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Malfunctions

Fault finding list for troubleshooting

High water level not yet reached – High-level alarm

Fault:

The electrode tip is too long.

Remedy:

Cut electrode tips to the length required for the high level switchpoint.

Fault:

The electrode tip has earth contact.

Remedy:

Change installation position.

Fault:

Thermal fuse has been triggered.

Remedy:

The ambient temperature must not exceed 70 °C.

Fault:

The internal insulation of the electrode rod is damaged.

Remedy:

Replace level electrode.

High water level reached – no function

Fault:

Mains voltage not applied.

Remedy:

Apply mains voltage. Connect electrode according to wiring diagram.

Fault:

The electrode tip is too short.

Remedy:

Remove electrode tip. Install new electrode tip and cut it to the length required for the high

level switchpoint.

Fault:

The electrode housing does not have earth connection to the boiler.

Remedy:

Clean seating surfaces and insert metal joint ring (of stainless steel 1.4301)

D 27 x 32 to DIN 7603. Do

not

insulate 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.

Equipment fails to work – Indication of a malfunction

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 installati-

on. 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.

If faults occur that are not listed above or cannot be corrected, please contact our service centre or
authorized agency in your country.

Содержание NRG 16-41

Страница 1: ...1 E N English Original Installation Instructions 810743 04 Level Electrode NRG 16 41 NRG 16 41 1 NRG 17 41 NRG 17 41 1 NRG 19 41 NRG 19 41 1 ...

Страница 2: ...1 1 NRG 17 41 41 1 NRG 19 41 41 1 step 1 14 NRG 16 41 41 1 NRG 17 41 41 1 NRG 19 41 41 1 step 2 14 Attention 14 Note 14 Tools 14 Examples of installation NRG 16 41 1 NRG 17 41 1 NRG 19 41 1 15 Key 16 Installation NRG 16 41 41 1 NRG 17 41 41 1 NRG 19 41 41 1 7 Name plate marking 8 Dimensions NRG 16 41 41 1 NRG 17 41 41 1 9 Dimensions NRG 19 41 41 1 10 Technical Data NRG 16 41 41 1 NRG 17 41 41 1 NR...

Страница 3: ...agram 20 Attention 20 Note 21 Tools 21 Contents continued Page Malfunctions Fault finding list for troubleshooting 26 Operation High water level limiter Max alarm 25 Note 25 Commissioning Procedure Check wiring 25 Apply mains voltage 25 Basic Settings CAN bus 21 Node ID 22 Factory set default values 23 Assigning changing node ID 23 Attention 23 Code switch settings 24 ...

Страница 4: ...s hot steam can escape through the lateral vent hole on the electrode body This presents the risk of severe scalding Do not stay near the electrode during operation Safety note The equipment must only be installed and commissioned by qualified staff Maintenance and service work must only be performed by adequately trained persons who have a recognized level of competence Attention The name plate i...

Страница 5: ...G 19 41 1 1 S S joint ring D 27x32 mm to DIN 7603 made of 1 4301 bright annealed 1 Terminating resistor 120 Ω 1 Installation manual Description The level electrode operation is based on the conductive measuring principle The NRG 1 41 and NRG 1 41 1 are designed for signalling the max liquid level in electrically conductive liquids n One liquid level with one switchpoint The NRG 1 41 is to be used ...

Страница 6: ...ivity of the liquid is used to signal the liquid level Some liquids are conductive which means that they allow an electric current to flow through them For the safe functioning of this device a minimum conductivity of the liquid to be measured is required The conductivity measurement method can detect two conditions electrode rod submerged or exposed meaning switchpoint reached or exceeded or not ...

Страница 7: ...lation PEEK Lengths supplied 500 mm 1000 mm 1500 mm Sensitivity of response 0 5 µS cm at 25 C Supply voltage 18 36 V DC coming from NRS 1 41 NRS 1 40 1 NRS 1 40 2 Current consumption 35 mA Fuse Electronic thermal fuse Tmax 85 C Hysteresis 2 K Electrode voltage 2 Vss Data exchange CAN bus to DIN ISO 11898 CANopen Protocol Indicators and adjustors One 10 pole code switch for setting node ID and baud...

Страница 8: ...ar 1450psi 311 C 592 F Node ID __ __ __ 0525 GESTRA AG Münchener Str 77 D 28215 Bremen TÜV SWB SHWS STW STB xx 413 0 5 µS cm Betriebsanleitung beachten See installation instructions Hier öffnen Open here Ouvrir ici Voir instructions de montage 18 36 V DC Tamb 70 C 158 F IN OUT CAN Bus PN 63 PN 160 PN 40 Pmax Tmax NRG 17 41 NRG 19 41 NRG 16 41 G 3 4 1 4571 IP65 60 bar 870psi 260 C 500 F 32 bar 464p...

Страница 9: ...9 GESTRA Steam Systems GESTRA NRG 1 41 1 MAX Fig 2 EN ISO 228 1 1500 1000 1500 140 337 5 185 Technical Data continued Dimensions NRG 16 41 41 1 NRG 17 41 41 1 175 85 30 ...

Страница 10: ...10 GESTRA Steam Systems GESTRA NRG 1 41 1 MAX Fig 3 EN ISO 228 1 1500 1000 1500 175 140 419 30 185 120 Technical Data continued Dimensions NRG 19 41 41 1 ...

Страница 11: ...11 Fig 6 Fig 4 Fig 5 Fig 7 N 8 N 10 0 5 EN ISO 228 1 33 Design NRG 16 41 41 1 NRG 17 41 41 1 NRG 19 41 19 41 1 5 f 6 7 1 2 3 4 ...

Страница 12: ...12 K H 1 1 2 2 3 3 1 2 3 4 5 LW HW 1 2 3 5 6 7 4 8 910 ON P R O D U C T D E S I G N A W A R D MAX Functional Elements Fig 8 Fig 9 NRG 16 41 41 1 NRG 17 41 41 1 NRG 19 41 19 41 1 9 0 9 8 a e d b c ...

Страница 13: ...9 M 12 sensor plug 5 poles A coded M 12 sensor socket 5 poles A coded 0 Cover a LED green Program running LED red CAN bus communication b 10 pole code selector for setting node ID and baud rate c Terminal strip d PE connection e Plug f Thermal insulation provided on site d 20 mm outside of thermal insulation of steam generating unit Design Functional Elements continued Key ...

Страница 14: ...1 Slide spring 3 along electrode tip 4 so that its end completely enters into small bore 2 Note n For the approval of the boiler standpipe the relevant regulations must be considered n Refer to page 15 for three typical installation examples Tools n Open end spanner A F 17 mm n Open end spanner A F 41 mm n Hacksaw n Flat file medium cut NRG 16 41 41 1 NRG 17 41 41 1 NRG 19 41 19 41 1 step 2 1 Chec...

Страница 15: ...DN 20 24 5 24 5 20 20 Fig 10 Fig 12 1 20 3000 DN 20 20 90 10 Installation continued Examples of installation NRG 16 41 1 NRG 17 41 1 NRG 19 41 1 i g h k m n 9 0 Centre distance g j o k 1 20 20 DN 50 20 90 g h i n k l j o p j j ...

Страница 16: ...ns must be considered i Vent hole Provide vent hole as close to the boiler wall as possible j High water level HW k Electrode rod d 8 mm l Protection tube DN 80 m Protection tube DN 100 n Electrode distance 14 mm o Low water level p Reducer DIN 2616 2 K 88 9 x 3 2 42 4 x 2 6 W q Reducer DIN 2616 2 K 114 3 x 3 6 48 3 x 2 9 W Installation continued Key ...

Страница 17: ...semblies with plug and socket of various lengths are available as add on equipment Note that the recommended control cables are not UV resistant and must be protected by a UV resistant plastic tube or cable duct if the equipment is installed outdoors except for URB 2 The baud rate data transfer rate dictates the cable length and size between the bus nodes The total power consumption must also be t...

Страница 18: ...18 NRG 1 41 1 HW 1 2 3 S CL CH 18V 36V DC CAN Bus 120 Ω 1 2 3 4 5 1 ON 2 3 4 5 6 7 8 9 0 Electrical Connection continued Wiring diagram r s Fig 13 r s ...

Страница 19: ...nnection continued Fig 15 RES 1 Fig 16 RES 2 r Terminating resistor 120 Ω RES 1 or RES 2 s CAN bus line twisted pair control cable t Pin 1 Screen u Pin 2 Power supply 24 V DC red v Pin 3 Power supply 24 V DC black w Pin 4 CAN data line CH white x Pin 5 CAN data line CL blue Key x x 120 Ω 120 Ω ...

Страница 20: ...the screen is separated from the central earthing point CEP n To protect the switching contacts fuse circuit with T 2 5 A or according to TRD regulations 1 0 A for 72 h operation n If two or more system components are connected in a CAN bus system provide the first and the last device with a terminating resistor of 120 Ω Fig 15 Fig 16 n Note that in a CAN bus network only one water level limiting ...

Страница 21: ...ult finding list in the section Troubleshooting 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 equipment features an electronic 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...

Страница 22: ...RV 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 97 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 level limiter hi alarm 2 Factory setting ORT 6 98 Factory setting On off level control Reserved NRS 1 42 NRG 16 42 X 1 X X 1 19 20 21 Factor...

Страница 23: ...actory setting n Do not use a node ID for more than one piece of equipment in the CAN bus system 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 1 Undo and remove screws 8 Remove housing cover 0 2 Set code switch b to the required position Please observe the se...

Страница 24: ...D S1 1 OFF S2 2 ON S3 4 OFF S4 8 OFF S5 16 OFF S6 32 OFF S7 64 ON Node ID S1 1 ON S2 2 ON S3 4 OFF S4 8 OFF S5 16 OFF S6 32 OFF S7 64 7 4 Baud rate S8 S9 S0 250 kBit s Length of cable 125 m OFF ON OFF OFF 125 kBit s ON ON 250 m ON 100 kBit s OFF OFF 335 m ON 50 kBit s OFF ON 500 m ON 20 kBit s ON OFF 1000 m ON 10 kBit s ON ON 1000 m b b 1 ON 2 3 4 5 6 7 8 9 0 ...

Страница 25: ...ram Fig 13 14 Check wiring Apply mains voltage Operation Used in combination with switching controller NRS 1 41 NRS 1 40 1 NRS 1 40 2 in pressurized hot water plants and steam boilers working in accordance with TRD 401 TRD 602 TRD 604 or other national regulations High water level limiter Max alarm Note n Should malfunctions occur during the commissioning procedure refer to section Troubleshooting...

Страница 26: ... 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 Equipment fails to work Indication of a malfunction Fault In spite of correct wiring and commissioning...

Страница 27: ...27 For your Notes ...

Страница 28: ...8720 03 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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