NRS 1-40 - Flowserve Corporation
Contents
1. The baud rate is set via a code switch Reduce baud rate if cable is longer than specified in the table Make sure that all bus nodes have the same settings To protect the switching contacts fuse circuit with 2 5 A anti surge fuse or according to TRD regulations 1 0 A for 72 hrs operation When a max cable length of more than 125 m up to 1000 m is desired make sure to modify the baud rate accordingly Refer to pages 25 and 26 for more details UNITRONIC is a registered trademark of LAPP Kabelwerke GmbH Stuttgart Wiring continued Wiring Diagram Wiring diagram see page 3 A 10 Attention B Wire equipment in series Star type wiring is not permitted E Interlink screens of control cables such that electrical continuity is ensured and connect them once to the central earthing point CEP W To protect the switching contacts fuse circuit with 2 5 A slow blow or according to TRD regulations 1 0 A for 72 hrs operation W f more than one system component is connected to a CAN bus network provide the first and last equipment with a terminating resistor of 120 Q Fig 2 B Use only one water level limiting system per CAN bus network W The CAN bus line must not be interrupted while operating with one or more system components An interruption will result in disconnection caused by a malfunction If the switching controller has to be replaced be sure to remove first the terminal strips Fig 42. and NRG sensor System Malfunction Use fault finding list to identify the fault s Cut off power supply to the equipment Step 3 Apply mains voltage to bus devices of the system e g NRS and NRG Check next system System O K Detach terminal strips between bus devices of the system e g NRS and NRG 15 System Malfunctions continue A Danger The terminal strip of the NRS 1 40 is live during operation This presents the danger of electric shock Cut off power supply before fixing or removing the equipment System Malfunction 1 LED 1 flashes slowly LED 1 flashes slowly A system malfunction in level electrode 1 was detected d NRS 1 40 Qoo Hold down button Y LED 1 and 2 flashes slowly LED 1 and 2 flashes slowly 4 NRS 1 40 QOoOOQr N test i Fault The max admissible temperature in the terminal box of the electrode has been exceeded Remedy Insulate electrode flange against heat radiation Hold down button LED 2 flashes slowly LED 2 flashes slowly NRS 1 40 i Fault The electronic circuit board of the level electrode is defective Remedy Replace electronic circuit board of the level electrode 1 The system will continue to work once NRS 1 40 the causes of the system malfunctio
3. E Low level alarm for water level limiting system two level electrodes NRS 1 40 D0006 test Low level alarm for water level limiter LED 1 flashes rapidly LED 1 remains permanently illuminated after HO the de energizing delay Low level alarm for water level limiting system LED 1 and 2 flash rapidly LED 1 and 2 remain permanently illuminated after the de energizing delay 13 Alarm continued QD Note W The switching controller does not have its own lock out circuit Lock out and manual reset facilities are to be provided externally E The signal output terminal 7 8 is instantaneously energized no delay of response in the event of an alarm System Malfunctions Faulty installation and or configuration of CAN bus components excessive temperatures in the devices defective electronic component parts or electromagnetic interferences of the supply system can result in system malfunctions There are four system malfunctions that might occur in the level electrode and the switching controller m Max admissible temperature in electrode terminal box exceeded E No or faulty communication between controller and electrode W Fault in CAN bus W Failure of 24 V power supply unit built in switching controller NRS 1 40 The malfunction information is updated with every self test switching controller every 3 sec level electrodes every 10 sec If no faults have ocurred the m
4. NRS 1 40 Installation Instructions 810635 03 Level Switch Type NRS 1 40 spector CAN RASE FLOWSERVE dd Flow Control Division PRESSURE EQUIPMENT DIRECTIVE Contents Page Important Notes Usage for the intended purpose ss 6 ida c 6 Danger e yeh onesie eek ha 6 Explanatory Notes Scope of SUDpDIyuo atan Me reef dat 6 Pty Bt 6 unctionis oec un M LRL LM t E ni e 7 T chnicaldat s na Em 8 Installation NRS AOL accel at RE c p P EU UE E E e Se nent ent nan 9 Example oftinstall tion eet tette e eme NI A lhl ods 29 Wiring Wiring diagralm a lali 3 9 10 Basic Adjustment CAN D S iii A 11 eeu 11 Factory setting eene et leticia tenir eae vedo cn 11 Commissioning SEU H U i m 12 Operation NAS 1 40 gt UE ER E nn cs Pe Eg ee bo dde es 12 Test Cycle NRS AO pietate cette Den lla dant tute o bes eta 12 13 Alarm Low level alarm for water level limiter ssm nn nrnnnrnrnnn 13 Low level alarm for water level limiting system e 13 System Malfunctions Fault analysis system faults 1 7 sssseemee 14 22 Operation Malfunctions Fault finding list for troubleshooting senn em 23 Emergency Operation Emergency operation of water level limiting system eee 24 Annex Factory set d
5. Fig 7 4 Set node ID of the working electrode to 2 cf section Emergency operation in the Installation Manual for level electrodes NRG 16 40 17 40 19 40 5 Affix lower terminal strip Q AN Attention W Enter beginning of emergency operation in the boiler log W An installation operating in emergency mode has to be constantly supervised W Install a visible sign or signal in the control room to indicate emergency operation m Immediately replace faulty level electrode W Enter end of emergency operation in the boiler log Annex A The terminal strip of the NRS 1 40 is live during operation This presents the danger of electric shock Cut off power supply before fixing or removing the equipment Factory set default node IDs Switching Level electrode controller NRS 1 40 ID 001 NRG 16 40 ID 002 NRG 16 40 ID 003 NRS 1 41 ID 006 NRG 16 41 ID 007 NRS 1 42 ID 020 p NRG 16 42 ID 021 NRS 2 40 ID 039 NRG 26 40 ID 041 NRR 2 40 ID 040 LRR 1 40 ID 050 LRG 16 40 ID 051 The individual node IDs must be manually adjusted on the equipment Please observe the installation instructions of the device in question 24 Annex continued Assigning changing node ID If several systems of the same kind are to communicate in one CAN bus network be sure to assign one node ID for each individual system component e g controller Detach terminal strips in order to change the code switch
6. safety functions with a malfunction in the controller resulting in immediate boiler shut down When the CAN bus line and consequently the data transmitting cycle are interrupted the controller sends a visual signal to indicate a faulty condition and the relays are instantaneously de energized fail safe position The controller also facilitates user friendly performance tests and detection evaluation of malfunctions To guarantee the correct and safe functioning of the low level limiter a min electrical conductivity of 0 5 uS cm at 25 C is required The relay de energizing delay is normally set to 3 seconds at the factory but delays of 15 to 25 seconds are available on request Apart from the burner protection circuit there is also a separate Photo MOS make contact output for remote indication The automatic self testing routine of the switching controllers checks every 3 sec their safety functions The corresponding functions of the level electrodes will be tested by the electrode s self checking routine every 10 sec The malfunction information is updated with every self test If no faults have ocurred the malfunction information will be deleted automatically If faults persist the malfunction information remains stored As part of the automatic self testing routine of the switching controller the switching off of the output relays every 6 hrs is checked too If a fault is detected the information on this malfunction will be sa
7. Note Make sure that all system components connected are not operating before removing the CAN bus line from the terminal strip Note W Connect screen only to terminal 3 ensuring electrical continuity and connect equipment once to the central earthing point CEP W The loop resistance must be under 10 Q W The rated voltage is stated on the name plate B When switching off inductive loads voltage spikes are produced that may impair the operation of control and measuring systems Inductive loads should therefore be provided with commercial arc suppressor RC combinations e g 0 1 uF 100 Q W Despite correct wiring H F interference caused by the installation may lead to system breakdowns and malfunction messages If necessary refer to the Fault finding list for troubleshooting on page 23 W In the event of a shut down due to a malfunction the signal output terminals 7 and 8 is cyclically opened and closed in order to ensure an optical distinction between Low level alarm signal output closed and Malfunction shut down If necessary connect terminals 7 and 8 externally to an indicator lamp Fig 1 Wi ri n g continued Tools Wi Screwdriver for slotted screws size 2 5 completely insulated according to VDE 0680 Basic Adjustments CAN Bus All level and conductivity controllers and associated electrodes are interconnected by means of a CAN bus using the CANopen protocol Every item of equipment features an e
8. alfunction information will be deleted automatically If faults persist the malfunction information remains stored As part of the automatic self testing routine of the switching controller the switching off of the output relays every 6 hrs is checked too If a fault is detected the signal output terminals 7 and 8 will be opened and closed as a function of time A Danger The terminal strip of the NRS 1 40 is live during operation This presents the danger of electric shock Cut off power supply before fixing or removing the equipment 14 System Malfu nctions continued Systematic Malfunction Analysis The sources of malfunctions occurring in CAN bus systems operating with several bus based stations must be analysed systematically since faulty components or incorrect settings can give rise to negative interactions with intact bus devices in the CAN bus system These unwanted interactions can cause error messages in fully functional bus devices which will make fault detection even more difficult We recommend the following systematic fault finding procedure Step 1 Start Detach terminal strips in all sensing units of bus devices Level electrode Conductivity electrode Pressure sensor Temperature sensor Check Use fault finding list to correct fault s Final test have all faults been eliminated Step 2 Plug in terminal strip of the sensing unit of one system e g NRS
9. de The equipment detects the min water level low level limiter and complies with the German regulations for use in steam and hot water plants operating without constant supervision according to TRD 401 TRD 602 and TRD 604 When used with two level electrodes type NRG 16 40 17 40 or 19 40 the controller NRS 1 40 constitutes a high integrity low water level limiter system with periodic self checking The controller features the following function W Low water level alarm with two level electrodes This equipment combination detects the min water level low level limiting system and complies with the German regulations for use in steam and hot water plants operating without constant supervision according to TRD 604 sheet 1 and 2 24 72 hours operation without constant supervision This item of electrical equipment complies with the Technical Regulations on Protection Circuits to DIN VDE 0116 prEN 50156 The level data are transferred from the electrode NRG 1 40 to the controller via CAN bus using the CANopen protocol Only one low level limiting system may be used per CAN based network Function At regular intervals the level electrode NRG 1 40 sends a data telegram to the controller NRS 1 40 The data transfer is effected by means of a CAN bus according to ISO 11898 The transferred measuring data are constantly evaluated by the controller A periodic self checking routine tests every 3 seconds the integrity of the system and its
10. ed for other components Remedy Check load of power supply unit Be sure to use the PSU only for the voltage supply of bus based network components Cut off power supply and restart the system after 5 sec Fault Power supply unit defective Remedy Replace power supply unit Operation Malfunctions A Danger The terminal strip of the NRS 1 40 is live during operation This presents the danger of electric shock Cut off power supply before fixing or removing the equipment Fault finding list for troubleshooting Equipment does not work Malfunction message Fault In spite of correct wiring and commissioning of the equipment an interference signal is indicated Remedy The interference signal is caused by H F interferences coming from the installation For interference suppression of the voltage supply we supply ferrite rings stock code 147253 The 230 V supply lines should be looped through the ferrite ring five to ten times If several controllers are used in the system they can be fed from the interference suppressed supply lines For the interference suppression of the bus line we supply hinged shell ferrite rings stock code 147254 The hinged shell ferrite rings are clamped onto the bus line close to the terminal strip of the controller Restart the system after installation Water level below switchpoint LOW LEVEL no function Fault LED Power does not light up Remedy Apply power Connect the equipment prop
11. efault node IDs oooccoocccinoccccnoncnononcncnnncnonnnononnnn cnn nono n rra emen 24 26 Assigning changing node ID iii 25 Declaration of conformity sise 27 Wiring Diagram Protection circuit N LL uninterrupted v y p Further safety equipment Note 16 17 18 19 20 21 22 23 24 25 26 27 2 The NRS 1 40 is 30 the first equipment LNN Lo LA LA L2 of the safety chain All relay contacts are internally linked S Photo Mos output 24 V 230 V AC DC 100 mA Instantaneous LW alarm Il N clocked malfunction signal Jl Twisted pair cable CAN Bus Twisted pair cable 24V DC Terminating resistor Fig 1 120 Q Switching Control terminal controller Controller Level electrode Level sensor URB 1 NRS 1 40 e NRG 16 40 NRG c s c e s gt c s c Jb a IO IO IO Li TI l Voltage supply CAN data line Terminating resistor Terminating resistor 120 Q 120 Q Part Drawings Fig 4 Key Indicator LED Alarm LED 1 Electrode 1 Low level alarm LED 2 Electrode 2 Low level alarm LED Bus status LED Power Enter Test mode Decrease Increase Program key 6 0600000 Two pole code switch O Ten pole code switch O Terminal strip Screws for terminal strip Malfunction M
12. erference signal is indicated The interference signal is caused by H F interferences coming from the installation For interference suppression of the voltage supply we supply ferrite rings stock code 147253 The 230 V supply lines should be looped through the ferrite ring five to ten times If several controllers are used in the system they can be fed from the interference suppressed supply lines For the interference suppression of the bus line we supply hinged shell ferrite rings stock code 147254 The hinged shell ferrite rings are clamped onto the bus line close to the terminal strip of the controller Restart the system after installation 19 System Malfunctions continued System Malfunction 4 LED 4 flashes slowly LED 4 flashes slowly A malfunction in the level switch has been detected NRS 1 40 a E wooog Fault The electronic circuit board of the level switch is defective e g output relay Remedy Replace level switch Restart system Fault No voltage across terminal 25 self checking routine unsuccessful Remedy Wire NRS 1 40 as first device in the safety chain Wire NRS 1 40 according to wiring diagram ensure constant voltage supply across terminal 25 Restart system Fault Voltage across terminal 26 and or 30 Remedy Do not connect these terminals System Malfunction 5 LEDs 1 to 4 flash rapidly LEDs flash rapidly A general communicatio
13. erly referring to wiring diagram on page 3 Water level not yet below switchpoint LOW LEVEL Low level alarm is raised Fault Low level alarm is given despite the electrode being submerged Remedy The conductivity of the fluid to be monitored is lt 0 5 uS cm Fault The electrode body does not have earth connection to the vessel Remedy Clean seating surfaces and insert metal joint ring of stainless steel 1 4301 D 27 x 32 to DIN 7603 Do not insulate the level electrode with hemp or PTFE tape Fault The vent hole in the protection tube does not exist is obstructed or flooded Remedy Check protection tube and if necessary provide vent hole Fault The isolating valves of the external measuring pot optional item are closed Remedy Open isolating valves If faults occur that are not listed above or cannot be corrected please contact our service centre or authorized agency in your country 23 Emergency Operation Emergency operation of water level limiting system If one level electrode fails to operate the installation can continue to operate in emergency mode under constant supervision according to TRD 401 with one level electrode 1 Undo screws and remove the lower terminal strip Q Fig 4 2 Set code selector switches Q S1 and S2 to orr Fig 6 Fig 8 3 Set code selector switches O S1 to on and S2 S7 to orr The switching controller NRS 1 40 has now the node ID 1
14. function 4 NRS 1 40 a O electrode 1 has been detected 18 Fault Remedy Fault Remedy Fault Remedy Fault Remedy The data transfer between level switch and electrode is interrupted Make sure that the bus lines are wired in accordance with the wiring diagram observe polarity All end of line devices must be provided with a terminating resistor of 120 Q see wiring diagram Cut off power supply and re start the system after 5 sec The baud rate of one or more bus devices is not set correctly Check baud rate settings of all bus devices The baud rate settings must be identical Please refer to section Annex Cut off power supply and re start the system after 5 sec The overall length of the bus line does not correspond to the baud rate setting Change baud rate settings of all bus based equipment as described under Annex Cut off power supply and re start the system after 5 sec In spite of correct wiring and commissioning of the equipment an interference signal is indicated The interference signal is caused by H F interferences coming from the installation For interference suppression of the voltage supply we supply ferrite rings stock code 147253 The 230 V supply lines should be looped through the ferrite ring five to ten times If several controllers are used in the system they can be fed from the interference suppressed supply lines For the interference suppression of
15. lectronic address Node ID The four core bus cable serves as power supply and data highway for high speed data exchange The CAN address node ID can be set between 1 and 123 The NRS 1 40 is configured at our works and ready for service with other GESTRA system components without having to set the node ID If several systems of the same kind are to communicate in one CAN bus network be sure to assign one node ID for each individual system component e g controller Refer to pages 24 and 25 for more details Node ID NRS 1 40 NRG 16 40 1 NRG 16 40 2 Reserved Reserved X X 1 X 2 X 3 X 4 1 2 3 Factory setting Reserved area Note E The node ID 3 for the second level electrode NRG 16 40 must be adjusted on site since the equipment features the factory set default value 2 when delivered Factory setting The switching controller features the following factory set default values E Baud rate 250 kb s E Relay de energizing delay 3 s W Sensitivity 0 5 uS cm m Node ID 001 E Configuration Operation with two level electrodes NRG 1 40 11 Commissioning NRS 1 40 Apply power to the unit Indicator LEDs flash rapidly The four indicator LEDs flash rapidly jd NREREN The LED Power lights up The test cycle takes about 3 sec 4 DODGE x C Test LED Power illuminated Note E To analyse and eliminate malfunctions that may occ
16. n malfunction has been detected 4 NRS 1 40 jm DODO Fault No communication between bus devices possible Remedy Check wiring node ID baud rate setting and bus cable Cut off power supply and re start system after 5 sec 20 System Malfunctions continued System Malfunction 6 LED Bus status flashes slowly 3 NRS 1 40 Fault Remedy Fault Remedy Fault Remedy DODDE LED flashes slowly Data transfer in CAN bus interrupted The bus cables have to be connected correctly according to the wiring diagram observe polarity Make sure that all end of line nodes are provided with 120 Q terminating resistors Cut off power supply and re start system after 5 sec The baud rate of one or more nodes is not set correctly Check baud rate settings of all bus nodes The baud rates must be identical Refer to section Annex for more details Cut off power supply and re start system after 5 sec The overall length of the bus cable does not correspond to the selected baud rate Change baud rate settings of all nodes according to page Annex Cut off power supply and re start system after 5 sec 21 System Malfunctions continue System Malfunction 7 LED Power flashes slowly 22 NRS 1 40 c DODGE test LED flashes slowly Fault The power supply unit PSU is overloaded The power supply unit may be misus
17. ns are completely eliminated DOOGQE Crest 16 System Malfunctions continued System Malfunction 2 LED 2 flashes slowly LED 2 flashes slowly A system malfunction in level electrode 2 was detected NRS 1 40 DODGE Hold down button g i LED 1 and 2 flashes slowly LED 1 and 2 flashes slowly 4 NRS 1 40 DODGE n m O Fault The max admissible temperature in the terminal box of the electrode has been exceeded Remedy Insulate electrode flange against thermal radiation Hold down button Y LED 2 flashes slowly LED 2 flashes slowly NRS 1 40 ODO n E Fault The electronic circuit board of the level electrode is defective Remedy Replace the electronic circuit board of the level electrode 2 Press button B twice for a few seconds NRS 1 40 to acknowledge the malfunction Cest a The system will continue to work once the causes of the system malfunctions are completely eliminated 17 System Malfunctions continued System Malfunction 3 LED 3 flashes slowly LED 3 flashes slowly A communication malfunction in the bus line has been detected Hold down button LED 1 flashes rapidly LED 1 flashes rapidly between level switch and level A bus communication mal
18. rve S p A Divisione Italgestra Via Prealpi 30 20032 Cormano MI Tel 0039 02 66 32 51 Fax 0039 02 66 32 55 60 E mail infoitaly Oflowserve com Portugal Flowserve Portuguesa Lda Av Dr Antunes Guimar es 1159 Porto 4100 082 Tel 00351 22 6 198770 Fax 0035122 6107575 E mail gestra O gestra pt A GESTRA GmbH Postfach 10 54 60 D 28054 Bremen M nchener Str 77 D 28215 Bremen Telefon 49 0 421 35 03 0 Telefax 49 0 421 35 03 393 E Mail gestra gmbh Q flowserve com Internet www gestra de A Unit of Flowserve Corporation 810635 03 304cm 2001 GESTRA GmbH Bremen Printed in Germany
19. s no longer valid if modifications are made to the equipment without consultation with us Bremen 27th March 2002 GESTRA GmbH Head of the Electronics Design Dept Quality Assurance Manager Stefan Bode Lars Bohl Academically qualified engineer Academically qualified engineer 27 Key Q Terminal strips 9 Supporting rail 35x15 to DIN EN 50022 28 Example of Installation 100 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 LON Ny Q MAX 95 IP 20 D o 2 o tc z a 5 6 7 8 9 10 11 12 13 14 15 Fig 12 29 30 31 GESTRA Gesellschaften GESTRA Companies Soci t s GESTRA Sociedades Gestra Societ GESTRA Vertretungen weltweit Agencies all over the world Repr sentations dans le monde entier Representaciones en todo el mundo Agenzie in tutto il mondo Great Britain Flowserve Flow Control UK Ltd Burrel Road Haywards Heath West Sussex RH 16 1TL Tel 00 44 14 44 31 44 00 Fax 00 44 14 44 31 45 57 E mail sales Oflowserve com France Flowserve Flow Control S A S 10 Avenue du Centaure BP 8263 F 95801 CERGY PONTOISE CEDEX T l 00 33 1 34 43 26 60 Fax 00 33 1 34 43 26 87 E mail contact gestra fr Espana GESTRA ESPANOLA S A Luis Cabrera 86 88 E 28002 Madrid Tel 003491 5 152032 Fax 0034 91 4 136 747 5 152036 E mail gestra O gestra es Italia Flowse
20. settings and O AN Attention E Do not assign the same node ID twice within the CAN bus network NRS 1 40 25 An NEX continued Fa O Pig Electrode A Electrode i l Fig 6 Fig 8 VEN ON1234567890 E Nede ID RE ST ON 1 S4 OFF 8 EMEN o ON 1 2 3 4 5 6 7 8 9 0 E Node ID S8 ON 4 S4 ON 8 Fig 7 Factory setting Fig 9 Example S8 S9 SO Baudrate Cable length OFF ON OFF 250 kBit s ON ON OFF 125 kBit s OFF OFF ON 100kBi s 335m ON OFF ON 5OkBi s 500m OFF ON ON 20kBi s 1000m ON ON ON 50kBi s 1000m Fig 10 Factory setting 250 kBits s 26 An NEX continued Declaration of conformity CE We hereby declare that the equipment NRS 1 40 conforms to the following European guidelines B LV guideline 73 23 eec version 93 68 eec B EMC guideline 89 336 eec version 93 68 eec E Pressure Equipment Directive PED 97 23 eec of 29th May 1997 The equipment is a safety accessory as defined in section 1 paragraph 2 1 3 Conformity assessment procedure applied according to Annex IIl Module B and D which are based on the following harmonised standards E LV standard DIN EN 50178 B EMC standard DIN EN 50 081 2 DIN EN 61 000 6 2 Other technical rules and regulations applied VdT V Bulletin Water Level 100 4 1990 and draft 8 2001 This declaration i
21. the bus line we supply hinged shell ferrite rings stock code 147254 The hinged shell ferrite rings are clamped onto the bus line close to the terminal strip of the controller Restart the system after installation System Malfunctions continued System Malfunction 3 continued Hold down button LED 2 flashes rapidly LED 2 flashes rapidly A bus communication malfunction between level switch and level electrode 2 has been detected Fault Remedy Fault Remedy Fault Remedy Fault Remedy i W NRS 1 40 The data transfer between level switch and electrode is interrupted Make sure that the bus lines are wired in accordance with the wiring diagram observe polarity All end of line devices must be provided with a terminating resistor of 120 Q see wiring diagram Cut off power supply and re start the system after 5 sec The baud rate of one or more bus devices is not set correctly Check baud rate settings of all bus devices The baud rate settings must be identical Please refer to section Annex Cut off power supply and re start the system after 5 sec The overall length of the bus line does not correspond to the baud rate setting Change baud rate settings of all bus based equipment as described under Annex Cut off power supply and re start the system after 5 sec In spite of correct wiring and commissioning of the equipment an int
22. ultifunction Multifunction Important Notes Usage for the intended purpose Use switching controller NRS 1 40 only in conjunction with GESTRA level electrode NRG 16 40 NRG 17 40 or NRG 19 40 for signalling low water level min alarm Safety Note Installation must only be performed by qualified staff Qualified staff are those persons who through adequate training in electrical engineering the use and application of safety equipment in accordance with regulations concerning electrical safety systems and first aid amp accident prevention have achieved a recognised level of competence appropriate to the installation and commissioning of this safety device A Danger The terminal strip of the NRS 1 40 is live during operation This presents the danger of electric shock Cut off power supply before fixing or removing the housing cover Explanatory Notes Scope of Supply NRS 1 40 1 Switching controller NRS 1 40 plug in unit in plastic case with terminals 1 Terminating resistor 120 Q 1 Installation and service manual Description The controller type NRS 1 40 is a self monitoring low water level limiter with periodic self checking and monitoring feature of the output relay contacts to be used in conjunction with one level electrode type NRG 16 40 17 40 or 19 40 The controller has the following function Explanatory Notes continue Description continued W Low water level alarm with one level electro
23. ur during the com missioning procedure refer to section System Malfunctions on page 14 Operation NRS 1 40 Normal operation electrode s submerged Indicator LEDs extinguished The four indicator LEDs are not illuminated NETT The LED Power lights up jm ooo test LED Power illuminated Test Cycle NRS 1 40 Press button briefly The test mode is activated for about 10 sec Be sure to press button amp or within these 10 sec Note The safety circuit will be interrupted during the test cycle NRS 1 40 00006 test 12 Test Cycle continued NRS 1 40 Press button o for 3 sec Indicator LED 1 changes after 3 sec from rapid flashing to lighting LED 1 flashes rapidly and remains permanently illuminated after 3 sec NRS 1 40 A low level alarm is simulated for a DORE electrode 1 z pde 3 sec i Indicator LED 2 changes after 3 sec from rapid Press button Y briefly l Estee LED 2 flashes rapidly and remains NEST permanently illuminated after 3 s E A low level alarm is simulated for ODE electrode 2 gt This test cycle is performed for the water level limiting system two level electrodes Alarm There are four different alarm conditions B Low level alarm for water level limiter one level electrode
24. ved accordingly Explanatory Notes continuea Technical Data Type approval no TUV WB 99 403 EG BAF MUC 0202 103881 002 Input Interface for CAN bus to DIN ISO 11898 CANopen protocol Output voltage supply for electrodes 18 36 V short circuit protected Output for protection circuit Two volt free relay contacts locally connected in series Max contact rating for switching voltages 24 V AC DC 115 V AC and 230 V AC 4 A resistive inductive Contact material silver hard gold plated Interference suppression Provide contactor with external RC combination 100 Q 47 nF Signal output Photo MOS output instantaneous with low level timed malfunction signal max contact rating for switching voltages 24 V AC 115 V AC and 230 V AC DC 100 mA resistive Relay de energizing delay Output Low level alarm set to 3 sec standard optional for e g marine applications 15 sec or 25 sec internally linked for relay contact test Indicators and adjustors 4 pushbuttons Parameterisation TEST 1 red LED Low level alarm electrode 1 1 red LED Low level alarm electrode 2 2 red LEDs Multifunction 1 red LED Bus status 1 green LED Power 1 ten pole code switch 7 poles for setting node ID 3 poles for setting baud rate 1 two pole code switch for limiter limiting system Internal self checking routine Every 3 seconds Periodic testing of output relay contacts Every 6 hours Supply
25. voltage 230 V 10 50 60 Hz 115 V 10 50 60 Hz optional Power consumption 10 VA Sensitivity gt 0 5 uS cm at 25 C Protection Enclosure IP 40 to DIN EN 60529 Terminal strip IP 20 to DIN EN 60529 Admissible ambient temperature 0 C to 55 C Enclosure material Front panel polycarbonate grey Enclosure polycarbonate black Weight Approx 0 8 kg Installation NRS 1 40 Installation on mounting rail 1 Clip switching controller onto mounting rail 35 x 15 mm DIN EN 50022 2 Align switching controller see Fig 11 Fig 12 Note W f an external measuring pot is used each level electrode type NRG 16 40 requires one switching controller NRS 1 40 and one GESTRA monitoring unit SRL 6 Tool B Screwdriver 5 5 100 Wiring Note that screened multi core twisted pair control cable is required e g UNITRONIC BUS CAN 2 x 2 x or RE 2YCYV fl 2 x 2 x 2 The baud rate data transfer rate dictates the cable length between the bus nodes and the total power consumption of the sensors dictates the conductor size Number of pairs S8 S9 S10 Baud rate Cable length and conductor size mm OFF ON OFF 250 kBit s 125 m 2x2x0 34 Factory setting ON ON OFF 125 kBit s 250 m 2x2x0 5 OFF OFF ON 100 kBit s 335 m 2x2x0 75 ON OFF ON 50 kBit s 500 m on request dependent on OFF ON ON 20 kBit s 1000 m bus configuration ON ON ON 10 kBit s 1000 m
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