3 46 120 ...

Page 9: ...ation Protection Manufacturer Output contacts Fig 2 Ambient temperature External fuse for output contacts Material number Supply voltage Fuse provided on site Power consumption Disposal note Approvals Connection of level electrodes Serial number Safety note Mat Nr 392621 M 0 5A 24 V 20 NRG 1 ER 5 2 VA TÜV WR WB xx 424 _ 75 42 ...

Page 10: ...n site 6 Reference electrode or vessel used as functional earth 7 MIN 2 electrode rod or MIN electrode rod 8 MIN 1 electrode rod 9 Central earthing point CEP in control cabinet 0 MIN 1 output contact a MIN 2 output contact b Wire link provided on site if only one electrode rod is used Key Fig 3 5 9 7 M 0 5 A semi delay 8 6 a 0 b 0 a M 0 5 A semi delay 6 7 9 5 ...

Page 11: ...oes not interlock automatically when the water falls below the MIN level If an interlock function is required for the installation it must be provided in the follow up circuitry safety circuit The circuitry must meet the requirements of the EN 50156 When switching off inductive loads voltage spikes are produced that may impair the operation of con trol and measuring systems Connected inductive loa...

Page 12: ... 52 with five pole connector d Level electrode ER 5 4 pole connector e Level electrode ER 5 6 pole connector Key f Level electrode NRG 16 4 g Central earthing point CEP in control cabinet d f Fig 4 Fig 5 Fig 6 Fig 7 c e MIN 1 MIN 2 MIN 1 MIN 2 MIN 1 MIN 2 MIN 1 MIN 2 g g g g NRS 1 53 NRS 1 53 NRS 1 53 NRS 1 53 ...

Page 13: ... Wiring level electrode continued Examples of configuration NRS 1 53 NRS 1 54 connection of several level electrodes e Fig 8 c MAX MIN g g NRS 1 54 NRS 1 53 g NRS 1 53 NRS 1 54 Fig 9 f MIN MIN MAX MIN Fig 10 NRS 1 53 ...

Page 14: ... conductor size 0 5 mm2 e g LiYCY 4 x 0 5 mm2 max length 100 m Wire terminal strip in accordance with the examples Fig 4 to 10 Check the connection of the screen to the central earthing point CEP in the control cabinet Attention n Please observe the instructions given in the installation operating manual for the NRG 10 52 NRG 16 52 NRG 16 4 and ER 5 1 n Make sure that connecting cables leading to ...

Page 15: ...f supply voltage n Remove lower terminal strip Fig 10 n Insert a screwdriver to the right and left between the terminal strip and the front frame n Unlock terminal strip on the left and right side For this purpose move screwdriver in direction of the arrow n Remove the terminal strip n Set switch S4 of code switch h to ON response sensitivity 0 5 μS cm n Re attach lower terminal strip n Apply supp...

Page 16: ...ime delay elapsed MIN 1 output contact 21 23 closed 22 23 open Lower water level until it is below MIN 2 level MIN 2 electrode rod is exposed MIN 2 LED flashes red De energizing delay is running MIN 2 LED is illuminated red Time delay elapsed MIN 2 output contact 16 18 closed 17 18 open Checking switchpoint and function if 1 electrode rod is connected Lower water level until it is below MIN level ...

Page 17: ... per vent hole in protection tube does not exist or is obstructed Check installation of level electrode Make sure that the level in the protection tube corresponds to the actual water level Water level between MIN and MAX MIN 1 MIN 2 LEDs are illuminated red Electrode rods are too short Replace level electrode and cut electrode rod s to the length dictated by MIN 1 MIN 2 switchpoint Electrode rod ...

Page 18: ... delay is running MIN 1 MIN 2 LEDs are illumi nated red Time delay elapsed MIN 1 output contact 21 23 closed 22 23 open MIN 2 output contact 16 18 closed 17 18 open Operation Alarm and Test Indicators and adjustors Testing MIN 1 MIN 2 alarm During operation Water level between MIN and MAX Press and hold down button Test MIN 1 LED flashes red De energizing delay is running MIN 1 LED is illuminated ...

Page 19: ...serve the pertinent legal regulations concerning waste disposal High frequency interference can be caused by out of phase switching operations Should sporadic failures or malfunctions occur take the following remedial actions in order to suppress interference n Provide inductive loads with RC combinations according to manufacturer s specification to ensure interference suppression n Increase the d...

Page 20: ...8848 01 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 Agencies all over the world www gestra de ...

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