Related Manuals for GESTRA NRG 26-60
Summary of Contents for GESTRA NRG 26-60
- Page 1 Level Electrode NRG 26-60 Installation & Operating Manual 819875-01 E n g l i s h...
-
Page 2: Table Of Contents
Bus line, cable length and cross-section ....................34 Example ..............................34 Important notes on connecting the CAN bus system ................. 35 Pin assignment of the CAN bus connector and coupling for non pre-wired control cables ......35 NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 3 Taking out of service/Disassembly ......................53 Cleaning the level electrode ......................... 54 Cleaning interval ............................54 Disposal ................................ 54 Returning decontaminated equipment ......................54 Declaration of Conformity; Standards and Directives ................. 55 NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 4: Content Of This Manual
BAN 819875-00/08-2019cm © Copyright All rights reserved. Any misuse, particularly reproduction and dissemination to third parties, is not permit- ted. The General Terms & Conditions of GESTRA AG apply. Scope of delivery/Product package 1 x level electrode NRG 26-60 ■... -
Page 5: How To Use This Manual
How to use this Manual This Installation & Operating Manual describes the correct use of the NRG 26-60 level electrode. It applies to all persons who integrate this equipment into control systems, install, bring into service, op- erate, maintain and dispose of this equipment. Anyone carrying out the above-mentioned activities must have read this Installation &... -
Page 6: Types Of Warning
Warning of a dangerous situation that may possibly result in death or serious injury. CAUTION Warning of a situation that may result in minor or moderate injury. ATTENTION Warning of a situation that will result in damage to property or the environment. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 7: Specialist Terms/Abbreviations
Data transmission standard and interface for connecting electronic equipment, sensors and control systems. Data can be sent and received. NRG .. / URS .. / URB .. / SRL .. / etc. Equipment and type designations of GESTRA AG, see page 9. SELV Safety Extra Low Voltage... -
Page 8: Usage For The Intended Purpose
Usage for the intended purpose Use as a water level controller The NRG 26-60 level electrode can be used together with an NRR 2-60/NRR 2-61 level controller to continuously measure the water level in steam boiler and hot water installations or in condensate and feedwater tanks. -
Page 9: Admissible System Components
Do not use the equipment in potentially explosive atmospheres. Do not bring any equipment into service that does not have its own specific name plate. The name plate indicates the technical features of the equipment. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 10: Basic Safety Notes
Check that the plant is not carrying live voltage before commencing work. ■ Danger to life from a faulty NRG 26-60 level electrode due to the sudden escape of hot steam or hot water. Jolts and impacts during transport or installation can result in damage to or leaks in the NRG 26-60 level electrode, causing pressurised hot steam or hot water to escape through the pres- sure relief hole. -
Page 11: Required Personnel Qualifications
Persons trained by the plant operator to work Refits Specialist staff with pressure and temperature. Fig. 2 Notes on product liability We the manufacturer cannot accept any liability for damages resulting from improper use of the equip- ment. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 12: Function
A protective tube provided on site keeps it functioning reliably (see page 27 “Installation examples”). A capacitive NRG 26-60 level electrode can be installed in a protective tube or level pot together with an NRG 1x-60 or NRG 1x-61 level electrode. - Page 13 Indications and signals, see page 45 / 47 * The NRG 26-60 level electrode has a green 4-digit, 7-segment display for showing readings, status infor- mation and error codes. The operating status is indicated by a red and green LED.
- Page 14 If necessary, you can adapt the electrode parameters to suit on-site conditions at the plant. You can set parameters and change factory settings using a rotary knob on the terminal box, see page 36 ff. NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 15: Technical Data
Sensitivity (minimum conductivity) ■ Water ≥ 0.5 µS/cm (see page 8 “Influence of the fluid ◆ to be monitored”) Supply voltage 24 V DC ±20% ■ Power consumption Max. 7 W ■ NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 16 Approx. 2.1 kg ■ Admissible installation positions Vertical ■ Oblique to a maximum inclination of 45°. In this case, the length of the electrode rod is limited ■ to 688 mm maximum. NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 17: Example Name Plate/Identification
Material number-serial number & GESTRA AG Münchener Str.77 28215 Bremen Made in Germany Fig. 3 The date of production (quarter and year) is stamped on the screw-in body of each level electrode. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 18: Factory Settings
Factory settings The NRG 26-60 level electrode is delivered ex-works with the following settings: Parameter values Display in Parameter Unit menu NRG 26-60 Controller group 0001 - - - Baud rate bd.rt 0050 kbit/s Raw value (hex) CAL.L Calibrate start of measuring range variable approx. -
Page 19: Overall View Of The Nrg 26-60
M12 CAN bus connector, 5-pole, A-coded Sheath (simplified view) Seal seat for sealing ring Sealing ring D 27 x 32, form D, DIN 7603-2.4068, bright annealed Electrode thread Electrode Electrode rod insulation, PTFE Fig. 5 NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 20: Dimensions Of The Nrg 26-60
238 °C Ø 15 1004 1110 1000 1214 1100 1319 1200 1423 1300 1528 1400 Fig. 6 All lengths and diameters 1636 1500 in mm 2156 2000 NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 21: Preparing For Installation
Take further measures to protect the equipment from harmful environmental influences ■ such as lightning, insects and animals, and salty air. You will need the following tools: Torque wrench (with size 41 open-ended spanner attachment), see page 20: ■ NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 22: Installation
To prevent current leaks, maintain a minimum distance of 14 mm between the electrode ■ and earth (flange or tank wall). Check the boiler standpipe and flange during the preliminary boiler inspection. ■ NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 23: Sealing Surface Dimensions For Nrg 26-60
I. Sealing ring D 27 x 32 ◆ DIN 7603-2.4068, bright annealed Prohibited seal materials: Hemp, PTFE tape ■ Conductive paste or grease ■ Fig. 8 NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 24: Installing Two Level Electrodes In A Flange By Detaching A Terminal Box
Therefore, detach all connecting cables from the electrode to the terminal box before ■ unscrewing the level electrode from the standpipe. NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 25 You can now remove the terminal box or screw it onto the electrode. When fully removing the terminal box, feed all detached connecting cables through the slackened nut and the hole in the terminal box. Install the second electrode in the flange. NRG 26-60 - Installation & Operating Manual - 819875-01...
- Page 26 (earth connection) back onto the terminal box. Finally, check the wiring one more time. Close the rear panel of the second electrode’s terminal box and screw back on. Installation example with dimensions, see Fig. 12, page 29 NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 27: Installation Examples With Dimensions
Protective tube (provided on site) for internal installation Illustration not to scale. Key, see page 32 G ¾ DN 50 ≥ 14 ≤ 90° Ø 20 Fig. 10 All lengths and diameters in mm NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 28 Protective tube (provided at the site) for internal installation. Illustration not to scale. Key, see page 32 G ¾ DN 50 ≥ 14 ≤ 90° Ø 20 Fig. 11 All lengths and diameters in mm NRG 26-60 - Installation & Operating Manual - 819875-01...
- Page 29 Illustration not to scale. Key, see page 32 G ¾ G ¾ DN 100 24.5-26.0 24.5-26.0 ≥ 14 " ≤ 90° Ø 20 Fig. 12 All lengths and diameters in mm NRG 26-60 - Installation & Operating Manual - 819875-01...
- Page 30 Level pot (≥ DN 80) for external use. Illustration not to scale. Key, see page 32 G ¾ ≥ DN 20 ≥ 14 § ≥ DN 20 ≥ DN 20 Fig. 13 All lengths and diameters in mm NRG 26-60 - Installation & Operating Manual - 819875-01...
- Page 31 The angle of inclination of the level electrode must not exceed 45°, and the length of the electrode rod is limited to 688 mm maximum. Illustration not to scale. Tube e.g. 33.7 x 3.2 Fig. 14 All lengths and diameters in mm NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 32: Aligning The Terminal Box
Never rotate the terminal box more than 180 degrees in either direction. ■ If the terminal box needs to be rotated by >180° or fully removed, proceed as described on pages 24 to 26. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 33: Functional Elements
Cover screws M4 x 16 mm Operating panel with 4-digit LED display/alarm and status LEDs and rotary knob, see page 45 M12 CAN bus socket, 5-pole, A-coded M12 CAN bus connector, 5-pole, A-coded Fig. 15 NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 34: Connecting The Can Bus System
- 0 V 120 Ω + 24 V CH = CAN High 24V DC CL = CAN Low Ω S = shield – 100 - 240 V AC Terminating Fig. 16 resistor NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 35: Important Notes On Connecting The Can Bus System
If non pre-wired control cables are used, you must wire the CAN bus connector and couplings as shown in the wiring diagram Fig. 17. Connector Coupling Fig. 17 Shield + 24 V Power supply Power supply CAN High data line CAN Low data line NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 36: Bringing Into Service
Parameters are also password-protected when the equipment has been restarted, if password protection was previously enabled, see page 43. Default ex-works password The default password is “1902” and cannot be changed. Password protection is available from software version S-16 onwards. NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 37 The display then alternates between the selected parameter and its current value. Press and hold the rotary knob until the current parameter value flashes on the display. Move on to step 8. NRG 26-60 - Installation & Operating Manual - 819875-01...
- Page 38 ConP = activate compatibility mode; for operation with SPECTORconnect, do not ■ change setting (ConP = oFF) InFo = view software version and equipment type ■ = enable/disable password protection ■ NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 39: Notes On Changing The Communication Parameter "Grp Or Bd.rt
Bringing into service Notes on changing the communication parameter “GrP or bd.rt” All CAN bus equipment from GESTRA AG has default ex-works parameter settings, which enable a standard system to be brought into operation without making any changes. Please follow the steps below if you need to make changes to communication parameters: Set the same baud rate for all bus nodes. -
Page 40: Changing The Baud Rate "Bd.rt
Press and hold the rotary knob until the new value is displayed. Save your setting by pressing the rotary knob for approx. 1 second. Continue with calibration “CAL.P” or “CAL.H”. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 41: Independent Rapid Calibration At A Water Level Of > 25% Of The Active Measuring Range "Cal.p
Press and hold the rotary knob until the current time constant flashes on the display. Set the desired time constant (1 to 30 seconds). Save your setting by pressing the rotary knob for approx. 1 second. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 42: Manually Initiating A Display Test
Press and hold the rotary knob until the current status flashes on the display. Set the required status (off/on). ConP = on: This enables the higher-resolution NRG 26-60 readings to be displayed on the URB 2 operating terminal (by conversion from 16 bit to 10 bit). ConP = oFF: 16-bit resolution of the NRG 26-60 readings. -
Page 43: Enabling/Disabling Password Protection
“PW” alternates with the set status, e.g. “oFF or on”, on the display. You can quit the menu by waiting (message “quit”) or by turning the rotary knob to the actual value. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 44: Check The Min And Max Limit Values Of The Nrr 2-6X Level Controller By Raising Or Lowering The Level
Never start up any plant that has not passed the above switchpoint check. ■ The NRG 26-60 level electrode may only be repaired by the manufacturer, GESTRA AG. ■ Only replace faulty equipment with identical equipment from GESTRA AG. -
Page 45: Starting, Operation And Testing
Priority of error code display Higher priority error codes overwrite lower ones on the display! See page 48 ff. for fault indications and the error code table. NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 46 If the level electrode does not behave as described above, it may be faulty. ■ Perform failure analysis. ■ The NRG 26-60 level electrode may only be repaired by the manufacturer, GESTRA AG. ■ Only replace faulty equipment with identical equipment from GESTRA AG. ■...
-
Page 47: System Malfunctions
Switch off the voltage to the plant and secure so that it cannot be switched back on. ■ Check that the plant is not carrying live voltage before commencing work. ■ NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 48: Indication Of System Malfunctions Using Error Codes
Replace the level electrode capacitance (1nF || 47pF) Channel 1 reading with disabled E.010 PWMTSTCh1Err Replace the level electrode measurement signal Channel 2 reading with disabled E.011 PWMTSTCh2Err Replace the level electrode measurement signal NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 49 Virtually all of the aforementioned error codes can be caused by EMC interference. This is less likely to be the case for permanent errors, but should be considered for sporadic error messages. NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 50: Common Application And Usage Errors
Calibrate the measuring range at the operating point. ■ The measuring range is incorrectly set. ■ Inspect the electrode and protective tube for soiling and ■ The electrode or protective tube is soiled. ■ clean if necessary. NRG 26-60 - Installation & Operating Manual - 819875-01... - Page 51 Reduce the ambient temperature around the terminal If the temperature rises above 75 °C, the error code ■ box, e.g. by cooling. E.027 (Overtemp Err) appears and a fault or alarm shutdown occurs in the NRR 2-60/NRR 2-61. NRG 26-60 - Installation & Operating Manual - 819875-01...
-
Page 52: Checking Installation And Function
MAX alarm limit set in the NRR 2-60/NRR 2-61 level controller. In this case, the equipment must behave as if there were an alarm. Check the switchpoint when bringing into service and every time the NRG 26-60 level electrode ■... -
Page 53: Taking Out Of Service/Disassembly
An alarm is triggered when the CAN bus cable is interrupted. If the terminal box needs to be rotated by >180° in relation to the electrode or needs to be fully removed, proceed as described on pages 24 to 26. NRG 26-60 - Installation & Operating Manual - 819875-01... -
Page 54: Cleaning The Level Electrode
GESTRA AG. Such media include solid, liquid or gaseous substances, mixtures of these, or radiation. GESTRA AG can accept returned products only if accompanied by a completed and signed return note and also a completed and signed declaration of decontamination. -
Page 55: Declaration Of Conformity; Standards And Directives
You can find details on the conformity of the equipment and the applicable standards and directives in the Declaration of Conformity and associated certificates. You can download the Declaration of Conformity from www.gestra.com and request relevant certificates by writing to the following address: GESTRA AG Münchener Straße 77... - Page 56 Tel. +49 421 3503 0 Unit 1 Sopwith Park, Royce Close, +49 421 3503 393 West Portway Business Park, Andover, e-mail info@de.gestra.com Hampshire SP10 3TS Website www.gestra.com United Kingdom 819875-01/10-2022cm (808949-01) · GESTRA AG · Bremen · Printed in Germany...
Need help?
Do you have a question about the NRG 26-60 and is the answer not in the manual?
Questions and answers