1URB 2Installation Instructions 81860100Operating & display unit URB 2GESTRA Steam Systems
10Functional Elements – continued –URB 2 – continued –Fig. 4B CD1 Pushbutton2 Navigation wheel3 Illuminated LCD display, resolution 320 x 240 pix
11WiringBus cable, cable length and sizeTo connect the equipment use the supplied M12 connecting sockets.Note that screened multi-cored twisted-pair c
12Wiring – continued –Wiring diagram for CAN bus system – example –Attention Wire equipment in series. Star-type wiring is not permitted! Connect
13OperationOperator interfaceThe operating and display unit URB 2 shows parameters, operating conditions and other operating data. The menus can be se
14Operation – continued –MenusThe start window in the display shows all possible indications and readings. Note that the system configuration determin
15Operation – continued –Specification of keys and navigation wheelThe functions allocated to the keys and the navigation wheel of the operating and d
16Operation – continued –Specification of the symbol bar – continued –Key Designation Function Forward Proportional increase of values Backwa
17Menu StartStart logoThe start logo appears for approx. 2 minutes after restarting the equipment. During this period the parameters of the equipment
18Menu Start – continued –Language1. To set the parameter press button . The activated item is highlighted in the symbol bar. The background of the
19Baud rate250kBd125kBdold:new:Used baud rateBrightnessBackground illuminationMIN MAXContrast of the screenMIN MAXMenu Start – continued –Baud rate
2ContentsUsage for the intended purpose ...
20About URB 2Device: URB2Version: 311.131.xxDate:July2005Home Control LimiterService menuLock URB Unlock URB Key checkService – Lock URBLock URB now?
21Menu Start – continued –Service – Unlock URB 1. To enable the functions of the keys enter your password and press the navigation wheel. The messag
22Menu Start – continued –Service – Key check1. To check the function of the keys press (and hold down for some time) one key after the other. While
23Menu Control – continued –ControlFunctionNRG 16-42 - LevelNRG 26-40 - LevelLRG 1x-4x - ConductivityTRV 5-40 - TemperatureStatusONONONONHome Control
24NRS 2-40Overview Status report Measuring range045%1: 080 %2: 060 %3: 040 %4: 020 %LRR 1-40Overview Status reportControl param.µS/cm000%VOp.: 000 %MA
25TRS 5-40 - Temperature switchOverview Control SwitchpointsChannel 1:Alarm:Channel 2:Control MAX:Control MIN:Alarm:000 °C000 °C000 °C000 °C000 °C000
26Device nameStatus report Sensitivity Switching timesSensitivity0.5 µS/cm 10 µS/cmDevice nameStatus reportMeasuring rangeSwitchpointsCalibration
27Device nameMeasuring rangeSwitchpoints Switching times045%1: 080 %2: 060 %3: 040 %4: 020 %Device nameStatus report SwitchpointsOutput 4-20mAChannel
28Menu Control – continued –Switchpoints, proportional rangeNoteThe adjustment range of the respective switchpoint is limited by the switchpoints abo
29Menu Control – continued –Switching timesNoteFor more information on energising and deenergising times (conductivity and capacitance level contro
3Start logo ...
30Menu Control – continued –Control valveNoteFor more information on the CANopen actuator see chapter Glossary page 42.Concerning: Level control NR
31Menu Control – continued –Control param.NoteFor more information on continuous boiler blowdown, measuring range (conductivity control), proportiona
32Menu Control – continued –Blowdown valveNoteFor more information on the operating position of the continuous blowdown valve, 24hours purging pulse
33Menu Control – continued –MIN/BlowdownNoteFor more information on continuous boiler blowdown see chapter Glossary page 42.Concerning: Conductivit
34Menu LimiterLimiterNoteThe control units NRS 1-40 and NRS 1-40.1 must not be used in parallel in a CAN Bus system.The monitored equipment together w
35Menu Limiter – continued –Control unitNoteFor a list of all status messages for the equipment refer to chapter Status messages Limiter (see page 39
36MalfunctionsCausesNoteBefore carrying out the systematic fault finding procedure please check:Wiring: Is the wiring in accordance with the wiring dia
37Systematic fault finding procedure for system malfunctionsThe sources of malfunctions occurring in CAN bus systems operating with several bus-based s
38Malfunctions – continued –RestartNoteAll values indicated by the URB 2 will be updated within 2 minutes.1. Press the navigation wheel to restart t
39Malfunctions – continued –Status messagesNoteThe system message “T MAX exceeded” is given when the ambient temperature is excessively high. Note t
4CAN bus ...
40AnnexCAN busAll devices (level, conductivity, temperature) are interconnected via CAN bus. The CANopen protocol is used for the data exchange betwee
41 Declaration of ConformityAnnex – continued –We hereby declare that the operating and display unit URB 2 conforms to the following European guideli
42GlossaryContinuous boiler blowdown (“top blowdown”): As the boiler water evaporates, the concentration of non-volatile dissolved solids (TDS) left b
43Glossary – continued –Energizing times (conductivity and capacitance level control): For each of the four output relays individual time delays for
44Glossary – continued –Cell constant (conductivity control): The cell constant is a geometric quantity characteristic of the level electrode and is
45For your notes
46For your notes
47For your notes
48818601-00/806cm · 2005 GESTRA AG · Bremen · Printed in GermanyGreat BritainFlowserve Flow Control (UK) Ltd.Burrel Road, Haywards HeathWest Sussex RH
5Important NotesUsage for the intended purposeThe operating & display unit URB 2 may only be used in conjunction with GESTRA CAN bus devices.Any t
6Explanatory Notes – continued –System description – continued –Level Conductivity TemperatureActual value bar chart XActual value, numerical X X XM
7URB 2Technical DataInput/output CAN bus interface with power supply 18-36 V DC, short circuit protectedData exchange CAN bus to ISO11898, CANopen p
8DimensionsTechnical Data – continued –Fig. 2IP 54MAX 55 °CMAX 55 %E [mm]F [mm]174 145PUSH30max. 10EHome Control LimiterLevel45 % PressureMAXACT.
9InstallationURB 2Fig. 3Functional ElementsURB 2The operating and display unit URB 2 is designed for installation in control cabinets.1. Provide cut
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