WIKA A-RB-1, Operating Instructions Manual

Page 1: ...Operating Instructions Digital Indicator Model A RB 1 ...

Page 2: ...amming the indication Low end of scale High end of scale Decimal point Input signal Output signal Damping Reference for damping Baud rate setting 10 2 5 2 Verification of programmed settings 10 2 5 3 Compensation of zero offset 11 2 6 Model A RB 1 D with 2 alarms see also appendix B 11 2 6 1 Setting of alarm 1 14 2 6 2 Setting of alarm 2 14 2 6 3 Verification of set points of alarm 1 14 2 6 4 Veri...

Page 3: ...and parameters 22 4 2 Programming of parameters 23 5 Error messages 24 5 1 Error messages E1 E1 24 5 2 Error messages E2 E2 24 5 3 Error messages E3 E3 24 5 3 1 Error message E3 25 5 3 2 Error message E3 26 6 Preparing for installation 26 7 Environment 26 8 Setting of physical unit 26 9 Maintenance 27 10 Specifications 28 App A Schematic description of settings and data transmission 32 App B Schem...

Page 4: ...d persons should work on these instruments 1 General The digital indicators A RB 1 are precision instruments for the measure ment of current and voltage signals of pressure or other transmitters The instruments are normally DIN Size panel mounting 96 x 48 x 190 mm per IEC 61 554 Indication is made via a 3 1 2 digit LED display covering a range from 1999 to 1999 digits The actual span to be indicat...

Page 5: ...ory 2 2 MODE key H The MODE key is found at the right hand side next to the display indicated by REAL HOLD MIN and MAX Hitting changes the modes in consecutive order A red LED indicates the active mode 2 2 1 REAL mode h Indicates the current value measured 2 2 2 HOLD mode h Hold the value indicated at the very moment the key is pressed Measurement continues in the background meaning that the memor...

Page 6: ...ning that the memories of MIN and MAX as well as the alarm contacts continue to operate MAX discontinues upon further hitting of the MODE key Hitting of the RESET key erases the memory see 2 7 2 3 Set key descending value B Selects the next lower value or individual parameter during program ming 2 4 Set key ascending value C Selects the next higher value or individual parameter during program ming...

Page 7: ...e and keys Press PROG once more The new value will be memorised This is indicated by 3 dashes appearing for a few seconds The MAX LED extinguishes and dP appears standing for Decimal point Change the decimal point as desired by hitting the and keys Press PROG once more The new position of the decimal point will be memorised This is indicated by 3 dashes appearing for a few seconds after which InX ...

Page 8: ...he current setting of the damping is displayed The damping can be set within a range of 0 1 s 50 0 s The damping can be changed in 0 1 s steps using the and keys The damping is adapted from the behaviour of a capacitor After the set time t has passed approx 63 of the changed value is applied After 5 x t has passed approx 97 of the changed value is applied Press PROG once more The new damping value...

Page 9: ... new value will be memorised This is indicated by 3 dashes appearing for a few seconds With instruments not featuring the serial data interface programming is now complete and standard operating mode will be automatically selected With instruments featuring the serial data interface b appears After hitting the key once more the current setting of the Baud rate of the serial interface RS 232 is ind...

Page 10: ...owed by all current settings in consecutive order where A Low end of scale E High end of scale dP Decimal point InX Input signal OuX Output signal d Damping dxx Reference of damping b At digital interface baud rate setting Indication can be terminated at any time by hitting the RESET key see also 2 7 2 5 3 Compensation of zero offset Despite careful calibration the instrument may indicate a zero o...

Page 11: ...endix B Programming of alarm 1 is made by initially holding the SET 1 key pressed until SP1 Set point 1 disappears and the message SE Set point makE appears Press SET 1 once more The red LED in the upper left hand corner of the SET 1 key flashes and the corresponding value is displayed Change this value as desired by hitting the and keys Press SET 1 once more The new value will be memorised This i...

Page 12: ...ake and break points of the contact This must not be confused with any hysteresis across approach of the set points with rising and falling values This sort of mechanical delay is not apparent with a digital instrument Both values can be programmed without limitations as the case demands Setting both SE and SA at the same values will automati cally create HIGH ALARM function The LED s in the upper...

Page 13: ...ergised once the display value rises to 1000 It remains energised until the display value falls to 800 The left hand LED at the SET 1 key comes on at 1000 and is turned off at 800 b LOW ALARM make at 400 break at 500 The circuit relay is energised once the display value falls to 400 It remains energised until the display value rises to 500 The right hand LED at the SET 1 key comes on at 400 and is...

Page 14: ...set points of alarm 2 see also appendix B Verification of the alarm 2 contact is initiated by hitting key SET 2 otherwise fully identical to the verification of no 1 2 7 RESET key G The RESET key enables to erase memories exit programming mode exit verification mode 2 7 1 Erase data memory Hitting the RESET key while the instrument is operative erases the data memories as explained below When pres...

Page 15: ...y and can be terminated at any time by hitting the RESET key 3 Layout of back panel terminals see illustration of appendix D The back panel features the 15 pin plug J containing the terminals for power supply and both alarm contacts and the 9 pin plug K contain ing the terminals of input signal transmitter supply and analogue output Both racks are of the plug terminal type for ease of wiring Every...

Page 16: ...e fuse as indicated in the drawing A replacement of the fuse is not required 3 1 1 Opening the case Remember to disconnect the power supply prior to opening the enclosure First strip the terminal blocks from the digital indicator Then remove the retaining screw in the centre of the case back and loosen the electronic rack from the locking device by exerting a constant pressure on the 9 pin female ...

Page 17: ...10 3 2 Layout of 9 pin plug K Pin Designation 1 Uin Voltage signal input 2 Uin 3 Iin Current signal input 4 Iin 5 out Common minus of current and voltage output signal pins 8 and 9 6 24 V Transmitter supply 7 GND 8 Uout Analogue output signal voltage 9 Iout Analogue output signal current ...

Page 18: ... signal power supply power supply I in 3 I in 4 GND 7 24 V 6 terminal terminal 3 3 Wiring examples a 2 wire 4 20 mA transmitter signal Digital indicator Transmitter b 3 wire 0 20 mA transmitter signal Digital indicator Transmitter c 3 wire 0 10 V transmitter signal Digital indicator Transmitter d 4 wire 0 10 transmitter signal Digital indicator Transmitter ...

Page 19: ...ally equipped with a serial RS 232 data interface The interface transmits data measured as well as enabling programming of the instrument Data transmission and programming follows the same rule in principle Data reading requires a 5 byte command The instrument responds by acknowledging the command together with the respective data Programming requires a 5 byte command followed by a word of 1 to 6 ...

Page 20: ...ts of MIN memory incl 5 6 byte sign and decimal point RMINM 01 23 RMAXM Max value contents of MAX memory incl 5 6 byte sign and decimal point RMAXM 14 56 RST1E SE of alarm 1 starting point alarm 1 incl 5 6 byte sign and decimal point RST1E 10 00 RST1A SA of alarm 1 end point alarm 1 incl 5 6 byte sign and decimal point RST1A 09 50 RST2E SE of alarm 2 starting point alarm 2 incl 5 6 byte sign and d...

Page 21: ...6 00 RINPX 1 0 10 V input signal selected 2 0 20 mA 3 4 20 mA 5 1 byte RINPX3 ROUTX 1 0 10 V output signal selected 2 0 20 mA 3 4 20 mA 5 1 byte ROUTX3 RDAEM Damping set value of damping in seconds 5 4 byte RDAEM00 1 RDBEZ Damping reference set reference of damping 5 2 byte RDBEZ01 All commands transmitter to the instrument must terminate with CR Dec 13 All date received from the instrument will t...

Page 22: ...1E SE of alarm 1 set switch on value alarm 1 incl 5 6 byte sign and decimal point PST1E 10 00 PST1A SA of alarm 1 set switch off value alarm 1 incl 5 6 byte sign and decimal point PST1A 09 50 PST2E SE of alarm 2 set switch on value alarm 2 incl 5 6 byte sign and decimal point PST2E 08 00 PST2A SA of alarm 2 set switch off value alarm 2 incl 5 6 byte sign and decimal point PST2A 08 50 PSCLA Low sca...

Page 23: ...3 4 20 mA 5 1 byte POUTX3 PDAEM Damping set value in seconds for damping 5 4 byte PDAEM00 1 PDBEZ Damping reference set reference of damping 5 2 byte PDBEZ01 All commands transmitted to the instrument must terminate with CR Dec 13 The decimal point must be entered with both low end and high end scale values where the last value entered will determine the actual decimal point irrespective of this b...

Page 24: ... Set input signal Actual signal E1 0 10 V 10 9 V 0 20 mA 21 8 mA 4 20 mA 21 8 mA E1 0 10 V 0 9 V 0 20 mA 1 8 mA 4 20 mA 2 2 mA 5 2 Error messages E2 E2 E2 appears if the input value exceeds the corresponding indication of 1999 digits E2 appears if the input value exceeds the corresponding indication of 1999 digits 5 3 Error messages E3 E3 5 3 1 Error message E3 E3 will appear if the actual input s...

Page 25: ... 4 mA by more than 6 of the maximum signal value This is still within the capacity of the inbuilt A D converter see also 5 1 If the value to display is still within the capacity of the indicator the value and the respective error message will flash intermittently If the value exceeds 1999 E3 will be displayed permanently Below table indicates the actual values at which this error message will appe...

Page 26: ...re that there is sufficient ventilation 8 Setting of physical unit The instrument is supplied with a variety of labels to suit most commonly used units of pressure and temperature A number of blank labels may be used to indicate customised units The pocket I above the MODE key is intended to accept the unit label To insert the label pry the pocket open with a tipped instrument Take care not to loo...

Page 27: ... range Accuracy True value by means of digital control Contacts 1 potential free relay change over contact for each alarm contact Load AC 250 V 8 A with resistive load AC 250 V 1 A with cos ϕ 0 1 HOLD memory Displayed value is fix measurement and control of MIN and MAX values as well as alarm contacts goes on in the background MIN MAX memory Two separately working memories for MIN and MAX values I...

Page 28: ...ent low scale value is displayed and MIN LED flashs Adjust value using and keys low scale value is changing Press PROG appears indicating acceptance of new lower scale value E appears at display Press PROG current high scale value is displayed and MAX LED flashs Adjust value using and keys high scale value changes Press PROG appears indicating acceptance of new upper scale value dP appears and cur...

Page 29: ...djust value using and keys X index figure changes Press PROG appears indicating acceptance of new input signal OuX appears at display Adjust value using and keys X index figure changes Press PROG appears indicating acceptance of new output signal d appears at display Press PROG set value for damping in seconds appears Adjust value using and keys set time for damping is changed ...

Page 30: ...pears at display RS232 Press PROG set baud rate appears values in kBaud Adjust value using and keys stored value for the baud rate is changed Press PROG appears indicating acceptance of new baud rate Hitting RESET immediately terminates the programming mode at any time In this instance the instrument resumes REAL mode Only such changes that have been acknowledged by appearance of will become effec...

Page 31: ...e of key words and values presuming settings of Examples Scale expansion 0 6 00 bar Input signal 4 20 mA Signal output 0 10 V Damping 1 0 s Reference of damping Display Baud rate 9600 baud Initial status REAL mode Press PROG shortly Pro SCL A 0 00 E 6 00 d P In3 Ou1 d 01 0 d01 b 09 6 Hitting RESET immediately terminates verification mode at any time In this instance the instrument resumes REAL mod...

Page 32: ...Set point make value no 1 appears and the LED of alarm 1 flashs Adjust value using and keys make value changes Press SET 1 appears indicating acceptance of new Set point make value SA of alarm 1 appears at display Press SET 1 current Set point break value no 1 appears and the LED of alarm 1 flashs Adjust value using and keys break value changes Press SET 1 appears indicating acceptance of new Set ...

Page 33: ...e entered in the same manner Short hitting of the SET 1 SET 2 respectively key while the instrument is in REAL mode initiates verification of the current settings of alarm 1 2 respectively Example Set point make SE 4 00 Set point break SA 3 80 Initial status REAL mode Press SET 1 shortly SP1 SE 4 00 SA 3 80 Hitting RESET immediately terminates verification mode at any time In this instance the ins...

Page 34: ...34 89 5 47 5 95 7 173 5 Appendix C Dimensions Dimensions in mm ...

Page 35: ...35 8 9 42 3 45 0 6 92 0 8 Panel cutout in mm Dimensions in mm ...

Page 36: ...36 A B C D E F G H I d e h Appendix D Layout of front and back panel ...

Page 37: ...ith programming G RESET memories CANCEL programming H Select display mode toggle between LED s h REAL display true value HOLD hold value displayed MIN contents of minimum memory displayed MAX contents of maximum memory displayed I Pocket window holding unit label J Terminal block power supply and contacts output K Terminal block signal input signal output and transmitter supply L Sub D serial port...

Page 38: ...38 For your notes ...

Page 39: ...39 For your notes ...

Page 40: ...40 WIKA Alexander Wiegand GmbH Co KG Alexander Wiegand Straße 30 63911 Klingenberg Germany Phone 49 93 72 132 9986 Fax 49 93 72 132 217 E Mail testequip wika de www wika de 1287974 04 2005 GB ...