GESTRA NRS 1-40 Original Installation Manual Download Page 5

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Important Notes

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 mounting or removing the terminal strips and the housing

cover.

Usage for the intended purpose

Use switching controller NRS 140 only in conjunction with GESTRA level electrodes NRG 1640,

NRG 1740, NRG 1940 or NRG 11140 for signalling lowwater level (min. alarm).

Safety note

The equipment must only be installed and commissioned by qualified and adequately trained

personnel.
Maintenance and retrofitting must only be performed by entrusted personnel who – through adequate

training – have achieved a recognised level of competence.

ATEX (Atmosphère Explosible)

According to the European Directive ATEX 2014/34/EU the equipment must not be used in potentially

explosive atmospheres.

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

commissioned nor operated.

Note on the Declaration of Conformity / Declaration by the Manufacturer

For details on the conformity of our equipment according to the European Directives see our

Declaration of Conformity or our Declaration of Manufacturer.

The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under

www.gestra.de Documents or can be requested from us.

Summary of Contents for NRS 1-40

Page 1: ...1 E N English Switching Controller NRS 1 40 Original Installation Instructions 810635 07 ...

Page 2: ...Declaration by the Manufacturer 5 Important Notes Page Explanatory Notes Scope of supply 6 Description 6 Function 6 7 System components 7 Design 7 NRS 1 40 14 Note 14 Tools 14 Example of installation 15 Key 16 Installation NRS 1 40 8 Name plate marking 9 Dimensions 10 Technical Data NRS 1 40 11 Key 13 Design NRS 1 40 12 Key 13 Functional Elements ...

Page 3: ...ging node ID 23 Attention 23 Code switch settings 24 Basic Settings NRS 1 40 26 Low level alarm for water level limiter 26 Low level alarm for water level limiting system 26 Note 26 Alarm Control cable 16 Note 17 CAN bus voltage supply 17 Attention 17 Wiring diagram 18 Attention 18 Assignment diagram for sensor connector union 19 Key 19 CAN bus wiring diagram 20 Attention 20 Note 21 Tools 21 ...

Page 4: ...33 34 Error message 4 35 Error message 5 35 Error message 6 36 Error message 7 36 System Malfunctions Danger 37 Disposal 37 Decommissioning Contents continued Page Danger 27 Emergency operation of water level limiting system 27 Attention 27 Emergency Operation Danger 28 Fault finding list for troubleshooting 28 Malfunctions ...

Page 5: ...d personnel who through adequate training have achieved a recognised level of competence ATEX Atmosphère Explosible According to the European Directive ATEX 2014 34 EU the equipment must not be used in potentially explosive atmospheres 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 6: ...hours operation without constant supervision This item of electrical equipment complies with the Technical Regulations on Protection Circuits to DIN EN 50156 1 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 Explanatory Notes Function At regular intervals the lev...

Page 7: ...2 External dimensions 73 x 100 x 118 Function continued The automatic self testing routine checks the switching controller every 3 seconds and the sensors e g the level electrodes every 10 seconds During each self testing routine the error messages will be stored in the switching controller The error messages remain stored until the cause of the fault s is eliminated If a malfunction is detected t...

Page 8: ...tive Relay de energizing delay Output Low level alarm set to 3 sec standard 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 se...

Page 9: ...V 15 10 10VA Betriebsanleitung beachten See installation instructions Voir instructions de montage Node ID ___ ___ ___ 8 7 L N N1 Sicherheitsstromkreis protection circuit circuit de securite N L Alarm extern 24 230 V 100 mA MIN X S 250 V T 2 5 A 3sec GESTRA AG Münchener Str 77 D 28215 Bremen Alarm TÜV SWB SHWS xx 403 NRS 1 40 Funktionale Sicherheit Functional safety Sécurité fonctionnelle IEC 6150...

Page 10: ...10 Technical Data continued Dimensions Fig 2 1 1 8 100 73 ...

Page 11: ...11 Design NRS 1 40 Fig 3 0 0 ...

Page 12: ...12 Functional Elements NRS 1 40 Fig 5 8 9 Fig 4 1 7 6 5 4 3 2 ...

Page 13: ...trode 2 Low level alarm Malfunction message LED 3 No function Malfunction message LED 4 No function Malfunction message 2 LED Bus status 3 LED Power 4 Enter Test mode 5 Decrease 6 Increase 7 Program key 8 Two pole code switch 9 Ten pole code switch 0 Terminal strip Screws for terminal strip Enclosure Supporting rail TS 35 x 15 to DIN EN 50022 ...

Page 14: ...g rail 1 Clip switching controller onto mounting rail 35 x 15 mm DIN EN 50022 2 Align switching controller see Fig 7 Note n If an external measuring pot is used each level electrode type NRG 1 40 requires one switching controller NRS 1 40 and one GESTRA monitoring unit SRL 6 40 ...

Page 15: ...15 Installation continued Example of installation Fig 6 0 0 Fig 7 20 20 ...

Page 16: ...t be protected by a UV resistant plastic jacket or a cable duct The baud rate data transfer rate dictates the cable length and conductor size of the cable between the bus nodes The total power consumption must also be taken into account when selecting the con ductor size The total power consumption is calculated from the number of bus nodes If the cable length between the steam boiler and the cont...

Page 17: ... Please enter data Sum 1 W Measuring transducers transmitters control units operating display unit URB 1 Qty x Power rating per equipment Sum x 3 W W Operating display unit URB 2 x 5 W W Please enter data Sum 2 W If sum 2 exceeds sum 1 the CAN bus voltage must be supplied by a separate stabilised safety power supply unit e g SITOP smart 24 V 2 5 A with 24 V DC The power supply unit must be electri...

Page 18: ...17 18 19 20 21 22 23 24 9 25 10 26 11 12 28 13 29 14 30 15 1 2 3 4 Test P 1 2 3 E 4 GESTRA NRS 1 40 N L S CL CH 18V 36V DC CAN Bus 120 Ω L N MIN N L Attention n NRS 1 40 is the first device in the safety circuit n Do not connect the terminals 10 to 12 19 to 24 and 26 27 28 and 30 ...

Page 19: ...C DC Further devices in the safety circuit Photo MOS output 24 V 230 V AC DC 100 mA With low level alarm instantaneous with malfunction signal pulse triggered Terminating resistor 120 Ω RES 1 or RES 2 CAN bus line twisted pairs control cable Pin 1 Screen a Pin 2 Voltage supply 24 V DC red b Pin 3 Voltage supply 24 V DC black c Pin 4 CAN data line CH white d Pin 5 CAN data line CL blue Key ...

Page 20: ...onnected to a CAN bus network provide the first and last equipment with a terminating resistor of 120 Ω Fig 10 Fig 11 n Use only one water level limiting system per CAN bus network n The CAN bus line must not be interrupted while operating with one or more system components In the event of an interruption the safety circuit will be opened If the switching controller has to be replaced first remove...

Page 21: ...lock pulse controlled way in order to ensure an optical differentiation between Low water level signal output permanently closed and Shut off due to a malfunction If required you can wire terminals 7 and 8 with an external signal lamp Fig 8 CAN bus All level and conductivity controllers and associated electrodes are interconnected by means of a CAN bus adopting the CANopen protocol Every item of e...

Page 22: ...V 5 40 1 TRV 5 40 2 Limiter 3 Limiter 4 X X 1 X 2 X 3 X 4 6 7 8 9 10 Factory setting TRS 5 40 1 TRS 5 40 2 X 1 90 X 2 90 98 98 High level alarm NRS 1 41 NRG 16 41 Reserved Reserved Reserved X X 1 X 2 X 3 X 4 6 7 8 9 10 Factory setting Further components SRL 40 X Sensor low level limiter high level alarm 2 Factory setting ORT 6 98 Factory setting On off level control Reserved NRS 1 42 NRG 16 42 X 1...

Page 23: ...allation manual of the level electrode 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 In most cases it is sufficient to commission the equipment with the default factory setting Detach the lower terminal strip 0 in order to change the code switch settings 8 an...

Page 24: ...N NRG S1 OFF 1 S2 OFF Node ID 1 S1 ON 1 S2 OFF 2 S3 OFF 4 S4 OFF 8 S5 OFF 16 S6 OFF 32 S7 OFF 64 Node ID 12 S1 OFF 1 S2 OFF 2 S3 ON 4 S4 ON 8 S5 OFF 16 S6 OFF 32 S7 OFF 64 S8 S9 S0 Baud rate Cable length OFF ON OFF 250 kBit s 125 m ON ON OFF 125 kBit s 250 m OFF ON ON 100 kBit s 335 m ON ON ON 50 kBit s 500 m OFF ON ON 20 kBit s 1000 m ON ON ON 10 kBit s 1000 m ...

Page 25: ...lfunctions that may occur during the com missioning procedure refer to section Malfunctions and System Malfunctions Commissioning Operation NRS 1 40 Press button briefly 1sec The test mode is activated for about 10 sec Be sure to press button or within these 10 sec Note The safety circuit will be interrupted during the test cycle Press button for 3 sec LED 1 flashes rapidly and remains permanently...

Page 26: ...ly LED 1 remains permanently illuminated after the de ener gizing delay De energizing delay 3 sec default 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 De energizing delay 3 sec default Alarm Note n In the event of an alarm the equipment does not lock automatically If a lock function is required an...

Page 27: ...peration in the Operating Instructions for the NRG 16 40 17 10 19 40 111 40 5 Re attach lower terminal strip 0 n Enter beginning of emergency operation in the boiler log n An installation operating in emergency mode has to be constantly supervised n Put up a sign indicating the emergency operation of the switchgear unit n Immediately replace faulty level electrode n Enter end of emergency operatio...

Page 28: ...rfaces 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 Low level alarm is given despite the electrode being submerged Remedy The conductivity of the fluid to be monitored is 0 5 µS cm Increase the conductivity of the fluid Fault The isolating valves of the external measuring pot optional item are closed Re...

Page 29: ... built in switching controller NRS 1 40 The automatic self testing routine checks the switching controller every 3 seconds and the sensors e g the level electrodes every 10 seconds During each self testing routine the error messages will be stored in the switching controller The error messages remain stored until the cause of the fault s is eliminated If a malfunction is detected the signal output...

Page 30: ... all sensing units of bus devices Level electrode Conductivity electrode Pressure sensor Temperature sensor etc Step 3 Apply mains voltage to bus devices of the system e g NRS and NRG Step 2 Plug in terminal strip of the sensing unit of one system e g NRS and NRG sensor System O K Detach terminal strips between bus devices of the system e g NRS and NRG System Malfunction Use fault finding list to ...

Page 31: ...nd 2 are flashing slowly Hold down button LED 2 is flashing slowly Fault The max admissible temperature in the terminal box of the electrode has been exceeded Remedy Insulate electrode flange against heat radiation Fault The electronic circuit board of the level electrode is defective Remedy Replace electronic circuit board of the level electrode 1 A B ...

Page 32: ...2 are flashing slowly Hold down button LED 2 is flashing slowly Fault The max admissible temperature in the terminal box of the electrode has been exceeded Remedy Insulate electrode flange against thermal radiation Fault The electronic circuit board of the level electrode is defective Remedy Replace the electronic circuit board of the level electrode 2 A B ...

Page 33: ...s devices is not set correctly Remedy Check baud rate settings of all bus devices The baud rate settings must be identical Cut off power supply and re start the system after 5 sec Fault The overall length of the bus line does not correspond to the baud rate setting Remedy Change baud rate settings of all bus based equipment Cut off power supply and re start the system after 5 sec Fault In spite of...

Page 34: ...ngs of all bus devices The baud rate settings must be identical Cut off power supply and re start the system after 5 sec Fault The overall length of the bus line does not correspond to the baud rate setting Remedy Change baud rate settings of all bus based equipment Cut off power supply and re start the system after 5 sec Fault In spite of correct wiring and commissioning of the equipment an inter...

Page 35: ... 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 Fehler The electronic circuit board of the level switch is defective Abhilfe Replace level switch Restart system Fault Temperature in control cabinet too high 60 C Remedy Make sure ...

Page 36: ...s not correspond to the selected baud rate Remedy Change baud rate settings of all nodes accordingly Cut off power supply and re start system after 5 sec Fault The electronic circuit board of the equipment is defective Remedy Replace the equipment Restart the system Error message 6 1 2 3 4 Test P 1 2 3 E 4 GESTRA NRS1 40 Error message 7 Fault The power supply unit PSU is overloaded The power suppl...

Page 37: ... supply before mounting or removing the terminal strip and the housing cover Disposal Remove the equipment and separate the waste materials in accordance with the material specification Electronic components boards must be disposed of separately For the disposal of the equipment observe the pertinent legal regulations concerning waste disposal ...

Page 38: ...38 For your notes ...

Page 39: ...39 For your notes ...

Page 40: ...08500 08 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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