Installation & Operating Instructions 818601
Contents
1. If sum 2 exceeds sum 1 supply the CAN bus with 24 V DC coming from a separate and stabilized safety power supply unit e g SITOP Smart 24 V 2 5 A The power supply unit must be electrically isolated from dangerous contact voltages and must meet at least the requirements on double or reinforced isolation acc to DIN EN 50178 or DIN 61010 1 or DIN EN 60730 1 or DIN EN 60950 safe isolation The power supply unit must be provided with an overcurrent protective device in accordance with EN 61010 1 AN Attention If a safety power supply unit e g SITOP smart 24 V 2 5 A is used for the voltage supply of the CAN bus do not tap the supply voltage from the terminals 1 and 5 of the GESTRA control devices Wiring the connecting sockets Wire the connecting sockets as indicated in the assignment diagram Fig 5 SITOP smart is a registered trademark of Siemens AG Munich 12 Electrical Connection continues Wiring the sensor connectors Fig 5 Connector Connector Pin 1 Screen Pin 2 Power supply 24 V DC red Pin 3 Power supply 24 V DC black Pin 4 CAN data line C4 white Pin 5 CAN data line C blue Connecting jack with terminating resistor 120 Q Wiring diagram for CAN bus system example URB 2 NRS NRR LRR NRG LRG TRV NRG LRG TRV CEP TRS URB 1 EF URZ EF URZ Fig 6 13 Electrical Con2. FLOWSERVE m e GESTRA Steam Systems URB 2 Installation amp Operating Instructions 818601 01 Operating amp Display Unit B2 spector CAN Contents Important Notes Usage for the intended purpose Safety note ne Attention i ATEX Atmosph re Explosible essent tnnt tnnt tnnt tnnt Explanatory Notes SCOPE Ol SUDDIV scs icc icea scuto tet oce te trees ere eer t oet renner nrerererersrererererecererrrecerererererersrerereterery rere trey ererert errr 5 pter e en 5 6 pa gni 6 Technical Data dp 7 enu Aur MEM RR 7 DiIMEMSIONS ccccccssesssecscescsecsecscsassecscsacssssecacsacsessesaccessasaesacsassesaesaseessasansaesasensatcassasansatsasensancaceaseneas 8 Installation uil ea 9 CAN bus voltage supply Attention sss Wiring the connecting sockets Wiring the sensor connectors nnn nnne MOY BREED Wiring diagram for CAN bus system example ne Duca ER Basic Settings Bus cable Factory setting Establishing changing node ID sh En Ac m Contents continued Operation Specification of keys and navigation wheel Specification of the symbol bar sisse nennen nnne nnne tain nes Menu SIruct le oe e
3. NRS 1 40 2 TRV 5 40 1 TRV 5 40 2 Limiter 3 Limiter 4 X X 1 X 2 X43 X 4 6 7 8 9 10 Factory setting TRS 5 40 1 TRS 5 40 2 X 1 90 X 2 490 97 98 High level alarm NRS 1 41 NRG 16 41 Reserved Reserved Reserved X X 1 X 2 X43 X 4 6 5 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 Factory setting Modulating level control URZ 40 NRS 2 40 NRR 2 40 NRG 26 40 Reserved X 2 X 1 X X 1 X 2 38 39 40 41 42 Factory setting Automatic continous blowdown control EF 1 40 Reserved LRR 1 40 LRG 1 4 Reserved X 2 X 1 X X 1 X 2 48 49 50 51 52 Factory setting Control unit URB 1 URB 2 60 Factory setting 15 Operation User interface The operating and display unit URB 2 shows parameters operating conditions and other operating data The menus can be selected and all inputs can be made by using the four pushbuttons and the naviga tion wheel The operator interface of the operating and display unit URB 2 consists of four areas FLOWSERVE cesma GESTRA URB 2 x Title bar Control Limiter Display field Symbol bar Operating bar The title bar lists the menus The selected menu is highlighted by a black background Due to the limited space of the display not all menus can be shown Note Current alarms are indicated in the title bar The equi
4. 2 felalige Mey Tr la0m Electrode LRG 1x 40 Unit uS cm Range 0 5 500 uS cm MAX 0500 0 uS cm W 0000 0 uS cm MIN 0000 0 uS cm Xp 000 Hyst 000 96 ILP O gt gt Esg 4 To obtain more available elements repeat items 2 and 3 and press button ESO Note For more information on Continuous boiler blowdown measuring range conductivity control proportional band X conductivity control and switching hysteresis Hyst conductivity control see chapter Glossary on page 44 Temperature Concerning Conductivity control LRG 1x 4x and LRR 1 40 Device name Control param etal Blowdown valve 1 To set the individual parameters press button _P_ The activated item is shown in the symbol bar 2 To set the desired parameter turn the navigation wheel and confirm the input by pressing the navi gation wheel The background of the selected item is flashing 3 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation wheel The flashing stops 4 To obtain more available elements repeat items 2 and 3 and press button ES C Note 6 OFF TK LINEAR 0 0 C TK NORM NaOH H20 260uS TK AUTO Stop Temperature 000 0 C Cell constant s Attenuation GOJO For more information on Temperature compensation conductivity control TK Linear TK Norm TK Auto Cell constant and attenuation conductivity c
5. 28215 Bremen Manufacturer Fig 1 Technical Data continued Dimensions 180 MAX 55 C GESTRA URB 2 Control Limiter Level Conductivity Iiis 45 96 MAX 6000 ACT 4800 yS cm Temperature LRG ACT 150 C Temperature TRV MAX 300 ACT 150 C o Fig 2 76 AAA MAX 55 IP 54 cE Installation URB 2 The operating and display unit URB 2 is designed for installation in control cabinets 1 Provide cut out in control cabinet dimensions 174 x 145 mm max sheet thickness 10 mm 2 Unscrew the white fixing nuts and remove the housing cover If necessary you can also unscrew the stud but not more than 35 mm 3 Put the operating and display unit URB 2 into the cut out put back the housing cover screw in and tighten the fixing nuts Functional Elements URB 2 FLOWSERVE n GESTRA URB 2 Control Limiter Conductivity MAX 6000 ACT 4800 yuS cm E NP Temperature TRV MAX 300 ACT 150 C Fig 3 Functional Elements continued URB 2 continued m re Pushbutton Navigation wheel Illuminated LCD display resolution 320 x 240 Pixel Frame with indicators and adjustors Connector 5poles Housing cover 00000005 Fixing nuts for installation in control cabinet Electrical Connection Control cable NRS NRR LRR TRS URB
6. 40 1 To set the individual parameters press button CP The activated item is shown in the symbol bar 2 To set the desired parameter turn the naviga tion wheel and confirm the input by pressing the navigation wheel The background of the selected item is flashing 3 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation wheel The flashing stops 4 To obtain more available elements repeat items 2 and 3 and press button ES C Gib Note For more information on the switching times conductivity and capacitance level control see chapter Glossary on page 44 045 32 Menu Control continued Control valve Concerning Device name 1 oN OO A Level control NRG 26 40 and NRR 2 40 Control valve To set the individual parameters press button CP The activated item is shown in the symbol bar yy x To select the CANopen actuator turn the naviga tion wheel and confirm the input by pressing 0 100 the navigation wheel The background of the selected item is flashing CANopen actuator NO Turn the navigation wheel to select YES if the control valve is fitted with a CANopen actuator or LP NO if it is equipped with another type of actuator Press the navigation wheel The flashing stops To Calibrate the control valve turn the navigation wheel to the the first value to be adjusted Press the navigation wheel The b
7. of the actual values also be changed by means of the URB 2 Explanantory Notes continued Description continued Level Conductivity Temperature Actual value bar chart X Actual value numerical MIN limit MAX limit gt lt gt lt x x Switchpoints gt lt gt lt 5 0 x x x x x x Relay de energizing times Actual value output 4 20 mA X x lt Measuring range Setpoint Control parameters x x x x lt Valve position of level control valve Unit uS cm or ppm Stand by Continuous blowdown valve Operating position of the valve Purging pulse 24 h Blowdown duration Pulse interval Intermittent blowdown interval Duration of intermittent blowdown gt lt gt lt gt lt gt lt O lt x Manual Automatic operation X Function The operating amp display unit URB 2 evaluates at regular intervals the data telegrams of all sensors controllers and actuators in a CAN bus system The readings parameters settings and messages are indicated in plain text When used as second water level indicator in boiler plants TRD 401 EN 12952 53 the level is also indicated in the form of a bar graph Several languages can be selected for plain text display The password protection prevents unauthorized persons from changing parameters and settings If other menu levels are sel
8. the symbol bar continued Key Designation Function Forward Proportional increase of values P lt Backward Proportional decrease of values M Manual operation Manual mode highlighted when activated u Disabled Password protection is turned OFF a Enabled Password protection is turned ON Cancel input and quit menu press the key several times to Escape call up the start window Menu structure Home Choice gt Language gt System configuration 7 Node IDs m Baud rate Home page Steam boiler Hot water boiler gt Brightness About URB 2 Service menu Y Control Choice r gt Service Lock URB Service Unlock URB Service Key check m NRG 16 42 Level gt NRG 26 40 Level gt LRG 1x 4x Conductivity TRV 5 40 Temperature Choice Device name gt Overview Limiter gt Choiee gt Status report gt Device name r gt Control unit gt Sensitivity L Limiter Lx Measuring range m Switchpoints Switching times Control valve Control param gt Temperature Blowdown valve Fig 7 MIN Blowdown 19 Menu Start Start logo The start logo appears for approx 2 minutes after restarting the equipment During this period the parameters of the equipment connected via CAN bus are downloaded Start FLOWSERVE GESTRA Ww Device URB2 Version 311 131 xx Dat
9. 1 To wire the equipment multi core twisted pair control cable must be used for the bus line e g UNITRONIC BUS CAN 2 x 2 x mm or RE 2YCYV fl 2 x 2 x mm2 Control cable assemblies 2 x 2 x 0 32 mm cable with plug and connector of various lengths are available as add on equipment NRG LRG EF URZ TRV URB 2 The equipment is fitted with sensor plug in connectors 5 poles A coded For connecting the bus devices control cable assemblies with plug and connector 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 taken into consideration when selecting the conductor size The total power consumption is obtained from the number of bus nodes 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 1501214 and use a control cable with a larger conductor size for the distance to the control cabinet Number of pairs S8 S9 S10 Baud rate Cable length and conductor size mm OFF ON OFF 250 kBit s 125m 2 x 2 x 0 32 Factory setting ON ON OFF 125 kBit s 250 m 2x2
10. FF 46 47 FLOWSERVE cra we Agencies all over the world www gestra de Espana GESTRA ESPANOLA S A Luis Cabrera 86 88 E 28002 Madrid Tel 00 34 91 5 15 20 32 Fax 00 34 91 4 13 67 47 5 15 20 36 E mail aromero flowserve com Great Britain Flowserve GB Limited Abex Road Newbury Berkshire RG14 5EY Tel 00 44 16 35 46 99 90 Fax 00 44 16 35 3 60 34 E mail gestraukinfo flowserve com Italia Flowserve S p A Flow Control Division Via Prealpi 30 1 20032 Cormano MI Tel 00 39 02 66 32 51 Fax 00 39 02 66 32 55 60 E mail infoitaly flowserve com GESTRA AG P 0 Box 10 54 60 D 28054 Bremen M nchener Str 77 D 28215 Bremen Telephone 49 0 421 35 03 0 Fax 49 0 421 35 03 393 E Mail gestra ag flowserve com Internet www gestra de 818601 01 608cm 2005 GESTRA AG Bremen Printed in Germany Polska GESTRA POLONIA Spolka z 0 0 Ul Schuberta 104 PL 80 172 Gdansk Tel 00 48 58 3 06 10 02 00 48 58 306 10 10 Fax 00 48 58 3 06 33 00 E mail gestra gestra pl Portugal Flowserve Portuguesa Lda Av Dr Antunes Guimar es 1159 Porto 4100 082 Tel 0 03 51 22 619 87 70 Fax 003 51 22 61075 75 E mail jtavares flowserve com USA Flowserve GESTRA U S 2341 Ampere Drive Louisville KY 40299 Tel 00 15 02 267 2205 Fax 00 15 02 266 5397 E mail dgoodwin flowserve com
11. R1 40 Status report X X X X X 28 Sensitivity X 29 Switchpoints X X X 30 Proportional range X 31 Actual value output 4 20 mA X 31 Switching times X X X 32 Measuring range X X 29 Control valve X 33 Control parameters X 34 Temperature X 34 Continuous blowdown valve X 35 MIN Continuous blowdown X 36 25 Menu Control continued Control The monitored functions together with their configuration status are indicated in the display 1 To select the controlled variable press the navigation wheel The selection of the menus will be indicated 2 To select the desired control function turn the navigation wheel and then press it to confirm the selection 3 To select the equipment turn the navigation wheel until the desired item is marked and then press the navigation wheel 26 Home Control NRG 16 42 Level ON NRG 26 40 Level ON LRG 1x 4x Conductivity ON TRV 5 40 Temperature ON Home Control NRG 16 42 Level NRG 26 40 Level LRG 1x 4x Conductivity TRV 5 40 Temperature ESC Device name Menu Control continued Overview Concerning W Level control NRG 16 42 and NRS 1 42 W Level control NRG 26 40 NRS 2 40 and NRR 2 40 B Conductivity control LRG 1x 4x and LRR 1 40 The menu Overview shows current parameters such as the current readings and the adjusted limits Only applicable for manual operation 1 To operate the co
12. Temperature control TRV 5 40 and TRS 5 40 Switchpoints 1 To enter a new value turn the navigation wheel To set the individual parameters press button Channel 1 ON ix The activated item is shown in the symbol Alarms 000 C To set the desired parameter turn the naviga Channel 2 ON tion wheel and confirm the input by pressing the Control MAX 000 C navigation wheel The background of the selected Control MIN 000 C item is flashing Alarm and confirm the input by pressing the navigation Es ESC wheel The flashing stops To obtain more available elements repeat items 2 and 3 and press button ESO Gi Note 30 The adjustment range of the respective switchpoint is limited by the switchpoints above or below it as well as the 0 and 100 level values or 0 C and 650 C tempera ture Menu Control continued Switchpoints proportional range Concerning Device name Level control NRG 26 40 and NRR 2 40 Switchpoints 1 To set the individual parameters press button 045 CPV The activated item is shown in the symbol 1 080 bar 2 060 To set the desired parameter turn the naviga tion wheel and confirm the input by pressing the VEN eae NP navigation wheel The background of the selected 3 040 item is flashing 4 020 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation P U ES wheel T
13. ackground of the selected item is flashing Turn the navigation wheel to the left or to the right The valve closes or opens Press the navigation wheel for approx 1 sec to stop the valve The position of the valve is shown in the display 9 If necessary correct the valve position by turning the navigation wheel 11 Once the desired position of the valve has been established press button to calibrate the equipment The value is accepted and the flashing stops For the second calibration repeat items 5 to 10 and finish the input by pressing button ES C 12 After the calibration procedure the current position of the control valve will be indicated in the display Note For more information on the CANopen actuator see chapter Glossary on page 44 33 Menu Control continued Control parameters Concerning Conductivity control LRG 1x 4x and LRR 1 40 1 To set the individual parameters press button CP The activated item is shown in the symbol bar 2 To set the desired parameter turn the naviga tion wheel and confirm the input by pressing the navigation wheel The background of the selected item is flashing 3 Turn the navigation wheel until the new value is reached Alternatively you can use button to increase the value proportionally or use button to decrease the value Press the navigation wheel to confirm the selection The flashing stops Device name Status report
14. ariable pressures When the compensation is switched OFF the absolute conductivity will be indicated 45 Glossary continued Cell constant conductivity control The cell constant is a geometric quantity characteristic of the level electrode and is taken into account when calculating the conductivity However in the course of time this constant may chance e g due to dirt deposits accumulated on the measuring electrode If a reference measurement yields a result that differs from the indicated conductivity value check the temperature compensation first Only if the the temperature coeffienct setting is no longer sufficient for a correct compensation should you modify the cell constant In this case change the cell constant until the reading and the indicated conductivity agree 24 hour purging pulse conductivity control To prevent blocking of the continuous blowdown valve a purging pulse is triggered when the mains voltage is switched on The continuous blowdown valve is actuated and opens for 2 minutes After this period the valve is motored into the CLOSED position where it remains for 2 minutes Then the valve is motored into the OPERATING position or into the required control position This process is repeated every 24 hours During stand by operation the time interval continues without triggering off the purging pulse Note that during the purging process the MIN limit is not active The 24 hour purging pulse can be switched ON or O
15. ce pressure is reached use a calibrated conductivity meter to measure the conductivity of the boiler water and compare the reading with the indicated conductivity value If the reading differs from the indicated conductivity change the TK setting until they tally TK Norm Since conductivity is not a linear function of temperature over a larger temperature range various conditioning agents and different basic conductivities were used in order to ascertain empirical conductivity temperature curves These curves are stored as standard curves and can be used for temperature compensation TK NORM is suitable for boilers operating with variable pressure which means that the boiler does not have a fixed working pressure e g low load 10 bar full load 15 bar TK Auto For this method a characteristic conductivity temperature curve of the plant Auto curve is used for temperature compensation However first a charateristic Auto curve must be recorded For this purpose turn the navigation wheel at TK AUTO to start and then press the navigation wheel in order to start recording the curve Apply the max service pressure to the steam boiler During the heating process every 100 C above 10 C temperature and conductivity values are recorded and the current temperature is indicated After having recorded 25 values or if STOP is selected the equipment stops recording and saves the Auto curve TK AUTO is suitable for steam boilers operating with v
16. e July 2005 Operational In the menu System configuraton you can either select Steam boiler or Hot water boiler as start window 1 To select the basic settings press the navigation wheel The selection of the menus will be indicated Home Control Limiter Home Control Limiter Level Conductivity ESI 0 0 Pe SU Limiter STB 1 Limiter STB 2 000 C MAX 000 C Temperature LRG 000 C ACT 000 C ACT t C A us line Return line Temperate TRV 000 C MIN 000 C ACT D C ACT 000 C ff ACT 000 C de 2 o d 2 To select a menu turn the navigation wheel Control Limiter and then press it to confirm the selection E To choose another language select menu item Language Bi f you want to update the node IDs of the connected equipment or to activate equipment for viewing select the menu item System configu ration Wi To update the baud rate select the menu item Baud rate Ii To change the properties of the display select the menu item Brightness Language System configuration Baud rate Brightness About URB 2 Service menu Wi To view information on the equipment select menu item About URB 2 Wi To disable equipment settings or to carry out the key test select the menu item Service menu 20 Menu Start continued Language 1 To set the parameters press button CP Language The activated item is highlighted in the symbol bar Th
17. e background of the selected item is flashing Used language 2 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation on German wheel The flashing stops jii new System configuration The URB 2 is delivered with GESTRA s factory settings Check that the node ID settings of the connected equipment agree with the factory settings for more information see the installation manuals of the respective devices 1 Turn the navigation wheel to select the equipment group controller limiter etc to be configured 2 To set the individual parameters press button CP The activated item is shown in the symbol bar 3 Turn the navigation wheel to the desired parameter and confirm the selection by pressing the navigation wheel The background of the selected item is flashing oe aul mmm 127 OFF 4 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation wheel The flashing stops LP U ESC 5 To obtain more available elements repeat items 3 and 4 and press button ESO System configuration Control 2 Sinig Others NRS 1 40 001 OFF NRS 1 41 006 OFF NRS 1 40 1 001 ON NRS 1 40 2 006 OFF TM 127 OFF The window Others shows the following parameters B Node ID of the URB 2 E Functional selection Steam boiler or Hot water System configuration Control 2 Limiter Others URB 060 boiler Indicated on ho
18. ected via the start window and neither a button nor the naviation wheel is then actuated the operating amp display unit URB 2 will automatically return to the start window after 5 minutes The time out function is not effective during manual operation or in the parameteriza tion mode The help function in the various operating levels offers additional information on how to operate the equipment Technical Data URB 2 Input output CAN bus interface with power supply 18 36 V DC short circuit protected Data exchange CAN bus to ISO 11898 CANopen protocol Indicators and adjustors 1 Graphics display resolution 320 x 240 pixels illuminated 4 Buttons 1 Rotary switch with integrated push button navigation wheel Wiring 2 Connector sockets M12 with 5 poles A coded Power consumption 5 2 VA Protection Front panel IP 54 to EN 60529 Back IP 10 to EN 60529 Admissible ambient temperature 0 55 C Body material Front panel Ultramid A3K Body Thin sheet DCO1 A surface yellow chromized Weight approx 1 1 kg Name plate marking Betriebsanleitung beachten Disposal Equipment See installation instructions BUE designation Voir instructions de montage Characteristics IN OUT CAN Bus_18 36VDC_ IP 54 IP10 Tamb 55 c 131 F Protection Output electr Temp rating Ger tesoftware 311131 XX Software version Firmware 311132 XX CE marking GESTRA AG M nchener Stra e 77 D
19. etween bus devices the fault s system m of the system e g NARS e g NAS Cut off power supply and NRG and NRG to the equipment 40 System malfunctions continued Restart 1 Press the navigation wheel to restart the system 2 After the restart the start window will be displayed FLOWSE RVE GESTRA Ww Device URB2 Version 311 131 xx Date August 2005 Preoperational Note All values indicated by the URB 2 will be updated within 2 minutes AN Attention If it is not possible to restart the system automatically interrupt the voltage supply unplug the connecting socket After approx 5 minutes re commission the URB 2 in accordance with the installation instructions 41 System malfunctions continued Status messages Control TRV TRS NRS NRG NRS NRR NRG LRR LRG 5 40 5 40 1 42 16 42 2 40 2 40 26 40 1 40 1x 4x No communication X X X X X X X X X Collective bit channel 1 and 2 X T MAX exceeded X X X X X X X X X Plausibility error X X Electrode lost X X X X Electrode defective PT 1000 defective Sensor defective A D converter MS TRV NRS NRG Blowdown control valve EF 1 40 URZ 40 E 5 40 1 4x 1x 4x 230V not available X Faulty communication X Calibration error X No communication X X X Temperature error X Collective bit 7 i x Potentiomete
20. he flashing stops To obtain more available elements repeat items 2 and 3 and press button ESO aD Note The adjustment range of the respective switchpoint is limited by the switchpoints above and below it as well as 0 and 100 For more information on the proportional range X capacitance level control refer to chapter Glossary on page 44 Switchpoints actual value output 4 20 mA Concerning Device name W Temperature control TRV 5 40 and TRS 5 40 Status report Switchpoints elute ey 1 To set the individual parameters press button Bice Ta The activated item is shown in the symbol Temperature AmA Joose Temperature 20mA 000 C 2 To set the desired parameter turn the naviga tion wheel and confirm the input by pressing the Channel 2 navigation wheel The background of the selected Temperature 4mA 000 C item is flashing Temperature 20mA 000 C 3 To enter a new value turn the navigation wheel I and confirm the input by pressing the navigation Le U ESC wheel The flashing stops 4 To obtain more available elements repeat items 2 and 3 and press button ES C Note The adjustment range of the respective switchpoint is limited above or below by the adjacent switchpoints for 0 C and 650 C temperature 31 Menu Control continued Switching times Concerning Device name B Level control NRG 16 42 and NRS 1 42 Level vontrol NRG 26 40 NRS 2 40 and NRR 2
21. icit S Doce Issued eo Enero aeu asia a a antec Menu Start Stant 010 0 ee c E Start ne Language System configuration Baud rate Briglitrigss e eee reri E ee AOUT URB Service menu Service Lock URB Service Unlock URB Menu Control AU QlariGO iicet or ere ERU DTREOITURTIII E EU T Ir GE IRIS CER RUN Te REU E Control Overview Status report Sensitivity Measuring range SWITCHPOINISS e Switchpoints proportional range nennen nnne nnns Switchpoints actual value output 4 20 mA Switching times nee Control valve Control parameters Temperature seen Continuous blowdown valve MIN COMTMUOUS DIQWOOW Contents continued Menu Limiter PINE casas escort a perire E re eei en EPIS DEDE A EFE E CIE SERE GT CE EXT MADE Y TUA EIN RES Vote Control unit Attention T a StATUS MOSSAGES T i d n Decommissioning Annex Declaration of Conformity GIOSSANY POPE EE Important Notes Usage for the intended purpose The operating amp display unit URB 2 may only be used in conj
22. igh speed data exchange The CAN address node ID can be set between 1 and 123 The operating and display unit URB 2 has already been configured at our works for operation with other GESTRA components and can be used straight away without having to set the node ID Factory setting Operating amp Display Unit URB 2 The operating and display unit URB 2 features the following factory set default values E Node ID 60 Bi Baud rate 250 kBit s 125 m cable length Establishing changing node ID If several identical systems are to communicate in a CAN bus network allocate a different node ID for each system e g limiter controller etc In most cases it is sufficient to commission the equipment with the default factory settings Please observe the pertinent installation instructions 14 Basic Settings continued Node ID Water level limiter NRS 1 40 NRG 16 40 1 NRG 16 40 2 Reserved Reserved X X 1 X 2 X43 X 4 1 2 3 Factory setting Safety system for steam boilers with superheater NRS 1 40 1 NRG 16 40 1 NRG 16 40 2 TRV 5 40 Limiter 4 X X41 X42 X43 X 4 1 2 3 4 Factory setting Safety system e g hot water generating units NRS 1 40 1 NRG 16 40 1 NRG 16 40 2 Limiter 3 Limiter 4 X X 1 X 2 X 3 X 4 1 2 Factory setting Safety system e g hot water generating units
23. iler blowdown if activated can be de activated during stand by operation or when the burner is switched off An external control command will be triggered and as a result the continuous blow down valve will be closed During stand by operation the MIN MAX limits and the monitoring function remain active After the equipment switches back to normal operation the continuous blowdown valve is motored into the OPERATING postion or the control position In addition an intermittent blowdown pulse is triggered off provided that automatic intermittent boiler blowdown has been activated and an interval period and pulse duration have been set Temperature compensation conductivity control The electrical conductivity changes as the temperature falls or rises To obtain meaningful readings it is therefore necessary that the measurements are based on the reference temperature of 25 C and that the measured conductivity values are corrected by the temperature coefficient factor Tk For automatic temperature compensation the following three settings are available TK Linear TK Norm or TK Auto TK Linear To ensure that the readings are based on 25 C set the TK value between 0 and 3 0 C default setting 2 1 C This setting permits the linear temperature compensation of the measured value over the whole measuring range This method is usually applied for steam boilers operating at constant service pressure After the TK is set and the servi
24. ineer Academically qualified engineer Head of Design Dept Quality Assurance Manager 43 Glossary Continuous boilder blowdown top blowdown As the boiler water evaporates the concentration of non volatile dissolved solids TDS left behind in the boiler increases over time as a function of steam consumption If the TDS total dissolved solids concentration exceeds the limit defined by the boiler manufacturer foaming and priming occurs as the density of the boiler water increases resulting in a carry over of solids with vapor into steam lines and superheaters As a result the operational safety is impaired and the steam boiler and or pipelines can be damaged To keep the TDS concentration within admissible limits a certain portion of boiler water must be removed continuously or periodically oy means of a blowdown valve and fresh make up water must be added to the boiler feed to compensate for the water lost through blowdown Intermittent boiler blowdown bottom blowdown During the evaporation process fine sludge deposits settle on heating surfaces and in the lowest part of the steam boiler The accumulated sludge sediments form a thermally insulating layer and can damage the boiler walls due to excessive heat The resulting suction effect occurs only at the moment when the valve is being opened the opening time should therefore not exceed 2 seconds The timed pulse interval control of the intermittent blowdown valve optimises sludge re
25. l node IDs set correctly Do not use a node ID twice Baud rate Is the length of the cable in accordance with the adjusted baud rate The URB 2 gives an acoustic signal if the baud rate setting is incorrect Is the baud rate the same for all devices AN Attention For more information on system malfunctions refer to the installation manuals of the connected equipment 39 System malfunctions continued Systematic malfunction analysis The sources of malfunctions occuring in CAN bus systems operating with several bus based stations must be analysed systematically since faulty components or incorrect settings can give rise to nega tive interactions with intact bus devices in the CAN bus system These unwanted interactions can cause error messages in fully functional bus devices which will make fault detection even more difficult We recommend the following systematic fault finding procedure Step 1 Start Detach terminal strips in all bus based sensors Level electrode Conductivity electrode Pressure sensor Temperature sensor etc Check Step 2 Use fault finding list to Plug in terminal strip correct the fault s of the sensor of the system Final test e g NRS Check next system Have all faults been and alimninated NRG electrodes System fault Step 3 System 0 K Use fault finding Apply mains voltage Detach terminal strips list to identify to bus devices of the b
26. me page Node ID and de activation of the safety temperature Function Steam boiler limiter to be displayed TRV STB 1 127 OFF If Steam boiler is selected for the start window only TRV STB 2 127 OFF the first safety temperature limiter can be displayed If Hot water boiler is selected as start window two safety temperature limiters can be displayed 2 e O ESC 21 Menu Start continued Baud rate 1 Check the baud rate of the connected equipment Baud rate If necessary adapt the baud rate of the URB 2 to the baud rate setting of the CAN bus 2 To set the parameter press button C P The activated item is shown in the symbol bar old 250kBd The background of the selected item is flashing 3 To enter a new value turn the navigation wheel and new confirm the input by pressing the navigation wheel The flashing stops Note Make sure that all bus nodes feature the same baud rate settings If a baud rate setting is incorrect an acoustic signal will be given Brightness 1 To set the individual parameters press button CP The activated item is shown in the symbol bar 2 To set the desired parameter turn the navigation Background illumination ae MIN Max wheel and confirm the input by pressing the navigation wheel The background of the selected Contrast of the scree item is flashing MN E 3 To enter a new value turn the navigation wheel and confirm the input by pres
27. moval while minimising loss of boiler water The interval between the intermittent blowdown pulses cen be set between 1 and 120 h intermittent blowdown interval The duration of the intermittent blowdown can be set between 1 and 60 s For larger boilers it may be necessary to repeat the intermittent blowdown pulses The intermittent blowdown pulses can be repeated up to 5 times within 5 30 seconds pulse interval Sensitivity conductivity level control The level electrode NRG 16 42 works only when used in water with a minimum electrical conductivity If the electrical conductivity of the boiler water is lt 10 uS cm at 25 C set the sensitivity to 0 5 pS cm Operating position of the continuous blowdown valve It is common pratice to use the continuous blowdown valve to remove water from the boiler in order to keep the TDS level within certain predefined limits This means that the valve must be permanently open so that a steady flow of water is ensured the valve is in the operating position The operating position is adjustable between 0 and 25 For the corresponding amount of boiler blowdown refer to the capacity charts of the continuous blowdown valve CANopen actuator The continuous blowdown valve and or the control valve is equipped with a CANopen actuator See installation manual EF 1 40 URZ 40 Attenuation conductivity control The presence of steam bubbles can lead to greatly fluctuating conductivity readings An attenuator
28. nection continue AN Attention i Wire equipment in series Star type wiring is not permitted m Make sure that the bus line is separated from mains and signal lines B Link screens of control cables such that electrical continuity is ensured and connect them once to the central earthing point CEP If equipotential bonding currents are to be expected for instance in outdoor installations make sure that the screen is separated from the central earthing point CEP Wi f 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 terminal C Cy We recommend that you configure the URB 2 as first or last device and use the supplied connecting socket equipped with a terminating resistor for terminating the bus line Bi Note that only one operating and display unit URB 2 may be used per CAN bus network Bi The CAN bus network must not be interrupted during operation Note that an interruption will cause an alarm Ii The operating and display unit URB 2 must not be applied together with the operating display amp automatic control device SPECTORcontrol Basic Settings Bus cable All level conductivity and temperature controllers and associated electrodes are interconnected by means of a CAN bus using the CANopen protocol All devices have an electronic address the node ID The four core bus cable serves as power supply and data highway for h
29. ntrollers NRR 2 40 and LRR 1 40 manually press button Hand The activated item is shown in the symbol bar 2 Turn the navigation wheel to the left or to the right to OPEN or CLOSE the valve The opening degree of the valve is indicated and the symbol OPEN or CLOSED is flashing 3 Press the navigation wheel to stop the valve The flashing of the symbol stops 4 Press button to open the input window Here you can choose whether the manual operation shall be deactivated and the system returns to normal operation or whether the manual operation shall be continued If manual operation is selected the symbol Hand is shown in the display GD Note NRS 2 40 Status report Measuring range 045 96 1 080 2 060 3 040 4 020 U ESC NRR 2 40 Overview e Status report Measuring range Eu am 4 1 080 i 020 045 a 050 XW 05 w 050 4020 aX 2 O Esq LRR 1 40 Status report Control param HHHHH uS cm BE MAX 6000 0 24h rinsing W 50000 MIN 4000 0 x 000 x VOp 000 O 6 Esc When the conductivity control is switched off during stand by operation of the boiler plant an optical signal is shown in the display The Min Max limits and the monitoring functions of the equipment remain active For more information on stand by operation conductivity control see chapter Glossary
30. on page 44 27 Menu Control continued Overview continued Concerning B Temperature control TRV 5 40 and TRS 5 40 Status report Concerning W Level control NRG 16 42 and NRS 1 42 Level control NRG 26 40 NRS 2 40 NRR 2 40 and URZ 40 Conductivity control LRG 1x 4x LRR 1 40 and EF 1 40 W Temperature control TRV 5 40 and TRS 5 40 status message for channel 1 and 2 The menu Status Report shows the current parameters of the equipment Note TRS 5 40 Temperature switch Switchpoints Channel 1 000 C Alarm 000 C Channel 2 000 C Control MAX 000 C Control MIN 000 C Alarm 000 C U ESC Device name Control unit Device name SW version Status Device name SW version Status U Device name Overview Valve Device name SW version Status messages For a full list of all status messages refer to chapter Status messages Control see page 42 28 Menu Control continued Sensitivity Concerning W Level control NRG 16 42 and NRS 1 42 Status report QRS 1 To set the parameters press P The activated item is shown in the symbol bar Device name 2 Turn the navigation wheel until the desired value is reached The background of the selected item is flashing 10 uS cm Press the navigation wheel to confirm the selection The flashing stops O ESC Note For m
31. ontrol see chapter Glossary on page 44 34 Menu Control continued Continuous blowdown valve Concerning Device name 1 c1 oO ON DD 11 12 13 14 15 16 Conductivity control LRG 1x 4x and LRR 1 40 Temperature FERRE EI MiN Blowdovn To set the individual parameters press button CP The activated item is shown in the symbol z x bar To select the CANopen actuator turn the naviga 0 100 tion wheel and confirm the input by pressing Operating position 000 the navigation wheel The background of the 24h rinsing OFF selected item is flashing CANopen actuator NO Turn the navigation wheel to select YES if the continuous blowdown valve is fitted with a P CANopen actuator or NO if it is equipped with another type of actuator Press the navigation wheel The flashing stops To calibrate the continuous blowdown valve turn the navigation wheel to the the first value to be adjusted Press the navigation wheel The background of the selected item is flashing Turn the navigation wheel to the left or to the right The valve closes or opens Press the navigation wheel to stop the valve The position of the valve is shown in the display If necessary correct the valve position by turning the navigation wheel Once the desired position of the valve has been established press button to calibrate the equipment The value is accepted and the flashing s
32. ore information on the sensitivity conductivity level control see chapter Glossary on page 44 Measuring range Concerning Device name W Level control NRG 26 40 NRS 2 40 and NRR 2 40 status report Meas range To calibrate the system you should use both values Calibration 0 and 100 of the liquid level EEEE Alternatively you can also calibrate the system using 0 and a defined value e g 50 of the liquid level In this case the value 0 must be calibrated first _ ee 1 To calibrate the first parameter press button CP The activated item is shown in the symbol bar 0 2 For the first calibration turn the navigation wheel Pj Oo ESC to 0 liquid level and press the navigation wheel The background of the selected item is flashing 3 Press the navigation wheel to confirm the selection The flashing stops 4 Use the navigation wheel to select 100 liquid level or the freely adjustable liquid level and press the navigation wheel The background of the selected item is flashing 5 When calibrating 100 press the navigation wheel to confirm If a value below 100 liquid level is used for calibration select the desired value by using the navigation wheel and press the navigation wheel to confirm your selection The flashing stops 29 Menu Conirol continued Switchpoints Concerning Device name W Level control NRG 26 40 and NRS 2 40 Switchpoints Concerning B
33. pment that raised the alarm is flashing The display field changes its appearance according to the indicated menu The symbol bar shows the available functions of the activated menu The operating bar consists of four pushbuttons and a navigation wheel The symbol bar indicates the functions assigned to the pushbuttons and the control of the navigation wheel AN Attention Do not press several pushbuttons at the same time or when using the navigation wheel Incorrect data input may occur To ensure correct entries press the respective pushbutton or use the navigation wheel for one second 16 Operation continued Menus The start window in the display shows all possible indications and readings Note that the system configuration determines what is actually indicated Level controller NRR 2 40 manual operation level 45 Conductivity controller LRR 1 40 manual operation Conductivity controller LRR 1 40 stand by operation Conductivity MAX limit setting 6000 uiS cm Conductivity Actual value setting 4800 uS cm Temperature MAX limit setting 300 C Temperature Actual value 150 C Both indications at the same time are not possible during operation 1 Turn the navigation wheel to the left or to the right in order to select a menu The selected menu is highlighted in the title bar and the overview display of the menu is indicated 2 To call up the selected menu press the navigation wheel 3 Turn the na
34. r error X self checking routine Actuator blocked X T MAX exceeded X X End position plausibility X Time Out valve can no longer X receive control telegrams Note The system message T MAX exceeded is given when the ambient temperature is excessively high Note that the temperature of the boiler is not monitored If faults occur that are not listed above or cannot be corrected please contact our service centre or authorized agency in your country 42 Decommissioning URB 2 First cut off power supply to the operating and visual display unit URB 2 and then remove the connecting socket De install the operating and display unit Disposal Dismantle the operating and display unit and separate the waste materials using the specifications in the table Materials as a reference Electronic component parts such as the circuit board must be disposed of separately For the disposal of the control unit observe the pertinent legal regulations concerning waste disposal Annex Declaration of Conformity C We hereby declare that the operating and display unit URB 2 conforms to the following European guidelines Ii Low Voltage Directive 2006 95 EC I EMC Directive 2004 108 EC This declaration is no longer valid if modifications are made to the equipment without consultation with us Bremen 6th July 2007 GESTRA AG P EU b Bebeta D Dipl Ing Uwe Bledschun Dipl Ing Lars Bohl Academically qualified eng
35. rd is invalid enter the correct pass 1 2 OK 3 4 word or cancel the operation To enter the correct password repeat items 1 and 2 Note that the equipment remains disabled if the operation is Service Unlock URB cancelled Locked Password is valid Status Unlocked Password Service Unlock URB Locked 000 Password is invalid Try again Yes OK No ESC Password Note After entering three incorrect passwords the equipment will interrupt the input function for 3 minutes 24 Menu Start continued Service Key test 1 To check the function of the keys press and hold Service Key check down for some time one key after the other While the key is being pressed down the respective button will be highlighted in the display 2 When the key is released the display goes back to the previous mode Oo 3 To check the function of the navigation wheel turn it slowly to the left and to the right Each time an item is activated the snapping in place is slightly perceptible the symbol in the 1 2 OK 3 4 display changes its colour 4 Press the navigation wheel to go to the start menu and finish the key test Press any key Menu Control At a glance TRV 5 40 NRG 16 42 NRG 26 40 NRG 26 40 LRG 1x 4x Page TRS 5 40 NRS1 42 NRS2 40 NRR2 40 LR
36. s refer to chapter Status messages Limiter see page 39 Limiter Bx 1 e 38 To switch the display on or off press button CP Button G2 in the symbol bar is highlighted The background of ON or OFF is flashing Turn the navigation wheel to ON or OFF Press the navigation wheel the flashigh will stop The display is switched on or off Limiters that are switched on are shown in the list Limiters Note Device name Control unit Limiter L1 Limiter L2 Limiter L1 OFF Device name SW version Alarm Status messages To ensure a quick search for malfunctions we recommend that all available limiters are switched ON Should a malfunction occur check the plausibility of the system configuration System Malfunctions Causes Malfunctions occur if CAN bus components have been mounted or configured incorrectly or if elec tronic component parts are defective or in the event of excessive heat in the equipment or electrical interference in the supply system Further malfunctions are Faulty communication in CAN bus system W 24V PSU in control unit overloaded Note Before carrying out the systematic fault finding procedure please check Wiring Is the wiring in accordance with the wiring diagrams Is the polarity correct throughout the whole bus line Is the bus line of each of the end nodes provided with a 120 terminating resistor Node ID Are al
37. s selection by pressing the navigation wheel To make larger modifications of the entered data more quickly use keys and for a fairly rough selection Then use these keys or the navigation wheel for the subsequent fine tuning To activate the manual mode of the individual devices use button _ The equipment will be con trolled only by the operating and display unit URB 2 unless it is deactivated The manual mode is indicated in the indicating bar of the start menu by the symbol The activation or deactivation of the password protection is indicated in the symbol bar of the start window by or mf Button has several functions When the parameterisation mode is active it can be used to cancel the current modifications and to go back to the original setting Furthermore it closes the active sub menu and opens the master menu To return to the start menu press button several times Specification of the symbol bar Key Designation Function Help Displaying help text OK Quitting the help menu Confirming the input P Parameter setting Parameter setting highlighted when activated Turning the navigation wheel QD Navigation wheel Suiting between parameter Changing parameters Turning and pressing the navigation wheel In master level Calling up the menu 5 Navigation wheel In general Confirmation Switching between parameters Changing parameters 18 Operation continued Specification of
38. sing the navigation wheel The flashing stops 4 To obtain more available elements repeat items 2 and 3 and press button ESO Brightness Ie 22 Menu Start continued About URB 2 To view information on the equipment select menu item About URB 2 Service menu Wi To disable the key functions select the menu item Lock URB Wi To enable the function of the keys select the menu item Unlock URB W To check the functions of the keys select the menu Key check Service Lock URB To disable the equipment press the navigation wheel The symbol Equipment disabled appears in the symbol bar of the start menu About URB 2 FLOWSERVE GESTRA Ww Device URB2 Version 311 131 xx Date July 2005 Control Limiter Lock URB Unlock URB Key check Service Lock URB Unlocked Lock URB now Yes OK No ESC 23 Menu Start continued Service Unlock URB 1 To enable the functions of the keys enter your Service Unlock URB password and press the navigation wheel The message whether the password is valid or Locked 000 invalid will be indicated The password is supplied separately Wrong input 00 2 If the password is valid press the navigation wheel Waiting time 00 03 minutes to confirm the entry The symbol mf Equipment enabled appears in the symbol bar of the start Password menu 3 If the passwo
39. t items 2 and 3 and press button ESO Note Device name Temperature Blowdown valve DU sl fefe e nin Relay 4 MIN alarm Blowdown interval 001h Blowdown time 03s Blowdown pulse 02 Pulse interval 05s O ESC For more information on Continous Blowdown see chapter Glossary on page 44 36 Menu Limiter Limiter The monitored equipment together with their con he mc mer l i Home Control figuration status are indicated in the display 1 To select the equipment press the navigation wheel The selection of the menus will be indicated NRS 1 40 ON B1 B2 NRS 1 41 ON B1 NRS 1 40 1 ON B1 B2 B3 B4 NRS 1 40 2 ON B5 B6 B7 B8 2 To select the desired limiter turn the navigation wheel and then press it to confirm the selection Device name Note The control units NRS 1 40 and NRS 1 40 1 must not be used together in one CAN bus system 37 Menu Limiter continued Control unit 1 To switch the display on or off press button P Button in the symbol bar is highlighted The background of ON or OFF is flashing Turn the navigation wheel to ON or OFF Press the navigation wheel the flashigh will stop The display is switched on or off Note Device name Control unit Limiter L1 Control unit Device name SW version Alarm Limiter L2 Status message No errors For a full list of all status message
40. tops For the second calibration repeat items 5 to 10 and finish the input by pressing button ES C After the calibration procedure the current position of the continuous blowdown valve will be indicated in the display To set further parameters press button CP The activated item is highlighted in the symbol bar To set the desired parameter turn the navigation wheel and confirm the input by pressing the navigation wheel The background of the selected item is flashing To enter a new value turn the navigation wheel and confirm the selection by pressing the naviga tion wheel The flashing stops To obtain more available elements repeat items 13 to 15 or finish the input by pressing button ESO GD Note For more information on the operating position of the continuous blowdown valve 24 hour purging pulse conductivity control and CANopen actuator see chapter Glossary on page 44 35 Menu Control continued MIN Blowdown Concerning Conductivity control LRG 1x 4x and LRR 1 40 1 To set the individual parameters press button CPP The activated item is shown in the symbol bar 2 To set the desired parameter turn the naviga tion wheel and confirm the input by pressing the navigation wheel The background of the selected item is flashing 3 To enter a new value turn the navigation wheel and confirm the input by pressing the navigation wheel The flashing stops 4 To obtain more available elements repea
41. unction with GESTRA CAN bus devices Any type of use differing from the usage described above must be considered as improper The result ing risk will have to be borne by the user alone The manufacturer hereby expressly rejects any claims for any damage resulting from improper usage 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 Attention The name plate specifies the technical features of the equipment Note that any item of equipment without its specific name plate must neither be commissioned nor operated ATEX Atmosph re Explosible According to the European Directive 94 9 EC the equipment must not be used in explosion risk areas Explanatory Notes Scope of supply URB 2 1 Operating amp display unit URB 2 1 Connector socket M 12 with 5 poles A coded 1 Connector socket M12 with 5 poles A coded with terminating resistor 120 Q 1 Installation manual 1 Sticker with password Description The URB 2 is an operating amp display unit for all GESTRA CAN bus devices that uses the CANopen protocol to register all the data telegrams coming from the sensors control units and actuators that are provided by the CAN bus The following readings parameters and settings can be displayed and with the exception
42. vigation wheel to select the value to be adjusted or the equipment The selected item is highlighted 4 Press the navigation wheel to call up the menu of the parameter or the equipment The selected menu will be displayed 5 Only applicable for the menu Control To select more devices repeat items 3 and 4 E To quit the active menu press button Home Level 45 Control Limiter m Conductivity MAX 6000 ACT 4800 wuS cm Temperature LRG ACT 150 C Temperature TRV MAX 300 ACT 150 C o P Control NRG 16 42 Level ON NRG 26 40 Level ON LRG 1x 4x Conductivity ON TRV 5 40 Temperature Control Limiter Choice 17 Operation continued Specification of keys and navigation wheel The functions allocated to the keys and the navigation wheel of the operating and display unit URB 2 depend on the activated menu The allocation is shown in the symbol bar Press button to view the associated help text in a separate menu window Press button to confirm the parameter settings To confirm the parameter setting of values or devices press button CP for approx 1 second If only one value can be changed in the menu the indicator in the parameterisation mode will go directly to the value that can be adjusted Turn the navigation wheel to the left or to the right to select menus devices or parameter settings In addition if the symbol is shown you can confirm thi
43. will damp the oscillations in the measurements Measuring range conductivity control The measuring range setting establishes the actual value output 4 20 mA of the control equipment LRR 1 40 Proportional band X conductivity control If the controller is to work as a proportional controller the proportional band can be set between 1 and 150 It refers to the adjusted setpoint w If Xp 0 is set the controller is configured as two position controller Proportional band X capacitance level control Switchpoint 2 marks the upper limit and switchpoint 3 the lower limit of the proportional band The difference between switchpoint 2 and switchpoint 3 gives the magnitude of the proportional range Xp 44 Glossary continued Switching hysteresis Hyst conductivity control If Xp 0 is set the controller is configured as 2 position controller which means that the valve will open if there is a positive deviation X gt w The conductivity must then decrease until a new value that is lower than the setpoint minus the adjusted hysteresis is reached Once this value is reached the valve will be motored into the operating position Switching times conductivity and capacitance level control For each of the four output relays individual time delays for energizing and de energizing can be set Stand by mode conductivity control To avoid loss of water the continuous blowdown control and the programme controllerd intermittent bo
44. x0 5 OFF OFF ON 100 kBit s 335m 2x2x0 75 ON OFF ON 50 kBit s 500 m OFF ON ON 20 kBit s 1000 m on request depending on bus configuration ON ON ON 10 kBit s 1000 m Gib Note W The max baud rates and cable lengths indicated above are based on empirical values obtained by GESTRA In certain cases it may be necessary to reduce the baud rate in order to ensure operational safety E The type and design of the data cable has a strong influence on the electromagnetic compatibility EMC of the equipment Take special care when connecting the equip ment W f you do not use the control cable assemblies connect the connectors and jacks for the control cables as indicated in the assignment diagram for sensor plug in unions UNITRONIC is a registered trademark of LAPP Kabelwerke GmbH Stuttgart 11 Electrical Connection continued CAN bus voltage supply To ensure the troublefree operation of the CAN bus system make sure that the voltage supply for all bus devices is sufficient Please use the following table to check the voltage supply of your bus system Control units with Qty X Power output per item Sum voltage supply X 6W W Please enter data Sum 1 W Sensor transmitter control Qty X Power consumption per item sum units operating amp display unit URB 1 X 3 W W Operating amp display unit _ URB 2 X 5W Ww Please enter data Sum 2 W
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