PRECISION DIGITAL Loop Leader PD689 User manual

PRECISION DIGITAL CORPORATION
89 October Hill Road • Holliston MA 01746 USA
Tel [phone] • Fax [phone] www.predig.com
PD684 & PD689 LOOP-POWERED
RATE/TOTALIZERS
Instruction Manual
2 V drop (5.7 V with backlight)
5-Digit LCD, 0.6" (15.2 mm) High
3 Digit Automatic Total Overflow
Rate in Second, Minute, Hour, or Day
Open Collector Pulse or Alarm Output
Custom Engineering Units
20-Segment Bargraph Display
Type 4X, NEMA 4X, IP65 Front
Maximum & Minimum Display
Linear, Square Root, or Programmable Exponent
Non-Volatile Memory – No Battery Needed
Loop-
Powered
Backlight
Standard!
PD689 only

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
2
Disclaimer
The information contained in this document is subject to change
without notice. Precision Digital makes no representations or war-
ranties with respect to the contents hereof, and specifically disclaims
any implied warranties of merchantability or fitness for a particular
purpose.
Registered Trademarks
NORYL®and LEXAN®are registered trademarks of SABIC Innova-
tive Plastics. All other trademarks mentioned in this document are
the property of their respective owners.
© 2015 Precision Digital Corporation. All rights reserved.
Visit our Web Site
http://www.predig.com

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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INTRODUCTION
The PD689 is an intrinsically safe and non-incendive loop-powered
rate/totalizer approved for hazardous area locations. The PD684 is a
general-purpose loop-powered rate/totalizer for safe area applications.
The four front panel buttons make the setup and programming an easy
task. Five digits, bargraph, engineering units, scientific notation, rate &
total indication, and trend arrows provide a clear and attractive presen-
tation of the process.
The square root and programmable exponent functions allow for condi-
tioning of signals from non-linear transmitters without adding external
components to the system and the convenience of scaling without a
calibrated signal source make the PD684 & PD689 the ideal choice for
flow rate & total display applications.
ORDERING INFORMATION
Model Description
PD683-0K0* Loop-Powered Panel Meter for Safe Area
PD684-0K1 Loop-Powered Rate/Totalizer for Safe Area
PD688-0K0* ATEX/FM/CSA Approved Loop-Powered Panel Meter
PD689-0K1 ATEX/FM/CSA Approved Loop-Powered Rate/Totalizer
Enclosures and Accessories
Model Meters Description Mounting
PDA2407 1 Plastic NEMA 4X Enclosure Inside Cover
PDA2410 3 Plastic NEMA 4X Enclosure Inside Cover
PDA2411 2 Plastic NEMA 4X Enclosure Inside Cover
PDA23XX 1-10 Economical Plastic NEMA 4X Enclosure Through Door
PDA25XX 1-10 Plastic NEMA 4X Enclosure Through Door
PDA26XX 1-6 Stainless Steel NEMA 4X Enclosure Through Door
PDA27XX 1-6 Steel NEMA 4 Enclosure Through Door
PDA2801* 1 Low-Cost Plastic NEMA 4X Enclosure Through Cover
PDA2812 2 Low-Cost Plastic NEMA 4X Enclosure Through Cover
Note: XX = the last two digits of the model number.
Go to www.predig.com to find individual part numbers.
* Quick Shipment Program product, typically shipped within 2 working days

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Table of Contents
INTRODUCTION------------------------------------------------------------ 3
ORDERING INFORMATION--------------------------------------------- 3
SPECIFICATIONS---------------------------------------------------------- 6
General-------------------------------------------------------------------------------6
Input-----------------------------------------------------------------------------------7
Open Collector Output----------------------------------------------------------8
PD689 COMPLIANCE INFORMATION------------------------------- 9
Ratings and Approvals ---------------------------------------------------------9
SAFETY INFORMATION ------------------------------------------------- 9
INSTALLATION------------------------------------------------------------10
Unpacking------------------------------------------------------------------------- 10
Panel Mounting------------------------------------------------------------------ 10
PD684 Connections------------------------------------------------------------ 11
4-20 mA Input Connections ------------------------------------------------ 12
Open Collector Output Connections ------------------------------------- 13
SETUP AND PROGRAMMING ----------------------------------------14
Front Panel Buttons & Status Indicators------------------------------- 15
Main Menu Display Functions & Messages---------------------------- 16
Main Menu ------------------------------------------------------------------------ 18
Setting Numeric Values ------------------------------------------------------ 18
Setting Up the Meter (setup)------------------------------------------------ 19
Setting the Decimal Point (dec.PT) --------------------------------------- 20
Setting the Units Display (units)----------------------------------------- 21
Setting the Time Base (t.base)-------------------------------------------- 22
Setting the Total Conversion Factor (tot.CF) -------------------------- 22
Manual or Automatic Total Reset Function (t rST) ----------------- 23
Display Rate or Total Mode (Dsply) ------------------------------------- 24
Programming the Meter (prog) ------------------------------------------- 25
Scaling the Meter (sCalE) -------------------------------------------------- 26
Calibrating the Meter (Cal)------------------------------------------------- 27
Recalibrating the Internal Calibration Reference (ICal)------------ 27
Setting Up the Bargraph (GrapH) ----------------------------------------- 28
Setting Up the Password (pass) ------------------------------------------- 29
Locking the Meter ------------------------------------------------------------ 29
Unlocking the Meter---------------------------------------------------------- 30

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Advanced Features Menu---------------------------------------------------- 31
Advanced Features Menu & Display Messages ---------------------- 32
Noise Filter (fltEr) ---------------------------------------------------------- 33
Noise Filter Bypass (bypAs) ----------------------------------------------- 33
Contrast (contr) -------------------------------------------------------------- 33
Alarm & Pulse Output (out)------------------------------------------------ 34
Math Functions (lnear, Squar, Prog.E, Cutof)----------------------- 36
Internal Calibration (ICal)-------------------------------------------------- 37
Information Menu (info)---------------------------------------------------- 38
OPERATION----------------------------------------------------------------38
Front Panel Buttons Operation -------------------------------------------- 38
Rate or Total Display Readings-------------------------------------------- 39
Maximum & Minimum Readings (Max& MiN)--------------------------- 40
MOUNTING DIMENSIONS----------------------------------------------41
Reset Meter to Factory Defaults------------------------------------------- 42
Factory Defaults & User Settings----------------------------------------- 43
TROUBLESHOOTING----------------------------------------------------44
Troubleshooting Tips --------------------------------------------------------- 44
QUICK USER INTERFACE REFERENCE GUIDE----------------45
Table of Figures
Figure 1. Panel Cutout and Mounting...............................................10
Figure 2. PD684 & PD689 Rear View.................................................11
Figure 3. PD684 Input Connections with Backlight.........................12
Figure 4. PD684 Input Connections without Backlight ...................12
Figure 5. PD684 Connection to Device with Internal Pull-Up .........13
Figure 6. PD684 Connection to External Relay................................13
Figure 7. Meter Dimensions – Side View..........................................41
Figure 8. Case Dimensions – Top View............................................41

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
DISPLAY Five digits
(-99999 to 99999)
0.60" (15.2 mm) high, 7-segment,
automatic lead zero blanking.
Four characters
(Engineering Units)
0.25" (6.4 mm) high, 14 segment.
Bargraph 20-segment, 0% to 100% indication.
Trend arrows Up and down trend indication.
Backlight Orange (intensity varies with signal)
DISPLAY
UPDATE RATE 2.5/second
OVERRANGE Display flashes 99999
UNDERRANGE Display flashes -99999
PROGRAMMING
METHOD Four front panel buttons
NOISE FILTER Programmable from 1 to 199
RECALIBRATION Recalibration is recommended at least every 12 months.
MAX/MIN
DISPLAY Max/min readings reached by the process are stored until reset by the user or until power to the meter is turned off.
PASSWORD Programmable password restricts modification of
programmed settings.
NON-VOLATILE
MEMORY All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
NORMAL MODE
REJECTION 64 dB at 50/60 Hz
ENVIRONMENTAL Operating temperature range: -20 to 65°C (-40°C allowed)*
Storage temperature range: -40 to 65°C
Relative humidity: 0 to 90% non-condensing
*Below -20°C, the LCD becomes less readable.
CONNECTIONS Removable screw terminals accept 12 to 22 AWG wire
ENCLOSURE &
MATERIALS 1/8 DIN, high impact plastic, UL 94V-0, color: gray NORYL® Polyphenylene Ether & Polystyrene blend (PPE
PS) Resin
LEXAN® Polycarbonate (PC) Film
MOUNTING 1/8 DIN panel cutout required. Two panel mounting brack-
et assemblies provided

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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TIGHTENING
TORQUE Screw terminal connectors: 4.5 lb-in (0.5 Nm) Mounting screws: 8.0 lb-in max. (0.9 Nm)
OVERALL
DIMENSIONS 4.68" x 2.45" x 3.79" (119 mm x 62 mm x 96 mm) (W x H x D)
WEIGHT 5.7 oz (162 g)
WARRANTY 3 years parts and labor
EXTENDED
WARRANTY 1 or 2 years, refer to Price List for details
Input
ACCURACY ±0.03% of span ±1 count,
square root and programmable exponent: 10-100% FS
FUNCTION Linear, square root, or programmable exponent
LOW-FLOW
CUTOFF -99999 to 99999 (-99999 disables cutoff function)
TEMPERATURE
DRIFT 50 PPM/C from -40 to 65C ambient
DECIMAL POINT Up to four decimal places:
d.dddd, dd.ddd, ddd.dd,dddd.d,or ddddd
TOTAL DISPLAY
OVERFLOW Total up to 99,999,999 with total overflow feature. “oF” is
displayed to the left of total overflow value (e.g. oF999).
TOTALIZER Calculates total based on rate, time base of second, mi-
nute, hour, or day, and field programmable multiplier; stored
in non-volatile memory upon power loss.
TOTALIZER
RESET User selectable via panel button, time delay, or protected
CALIBRATION
RANGE An Error message will appear if input 1 and input 2 signals
are too close together.
Input
Range Minimum Span Input 1 & Input 2
4-20 mA 0.40 mA
VOLTAGE DROP Without Backlight With Backlight
2.0 V maximum 5.7 V maximum
EQUIVALENT
RESISTANCE 100 Ω@ 20 mA 285 Ω@ 20 mA
INPUT
OVERLOAD Over current protection to 2 A max.

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Open Collector Output
RATING Isolated open collector, 30 VDC @ 175 mA max.
ALARM OUTPUT Assign to rate for high or low alarm trip point.
Assign to total for total alarm trip point.
DEADBAND 0-100% FS, user selectable
ACKNOWLEDGE Front panel ACK button resets output and screen indication.
PULSE OUTPUT
K-FACTOR K-factor programmable from 0.0001 to 99999. One pulse is generated for every total increment selected (e.g. K-factor
value of 100 will generate one pulse every time the total is
incremented by 100 units).
If the pulse output exceeds the programmed output fre-
quency, pulses are accumulated as pending and are not
lost. Pulses will continue to output until the buffer is emptied
or the total is reset from the front panel.
PULSE OUTPUT
FREQUENCY Programmable frequency: 2, 4, 8, 16, 32, 64, 128 Hz. Minimum pulse width: 3.9 ms @ 128 Hz
Maximum pulse width: 250 ms @ 2 Hz
Factory default pulse width: 31 ms @ 16 Hz

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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PD689 COMPLIANCE INFORMATION
Ratings and Approvals
FM & CSA Certified as intrinsically safe with entity for use in:
Class I, Div 1, 2, Groups ABCD
Class II, Div 1, Groups EFG
Class II, Div 2, Groups FG
Class III, Div 1, 2
Class 1, Zone 0, Group IIC
Non-incendive: Suitable for use in Class I, Div 2, Groups ABCD;
Class II, Div 2, Groups FG; Class III, Div 2.
Entity Parameters: Ui: 30 V; Ii: 175 mA; Ci: 0; Li: 0; Pi: 1.0 W
ATEX II 1G
Ex ia IIC T4
IP65
Ta = -40°C to 65°C
CE EMC Emissions and Immunity:
EN 61326:2006 EMC requirements for Electrical equipment for
measurement and laboratory use – Industrial
IEC 61010-1:2010 & EN 61010-1:2010, including Group and
National Differences as they apply for AU, CA, US and KR
Special Conditions for Safe Use:
The permitted ambient temperature range for the PD689 is -40°C to 65°C.
Year of Construction
This information is contained within the serial number with the first four
digits representing the year and month in the YYMM format.
For FM/CSA applications: The PD689 installation must be performed
in accordance with Control Drawing LIM688-2
For European Community: The PD689 must be installed in accord-
ance with the ATEX directive 94/9/EC, the product certificate
FM08ATEX0058X, and LIM688-2
SAFETY INFORMATION
!
Installation and service should be
performed only by trained
service personnel. Service requiring
replacement of internal components
must be performed at the factory.
CAUTION: Read complete
instructions prior to installation
and operation of the meter.

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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INSTALLATION
There is no need to remove the meter from its case to com-
plete the installation, wiring, and setup of the meter.
Unpacking
Remove the meter from box. Inspect the packaging and con-
tents for damage. Report damages, if any, to the carrier.
If any part is missing or the meter malfunctions, please contact
your supplier or the factory for assistance.
Panel Mounting
Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm
x 45 mm). Refer to Mounting Dimensions, page 41 for more details.
Clearance: allow at least 4" (102 mm) behind the panel for wiring.
Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).
Minimum steel/stainless steel panel thickness to maintain watertight
rating: 0.06" (1.5 mm).
Note: A steel or stainless steel panel rather than plastic is
recommended in cases where a watertight or dust-tight seal is
required between the meter and the panel.
Remove the two mounting brackets provided with the meter (back-off
the two screws so that there is ¼" (6.4 mm) or less through the
bracket. Slide the bracket toward the front of the case and remove).
Insert meter into the panel cutout.
Install mounting brackets and tighten the screws against the panel.
To achieve a proper seal, tighten the mounting bracket screws
evenly until meter is snug to the panel along its short side. DO NOT
OVER TIGHTEN, as the rear of the panel may be damaged.
Panel
Gasket
Mounting
Bracket
Mounting
Screw
Removable
Connector
3.622" (92mm)
1.772"
(45mm) Panel Cutout
to DIN 43700
Square Corners to 0.060"
(1.5mm) Max Radius
A
B
Tolerances:
A: +0.032 (+0.8mm)
-0.000 (-0.0mm)
B: +0.024 (+0.6mm)
-0.000 (-0.0mm)
Figure 1. Panel Cutout and Mounting
See page 41 for Mount-
ing Dimensions

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Wiring Connections
Signal connections are made to a four-terminal and a two-terminal re-
movable connector. This section is only intended for the PD684.
PD689 installation must be performed in accordance with Control
Drawing LIM688-2 in order to meet agency approval ratings.
!
Observe all safety regulations. Electrical wiring
should be performed in accordance with all agency
requirements and applicable national, state, and
local codes to prevent damage to the meter and
ensure personnel safety.
S+ S- B+ B- O+ O-
Figure 2. PD684 & PD689 Rear View

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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4-20 mA Input Connections
Input connections are made to a four-terminal connector labeled
S+|S-|B+|B-. The loop-powered backlight is an optional configuration and
requires a total maximum voltage drop of 5.7 V. The backlight is recom-
mended for dim lighting conditions and is enabled when wired as shown
in Figure 3. It may be bypassed if installed in bright lighting conditions to
reduce the maximum voltage drop to 2.0 V as shown in Figure 4.
S
+
S
- B+ B-
4-20 mA
Transmitter
Power
Supply
Figure 3. PD684 Input Connections with Backlight
S
+
S
- B+ B-
4-20 mA
Transmitter
Power
Supply
Figure 4. PD684 Input Connections without Backlight

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Open Collector Output Connections
Output connections are made to a two-terminal connector labeled
O+|O-. Connect to an input device such as alarm indicator or pulse coun-
ter as shown in Figure 5, or drive a relay as shown in Figure 6.
To avoid damaging the PD684’s amplifying components, use care
not to wire incorrectly or exceed output ratings. A diode, such as
1N4000 series, will provide protection from relay transients.
Figure 5. PD684 Connection to Device with Internal Pull-Up
O+ O-
5-30 VDC
175 mA MAX
Figure 6. PD684 Connection to External Relay

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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SETUP AND PROGRAMMING
There is no need to recalibrate the meter for
milliamps when first received from the factory.
The meter is factory calibrated for milliamps
prior to shipment. The calibration equipment
is certified to NIST standards.
Overview
There are no jumpers involved in the setup process of the meter.
Setup and programming is done through the front panel buttons.
After all connections have been completed and verified, apply power to
the loop.
For
Quick User Interface Reference Guide
go to page 45

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Front Panel Buttons & Status Indicators
ACKMAXRESETMENU
Button
Symbol Description Symbol Status
Menu 0% Bargraph
minimum
Right arrow/Reset 100% Bargraph
maximum
Up arrow/Max Increasing trend
Enter/Ack Decreasing trend
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 or decimal
position during programming.
Press the Up arrow button to scroll through the menus, decimal
point, or to increment the value of a digit.
Press the Enter/Ack button to access a menu or to accept a setting.
Press and hold the Menu button for five seconds to access the
Advanced Features of the meter.

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Main Menu Display Functions & Messages
The meter displays various functions and messages during setup, pro-
gramming, and operation. The following table shows the main menu
functions and messages in the order they appear in the menu.
Display Parameter Action/Setting
setuP Setup Enter Setup menu
DeC..pt Decimal
point Enter Decimal Point menu
rate Rate Set Rate decimal point
total Total Set Total decimal point
units Units Enter the Units menu
rate Rate Set Rate units
total Total Set Total units
TbASE Time Base Enter the Time Base menu
sec Second Units per second
min Minute Units per minute
Hour Hour Units per hour
day Day Units per day
Tot.CF Conversion
Factor Enter the Conversion Factor menu
T rST Total Reset Enter the Total Reset menu
Auto Automatic Automatic Total Reset
tdly Time Delay Automatic Reset Time Delay
man Manual Manual Total Reset
Enabl Enable Enable Manual reset
dsabl Disable Disable Manual reset
dSPLY Display Enter the Display menu
r-t Rate-Total Display Rate or Total
rate Rate Display Rate only
total Total Display Total only
togle Toggle Toggle between Rate & Total every 10 sec

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Display Parameter Action/Setting
prog Program Enter the Program 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
Error Error Error, calibration not successful, check signal
Graph Graph Enter the Graph menu
Pass Password Enter the Password menu
unloc Unlocked Program password to lock meter
Locd Locked Enter password to unlock meter
99999
-99999 Flashing
display Overrange condition
Underrange condition
of Overflow Total Overflow condition

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Main Menu
The main menu consists of the most commonly used functions: Setup,
Program, and Password.
Press Menu button to enter Programming Mode then press Up
arrow button to scroll main menu.
9.2846GPS setup prog pass
Run
Mode
Press Menu, at any time, to exit and return to Run Mode. Changes
made to settings prior to pressing Enter/Ack are not saved.
Changes to the settings are saved to memory only after pressing
Enter/Ack.
The display moves to the next menu every time a setting is
accepted by pressing Enter/Ack.
Setting Numeric Values
The numeric values are set using the Right and Up arrow buttons.
Press Right arrow to select next digit and Up arrow to increment digit.
The digit being changed blinks.
Press the Enter/Ack button, at any time, to accept a setting or Menu
button to exit without saving changes.
04.000 04.000 05.000
Increment Digit
Value
Select Next Digit Accept Setting
The decimal point is set using the Right or Up arrow button in the Set-
up-decimal point menu.

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Setting Up the Meter (setup)
The Setup menu is used to select:
1. Rate and total decimal point position
2. Rate and total engineering units display
3. Time base
4. Total conversion factor
5. Manual or automatic total reset function
6. Rate or total display mode
Press the Enter/Ack button to access any menu or press Up arrow but-
ton to scroll through choices. Press the Menu button to exit at any time.
setuP deC.Pt
units
t.base
t rst
tot.CF
dsply

PD684 & PD689 Loop-Powered Rate/Totalizers Instruction Manual
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Setting the Decimal Point (dec.PT)
Decimal point may be set with up to four decimal places or with no dec-
imal point at all. Rate decimal and total decimal are programmed indi-
vidually.
Pressing the Right or Up arrow moves the decimal point one place to
the right until no decimal point is displayed, then it moves to the left
most position.
deC.pt
ddddd
Select Rate/Total
or
rate
total
Select Decimal Point