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GESTRA

NRS 1-40

GESTRA

NRS 1-40.2

Electrical Connection

– continued –

Fig. 6

Wiring diagram for control unit NRS 1-40.2

Wire link with same potential

Control circuit / supply

Terminating resistor

120 Ω

Photo-MOS output

24 V – 230 V AC/DC, 100 mA
Instantaneous alarm signal

Timed malfunction signal

Further equipment in

the control circuit

Attention:

NRS 1-40.2 is the first

device in the control

circuit.

Do not connect terminals

26, 27, 28, 30.

Control circuit – uninterrupted – ≥ 18 V

24 V DC

Twisted pair cables

CAN-Bus

Twisted pair cables

L N

N L

MIN

N L

S

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Содержание NRS 1-40.1

Страница 1: ...1 E N English Control Unit NRS 1 40 1 NRS 1 40 2 Original Installation Instructions 818548 02 ...

Страница 2: ...s cable cable length and size 14 Change baud rate 14 Wire terminal strip 14 Note 14 CAN Bus voltage supply 15 Wiring diagram for control unit NRS 1 40 1 16 Wiring diagram for control unit NRS 1 40 2 17 Wiring diagram for CAN bus system example 18 Attention 18 Note 19 Tools 19 NRS 1 40 1 NRS 1 40 2 9 10 Name plate Marking 10 Dimensions NRS 1 40 1 NRS 1 40 2 11 Technical Data NRS 1 40 1 NRS 1 40 2 1...

Страница 3: ...ng list for troubleshooting system malfunctions Control unit 27 Action against high frequency interference 27 Replace control unit 28 System Malfunctions Fault finding list for level electrode NRG 1 40 control unit NRS 1 40 1 29 Fault finding list for level electrode NRG 1 41 1 control unit NRS 1 40 1 30 Fault finding list for level electrode NRG 1 41 control unit NRS 1 40 2 30 Fault finding list ...

Страница 4: ...rature transmitter type TRV 5 40 A combination of these functions is possible Safety note The equipment must only be installed and commissioned by qualified and competent staff Retrofitting and maintenance work must only be performed by qualified staff who through adequate training have achieved a recognised level of competence Classification pursuant to article 1 of the Pressure Equipment Directi...

Страница 5: ...12953 The level electrodes type NRG 1x 40 NRG 1x 41 1 and the temperature transmitter type TRV 5 40 detect the current water level and temperature and their readings are sent as a data telegram to the CAN bus The CANopen protocol is used for the data transfer via CAN bus Only one limiting system with one control unit NRS 1 40 1 or 1 40 2 may be used per CAN bus net work The application of the cont...

Страница 6: ...vel electrode NRG 1x 40 Low level limiter LW alarm 2 Level electrode NRG 1x 40 High level limiter HW alarm Level electrode NRG 1x 41 1 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Low level limiter LW alarm 1 Level electrode NRG 1x 40 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Low le...

Страница 7: ...rature monitor limiter Temperature transmitter TRV 5 40 High level limiter HW alarm Level electrode NRG 1x 41 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Safety temperature monitor limiter Temperature transmitter TRV 5 40 Safety temperature...

Страница 8: ...ed in the following circuit The safety circuit will be interrupted instantaneously with the following malfunction alarms n Malfunction in the level electrodes self checking negative temperature in terminal box too high n Malfunction in the temperature transmitter self checking negative temperature in casing too high n Malfunction in the control unit self checking negative n Communication malfuncti...

Страница 9: ...put for external signalling alarm signal instantaneous malfunction signal timed 24 230 V AC DC max current rating 100 mA NO contact Factory setting of de energizing delay of output relay 3 sec default setting other time delays 15 25 etc on request Indicators and adjustors 4 Pushbuttons for operation TEST 4 LEDs for alarm and malfunctions messages 1 LED Power 1 LED bus status controller malfunction...

Страница 10: ... TH 35 EN 60715 Weight Approx 0 8 kg Equipment designation Node ID Mains supply protection Pressure temperature range Disposal note CE marking Spare part specification Manufacturer Type approval no Wiring diagram Characteristics CAN bus Safety note Fuse 1 2 3 4 5 16 17 18 25 29 Steuergerät control device appareille de commande Tamb 55 C 131 F IN OUT CAN Bus 18 36 V DC IP 40 IP20 15 10 230V 10VA Be...

Страница 11: ...11 Fig 2 Technical Data continued Dimensions NRS 1 40 1 NRS 1 40 2 100 Fig 3 118 73 20 20 ...

Страница 12: ...tings Note When changing the default factory settings see page 20 the following steps n change baud rate n change configuration see section Commissioning and n change node ID see section Annex must be carried out before mounting the equipment Make sure that the terminal strips are unplugged before performing the work in a single operation The control unit NRS 1 40 1 NRS 1 40 2 is clipped onto a su...

Страница 13: ... 40 2 A B C D E F G A Upper terminal strip B Lower terminal strip C Fixing screws cross recess head screws M4 D Code switch for setting node ID and baud rate E Code switch for system configuration F Casing G Supporting rail type TH 35 EN 60715 Key The code switches are accessible after removing the lower terminal strip The terminal strips can be unplugged after undoing the right and the left fixin...

Страница 14: ...the sensor dictates the conductor size If the cable length between the steam boiler and the control cabinet exceeds 15 m we recommend that you fit a branching box that is resistant to electromagnetic interference stock code no 1501214 and to use a control cable with a larger conductor size for the distance to the control cabinet The baud rate is set via code switch D Fig 4 S 8 to S 10 Default fact...

Страница 15: ...l units operating display unit URB 1 Qty Power rating per equipment Sum x 3 W W Operating display unit URB 2 x 5 W W 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 meet the requirements of the DIN VDE 0106 safety separation and be provided with an overcurrent pr...

Страница 16: ...y Terminating resistor 120 Ω Photo MOS output 24 V 230 V AC DC 100 mA Instantaneous alarm signal Timed malfunction signal Further equipment in the safety circuit Attention NRS 1 40 1 is the first device in the safety circuit Do not connect terminals 26 27 28 30 Safety circuit uninterrupted 18 V 24 V DC Twisted pair cables CAN Bus Twisted pair cables L N N L N L S MIN ...

Страница 17: ... Terminating resistor 120 Ω Photo MOS output 24 V 230 V AC DC 100 mA Instantaneous alarm signal Timed malfunction signal Further equipment in the control circuit Attention NRS 1 40 2 is the first device in the control circuit Do not connect terminals 26 27 28 30 Control circuit uninterrupted 18 V 24 V DC Twisted pair cables CAN Bus Twisted pair cables L N N L MIN N L S ...

Страница 18: ...th different voltage potentials e g control unit 230 V safety circuit 24 V Provided that the electric potentials are equal a wire link can be attached to terminals 17 and 18 n To protect the switching contacts provide the circuit with a T 2 5 A or 1 0 A fuse TRD 604 72 hrs operation n If two or more system components are connected in a CAN bus system provide the first and the last device with a te...

Страница 19: ...g point CEP n The rated voltage is indicated on the name plate n When switching off inductive loads voltage spikes are produced that may impair the operation of control and measuring systems Connected contactors must therefore be provided with suppressors such as RC combinations n In the event of an alarm the signal output terminal 7 and 8 is instantaneously closed n In the event of a malfunction ...

Страница 20: ...onents are easier to access before the equipment is mounted you should change the configuration before carrying out the installation Danger The terminal strips of the control units NRS 1 40 1 NRS 1 40 2 are live during operation This presents the risk of severe cases of electric shock Always cut off power supply to the equipment before mounting removing or connecting the terminal strips A B Basic ...

Страница 21: ...F Water level LW 1 Water level LW 2 Temperature MAX 1 Temperature MAX 2 OFF OFF ON ON ON ON Temperature MAX 1 ON ON ON ON ON ON Temperature MAX 1 Temperature MAX 2 Code switch E Limiting function S1 S2 S3 S4 S5 S6 1 2 3 4 OFF OFF ON ON ON ON High level HW ON ON OFF OFF ON ON High level HW Temperature MAX Temperature MAX OFF OFF ON ON ON ON Temperature MAX 1 Factory setting ON ON ON ON ON ON Temper...

Страница 22: ... started and tested Output contacts are open Signalling output is closing lamp test Operation Limiters 1 4 indicate no alarm LED 1 4 are not illuminated Output contacts are closed signalling output is open Alarm Limiters 1 4 one or more limiters indicate an alarm One or more of the LEDs 1 2 3 4 are flashing rapidly De energizing initiated signalling output is closed instantaneously One or more of ...

Страница 23: ... Overloading of the 24 V power supply unit in the controller System Malfunctions Note Before carrying out the systematic fault finding procedure please check Wiring Is the wiring in accordance with the wiring diagram Is the polarity of the bus line always correct Is the bus line of each of the end nodes provided with a 120 Ω resistor Configuration of level electrode NRG 1x 40 low water level LW Ar...

Страница 24: ...ommend the following systematic fault finding procedure System Malfunctions continued Step 1 Start Detach terminal strips in all Bus sensors 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 sensor of the system e g NRS and NRG electrodes System O K Detach termin...

Страница 25: ...d hold down corresponding key key 1 2 3 or 4 LED 1 is flashing slowly Faulty communication between limiter and controller HF interference LED 2 and 3 are flashing slowly Excessively high temperature in the terminal box of the electrode or the temperature transmitter LED 3 is flashing slowly Sensor defective Analysis of system malfunctions in the controller Malfunction in control unit LED bus statu...

Страница 26: ...interferences provide contactors and actuators with RC combinations in accordance with the specifications of the manufacturer Take action against high frequency interference LEDs 2 and 3 are flashing slowly Fault The temperature in the terminal box of the level electrode or the temperature transmitter exceeds the max limit Remedy Check installation of electrode and insulate electrode flange agains...

Страница 27: ...oltage applied across terminal 25 Remedy Switch off mains voltage and switch it on again after about 5 seconds the equipment restarts The control unit must be replaced if after a maximum of 1 minute a malfunction is indicated again LED Power is flashing slowly Fault Bus supply voltage below 18 V DC The power supply unit of the controller is overloaded Remedy Mount and connect a safety power supply...

Страница 28: ...number indicated on the name plate System Malfunctions continued Check switchpoints In order to check the switchpoints Level below low water level LW or Level above high water level HW the water level must be lowered or as the case may be the boiler must be filled The switchpoint MAX temperature can also only be checked by increasing the temperature accordingly All devices must respond as if there...

Страница 29: ...ot exist or is obstructed Remedy Check installation of level electrode Make sure that the level in the protection tube corresponds to the actual water level Water level not yet below switchpoint Low water LW but a low level alarm is raised Fault The electrode rod s is are too short Remedy Replace electrode rod s and cut electrode rod s to the length dictated by the switchpoint LW Fault The earth c...

Страница 30: ...edy Clean seating surfaces and screw in the electrode together with the supplied joint ring 27x 32 DIN 7603 Do not insulate the electrode with hemp or PTFE tape Switchpoint High water HW not yet exceeded but a high level alarm is raised Fault The electrode rod is too long Remedy Cut electrode rod to the length dictated by the switchpoint HW Fault The insulation of the level electrode is faulty Rem...

Страница 31: ...de ID to 2 see Emergency Operation in the installation manual of NRG 1x 40 2 Control unit Cut off power supply and unplug the lower terminal strip B 3 The terminal strip can be unplugged after undoing the right and the left fixing screws C 4 Set switch S1 of the code switch D Fig 4 to ON and S2 to S7 to OFF The control unit NRS 1 40 1 has now the node ID 1 5 Set switches S1 and S2 of the code swit...

Страница 32: ...e of the equipment set the node IDs of the individual devices as follows Control unit NRS 1 40 1 Control unit NRS 1 40 1 Sensor 1 e g level electrode NRG 1 40 as device 1 Sensor 2 e g level electrode NRG 1 40 as device 2 Sensor 3 e g level electrode NRG 1 41 1 Sensor 4 e g Temperature transmitter TRV 5 40 X X 1 X 2 X 3 X 4 1 2 3 4 5 Reserved area Control unit NRS 1 40 2 Control unit NRS 1 40 2 Sen...

Страница 33: ...he CAN bus system The node ID 0 is not permissible Attention Annex continued Setting the Node ID continued To set the node ID remove the right and left fixing screws and detach the lower terminal strip Set the node ID via code switches D Fig 4 S1 to S7 as specified in the above table Node ID by using a thin blade screwdriver Re insert terminal strip B and fasten the fixing screws C Enter the adjus...

Страница 34: ...sposed of separately For the disposal of the control unit observe the pertinent legal regulations concerning waste disposal Decommissioning First unplug the terminal strips A B For this purpose turn the right and left fixing screws C in direction of the arrow until the terminal strip can be removed Undo the fixing slide in order to snap out the controller and take it off the supporting rail ...

Страница 35: ...35 For your notes ...

Страница 36: ...8607 02 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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