User manual AKV-2VR4C Standard signal metering in
Contents
1. Number of additional setpoints 0 10 Setpoints 1 30 999 9999 Information 200 Serial number 0 9999 o 3 19 24 Technical data 9 Technical data Housing Dimensions Weight Fixing Material Colour Protection class Connection Display Digit height Segment colour Range of display Setpoints Overflow Underflow Display time Input Measuring range Input resistance Measuring error at measuring time 1 second Temperature drift Measuring time Display time Measuring principle Resolution at 1 sec measuring time Output Relay Switching cycles Sensor supply galvanic insulated Power pack Supply voltage galvanic insulated 160 x 130 x 60 mm B x H x T max 430 g 4 fixing holes in the lower section of the housing ABS UL94V 0 Black RAL7035 Standard IP65 abatable screw terminals line cross section up to 2 5 mm wire feed via PG9 screws 20 mm red 999 9999 one LED per switching point horizontal bars at top horizontal bars at the bottom 0 1 to 10 0 seconds Measuring R Measuring Digit range approx error MR 0 10 V 150kQ 0 1 1 0 5 V 150kQ 0 1 1 0 20 mA 100 Q 0 1 1 4 20 mA 100 Q 0 1 1 all measuring inputs 50 ppm K 0 1 to 10 0 seconds Voltage Frequency converter approx 20 bit Switch over contact 230 VAC 5 A respectively 30 VDC 2 A cos 1 with ohm resistive load 0 5 10 at max contact rating 5 10 mechanically2. Separation as per DIN EN 50178 Characteristics as per DIN EN 60255 24 VDC 50 mA 230 VAC 50 60 Hz 10 20 24 Technical data Power consumption Memory Data life Ambient conditions Working temperature Storing temperature Climatic density EMV CE sign Safety standard max 8 VA Parameter memory EEPROM gt 20 years 0 60 C 20 80 C rel humidity lt 75 on years average without dew DIN 61326 Conformity to 89 336 EWG DIN 61010 21 24 Trouble shooting 10 Trouble shooting The following list gives the recommended procedure for dealing with faults and locating their possible cause 10 1 Questions and answers l The unit permanently indicates overflow gt The input has a very high measurement check the measuring circuit Il The unit permanently indicates underflow _ gt The input has a very low measurement check the measuring circuit Ill The device shows HELP in the 7 segment display gt The unit has found an error in the configuration memory Perform a reset on the default values and reconfigure the unit according to your application IV Program numbers for parameterising the input are not available gt The program lock is set to a user level that does not permit access V Err1 lights up in the 7 segment display gt This error can only be eliminated by the manufacturer 10 2 Reset on default values To return the unit to a defined basic sta
3. User manual AKV 2VR4C Standard signal metering in wall mounting case Technical features Digit height 20 mm Colour red Range of display 999 9999 Wall mounting case black made of ABS plastic Protection class IP65 Sizes 160 x 130 mm Depth 60 mm Supply 230 VAC Sensor supply 24 V 50 mA Measuring input O 10 VDC 0 4 20 mA 2 relay output 10 point linearisation Offset presetting Tara Hold function V1 00 Stand 08 02 2010 Ya e foi ul es 2 Xd dl A D OT RE OD N _ 7 1 13 oo 10 2 NNN _ aaa N 0 Contents Brief description ici A A A A iio 3 Safety AVG Se seit eigen e chek A A AA A heceat eaea 3 PrOPer Usina 3 Control Of the device eee 3 Installation Sexson tecctasuctencetadeccdadecunettenteceasarastacesteqnessedenss ddr losetas 3 Notes on Asla O e a a taa 3 ASOMAN Lia hues ad 4 DIMENSIONS A ASA EE Pe oa aoe ed eres eee eer ee aes 4 Assembly of the wall type housing oooooooiooooconnncnnnnnnanannnncncnnnnn rana nan r errar enana nda 4 o ter lccedsele cian igndae a tatatentan teed A a Saas chen afes teem ies E a 5 Electrical CONNECUON carta ra o lacvahanmocanmacaneauenpadaacan qeteagettoaagamacadnauadigatnesgenceadnentys 5 Position of the connecting terminals into noted eien ieee unseen coneeena eebtasdntnnes 5 9 pole CONNECIOF SUMP iii A ade 6 5 pole CONNGECION SUP ici ii A avs evade A A a 6 Input for standard sia Suicida
4. for the standard signals and the sensor supply are connected 4 3 1 Input for standard signals The input signal is connected to terminals 3 to 5 The AK M2 VVR4C has a voltage input and a current input to which most conventional sensors with a standard signal output can be connected The input is galvanic isolated from the power supply auxiliary voltage and the sensor supply Sensor Measuring range 12 11 10 0 10 V 12 V 12 V U U 0 5 V 0 20 mA 24 mA 24 mA I l 4 20 MA Examples for connecting different transmitters can be found in the section on connecting examples 4 3 2 Sensor supply The 24 VDC sensor supply is available at terminals 1 and 2 The sensor supply is galvanic insulated from the measuring input Current loop sensors 2 wire and 3 wire and 4 wire sensors can be operated via the sensor supply as long as their current consumption is not higher than 50 mA Power consumption lt 1 2 VA 1 2 Sensor supply Sensor supply 6 24 Operation 4 4 Connection examples This section gives a few examples of practical connections Other connection options can be combined from the various examples Measuring a current signal 4 20 mA from a 2 wire transmitter using the sensor supply Sensor Input supply CODO i Measurement of a voltage signal 0 5 V or 0 10 V from a 3 wire transmitter using the sensor supply 24 VDC The gro
5. tasks Because of the large number of these settings and the limited possibility of displaying them on the 7 segment display the parameters have been given consecutive numbers 7 1 1 Measuring input PNO One of the aspects in the basic configuration is the desired measuring input which consists of the terminal selection and the relevant factory or sensor calibration 7 1 2 Skaling PN1 and PN2 The two program numbers 1 and 2 are used to scale the indication With these two parameters the end value and start value are parameterised If sensor calibration has been selected via PNO O then the current for the relevant sensor signal must be applied during programming Otherwise a simple allocation of the selected input configuration will be made For example at PNO 3 which corresponds to a standard signal input 0 10 V the value saved under PN1 will be indicated at 10 V and the value saved under PN2 will be indicated at O V 7 1 3 Decimal point PN3 By changing this parameter the number of places shown after the decimal point in the display is changed This parameter has no influence on the scaling of the indication value only on the position of the decimal point in the display 7 1 4 Offset shift PN5 With this parameter it is possible to carry out a parallel shift of the parameterised characteristic line This may be necessary if for example a pressure transmitter ages over the course of time giving rise to a shift in the zer
6. 6 Allocation of functions of the zero key PN54 ooccooccccccccccccccoconcnonccnncnnnnnnnnn no nccnncnnnnnnnnr nn nrcnnnnnn 17 Display flashing ANS varscnitsdacetera rescato rar dpi enero 17 Switching points PNGO TO APN TO rte ibid 17 Linearisation PN100 to PN110 rieien a eae od aa e a non nnnnnnnnnnnnnnnnnas 17 Serial number PN200 ica a E A E EEEE AA EAE LAENE Rd 17 Program number table siii ideales enga 18 SOGMNICAL CALAN fc AO 20 Tro ble SHOOT rss co acta Niece eit haat ea diia 22 Q estions ANG ANS WES patria id 22 Reset on default Value neninn e EE E A Aa e e a a aa 22 2 24 Brief description 1 Brief description With the digital indicator AKV 2VR4C standard signals DC 0 4 20 mA or DC 0 5 10 V can be measured The 4 digit display shows the measurements or the scaled value of the measurement During programming the display is used to indicate the set values and the user prompts Two relays are available to monitor threshold values the status of which is displayed via two separate LED on the front The integrated 24 VDC voltage output is used to supply possible sensors 2 Safety advices Please read the users guide before installation and keep it for future reference 2 1 Proper use The AKV 2VR4C is designed for the evaluation and display measuring transmitter signals With the alarm outputs it is possible to perform simple control tasks A Danger Careless use or improper operation can result in personal injury and or dama
7. 6 toT EELO 0101A AAE Airs alee NT 6 ConnectiomexampleS e a ee a a a es lee E RES 7 Operation eaen OA Ae ek a Si DA de eee a a 8 Operating and display elements isos a oe eee aed aia 8 Keys 8 DS PLAYS a a dci 8 SWIENING OMi aana a sei tictetid states a chemtemesiesitan itech A ates E aad a a a EES 9 St rting SECU CO san dd aa a aa aaa A aa a e a a aaa a rA aroi Si 9 MIN MAX Me mory it A A A dd eed 9 Overflow and UnderfloW A 9 A E E 10 Optical response display flashing oooooooconcnonininnonncoccccccccccccnn cnn cnn 11 A stan det aaea T T E leet tang AEE A AE AE AAT AEE 12 Programming ProcedUt esiis anneron ri i n 12 Change to the operating mode ivi a a di 13 Measuring INPUL ys sicesccccg Aceg casey ecdenacdes cucdes Fedencedenecereyenney sae tence i peaved vaste ERARETO NEKETEK wees 13 Factory Call MOM id 13 SEA NA O desuhiveane kolanccetass 14 Sensor NAC AN A eaten ee 14 Device parameter an AA ARA ARO Aids 15 Measuring Input PND estira Ai a 15 Skaling PN1 and PN2 raid 15 Decimal poOIMtPENS ET T AE E T sak tans raatstenteokstscevtivisusvaraaecssanis desist seca 15 Ofset sH PNS aiaa a a aaa E A A T aa a aaia TNS 15 Zero point suppression PN10 ooocconcconncnniceniccnncnnncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnninnnneninenns 15 Indication time PNIS acis la Ai e eden T eS 15 Me as ring time PNIA ai A A E E A eens 16 Security setting user level PN50 to PNDZ2 ooococccciononiococenoccconnnnannntanrr rene rnnnn dano nr n nana 1
8. ardised signals e g 4 20 mA from all kinds of different measuring transmitters on the market to be measured directly 6 2 1 Factory calibration For this various sensor values for 0 10 V 0 5V 0 20 mA and 4 20 mA are stored in the unit and can be called up via the parameter PNO They are called factory calibrations because the data were established during production and are saved 13 24 Programming permanently in the unit It means that a pre adjusted transmitter can be operated directly with the indicator without any need to previously connect the signal to be measured to the indicator The indicator can be scaled freely according to the physical dimension to be measured 6 2 2 Sensor calibration If on the other hand the sensor has not been pre calibrated the indicator can be adjusted and calibrated direct via the measurement together with the sensor path This can be selected via the parameter PNO 0 and is consequently called sensor calibration 6 2 3 Sensor linearisation In addition non linear sensors can be linearised with the aid of a characteristic line that can be saved in the indicator This is described with the following example The sensor signal must be parameterised in a strictly monotonously manner i e every new calibration point e g PN104 must have a higher input signal than the previous one e g PN103 so that it is taken over by the indicator Otherwise no confirmation wi
9. ay the state of the relay outputs is displayed If a relay is switched the LED lights up 8 24 Operation 5 2 Switching on Before switching on you have to check all the electrical connections to make sure they are correct On completion of the installation the device can be switched on by applying the power supply 5 3 Starting sequence During the switching on process a segment test is performed for approx 1 second whereby all LEDs on the front including alarm LEDs are triggered After this the type of software is indicated for approx 1 second and then also for 1 second the software version After the starting procedure the unit changes to operation display mode 5 4 MIN MAX memory The measured minimum and maximum values are saved in a volatile memory in the unit and get lost when the unit is switched off You can call up the contents of the memory by pushing less than 1 second the A or W key The relevant value is indicated for approx 7 seconds By briefly pressing the same key again you will return immediately to the display mode A Display of the MAX value Y Display of the MIN value You can erase the value shown in the display by simultaneously operating the A 8 W keys The erasure is acknowledged by horizontal bars The content of the memory is lost when the unit is switched off 5 5 Overflow and Underflow An overflow of the display is indicated by horizontal bars at the top of the 7 se
10. ched on The switch off delay functions in a similar manner OA HH HH HH in other words it keeps the 5 alarm output switched on relay switch on delay 10 s until the parameterised time ON has elapsed treshold time s OFF fi 1 fi fi fi 1 fi 1 fi fi 1 fi fi time s Operation 5 6 1 Optical response display flashing The switching on of one or more alarm outputs can also be set to trigger a flashing of the display to enhance the optical response 11 24 Programming 6 Programming The display shows the program numbers PN right aligned as a 3 digit number with a P at the front ONO Y OU I Y Y Y 7 j nig NIA pt Yo Vo o lama Display of e g program number 0 6 1 Programming procedure The entire programming of the AKV 2VR4C is done by the steps described below Change to the programming mode Pushing the P key changes to programming mode The unit goes to the lowest available program number When the programming lock is activated the key must be pressed for at least 1 seconds j l i y f j Change to programming mode by pushing key P The Fi sire j first released program number PN appears in this Yo Vo o laa case PNO P WA Changing to other program numbers To change between individual program numbers hold the P key down and press the A key f
11. ehaviour of the switching points can be influenced via various program numbers The data refer to the scaled measurement and are updated with the set measuring time A description of the various parameters is given in Section 5 6 Relay 7 1 12 Linearisation PN100 to PN110 Through linearisation the user has the possibility to linearise a non linear sensor signal A detailed description can be found in the chapter on Sensor linearisation Under PN100 the desired number of additional set points can be released Only after changing the number are they accessible via the configuration PN101 to max PN110 If PN100 0 then no PN101 will be displayed To monitor the desired linearisation all the set points should first be parameterised otherwise there may be deviations from the desired value in the display 7 1 13 Serial number PN200 Under PN200 the 4 digit serial number can be called up that allows allocation to the production process and the manufacturing procedure This parameter can only be viewed 17 24 Program number table 8 Program number table The program table lists all the program numbers PN with their function range of values default values and user level PN Function Range of value Def User ault level Channel 1 0 Measuring input Current Voltage 2 2 0 Sensor calibration Parameters 1 to 4 make use of the 1 0 20 mA factory calibration 2 4 20 mA 3 0 10V 4 0 5V 1 Final value r
12. espectively fullscale 999 9999 1000 2 Offset shift on display value 10 Zero point suppression General settings 13 Display time 14 Measuring time Security settings 50 Programming lock 0000 9999 51 Access code 0000 9999 52 User level 1 8 Threshold behaviour of LED display 54 Actuator via zero key 0 deactivated 1 TARA 2 Offset shift 3 HOLD 59 Display flashing approx 0 5 seconds No flashing Flashes at setpoint 1 Flashes at setpoint 2 0 no flashing 1 flashes at 1 2 flashes at 2 3 flashes at 1 and 2 Flashes at setpoint 1 and 2 Setpoint 1 60 Setpoint 1 0 deactivated 1 activated Threshold z Hysterisis Active below above threshold value 0 active below 1 active above Switch delay in seconds 0 1000 seconds 18 24 Program number table PN Function Range of value Def User ault level 65 Delay type 0 none 0 4 1 switch on delay 2 switch off delay 3 switch on off delay Setpoint 2 70 Setpoint 2 0 deactivated 1 4 1 activated 71 Threshold 999 9999 1000 6 72 Hysterisis 1 9999 1 5 73 Active below above threshold value 0 active below 1 4 1 active above 74 Switch delay in seconds 0 1000 seconds 1 4 Delay type 0 none 1 switch on delay 2 switch off delay 3 switch on off delay Linearisation
13. ge to the equipment 2 2 Control of the device The indicators are checked before dispatch and sent out in perfect condition Should there be any visible damage we recommend close examination of the packaging Please inform the supplier immediately of any damage 2 3 Installation The AKV 2VR4C must be installed by a suitably qualified specialist e g with a qualification in industrial electronics 2 4 Notes on installation U There must be no magnetic or electric fields in the vicinity of the device e g due to transformers mobile phones or electrostatic discharge L The fuse rating of the supply voltage should not exceed a value of 1A N B fuse A Do not install inductive consumers relays solenoid valves etc near the device and suppress any interference with the aid of RC spark extinguishing combinations or free wheeling diodes LI Keep input output and supply lines separate from one another and do not lay them parallel with each other Position go and return lines next to one another Where possible use twisted pair Screen off and twist sensor lines Do not lay current carrying lines in the vicinity Connect the screening on one side on a suitable potential equaliser A The device is not suitable for installation in areas where there is a risk of explosion hazardous areas Any electrical connection deviating from the connection diagram can endanger human life and or can destroy the equipment L Do not install t
14. gment display An underflow of the display is indicated by horizontal bars at the bottom of the 7 segment display ____ 9 24 Operation 5 6 Relay With the aid of the LED below the 7 segment display you can view the switching state of the relay An active relay is indicated by the relevant LED lighting up The relays have the following properties with regard to their switching properties Setpoint output Deactivated activated Threshold Threshold value for switchover Hysteresis Width of the window between the switch thresholds Operating principle active above SP value active below SP value Switch on delay Time between reaching the threshold and the resultant switching on of the relay Switch off delay Time between reaching the threshold and the resultant switching off of the relay setpoint Active above SP value The setpoint is off below the ON threshold and switched on on reaching the threshold treshold 4 1 fallen po al OFF display L hysteresis setpoint Active below SP value The setpoint is on below the threshold and switched off on reaching the threshold treshold 1 li CM O Z t I I i i raised A fallen een ooo oo OFF Switch on delay L hysteresis The relay is on e g 10 seconds after reaching the threshold briefly exceeding the threshold does not lead to input display a PE the relay being swit
15. he device nearby a heat source ambient temperature 3 24 Electrical connection 3 Assembly The wall type housing consists of an upper part and a lower part A suitable seal has been inserted in the lower part to achieve protection IP66 In the upper part is the AKV 2VR4C with its operating and display elements On the back are the terminals for all the electrical connections The AKV 2VR4C is intended for wall mounting 3 1 Dimensions Re Wa 160 mm 130 mm Housing depth 60 mm 3 2 Assembly of the wall type housing l Before mounting the unit the side flaps covering the area where the screws are located must be flapped open to the left and right Il With a suitable screw driver loosen the 4 fixing screws joining the upper to the lower section Now the upper part can be removed from the lower part The upper section is connected to the lower section via a catch support facilitating subsequent cable assembly on the AKV 2VR4C unit which is hanging downwards III In the next step in accordance with the above diagram 4 holes should be drilled for the screws After this you can mount the housing on the wall with the PG screws aligned upwards IV Now the connecting cables can be fed via the PG screws to the unit and connected to the screw clamp terminal in line with the connection diagram V After successfully mounting the lower section lift up the upper sectio
16. ll be shown On the other hand the relevant indication values do not need to increase constantly They can also fall or alternate between rising and falling Example To program e g 5 additional calibration points 5 must be entered under PN100 Subsequently for each of the calibration points the voltage current must be applied to the unit and the respective indication value programmed under the following program numbers PN101 PN105 Linearisation of a pressure transmitter 0 100 mbar with output 0 20 mA The indicated value before correction can be either calculated from the known characteristic line of the transmitter or determined empirically The non linear range is between 0 75 mbar For calibration point 101 this means A pressure of 15 mbar the transmitter delivers 3 3 mbar instead of the ideal value of 3 0 mbar Since 20 mA in the display corresponds to 100 0 mbar 3 3 mA in the display corresponds to 16 5 mA before the correction Setpoint Pressure Output Indication Desired PN mbar transmitter mA before indication correction OUT IN 2 0 0 5 2 5 0 0 101 15 3 3 16 5 15 0 102 30 6 2 31 0 30 0 103 40 9 2 46 0 40 0 104 60 11 4 57 0 60 0 105 75 14 7 73 5 75 0 1 100 20 0 100 0 100 0 14 24 Programming 7 Device parameter The AKV 2VR4C has a number of unit parameters with which the function of the indicator can be adjusted to the relevant measuring
17. n with the AKV 2VR4C and place it on the lower section Using the 4 fixing screws screw the upper part to the lower part Take care that the screws are completely tightened in order to attain protection IP66 Finally fold the cover flaps inwards again 4 24 Electrical connection 3 3 Mounting holes 160 0 oo 285 E A fea US O gor i ass r L are AN AD Oe 139 0 Mafbild der Befestigungsl cher 4 Electrical connection Connect all the signals needed for operation to the back terminal strips The connecting terminals are provided with a reference grid of 5 08 mm as clamp terminals These enable the connection of wires up to 2 5 mm 4 1 Position of the connecting terminals O O Transmitter Input S1 Power Supply 2 Supply I YVOOOQ VLODOGWWWA ld 24 VDC max L PE NJ Max 50 mA AC 230 V 5A AC 230 V 5A 0 5 10 V DC 30V 2A DC 30V 2A 0 4 20 mA 5 24 Electrical connection 4 2 9 pole connector strip Via the connector strip with the terminal numbers 6 to 14 the voltage supply auxiliary power of the device and the two relay outputs are connected eS 1 RE Auxiliary power Relay 2 S2 e p po p p Roar may Com PE Normally Normally Com open closed open closed 4 3 5 pole connector strip Via the connector strip with the terminal numbers 1 to 5 the signal input
18. o point With the parallel shift the transmitter can be adjusted back to the zero point Another application is to parameterise a certain tank level to zero and have any deviation from this level displayed 7 1 5 Zero point suppression PN10 Via the zero point suppression an indication value window can be defined as zero This means for example that at PN10 10 all indication values between 10 10 are shown in the display as zero This function is intended to produce a reliable zero indication at high display resolution and low sensor accuracy around zero This could be for example the rpm of an engine for which a zero would be expected in the display when standing still 7 1 6 Indication time PN13 The indication time is the interval at which the display is updated The longer the time between two indication cycles the calmer the display As a rule the eye perceives the indication time of 1s as very pleasant If the adjusted indication time is longer than the adjusted measuring time no averaging of the detected measuring values during the indication time takes place The display will be always refreshed with the newest detected measuring value 15 24 Programming 7 1 7 Measuring time PN14 The measuring time corresponds to the conversion time of the A D conversion which determines the response time of the alarm outputs The longer the conversion time the smaller the influence of disturbances and the higher the resoluti
19. on of the measured signal 7 1 8 Security setting user level PN50 to PN52 With the parameters in the security settings access to the program numbers is regulated through the setting of various user levels The user levels divide the access into various levels The user is only given access to the settings authorised by the system operator such as the setting of thresholds The lower the figure for the user level given under PN52 the lower the level of security of the unit parameters against user intervention Userlevel PN 52 1 213 4 5 6 7 Accessto TPN Locking code user level 51 52 X Measuring input parameters 0 18 XX X Tara Hold 54 XX X Linearisation parameters for measuring 100 110 X X X input Parameters of the alarm outputs 59 60 63 65 X X X X X 70 73 75 Hysteresis of the alarm outputs 62 72 XIXIXIXIXIX Thresholds of the alarm outputs 61 71 XIXIXIXIXIXIX Access code 50 XIXIXIXIXIXIXIXIX Serial number 200 X XIX XIX X X X X The user levels 1 and 3 are reserved user levels at which access to the higher numbered user level is active The parameterised user level PN52 is active as long as the locking code PN51 and the access code PN50 are different On delivery of the AKV 2VR4C both parameters are set to 0000 so that the programming lock is deactivated On changing to programming mode the unit jumps to the first authorised program number If u
20. or changing to a higher program number or the W key for changing to a lower number By keeping the keys pushed e g P amp A the display will begin after approx 1 second to automatically run through the program numbers Example 7 0 Ll 4 J Y Y aiis parameterised under PNO J U U B Uo Y l Hold the P key down and press the A key once PN1 appears in the display Under this parameter the Piviia final value of input can be changed Change to the parameter Once the program number appears in the display you can press the W or A key to get to the parameters set for this program number The currently stored parameters are displayed Example By pressing the W or A key the currently stored Mob uy i q gan Y Value for PN1 appears in the display i A Ll Lt In this case it is 75 64 PIVA Changing a parameter After changing to the parameter the lowest digit of the respective parameter flashes on the display The value can be changed with the A or V key To move to the next digit the 12 24 Programming P key must be briefly pressed Once the highest digit has been set and confirmed with P the lowest digit will begin to flash again gt f Example A Y The 4 is flashing this is the lowest value digit and by flashing it is asking for a figure to be entered In
21. our example the value is to be changed from 75 64 to 75 00 You can change the value by changing the figure from 4 to O using the A or V key To move to the next digit the P key must be briefly pressed The 6 begins flashing Change the value from 6 to 0 using the A or V key The 5 and the 7 need no change Cap a d gt d E LJ E o LI K CO gt I gt Saving parameters All parameters must be acknowledged by the user by pressing the P key for one second The changed parameters are then taken over as the current operating parameters and saved in the EEPROM This is confirmed by horizontal bars lighting up in the display f a rT ot Example a P Save the parameters by pressing P for one ULA Lah secona PIVA All the newly entered data are confirmed by the unit If no confirmation is received the relevant parameters have not been saved Example ao aa m ae You receive confirmation from the unit that the changes have been saved through the appearance of horizontal bars in the middle segments Piva 6 1 1 Change to the operating mode If no key is pressed in programming mode for approx 7 seconds the unit automatically returns to operating mode 6 2 Measuring input The AKV 2VR4C is equipped with a measuring input for standard signals that enables stand
22. ser level PN52 3 then for example the parameters of the alarm outputs can be changed but changing the parameter of the measuring input PNO is not possible at this user level In order to obtain access to all program numbers later equivalent to user level 0 you have to enter under PN50 the same code you entered before under PN51 You must then acknowledge this by pressing the P key for approx 1s After this you have access to all program numbers Caution If the locking code becomes lost the unit can be set to the default value 0000 at the manufacturer s without any data loss 16 24 Programming 7 1 9 Allocation of functions of the zero key PN54 By pushing of the zero key functions like e g TARA and HOLD can be actuated ora offset shift can be preset By allocation of TARA the key needs to be pushed for at least 1 second The device confirms the function by showing 0000 in the display With activated offset shift the value in PN5 will be added to the initial value directly by pushing the key A display hold can only be actuated for approx 20 seconds By pushing the zero key again one turns back into the current measurement directly During HOLD phase the display flashes 7 1 10 Display flashing PN59 By activating the display flashing various alarm states can be optically reinforced The trigger for the display flashing can be freely assigned to the setpoint outputs 7 1 11 Switching points PN60 to PN75 The b
23. te a reset can be carried out to the default values The following procedure should be used l Switch off the power supply Il Press button P IIl Switch on the power supply and press P for further approx 2 seconds With reset the default values of the program table are loaded and used for subsequent operation This puts the unit back to the state in which it was supplied Caution This is only possible when the programming lock PN50 allows access to all PNs or HELP is shown in the display Caution All application related data are lost 22 24 Trouble shooting 23 24 Trouble shooting 24 24
24. und is bridged via the sensor which eliminates the measuring error through the drop in voltage on the sensor supply wires Sensor Input supply QOD Measuring a current signal 0 20 mA from a 3 wire transmitter using the sensor supply 24 VDC The voltage drop on the sensor supply wire is irrelevant which is why this can also be bridged directly on the indicator Sensor Input supply VODUO 7 24 Operation 5 Operation This unit is operated via the P A and V keys 5 1 Operating and display elements D C C A I I CLA aio oem 5 ES point o S1 O S2 6 Dimension gap 7 7 segment display P 1 4 O Front view 5 1 1 Keys The AKV 2VR4C has 3 keys with which you can parameterise and call up various functions during operation 1 Program key With the program key you can call up the programming mode or perform P various functions in the programming mode 2 Minus key With the minus key you can call up the MIN memory or alter parameters Vv in the programming mode 3 Plus key With the plus key you can call up the MAX memory or alter parameters in A the programming mode 5 1 2 Displays The AKV 2VR4C has a 4 digit 7 segment display and two LED 4 7 segment In the 7 segment display measuring values are displayed respectively display during programming the program numbers or parameter are displayed 5 Setpoint display In the setpoint displ
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