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PD6720 Field-Mount Loop-Powered Rate/Totalizer 

Instruction Manual 

 

22

 

Operation 

Front Panel Buttons Operation 

Button 
Symbol 

Description 

 

Press to enter or exit 
Programming Mode or exit 
Max/Min readings 

 

Press to reset Max/Min readings 

 

Press to display Max/Min 
readings alternately 

 

Press to display Max or Min 
reading indefinitely while 
displaying Max or Min 

 

Maximum & Minimum Readings 
(

MAXIMUM 

MINIMUM

The maximum and minimum (peak & valley) readings 
reached by the process are stored in the meter since 
the last reset or power-up. The meter shows 

MAXIMUM

 

or 

MINIMUM

 to differentiate between run mode and 

max/min display. Press 

Enter

 to remain in Max/Min 

display mode. If 

Enter 

is not pressed, the Max/Min 

display readings will time out after ten seconds. The 
meter will return to display the actual reading. 

 

 

Reset Meter to Factory Defaults 

When the parameters have been changed in a way 
that is difficult to d

etermine what’s happening, it might 

be better to start the setup process from the factory 
defaults. 

Instructions to load factory defaults: 

Enter the 

Advanced

 features menu. 

Press and 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 application. 

Model: ____________________________________ 
S/N: ______________________________________ 

Date: _____________________________________ 

Parameter 

Display 

Default 
Setting  

User 
Setting

 

 

Programming 

PROGRAM 

Scale 

 

Input 1 

 

INPt1

 

4.000 mA 

 

Display 1

 

Dspl1

 

4.000 

 

Input 2 

 

INPt2

 

20.00 mA 

 

Display 2

 

Dspl2

 

20.000 

 

Decimal point 
rate

 

Dd.ddd

 

3 places 

 

Decimal point 
total

 

Dddddd.dd

 

2 places 

 

Tag

 

tag

 

Off 

 

Time Base 

tbase 

Minute 

 

Conversion 
Factor 

TotCF 

1.0000 

 

Total Reset 
Function 

T rst 

Manual - 
Enabled 

 

Password 

PASSWRD 

00000 
(unlocked) 

 

Programming 

PROGRAM 

Scale 

 

Advanced Features 

Output

 

OUTPUT

 

Off 

 

Function

 

FUNCTN

 

Linear 

 

Cutoff 

CUTOFF 


(disabled) 

 

Filter 

FILTER 

Low 

 

MENU

RESET

DISPLAY

 

ENTER

 

Summary of Contents for PD6720 Series

Page 1: ...Display Rate in Units per Second Minute Hour or Day Display Open Channel Flow with Programmable Exponent Feature Open Collector Pulse or Alarm Output Display Mountable at 0 90 180 270 SafeTouchTM Thro...

Page 2: ...Terms Conditions on www predig com for complete details 2020 Precision Digital Corporation All rights reserved Introduction The PD6720 is a rugged field mount loop powered rate totalizer fully featur...

Page 3: ...ime 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...

Page 4: ...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 Externa...

Page 5: ...Environmental Operating temperature range 40 to 75 C Storage temperature range 40 to 75 C Relative humidity 0 to 90 non condensing Connections Screw terminals accept 12 to 22 AWG wire Enclosure NEMA...

Page 6: ...able from 0 to 99 999 seconds Open Collector Output Rating Isolated open collector sinking NPN 30 VDC 150 mA max Alarm Output Assign to rate for high or low alarm trip point Assign to total for total...

Page 7: ...and set the display module aside Unpacking Remove the meter from box Inspect the packaging and contents for damage Report damages if any to the carrier If any part is missing or the meter malfunction...

Page 8: ...t from external supply OUTPUT NPN open collector output positive OUTPUT NPN open collector output negative RESET Contact closure alarm acknowledge pull up to 3 VDC RESET Contact closure alarm acknowle...

Page 9: ...ions 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 Outpu...

Page 10: ...sors are 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 interfer...

Page 11: ...nds to access 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 b...

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...

Page 13: ...w to select next digit and Up arrow to increment digit The digit being changed blinks Press the Enter button at any time to accept a setting or MENU button to exit without saving changes The decimal p...

Page 14: ...functions are exclusive of each other The meter uses the last function programmed Only one of these methods can be employed at a time The Scale and Calibrate functions can use up to 32 points default...

Page 15: ...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...

Page 16: ...on choose man dsabl To reset total upon total alarm set point choose auto enter a time delay t dly and proceed to programming the set point see Alarm Output alrm on page 19 Press the Enter button at a...

Page 17: ...returns to its password protected 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 n...

Page 18: ...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...

Page 19: ...deadband is one display count If set and reset points 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 tot...

Page 20: ...rent 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 correspo...

Page 21: ...ging 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 abrup...

Page 22: ...he factory defaults Instructions to load factory defaults Enter the Advanced features menu Press and hold Reset button when INFO is shown Press Enter when RESET DFALTS prompt is shown Note If Enter is...

Page 23: ...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 rese...

Page 24: ...on 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...

Page 25: ...990 www predig com LIM6720_C SFT049 Ver 1 200 up 07 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 34...

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