Flowserve NRR 2-40 Manuel d'utilisateur

1Installation Instructions 810369-03Level Controller Type NRR 2-40NRR 2-40

10WiringUNITRONIC® is a registered trademark of LAPP Kabelwerke GmbH, StuttgartNRR 2-40InstallationInstallation on mounting rail1. Clip level controll

11Wiring – continued –Attention Wire equipment in series. Star-type wiring is not permitted. Interlink screens of control cables such that electrical

12Node IDBasic AdjustmentsCAN busAll level and conductivity controllers and associated electrodes are interconnectedby means of a CAN bus using the CA

13 Switchpoint 1: 80% Switchpoint 4: 20%The level controller features the following factory set default values: Relay with de-energizing delay swit

14Indicator LEDs flash rapidlyNRR 2-40Apply power to the unit.The four indicator LEDs flash rapidly.The LED “Power” lights up.The test cycle takes abo

15Commissioning – continued –Adjusting the control range – continued –Press button briefly.Raise liquid level until the desired upperlimit of

16Switchpoint 1Switchpoint 2Switchpoint 3Switchpoint 4Selected control rangeYou can establish two switchpoints and a proportional band Xp within the c

17Commissioning – continued –Establishing switchpoints and proportional bandPress button briefly.Raise or lower the liquid level in thevessel u

18Press button briefly.Switchpoint 3 is now saved.Press button briefly.The upper limit of the proportional bandXp is now selected (s

19Commissioning – continued –Establishing switchpoints and proportional band – continued –Press button briefly.Raise liquid level until switch

2ContentsPageImportant NotesUsage for the intended purpose ... 7Safe

20Commissioning – continued –Calibrating the feedback potentiometer of an external control valveThe feedback potentiometer of an external control val

21OperationNormal operationNormal operation, controller is working.The green LEDs 2 and 3 flash when theexternal control valve is opened orclosed.All

22Operation – continued –Relay test high/low-level alarmHold down button .LED 4 goes out.A low-level alarm is simulated forswitchpoint 4.Press bu

23System Malfunctions – continued –The sources of malfunctions occurring in CAN bus systems operating with severalbus-based stations must be analysed

24System Malfunctions – continued –The four indicator LEDs flash slowly.High/low-level alarmFault:The max. admissible temperature in the electrode te

25LED “Bus status” flashes slowly.Fault:Data transfer in CAN bus interrupted.Remedy:The bus cables have to be correctly connected according to the wir

26LED “Power” flashes slowly.Fault:The power supply unit (PSU) is overloaded and may be misused for othercomponents.Remedy:Check load of power supply

27Operation Malfunctions – continued –Fault-finding list for troubleshooting – continued –Fault:In spite of correct wiring and commissioning of the

28Fig. 13The node IDs of the individual units have to be adjusted manually.For more information refer to the corresponding installations manuals.Contr

29Annex – continued –Baud rateS8S9 S0250 kBit/sCable length125 mOFFONOFFOFF125 kBit/sONON250 mON100 kBit/sOFFOFF 335 mON50 kBit/sOFFON500 mON20 kBit/

3Wiring DiagramNRR 2-40 as three-position stepping controllerFig. 1Fig. 2Paired cablePaired cable

30Fig. 17 (Factory setting of neutral band)Annex – continued –To guarantee a smooth controlled system you can establish a neutral band for thesetpoin

31Annex – continued –Adjust neutral band according to fig. 18. Neutral band in this example “2 %”Status LEDs flash rapidlyApply mains voltage.The fo

32Annex – continued –S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 N-ZoneOFF OFF OFF OFF OFF OFF OFF OFF OFF OFF 0 %OFF OFF OFF OFF OFF OFF OFFONOFF OFF 1 %OFF OFF

33For your notes

34We hereby declare that the equipment NRR 2-40 conforms to the following Europeanguidelines: LV guideline 73/23/eec version 93/68/eec EMC guideline

35118Example of InstallationFig. 19Fig. 201007320 20MAX 55 °CMAX 95%

36810369-03/1103c · ©2000 GESTRA GmbH · Bremen · Printed in GermanyGESTRA GmbHPostfach 10 54 60, D-28054 Bremen, Münchener Str. 77, D-28215 BremenTe

4Fig. 4Fig. 3Paired cablePaired cableNRR 2-40 as continuous controllerWiring DiagramControl terminaland display unitURB 1Level controllerNRR 2-40Level

5Parts DrawingsFig. 5Fig. 6123456ABA78

6KeyLED 1 – Switchpoint 1LED 2 – Control valve closingLED 3 – Control valve openingLED 4 – Switchpoint 4LED “Bus status”LED “Power”Enter button / Test

7Important NotesSafety NoteThe equipment must only be installed by qualified staff.Qualified staff are those persons who – through adequate training i

8FunctionAt regular intervals the level electrode NRG 26-40 sends a data telegram to the levelcontroller NRR 2-40. The data are transferred via a CAN

9Technical DataType approval no.NRR 2-40: TÜV . 98-399Input / OutputInterface for CAN bus to DIN ISO 11898 CANopenFeedback potentiometer 1000ΩOutput