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ProtEX PD8-6080/PD8-6081 Explosion-Proof Modbus

®

Scanner Instruction Manual

66

Math Functions (

math

)

The

Math

menu is used to select the math function that will determine the channels’ C1-C4 value. These

math functions are applied to PVs and other math channels. The results are displayed by selecting
Display Channel C (

d Ch C

) in the

Display

menu. Most math functions may be applied to all PVs: For

example, it is possible to add up to 16 PVs and calculate the total volume of all the tanks in a field. The
Math2 function allows for further calculations on the results of other math channels (e.g. C4 = C2/C1).
The following math functions are available:

Name

Math Operation (Examples)

(P = Adder, F = Factor)

Setting

Addition

(PV1+PV2+P)*F

Sunm

Difference

(PV1-PV2+P)*F

diF

Absolute difference

((Abs(PV1- PV2)+P)*F

diFAbS

Average

(((PV1+PV2)/2)+P)*F

AvG

Multiplication

((PV1*PV2)+P)*F

Nmulti

Division

((PV1/PV2)+P)*F

divide

Max PV

Max value of all selected PVs

Hi-pv

Min PV

Min value of all selected PVs

Lo-pv

Draw

((PV1/PV2)-1)*F

drAuw

Weighted average

((PV2-PV1)*F)+PV1

uwavg

Ratio

(PV1/PV2)*F

Ratio

Concentration

(PV1/(PV1+PV2))*F

Concen

Math 2

Math on other math channels

Nmath2

Addition

C3 = (C1+C2+P)*F

Sunm

Difference

C4 = (C1-C2+P)*F

diF

Absolute difference

C3 = ((Abs(C1- C2)+P)*F

diFAbS

Average

C4 = (((C1+C2)/2)+P)*F

AvG

Multiplication

C3 = ((C1*C2)+P)*F

Nmulti

Division

C4 = ((C1/C2)+P)*F

divide

Math Constants (

Const

)

The

Math Constants

menu is used to set the constants used in the math channel. The math functions

include the selected PVs, as well as the constants P (Adder) and the Factor F (Multiplier) as indicated in
the above examples.
The

Adder

constant (P) may be set from -99.999 to 999.999.

The

Factor

constant (F) may be set from 0.001 to 999.999.

The above chart details the math functions that may be selected in the

Math Function

menu.

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Содержание PD8-6080

Страница 1: ...ons Capabilities Isolated 24 VDC 25 mA Transmitter Power Supply Multi Pump Alternation Control Signal Input Conditioning for Flow Round Horizontal Tank Programmable Displays Function Keys 32 Point Squ...

Страница 2: ...e held liable for damages resulting from such improper use Failure to follow installation guidelines could result in death or serious injury Make sure only qualified personnel perform the installation...

Страница 3: ...ing Up the Process Variables PVs pv setup 37 Setting the Display Decimal Point disp dp 37 Setting the Float Decimal Point Flot dp 37 Scaling the PV Display Values sCale 38 Scale Menu 38 Setting Up the...

Страница 4: ...ng Dimensions 82 EU Declaration of Conformity 83 Table of Figures Figure 1 Transmitter Supply Voltage Selection 14 Figure 2 Integrated ProVu Required Connections 15 Figure 3 Connector Labeling for Ful...

Страница 5: ...by the master is scaled displayed and used to operate the relays and 4 20 mA output Data is displayed on an adjustable intensity dual line six digit display Its superluminous LED digits make it easily...

Страница 6: ...080 7H7 4 relays 4 20 mA output Feet Inches Display Models PD6081 6H0 PD6081 7H0 No options PD6081 6H7 PD6081 7H7 4 relays 4 20 mA output WARNING Cancer and Reproductive Harm www P65Warnings ca gov Ac...

Страница 7: ...nse timeout timer Slave Snooper mode Time the scanner will wait for new data before going into break condition Slave mode Programming 0 disables the timeout the last value received will be displayed i...

Страница 8: ...play Max min readings are stored until reset by the user or when power to the scanner is turned off User can reset by front panel pushbuttons digital input or via Modbus registers Password Three progr...

Страница 9: ...ent for each relay Note Relay coil is energized in non alarm condition In case of power failure relay will go to alarm state Auto Initialization When power is applied to the scanner relays will reflec...

Страница 10: ...lculation Multi Point Linearization 2 to 32 points for PV1 and PV2 Programmabl e Exponent 1 0001 to 2 9999 Low Flow Cutoff 0 999999 0 disables cutoff function for PV1 and PV2 Calibration Range Input R...

Страница 11: ...0 C T5 40 C to 65 C Certificate number Sira 12ATEX1182 IECEx Ex d IIC T Gb Ex tb IIIC T90 C Db IP68 Ta 40 C to C T6 40 C to 60 C T5 40 C to 65 C Certificate Number IECEx SIR 12 0073 Special Conditions...

Страница 12: ...2 2005 EMC heavy industrial generic immunity standard RFI Amplitude Modulated 80 1000 MHz 10 V m 80 AM 1 kHz 1 4 2 0 GHz 3 V m 80 AM 1 kHz 2 0 2 7 GHz 1 V m 80 AM 1 kHz Electrical Fast Transients 2kV...

Страница 13: ...applicable local and national regulations e g NEC For Installation in USA The ProtEX MAX must be installed in accordance with the National Electrical Code NEC NFPA 70 For Installation in Canada The P...

Страница 14: ...hile the instrument is in service Cover Jam Screw The cover jam screw should be properly installed once the instrument has been wired and tested in a safe environment The cover jam screw is intended t...

Страница 15: ...ack of the electronics module Some connectors may be provided already connected These connections are required for proper operation of the ProtEX MAX and should not be removed unless instructed to by...

Страница 16: ...dules cables or scanners to the RJ45 M LINK connector Otherwise damage will occur to the equipment and the scanner Figure 3 Connector Labeling for Fully Loaded PD6080 6081 Power Connections Power conn...

Страница 17: ...er The ProtEX MAX has three diagnostic LEDs a Power P LED to show when the module is powered properly a Transmit Data TX LED to show when the module is being transmitted to by the PC side and a Receiv...

Страница 18: ...e to the meter and ensure personnel safety Notes 1 Termination resistors are optional and values depend on the cable length and characteristic impedance Consult the cable manufacturer for recommendati...

Страница 19: ...to RS 485 serial converter located in a safe area F4 Digital Input Connections A digital input F4 is standard on the scanner This digital input connected with a normally open closure across F4 and CO...

Страница 20: ...d Experiment for best results Figure 12 Low Voltage DC Loads Protection RC Networks Available from Precision Digital RC networks are available from Precision Digital and should be applied to each rela...

Страница 21: ...t panel LED flashes when locked out The interlock relay would be wired in series with the load N O contact See below Figure 14 Interlock Connections Analog Input Signal Connections Analog input signal...

Страница 22: ...e fuse The display may or may not show a fault condition depending on the nature of the overload The fuse limits the current to a safe level when it detects a fault condition and automatically resets...

Страница 23: ...y requirements and applicable national state and local codes to prevent damage to the meter and ensure personnel safety External Switch Contacts The ProtEX MAX includes 4 digital inputs These digital...

Страница 24: ...etract finger more than three inches from the glass before pressing the next button When the cover is removed the four mechanical buttons located next to the sensors are used The sensors are disabled...

Страница 25: ...or relays in manual mode flash with the M LED every 10 seconds Press the Menu button to enter or exit the Programming Mode at any time Press the Right arrow button to move to the next digit during dig...

Страница 26: ...ructions until you see one of the dialogs below If you receive a User Account Control warning click Yes 4 If there is an update available click the Update button to install the new version Otherwise c...

Страница 27: ...integer t poll Polling Time Enter Polling Time the time between read commands In other words how often the display is updated in Master mode Display Parameter Action Setting Description t resp Respon...

Страница 28: ...nths of an Inch dec Decimal Decimal Format Display Parameter Action Setting Description Ft In 8 Eighths Eighth Inch Format Ft In 16 Sixteenths Sixteenth Inch Format Dec Pt Decimal Point Decimal Point...

Страница 29: ...ns off when Communications Break detected Aout Analog output Enter the Analog Output scaling menu AOut 1 Aout channel Analog Output source channel 1 3 Display Parameter Action Setting Description Dis...

Страница 30: ...being changed is displayed brighter than the rest Press and hold the Up arrow to auto increment the display value Press the Enter button at any time to accept a setting or the Menu button to exit with...

Страница 31: ...scanner When using more than one scanner in a multi drop mode each scanner must be provided with its own unique address The scanner address Scan ID may be programmed between 1 and 247 The transmit del...

Страница 32: ...ooper Mode navigate to the PV Number menu and press ENTER From there the user can scroll through all of the sixteen available PVs In order to enable a specific PV simply press ENTER to access the desi...

Страница 33: ...pe byte order Poll Time Enter the time interval to poll the slave devices selected Response timeout Enter the time interval to wait after three polls before reporting it as a Communications Break Back...

Страница 34: ...ates e g 4800 bps or less 2 The response time for scanners set up for Snooper mode must be greater than the Master s poll time This setting corresponds to the time window during which the Snooper list...

Страница 35: ...s Float 3 Default Slave ID for PV1 001 for PV2 002 for PV3 003 etc The Master ignores the decimal point setting for slave devices that specify a Short or Long integer For example a slave that is displ...

Страница 36: ...Feet Inches d Decimal Point e Scale input data 2 Display assignment Intensity 3 Relay assignment and operation 4 4 20 mA analog output scaling Press the Menu button to exit at any time Aout Menu will...

Страница 37: ...e right until no decimal point is displayed and then it moves to the leftmost position The decimal point is programmable only for the Display Value Setting the Float Decimal Point Flot dp If floating...

Страница 38: ...w Error if the scaling or calibration process is unsuccessful Undesired operation may occur if the error is not corrected Correct the error by either changing one of the inputs in question or changing...

Страница 39: ...2 can be programmed to display any of the following Display Parameter Setting Description D pv Display PV Display PVs 1 16 D Ch C Display C Channel Display Math Channels C1 C4 Pv unit Display PV Units...

Страница 40: ...ay Note For Tag PVn and Tag PVn U the default settings for PVs are 1 3 5 7 followed by two underscores which represent empty PVs These all can be changed to any enabled PVs Continues to Relay Setup Li...

Страница 41: ...e For Tag PVn and Tag PVn U the default settings for PVs are 2 4 6 8 followed by two underscores which represent empty PVs These all can be changed to any enabled PVs Continues to Display Intensity Se...

Страница 42: ...p P 7 7 H H q q 8 8 h h r r 9 9 I I s S A A I i t t Degree b b j J u u Space Notes Degree symbol represented by if programming with ScanView The letters m and w use two 7 segment LEDs each when select...

Страница 43: ...gister PV3 30017 30017 Tank 1 Average Temperature Data Type Long integer Binary Signed Long Byte Order 1234 1234 PV4 Slave ID 2 2 Function Code 04 04 Register PV4 30001 30001 Tank 2 Product Level Para...

Страница 44: ...Order 1234 1234 PV11 Slave ID 4 4 Function Code 04 04 Register PV11 30003 30003 Tank 4 Interface Parameter PD6080 Master PD6080 Snooper Descriptio n Commen t Data Type Long integer Binary Signed Long...

Страница 45: ...nterface Level and Average Temperature One of the Modbus Scanners is located next to the tanks and the other is located in the control room The display readout is shown in sixteenths of an inch Regist...

Страница 46: ...fter alarm condition has cleared e Pump alternation control automatic reset only f Sampling the relay is activated for a user specified time g Off relay state controlled by Interlock feature 3 Set 1 S...

Страница 47: ...below reset point The deadband is defined as the difference between set and reset points Minimum deadband is one display count If the set and reset points are programmed with the same value the relay...

Страница 48: ...grammed to go to one of the above conditions when the scanner detects the loss of the input signal i e 0 005 mA Notes 1 This is not dependent on the Communications Break or Response Timeout setting 2...

Страница 49: ...ation Set Reset Note Relay coil is energized in non alarm condition In case of power failure relay will go to alarm state Low Alarm with Fail Safe Operation Set Reset Note Relay coil is energized in n...

Страница 50: ...s can be programmed to react to this event by going On Off or No Action After communication is restored the relays are turned off or on based on their operating mode and their set and reset points wit...

Страница 51: ...The following graphs show the operation of the time delay function When the signal crosses the set point the On time delay timer starts and the relay trips when the time delay has elapsed If the sign...

Страница 52: ...wer to the scanner is off Front Panel LEDs The LEDs on the front panel provide status indication for the following The scanner is supplied with four alarm points that include front panel LEDs to indic...

Страница 53: ...ition Latching Relay LatcH In this application the scanner is set up for manual reset at any time Acknowledging the alarm even if the alarm condition is still present resets the relay and turns off th...

Страница 54: ...that the first pump on is the first pump off Application 1 Pump Alternation Using Relays 1 2 1 Relays 1 and 2 are set up for pump alternation 2 Relays 3 and 4 are set up for low and high alarm indicat...

Страница 55: ...d the corresponding digital input dI 1 to dI 4 terminal Interlock Relay Operation Example Relays 1 2 are configured to energize their front panel LEDs are off when SW1 SW2 switches above are closed If...

Страница 56: ...alog Output Source Programming on page 71 No equipment is needed to scale the analog outputs simply program the display values to the corresponding mA output signal The Analog Output menu is used to p...

Страница 57: ...played and enter the correct password to gain access to the menu After exiting the programming mode the scanner returns to its password protected condition Disabling Password Protection To disable the...

Страница 58: ...off 7 User Programming for function keys and digital I O 8 Analog Channels Input Calibration 9 System Information Advanced Menu Navigation Tips Press and hold the Menu button for three seconds to acce...

Страница 59: ...ibrate input 1 signal or program input 1 value Dis 1 Display 1 Program display 1 value Inp 2 Input 2 Calibrate input 2 signal or program input 2 value up to 32 points for PV1 PV2 Display Parameter Act...

Страница 60: ...et Points 1 8 Set Points 1 8 Rly d Relay Disable Relay Disable all relays Rly e Relay Enable Relay Enable all relays O Hold Output Hold Output Hold all relays d Hold Display Hold Display Hold while he...

Страница 61: ...V and remain there until the operator manually advances to the next PV or returns to the previous PV If a new alarm is detected the process is repeated The scanner ignores old alarms Control Menu Cont...

Страница 62: ...splayed immediately by setting the bypass value accordingly If the input signal goes beyond the bypass value it will be displayed immediately with no averaging done on it The noise filter bypass value...

Страница 63: ...provides a display that is linear with respect to the input data e g 0 000 0 000 10 000 10 000 and then 5 000 5 000 Linear Function Menu Linear Scanners are set up at the factory for linear function...

Страница 64: ...he maximum flow Programmable Exponent Function Menu prog e The programmable exponent function is used to calculate open channel flow measured with a level transmitter in weirs and flumes The flow rate...

Страница 65: ...in any engineering unit without the need to re enter the dimensions again Changing the Volume from Gallons to Liters In the graphic entering the 48 for the diameter and 120 for the length of the round...

Страница 66: ...2 P F diFAbS Average PV1 PV2 2 P F AvG Multiplication PV1 PV2 P F Nmulti Division PV1 PV2 P F divide Max PV Max value of all selected PVs Hi pv Min PV Min value of all selected PVs Lo pv Draw PV1 PV2...

Страница 67: ...sed 8 Please refer to the following graphics for details on various Math Functions Main Math Channels Each PV is represented by an underscore There are 6 lines shown and ten lines hidden Enter any or...

Страница 68: ...sion Proof Modbus Scanner Instruction Manual 68 Sum Menu sunm Difference Menu dif Difference Absolute Menu difAbS Average Menu avg Multiplication Menu nmulti Divide Menu divide Only two PVs at a time...

Страница 69: ...enu Lo pv Draw Menu drauw Only two PVs at a time will be used for this function Weighted Average Menu uwAvg Only two PVs at a time will be used for this function Ratio Menu ratio Only two PVs at a tim...

Страница 70: ...nner to be programmed so that the often unsteady output from a differential pressure transmitter at low flow rates always displays zero on the scanner The cutoff value may be programmed from 0 to 9999...

Страница 71: ...g outputs follow the graphic above The overrange and underrange values are the values that will be output when the display shows an overrange or underrange condition This setting is common to all anal...

Страница 72: ...for all channels Rst HL Reset the stored maximum minimum display values for all channels relay Directly access the relay menu Set 1 Directly access the set point menu for relay 1 through 8 Rly d Disab...

Страница 73: ...R to take you to the next level then pressing the Up arrow until you arrive at the RESET menu Press ENTER to assign the RESET menu to the selected function key or digital input Now when the scanner is...

Страница 74: ...r 4 The display will show 4 nmA The PD6080 6081 mA output should now be close to 4 mA Press Enter and the display will show 04 000 Enter the actual value read by the digital mA meter and press Enter 5...

Страница 75: ...ss Menu to exit calibration without saving the changes Error Message Error An error message indicates that the calibration or scaling process was not successful After the error message is displayed th...

Страница 76: ...ase Master s Transmit Delay e g Snooper delay 100ms Master delay 110ms 2 Increase Snooper s byte to byte timeout 3 Decrease the slave device s transmit delay to 10ms 4 Snooper cannot read the same PV...

Страница 77: ...start the setup process from the factory defaults Instructions to load factory defaults 1 Enter the Advanced Features menu see page 58 2 Press Up arrow to go to Diagnostics menu 3 Press and hold Righ...

Страница 78: ...Channels which may have each performed a different Math function The dual line display can be customized by the user Typically the upper display is used to display the PV while the lower display is us...

Страница 79: ...th the integrated meter The symbols by each SafeTouch button correspond to a mechanical button as shown in the above table SafeTouch Button Tips To the extent possible install the display facing away...

Страница 80: ...oat decimal point Flot dp ddd ddd Number of points No pts 2 all PVs and C channels Scaling SCalE pv 1 All Input 1 InP 1 0 000 Display 1 Dis 1 0 000 Input 2 InP 2 10 000 Display 2 Dis 2 10 000 Math cha...

Страница 81: ...og out Dis 1 00 00 00 Output 1 value Out 1 4 000 mA Display 2 analog out Dis 2 20 00 00 Output 2 value Out 2 20 000 mA Parameter Display Default Setting Source analog output Source PV 1 Overrange outp...

Страница 82: ...is consistent with the appropriate hazardous locations certifications If the instrument is installed in a high voltage environment and a fault or installation error occurs high voltage may be present...

Страница 83: ...079 31 2008 EN 61000 6 4 2007 EN 61010 1 2001 and EN 61326 2006 are no longer harmonized The requirements of these standards have been checked against the harmonized standard EN 55022 2010 EN 60079 0...

Страница 84: ...55 8990 www predig com LIM8 6080_D SFT088 Ver 2 010 up 12 18 How to Contact Precision Digital For Technical Support Call 800 610 5239 or 508 655 7300 Fax 508 655 8990 Email support predig com For Sale...

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