GESTRA NRR 2-52 Original Installation Instructions Download Page 20 | Manualshive

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Before putting the level control system into operation

Establishing measuring range

Attention

* When connecting level transmitter NRGT 26-1 set the lower and the upper end of the

measuring range

only

in the transmitter.

o

Lower end of measuring range, adjustable

p

Upper end of measuring range, adjustable

q

Measuring range [mm] = xxx %

r

Inactive area

s

Max. length of installation at 238 °C

Adjust the lower and upper end of the measu-

ring range for level control. The resulting

measuring range

C

is the active control range.

Please calculate the percentage value of the

measuring range.

e

f

g

NRG 2.-..
NRGT 26-1

h

h

37

26

i

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Summary of Contents for NRR 2-52

Page 1: ...1 E N English Level Controller NRR 2 52 Level Controller NRR 2 53 Operating Display Unit URB 50 NRR 2 52 NRR 2 53 URB 50 Original Installation Instructions 819222 03 ...

Page 2: ... cabinet Mounting level controller Dimensions NRR 2 52 NRR 2 53 10 Key 10 Installation in control cabinet 10 Name plate marking 11 In control cabinet Installing the operating display unit Dimensions URB 50 12 Key 12 Installation in control cabinet 12 Name plate marking 12 In control cabinet Wiring level controller Wiring diagram for level controller NRR 2 52 13 Key 13 Wiring diagram for level cont...

Page 3: ... NRR 2 52 NRR 2 53 17 Level controller Changing factory settings Changing function and input for level electrode transmitter 18 Tools 19 Before putting the level control system into operation Establishing measuring range 20 Operating display unit URB 50 User interface 21 Key 21 Switch on supply voltage 21 Explanation of icons 22 Commissioning procedure Adjusting the MIN MAX switchpoints and setpoi...

Page 4: ...ng up a password and logging in 31 Key 31 Log out 33 Alarm malfunction list 34 Key 34 Error alarm and warning messages Indication diagnosis and remedy 35 Further Notes Action against high frequency interference 36 Decommissioning replacing the level controller NRR 2 5 36 Decommissioning replacing the operating display unit URB 50 36 Disposal 36 ...

Page 5: ...l transmitter NRGT 26 1 X X 3 position stepping controller with proportional plus integral control action PI controller and control of an electrically actuated control valve X Continuous controller as PI controller for the control of an electro pneumatically operated control valve X Indication of MIN MAX water level limit X X Current inputs for steam and feedwater flowrate 3 element control option...

Page 6: ...e NRG 2 and level transmitter NRGT 26 is type approved according to VdTÜV Bulletin Wasserüberwachung Water Monitoring 100 The VdTÜV Bulletin Wasserstand Water Level 100 specifies the requirements made on water level control and limiting equipment for boilers ATEX Atmosphère Explosible According to the European Directive 2014 34 EU the equipment must not be used in explosion risk areas LV Low Volta...

Page 7: ... contacts 8 A 250 V AC 30 V DC cos ϕ 1 De energizing delay 3 seconds MIN 1 MIN 2 MAX 1 MAX 2 alarm 1 analogue output 4 20 mA max load 500 ohm manipulated variable Y Provide inductive loads with RC combinations according to manufacturer s specification to ensure interference suppression NRR 2 52 NRR 2 53 1 analogue output 4 20 mA max load 500 ohm e g for actual value indication optional Indicators ...

Page 8: ...tificate VdTÜV Bulletin Water Lever 100 Water Level 100 Requirements made on water level limiting control equipment Type approval no TÜV WR XX 427 see name plate UL cUL CSA Approval UL 508 and CSA C22 2 No 14 13 Standards for Industrial Control Equipment File E243189 Technical data continued URB 50 Supply voltage 24 VDC 20 Fuse internal automatic Power consumption 8 VA Input output Interface for d...

Page 9: ...ront panel IP 65 to EN 60529 Back IP 20 to EN 60529 Weight approx 1 0 kg Ambient temperature when system is switched on 0 55 C during operation 10 55 C Transport temperature 20 80 C 100 hours defrosting time of the de energized equipment before it can be put into operation 24 hours Storage temperature 20 70 C defrosting time of the de energized equipment before it can be put into operation 24 hour...

Page 10: ... Fig 1 1 Upper terminal strip 2 Lower terminal strip Key Installation in control cabinet The level controller NRR 2 52 NRR 2 53 is clipped onto the support rail type TH 35 EN 60715 in the control cabinet Fig 1 4 3 Housing 4 Supporting rail type TH 35 EN 60715 4 3 1 2 100 74 120 ...

Page 11: ...6 1 21 6 26 11 18 3 23 8 28 13 19 4 24 9 29 14 20 5 25 10 30 15 H L 24 V 20 _ _ _ _ _ _ TÜV WR XX 427 Name plate marking Fig 2 In control cabinet Mounting level controller continued Name plate NRR 2 52 Type designation Fuse provided on site Supply voltage Power consumption Protection Ambient temperature External fuse for output contacts Connecting level electrode level transmitter Safety note Disp...

Page 12: ...ensions indicated in Fig 3 and 4 n Insert the operating display unit into the control panel cut out Make sure the gasket 6 is properly seated n Insert and fasten the screws Fig 5 until the edges of the frame are flush with the panel of the control cabinet 7 Fixing elements 52 Fig 3 Fig 4 Fig 5 4 107 96 6 5 7 136 Name plate marking Type designation Disposal note Manufacturer Safety note Ambient tem...

Page 13: ...c Actual value output 4 20 mA optional Key d Indication of valve position potentiometer 0 1000 Ω e IN 2 4 20 mA for feedwater flowrate optional f IN 3 4 20 mA for steam flowrate optional g Data line for operating display unit URB 50 h Level electrode NRG 21 NRG 26 21 Fit a 6 8 kOhm resistor between terminals 13 14 of the level electrode ER 96 i Level transmitter NRGT 26 1 4 20 mA with screen conne...

Page 14: ... c Actual value output 4 20 mA optional Key d Output 4 20 mA manipulated variable Y e IN 2 4 20 mA for feedwater flowrate optional f IN 3 4 20 mA for steam flowrate optional g Data line for operating display unit URB 50 h Level electrode NRG 21 NRG 26 21 Fit a 6 8 kOhm resistor between terminals 13 14 of the level electrode ER 96 i Level transmitter NRGT 26 1 4 20 mA with screen connected in termi...

Page 15: ... voltage Pin assignment for data line NRR 2 52 NRR 2 53 URB 50 PIN 2 Data_L PIN 7 Data_H k D SUB connector with 9 poles for data line l Connector with 3 poles for supply voltage connection 24 V DC m Connection for supply voltage 24 V DC pin assignment Key Fig 9 Fig 10 Fig 11 k 24V L Common M 1 2 3 L M k l m L L l CEP ...

Page 16: ...f inductive loads voltage spikes are produced that may impair the operation of control and measuring systems Connected inductive loads must be provided with suppressors such as RC combinations as specified by the manufacturer Attention n Do not use unused terminals as support point terminals Connecting the potentiometer for indication of valve positions connections IN OUT 4 20 mA To connect the eq...

Page 17: ... n Make sure that connecting cables leading to the equipment are segregated and run separately from power cables n The level transmitter must be separately connected to its own voltage supply Level controller Factory settings Level controller NRR 2 52 NRR 2 53 The level controller features the following factory set default values n De energizing delay 3 sec factory set n Voltage input for connecti...

Page 18: ...tter Level controller Changing factory settings The input and the function are determined by the code switch n setting To change the code switch setting proceed as follows n Switch off supply voltage n Lower terminal strip Unscrew the left and right fixing screws Fig 7 8 n Remove the terminal strip After the new code switch settings have been established as new defaults n Attach lower terminal str...

Page 19: ...ller Changing factory settings continued Changing function and input for level electrode transmitter continued Fig 13 When connecting level transmitter NRGT 26 1 set the lower and the upper end of the measuring range only in the transmitter For this purpose follow the instructions given in the installation operating manual for the NRGT 26 1 Do not change the code switch n settings of S1 and S4 Att...

Page 20: ...the transmitter o Lower end of measuring range adjustable p Upper end of measuring range adjustable q Measuring range mm xxx r Inactive area s Max length of installation at 238 C Adjust the lower and upper end of the measu ring range for level control The resulting measuring range C is the active control range Please calculate the percentage value of the measuring range e f g NRG 2 NRGT 26 1 h h 3...

Page 21: ... start window after approx 5 minutes time out The button is only shown for level controller NRR 2 52 and if a potentiometer is provided for indicating the valve position Note Switch on supply voltage Key t Status bar u Display field v Input field w Button bar Switch on the supply voltage for the level controller NRR 2 5 and for the operating display unit URB 50 The LED of the level controller firs...

Page 22: ...rol valve in case of internal feedback Calibration of upper end of level measuring range and valve CLOSED indication of valve position via potentiometer Calibration of end of level measuring range Calibration of valve OPEN indication of valve position via potentiometer Control valve is motored into OPEN position Control valve is motored into CLOSED position Go to parameter setting window for con t...

Page 23: ...ut Relay test of MAX switchpoint Relay test of MIN switchpoint Logged in Logged out Enter new password New password Deactivate password handling Password Confirm password Scroll back Switch to manual operating mode Switch to automatic operating mode Hand slider for control valve Time and date setting Alarm message Go to alarm list Go to alarm list Alarm message received Alarm message gone Go to fi...

Page 24: ...creen display 2 to enter the desired per centage value x y A z Numberpad Screen display 2 The green buttons in the following windows indicate that user input is possible When you press on these green buttons a numberpad appears and you can enter the desired values and parameter settings The bar B shows the old value and the limit range To undo any incorrect data input press the Backspace key If yo...

Page 25: ...tton 0 actual value output 4 mA Calibrating upper end of measuring range Fill tank until the upper end of the measuring range p is reached Press the green button and use the on screen numberpad to enter 100 Then press button actual value output 20 mA OR Calibrating upper end of measuring range Raise water level until at least 25 of the measuring range is reached Press the green button and use the ...

Page 26: ...viation responds quickly and may open closes all the time Example Measuring range 100 200 mm of sightglass Setpoint SP 80 of measuring range 160 mm Proportional band Pb 20 of setpoint 16 32 mm If the measuring range is 100 200 mm and the setpoint 80 160 mm the proportional band will be 16 32 mm or within the range of 128 to 192 mm Integral action time ti larger slow correction of deviations respon...

Page 27: ... the diffe rence steam flowrate feedwater flowrate on the measured level signal Screen display 5 Press button to open the parameter setting window for analogue signal inputs 4 20 mA Note Controlled actual value level steam flowrate feedwater flowrate x evaluation factor only if steam flowrate feedwater flowrate 0 For each flowrate setting press the green button Use the on screen numberpad to enter...

Page 28: ...until 100 is indicated in the green button Press the key 100 Or press the green button and enter 100 in the numberpad Commissioning continued Only NRR 2 52 Calibrating the potentiometer for indication of valve position Operation Manual actuation of control valve Screen display 8 Switch back to automatic operation Press button to switch to manual operating mode Use the hand slider to change the pos...

Page 29: ...log window for the control system screen display 9 Operation continued Trending Key Press button to go back to screen display 4 Screen display 9 Screen display 1 Press button to open the trend log window Screen display 10 K Designation of trend curves Level green curve Position of control valve grey curve Setpoint dark green curve Alarm message red curves Feedwater flowrate blue curve Level correc...

Page 30: ...ive con tact icon turns red Testing MAX alarm Press and hold down button M for at least 3 sec After the de energizing delay the output contact 26 27 opens and the respective con tact icon turns red Press button to go back to screen display 11 Screen display 12 Press button to open the time date window Press the green button and use the on screen numberpad to enter the day month year and hours minu...

Page 31: ...use the on screen numberpad to enter 0 during first commis sioning Press button to confirm the password input Screen display 15 appears To log out press button The following button s appear s Press again button Screen display 13 appears Screen display 13 Press button Screen display 14 appears L Test button for MIN alarm M Test button for MAX alarm N Log out symbol in status bar Key Screen display ...

Page 32: ...can enter a new password to deactivate the password handling to go back to the start window All buttons and input options are now available Press the green button and use the on screen numberpad to enter your new password twice Press button to confirm the password and go back to screen display 15 Press button to go back to screen display 15 NRR 2 5 NRR 2 5 ...

Page 33: ...g out again To log out press button The following button s appear s Press again button Screen display 17 appears Screen display 17 Press button to go back to the start window All buttons and input options are now un available The symbol Logged out appears in the status bar NRR 2 5 N NRR 2 5 ...

Page 34: ...at there is an alarm message Press the button with the warning triangle O to view the alarm list screen display 23 Press button to go back to the start window NRR 2 5 NRR 2 5 O Malfunction or alarm message received Key P Hand slider The active alarm or malfunction is highligh ted in red Press button to call up the next active message to scroll forward in the alarm list also possible by means of ha...

Page 35: ...ment Code A 001 MAX switchpoint exceeded A 002 Value below MIN switchpoint E 005 Level electrode defective measuring volta ge 0 5 VDC Check level electrode and if necessary replace it Check electrical connection Level transmitter defective measuring current 4 mA Check level transmitter and if necessary replace it Check electrical connection E 006 Level electrode defective measuring volta ge 7 VDC ...

Page 36: ...pression by means of hinged shell ferrite rings Further Notes If faults occur that are not listed above or cannot be corrected please contact our service centre or authorized agency in your country Fig 12 n Switch off supply voltage and cut off power supply to the equipment n Remove the lower and upper terminal strips Unscrew the left and right fixing screws Fig 12 n Release the white fixing slide...

Page 37: ...37 For your Notes ...

Page 38: ...38 For your Notes ...

Page 39: ...39 For your Notes ...

Page 40: ...8865 04 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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