Precision Digital Corporation PD6820 Instruction Manual Download Page 3

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PD6820 Explosion-Proof Loop-Powered Rate/Totalizer

Instruction Manual

Table of Contents

Introduction ......................................................................................................... 2

Ordering Information .......................................................................................... 2

Specifications ..................................................................................................... 5

General ............................................................................................................ 5

Input ................................................................................................................ 5

Rate/Totalizer .................................................................................................. 5

Open Collector Output ................................................................................... 6

Product Ratings and Approvals .................................................................... 6

Electromagnetic Compatibility ...................................................................... 6

Safety Information .......................................................................................... 6

Installation........................................................................................................... 7

Unpacking ....................................................................................................... 7

Pre-Installed Conduit Plug ............................................................................ 7

Mounting ......................................................................................................... 7

Dimensions ..................................................................................................... 7

Cover Jam Screw ........................................................................................... 8

Connections ................................................................................................... 8

Wiring Diagrams ............................................................................................. 9

External Reset Connection .......................................................................... 9

Open Collector Output Connections ............................................................ 9

Setup and Programming .................................................................................. 10

Overview ....................................................................................................... 10

SafeTouch Buttons ...................................................................................... 10

SafeTouch Button Tips and Troubleshooting ............................................. 10

Buttons and Display ..................................................................................... 11

Main Menu Display Functions & Messages .............................................. 12

Main Menu ..................................................................................................... 12

Setting Up the Meter (

SETUP

) ....................................................................... 13

Setting Numeric Values ............................................................................. 13

Setting the Decimal Point (

dec.PT

) ............................................................. 13

Programming the Meter (

Prog

) .................................................................. 14

Setting the Time Base (

t.base

) .................................................................. 15

Setting the Total Conversion Factor (

totCF

) ............................................. 15

Manual or Automatic Total Reset Function (

t rST

) ................................... 16

Setting the Tag Display (

tag

) ..................................................................... 16

Setting Up the Password (

PASSWRD

) .......................................................... 17

Locking the Meter ...................................................................................... 17

Making Changes to a Password Protected Meter ...................................... 17

Disabling Password Protection .................................................................. 17

Service Feature (

SERVICE

) ........................................................................... 17

Advanced Features Menu ............................................................................ 18

Advanced Features Menu & Display Messages ........................................ 18

Alarm & Pulse Output (

OUTPUT

) ................................................................. 19

Advanced Function Selection (

FUNCTN

) ..................................................... 20

Multi-Point Linearization (

lnear

)................................................................ 20

Multi-Point Scaling (

SCALE

) ........................................................................ 20

Multi-Point Calibration (

CAL

) ....................................................................... 20

Square Root Linearization (

Squar

) ............................................................ 20

Low-Flow Cutoff (

CUTOFF

) .......................................................................... 20

Programmable Exponent Linearization (

Prog.E

) ........................................ 21

Internal Calibration (

ICAL

) .......................................................................... 21

Summary of Contents for PD6820

Page 1: ...ammable Exponent Feature Open Collector Pulse or Alarm Output Display Mountable at 0 90 180 270 SafeTouchTM Through Glass Button Programming HART Protocol Transparent Loop or External DC Powered Backlight Standard Operating Temperature Range 40 to 75 C 40 to 167 F FM Approved as Explosion Proof Dust Ignition Proof Flame Proof CSA Certified as Explosion Proof Dust Ignition Proof Flame Proof ATEX an...

Page 2: ...ective unit See Warranty Information and Terms Conditions on www predig com for complete details 2020 Precision Digital Corporation All rights reserved Introduction The ProtEX RTA PD6820 is a rugged explosion proof loop powered rate totalizer fully featured for demanding applications in hazardous areas or in the harshest environmental conditions The meter derives all of its power from the 4 20 mA ...

Page 3: ...s Messages 12 Main Menu 12 Setting Up the Meter SETUP 13 Setting Numeric Values 13 Setting the Decimal Point dec PT 13 Programming the Meter Prog 14 Setting the Time Base t base 15 Setting the Total Conversion Factor totCF 15 Manual or Automatic Total Reset Function t rST 16 Setting the Tag Display tag 16 Setting Up the Password PASSWRD 17 Locking the Meter 17 Making Changes to a Password Protecte...

Page 4: ...23 Quick User Interface Reference 24 EU Declaration of Conformity 25 Table of Figures Figure 1 Enclosure Dimensions Front View 7 Figure 2 Enclosure Dimensions Side Cross Section View 7 Figure 3 Connector Board 8 Figure 4 Connections without Backlight 9 Figure 5 Connections with Loop Powered Backlight 9 Figure 6 Connections with Externally Powered Backlight 9 Figure 7 Reset Connections 9 Figure 8 C...

Page 5: ...y be mounted directly to conduit Two slotted flanges for wall mounting or NPS 1 to 2 or DN 40 to 65 mm pipe mounting See Dimensions on page 7 Overall Dimensions 5 65 x 5 25 x 4 86 W x H x D 144 mm x 133 mm x 124 mm Weight 5 00 lbs 80 oz 2 27 kg Warranty 3 years parts and labor See Warranty Information and Terms Conditions on www predig com for complete details Input Input 4 20 mA Accuracy 0 03 of ...

Page 6: ...oof for use in Zone 1 Ex d IIC T6 Gb Protection by Enclosure for use in Dust Atmospheres Zone 21 Ex tb IIIC T85 C Db IP68 Ta 40 C to 75 C Certificate number IECEx SIR 10 0056X Special Conditions for Safe Use Use suitably certified and dimensioned cable entry device and or plug The equipment shall be installed such that the supply cable is protected from mechani cal damage The cable shall not be su...

Page 7: ...art is missing or the meter malfunctions please contact your supplier or the factory for assistance Pre Installed Conduit Plug The PD6820 is supplied with one pre installed conduit plug for installations that do not require the use of both conduit entries The conduit stopping plug includes an internal hexagonal socket recess for removal The conduit plug and its factory installation are included in...

Page 8: ... mA signal return negative terminal connection when not using loop powered backlight BACKLIGHT 9 36 VDC when powering backlight from external supply BACKLIGHT 4 20 mA signal return negative terminal when using the installed loop powered backlight or ground negative when power ing backlight from external supply OUTPUT NPN open collector output positive OUTPUT NPN open collector output negative RESE...

Page 9: ...xternal reset connections are made to two terminals labeled RESET Connect to a contact closure source such as a relay or a pushbutton as shown in Figure 7 Figure 7 Reset Connections Open Collector Output Connections Output connections are made to two terminals labeled OUTPUT Connect to an input device such as alarm indicator or pulse counter as shown in Figure 8 or drive a relay as shown in Figure...

Page 10: ...re disabled when a mechanical button is pressed and will automatically be re enabled after 60 seconds of inactivity The SafeTouch buttons are designed to filter normal levels of ambient interference and to protect against false triggering however it is recommended that the SafeTouch buttons be disabled slide switch to LOCK if there is an infrared interference source in line of sight to the display...

Page 11: ...cess the Advanced features of the meter Right Reset Button Press the Right arrow button to move to the next digit or decimal position during programming Up Display Button Press the Up arrow button to scroll through the menus decimal point or to increment the value of a digit Enter Button Press the Enter button to access a menu or to accept a setting The meter displays various functions and message...

Page 12: ...ogram menu sCalE Scale Enter the Scale menu Cal Calibrate Enter the Calibrate menu Inpt1 Input 1 Calibrate input 1 signal or program input 1 value DspL1 Display 1 Program display 1 value Inpt2 Input 2 Calibrate input 2 signal or program input 2 value DsPl2 Display 2 Program display 2 value Span Error Span Error Error calibration not successful check signal TbASE Time Base Enter the Time Base menu ...

Page 13: ... digit being changed blinks Press the Enter button at any time to accept a set ting or MENU button to exit without saving changes The decimal point is set using the Right or Up arrow button in the Setup decimal point menu Setting the Decimal Point dec PT Rate decimal point may be set with up to four decimal places or with no decimal point at all Total decimal point may be set with up to six decima...

Page 14: ...te functions are exclusive of each other The meter uses the last function pro grammed Only one of these methods can be em ployed at a time The Scale and Calibrate functions can use up to 32 points default is 2 The number of points should be set in the Advanced Features menu under the Multi Point Linearization lnear menu se lection prior to scaling and calibration of the meter see Advanced Features...

Page 15: ...e Enter key before calibration will take effect Minimum Input Span The minimum input span is the minimum difference between input 1 and input 2 signals required to complete the calibration or scaling of the meter The minimum span is 0 10 mA If the minimum span is not maintained the meter reverts to input 2 allowing the appropriate input signals to be applied Re Calibrating the Internal Calibration...

Page 16: ...ess the Enter button at any time to accept a set ting or Menu button to exit without saving changes Setting the Tag Display tag The meter can be set to display a combination of sev en alphanumeric characters for engineering units e g GALLONS or for identification e g TANK 3 Press Right arrow to select next unit and Up arrow to increment unit To automatically cycle the lower display between total r...

Page 17: ... to its password protect ed condition Disabling Password Protection To disable the password protection access the Password menu and enter the correct password twice as shown below The meter is now unprotected until a new password is entered If the correct six digit password is entered the meter displays the message UNLOCKD unlocked and the protection is disabled until a new password is programmed ...

Page 18: ...t to rate Total Total Assign alarm output to total Set Set Point Program set point Reset Reset Point Program reset point Pulse Pulse Output Program pulse output Scaler Count MAX HZ Frequency Program pulse output maximum frequency Funct Function Enter advanced function menu Lnear Linear Set linear scaling Squar Square Root Set square root extraction Prog E Programmable Exponent Set programmable exp...

Page 19: ... are programmed the same output will reset one count below set point Total alarm trip point program total set point Alarm reset is triggered by total reset There is no reset parameter entered for total If automatic total reset is enabled this setting will be the trigger point for the timer It is not necessary to have the output wired for automatic reset function to work To acknowledge an alarm pre...

Page 20: ...a current source instead of using input scaling This process will override previously programmed scaling points Apply a live signal using a known accurate signal source InP 1 32 and then enter the corresponding meter reading disp 1 32 for that input signal level The use of a calibrated signal source is strongly recommended Important Navigation Note After entering the last display value the lineari...

Page 21: ...eraging time and so the longer the display may take to find its final value The filter contains a noise filter bypass feature so that while small variations in the signal will be filtered out large abrupt changes to the input signal are dis played immediately Internal Calibration ICAL There is no need to recalibrate the meter for milliamps when first received from the factory The meter is factory ...

Page 22: ...d hold Reset button when INFO is shown Press Enter when RESET DFALTS prompt is shown Note If Enter is not pressed within three seconds the prompt will stop flashing return to showing INFO Factory Defaults User Settings The following table shows the factory setting for most of the programmable parameters on the meter Next to the factory setting the user may record the new setting for the particular...

Page 23: ... to exit Max Min display readings Display response is too slow Check filter setting to see if it can be lowered to LO or OFF If the display locks up or the meter does not respond at all Perform hard reset by shorting S and S terminals Backlight does not appear Backlight is intended for viewing assistance in dim lighting conditions It may not be noticeable under good lighting conditions Check conne...

Page 24: ...ction or increment digit Cycle through maximum minimum and mA display mode ENTER Accept selection value and move to next selection Acknowledge alarms Max Min Mode While in Run Mode pressing Up Arrow will initiate MAX MIN Mode Up Arrow toggles between MAX MIN displays and Right Arrow resets the MAX MIN to the current value Press Menu or wait 10 seconds to return to Run Mode Pressing Enter Ack will ...

Page 25: ...0079 0 2009 EN 60079 1 2007 EN 60079 31 2009 EN 61000 6 4 2004 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 2018 EN 60079 1 2014 EN 60079 31 2014 EN 61000 6 4 2019 EN 61010 1 2010 A1 2019 and EN 61326 2013 and there were no major technical changes affecting the latest techni...

Page 26: ...5 8990 www predig com LIM6820_J SFT049 Ver 1 200 up 05 20 Contact Precision Digital Technical Support Call 800 610 5239 or 508 655 7300 Fax 508 655 8990 Email support predig com Sales Support Call 800 343 1001 or 508 655 7300 Fax 508 655 8990 Email sales predig com Place Orders Email orders predig com For the latest version of this manual please visit www predig com ...

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