Precision Digital Corporation Loop Leader PD6600 Series User manual

PD6600 Series Loop-Powered Process Meters
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•1/8 DIN Loop-Powered Process Meters with NEMA 4X, IP65 Front
•4-20 mA Input Displayed with ±0.02% FS Accuracy
•1.5 Volt Drop (4.5 Volt Drop with Backlight)
•0.7" (17.8 mm) 5 Alphanumeric Characters Top Display
•0.4" (10.2 mm) 8 Alphanumeric Characters Bottom Display
•20-Segment Bargraph with Numeric Percent Indication, Optional
•Shallow Depth Case Extends Only 3.6" (91 mm) Behind Panel
•(2) Open Collector Outputs Standard; Assigned to Pulse, Alarm, Timer, or Stopwatch
•(2) Optional Loop-Powered Solid State Relays; Assigned to Alarm, Control, Timer, or Stopwatch
•Stopwatch & TimerFunctions to Drive Relays & Open Collectors
•Optional Isolated 4-20 mA Analog Output
•Relay Pump Alternation Based on Level and Runtime
•Display Relay Runtime & Cycle Count via Relay Info Menu
•Round Horizontal Tank Function; Just Enter Diameter & Length
•32-Point Linearization, Square Root Extraction and Programmable Exponent Function
•Free PC-Based MeterView XL USB Programming Software
•HART®Protocol Transparent
•Loop-Powered Backlight with Red Backlight for Alarm Conditions
•Safe Area Operating Temperature Range: -40 to 167°F (-40 to 75°C)
•Conformal Coated PCBs for Dust & Humidity Protection
•Password Protection
•UL & C-UL 61010 Listed for Electrical Safety
•UL & C-UL Listed as Intrinsically Safe and Nonincendive
•ATEX and IECEx Certified as Intrinsically Safe
•Wide Assortment of NEMA 4X Enclosures for up to Ten Meters
•Light / Horn & Reset Button Accessory
•Control Station Accessory for Remote Operation of Digital Input
•3-Year Warranty
PD6606 & PD6608 Only
IECEx
All Models

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Table of Contents
Introduction......................................................................................................... 4
Key Features....................................................................................................... 5
Ordering Information.......................................................................................... 8
General Purpose Instruments....................................................................... 8
Hazardous Area Instruments ........................................................................ 8
Enclosures...................................................................................................... 8
Accessories.................................................................................................... 8
Specifications................................................................................................... 11
Display .......................................................................................................... 11
General.......................................................................................................... 11
Input .............................................................................................................. 11
Common Open Collector & Relay (Alarm) Specifications ........................ 12
Open Collector Outputs............................................................................... 12
Solid State Relays........................................................................................ 12
4-20 mA Transmitter Output........................................................................ 12
On-Board Digital Input................................................................................. 12
MeterView XL Programming Software........................................................ 13
General Compliance Information.................................................................... 13
Electromagnetic Compatibility.................................................................... 13
PD6606 & PD6608 Compliance Information................................................... 14
Safety ............................................................................................................ 14
Hazardous Area Approvals ......................................................................... 14
EU Declaration of Conformity............................................................................. 15
Safety Information............................................................................................ 15
Installation......................................................................................................... 16
Unpacking..................................................................................................... 16
Panel Mounting Instructions....................................................................... 16
MeterView XL Programming Software........................................................ 17
MeterView XL Software Installation ........................................................... 17
Connecting to the Computer...................................................................... 18
Specifications............................................................................................. 18
Dimensions....................................................................................................... 19
Connections...................................................................................................... 19
Connectors Labeling.................................................................................. 19
Wiring Diagrams............................................................................................... 20
Safe Area Current Loop (4-20 mA) Connections ....................................... 20
Safe Area Digital Input Connection............................................................ 20
Safe Area 4-20 mA Output Connections.................................................... 20
Safe Area Solid State Relay Connections.................................................. 20
Safe Area Open Collector Outputs............................................................. 20
Remote Operation of Meter........................................................................ 21
Wiring Connections for MOD-LH Models................................................... 21
Setup and Programming.................................................................................. 22
Overview....................................................................................................... 22
MeterView XL Programming Software........................................................ 22
Front Panel Buttons and Status LCD Indicators ....................................... 22
Display Functions & Messages................................................................... 23
Main Menu..................................................................................................... 27
Setting Numeric Values ............................................................................. 27
Scaling the 4-20 mA Input (INPUT).................................................................. 27
Available Unit Classes and Units............................................................... 28
Setting Custom Units (CUSTOM)................................................................. 28

PD6600 Series Loop-Powered Process Meters
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Setting the Display Features (DISPLAY).................................................... 29
Changing the Engineering Units (UNITS).................................................. 29
Changing the Decimal Point (DEC.PT)........................................................ 29
Enabling or Disabling Commas on the Bottom Display (COMMA) ............... 29
Display Capabilities Optimization (TOP and BOTTOM)................................ 29
Configuring the Display (TOp and BOTTOM)............................................... 30
Programming the Bargraph (BARGRAPH) (PD6604 & PD6608 Only)......... 30
Programming the Outputs (OUTPUT).......................................................... 31
Open Collector Outputs ( OPEN COLLECTR ) ................................................ 31
Solid State Relay Outputs (RELAY) ........................................................... 34
Isolated 4-20 mA Output (4-20 mA)......................................................... 37
Output Manual Control (CONTROL)............................................................ 37
Advanced Features Menu (ADVANCED)....................................................... 38
Advanced Process Variable Setup (ADV PV SETUP)............................... 38
Low-Flow Cutoff (CUTOFF) ........................................................................ 41
Noise Filter (FILTER)................................................................................ 42
Enabling Password Protection (PASSWRD)................................................ 42
Programmable Function Keys User Menu (USER)..................................... 42
Tare (TARE)............................................................................................... 42
Changing System Settings (SYSTEM)........................................................ 44
Meter Operation................................................................................................ 46
Front Panel Buttons Operation................................................................... 46
Function Keys Operation............................................................................. 46
Digital Input Operation................................................................................. 46
Maximum/Minimum Readings..................................................................... 46
Runtime & Cycle Count (INFO)................................................................... 47
Changing Engineering Units....................................................................... 47
Troubleshooting............................................................................................... 48
Reset Meter to Factory Defaults.................................................................. 48
Determining Software Version.................................................................... 48
Factory Default Settings............................................................................. 49
Troubleshooting Tips................................................................................... 50
Table of Figures
Figure 1. 1/8 DIN Panel Cutout Dimensions................................................... 16
Figure 2. Panel Mounting Details .................................................................... 16
Figure 3. Meter Dimensions - Side View......................................................... 19
Figure 4. Meter Dimensions - Front View ....................................................... 19
Figure 5. Connector Labeling for PD660#-LNN.............................................. 19
Figure 6. Connector Labeling for PD660#-L2N with 2-Solid State Relays... 19
Figure 7. Connector Labeling for PD660#-L3N with 4-20 mA Output........... 19
Figure 8. Connector Labeling for PD660#-L5N with 2 Solid State Relays
& 4-20 mA Output............................................................................. 19
Figure 9. 4-20 mA Input Connection without Backlight ................................ 20
Figure 10. 4-20 mA Input Connection with Backlight.................................... 20
Figure 11. Digital Input Connections .............................................................. 20
Figure 12. 4-20 mA Output Connections ........................................................ 20
Figure 13. Solid State Relay Connections...................................................... 20
Figure 14. Open Collector Output Connections............................................. 20
Figure 15. PDA2361-R Control Station Connected to PD6604...................... 21
Figure 16. Light / Horn and Button (MOD-LH) Connected to PD6604.......... 21

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Disclaimer
The information contained in this document is
subject to change without notice. Precision Digital
Corporation makes no representations or
warranties with respect to the contents hereof;
and specifically disclaims any implied warranties
of merchantability or fitness for a particular
purpose.
•Read complete instructions prior to installation
and operation of the meter.
•Risk of electric shock or personal injury.
•This product is not recommended for life support
applications or applications where malfunctioning
could result in personal injury or property loss.
Anyone using this product for such applications
does so at his/her own risk. Precision Digital
Corporation shall not be held liable for damages
resulting from such improper use.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under
“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this
limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
Registered Trademarks
All trademarks mentioned in this document are
the property of their respective owners.
© 2022 Precision Digital Corporation.
All rights reserved.
Introduction
These loop-powered 1/8 DIN digital panel meters can
be installed virtually anywhere to provide convenient
and informative display of any 4-20 mA signal. One of
the most convenient features of these instruments is
their dual line display which is typically used to display
the process variable on the 5-digit alphanumeric top
display and the units of measure or a tag on the 8-
digit alphanumeric bottom display. Another common
setup is to display the input in one scale on the top
display (such as feet) and in another scale on the bot-
tom display (such as gallons). Both display lines use
14-segment, alphanumeric characters for clear indica-
tion of tags, units, or alarm messages.
Further enhancing the display on these instruments is
a 20-segment bargraph available on the PD6604 and
PD6608 that also includes a numeric value of the per-
centage the bargraph represents.
These loop-powered meters can be installed virtually
anywhere because they get their power from the
4-20 mA loop and therefore require no separate
power source. And they only drop 1.5 V (4.5 V with
backlight), so they add very little burden to the loop.
Additional features that allow these instruments to be
installed virtually anywhere include a NEMA 4X, IP65
front panel, an operating temperature range of
-40 to 167°F (-40 to 75°C) (for safe area products),
conformally coated PCBs, and a backlit LCD that can
be read in bright sunlight or dimly lit areas. Finally,
there are intrinsically safe and nonincendive versions
of these instruments that can be installed in hazard-
ous areas.
Free, PC-based, MeterView XL software that con-
nects to the meter via a micro USB cable is available
for programming and setup of the meters. For more
details, see the LIM6602MVXL manual.
All models come equipped with two open collector
outputs and a digital input. There are also models
available with two solid state relays and isolated
4-20 mA analog output options. The open collector
outputs are useful for alarm indication. The digital
input can be used to acknowledge the relays, to
start/stop a timer/stopwatch, and more. The relays
can be programmed for alarm indication, on/off
control, or pump alternation.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Key Features
Informative Display
The Loop Leader’s display provides multiple ways to
help users understand and keep track of their
processes. The most obvious is the dual line which
typically allows the user to display a numeric value of
the process variable on the top line and units and/or a
tag on the bottom line. An optional bargraph that
includes a numeric value of the percentage the
bargraph represents is also available.
Predefined display units give users even more display
flexibility. Plus, the high contrast backlit LCD display
is readable from far away and under various lighting
conditions.
Alarm Indication
When an alarm occurs, the Loop Leader's display
can be programmed to turn red. It may also be set
up to flash an alarm message along with the process
variable. The flashing red alarm message can be
activated even if no relay or open collector is
connected.
Dual-Scale Feature
Users can use the dual-scale feature to display
the input in two different scales. For instance, the
example above shows an application where the
display shows the input in feet and gallons while the
display toggles between process values and units.
14-Segment Characters
Notice how much better letters like “T”, “N” and “K”
appear as 14-segment characters on the Loop Leader
vs 7-segment characters found on many other meters.
Predefined and Custom Units
The meter has six available preprogrammed unit
classes: volume, height, temperature, pressure,
weight, and rate. When the desired unit class or unit
of measure within a class is not available, a custom
unit may be programmed.
Password Protection
A password can be set up for programming security to
prevent unauthorized changes to the programmed
parameter settings.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
6
Multiple Outputs
•Two open collector outputs (standard)
•Two solid state relays (optional)
•One 4-20 mA output (optional)
The open collector outputs and relays generally
operate in the same manner, with the major exception
being the open collectors are not available for pump
alternation and the relays are not available with pulse
features. The open collectors and relays can be
controlled either automatically or manually.
The isolated analog output signal can be configured
to represent the process variable (PV1, PV2, or
retransmit). It can also be reverse scaled such that
the meter’s high calibration value outputs 4 mA and
the meter’s low calibration outputs 20 mA.
Pump Alternation (ALTERN)
For pump control applications where two similar
pumps are used to control the level of a tank or a well,
it may be desirable to have the pumps operate alter-
nately. This prevents excessive wear and overheating
of one pump over the lack of use of the other pump.
Pump alternation uses both relays in tandem to alter-
nate between two similar pumps. The ALTERN menu
is only available under Output 1 and will automatically
set Output 2 to pump alternation as well.
Pump Alternation Example
The following is an example application where the re-
lays are programmed for pump alternation.
On & Off Point Programming
Relay
On Point
Off Point
Function
1
7000
1000
Controls backup pump
2
6000
1000
Controls main pump
The following graphics provide a visual representation
of a typical pump alternation application:
Note: Open Collectors can be used for high and low
alarm indication.
6245
GAL !
6245
GAL !
7153
GAL !
995
GAL
Relay #2 turns the main pump on at 6000 gallons and turns it off at
1000 gallons.
With the PumpAlternation feature activated, the next time the level
reaches 6000 gallons, relay #1 transfers and starts the backup
pump.
If the backup pump is not able to keep up, and the level reaches
7000 gallons, relay #2 transf ers and starts the main pump as well.
Once the level has dropped below the reset points, both relays will
turn off.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Input Signal Conditioning
Functions (FUNCTION)
The Function menu is used to select the input signal
conditioner applied to the input: linear, square root,
programmable exponent, or round horizontal tank vol-
ume calculation. Multi-point linearization is part of the
linear function selection.
Meters are set up at the factory for linear function with
2-point linearization. The linear function provides a
display that is linear with respect to the input signal.
Square Root Linearization (SQROOT)
The square root function can be used to linearize the
signal from a differential pressure transmitter and dis-
play flow rate in engineering units.
PD6602 Displaying Flow Rate by Applying the Square
Root Function to the Output of a DP Transmitter.
Programmable Exponent
Linearization (EXPONENT)
The programmable exponent can be used to linearize
the signal from level transmitters in open-channel flow
applications using weirs and flumes.
The PD6602, in combination with an ultrasonic level
transmitter, makes for an economical way to measure
and display open channel flow rate in most weirs and
flumes. A guide such as the ISCO Open Channel
Flow Measurement Handbook can provide the user
with all the information needed: the exponent used in
the flow equation for the desired flow units and the
flow rate for any given head height. For example, to
display the open channel flow rate from a 3" Parshall
flume, the ISCO handbook advises the exponent is
1.547 and at the maximum head height of 3.0 feet,
the flow rate is 3.508 MGD.
Round Horizontal Tank Linearization
(RH TANK)
This function automatically calculates the volume in a
round horizontal tank with flat ends. It is only available
for PV2 while the meter is in dual-scale mode.
Set the display for the desired decimal point and engi-
neering units before entering the round horizontal
tank function. Select units (inches or cm) for the tank
dimensions. Enter the diameter and the length in
inches or cm and the results will be calculated auto-
matically in US gallons or liters. The unit of measure
for the volume can be changed using the display
menu.
PD6604 Displaying Height in Feet and Volume in
Gallons in a Round Horizontal Tank Using
the RHT Linearization Feature.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Ordering Information
General Purpose Instruments
Loop Leader PD6602 • Standard Decimal Models – General Purpose
Model
Description
PD6602–LNN
Loop-Powered, General Purpose, No Options
PD6602–L2N
Loop-Powered, General Purpose, Two Solid State Relays
PD6602–L3N
Loop-Powered, General Purpose, 4-20 mA Analog Output
PD6602–L5N
Loop-Powered, General Purpose, Two Solid State Relays and 4-20 mA Analog Output
Loop Leader PD6604 • Decimal/Bargraph Models – General Purpose
Model
Description
PD6604–LNN
Loop-Powered, General Purpose, Bargraph, No Options
PD6604–L2N
Loop-Powered, General Purpose, Bargraph, Two Solid State Relays
PD6604–L3N
Loop-Powered, General Purpose, Bargraph, 4-20 mA Analog Output
PD6604–L5N
Loop-Powered, General Purpose, Bargraph, Two Solid State Relays and 4-20 mA Analog Output
Hazardous Area Instruments
Loop Leader PD6606 • Standard Decimal Models – Hazardous Area
Model
Description
PD6606–LNN
Loop-Powered, Hazardous Area, No Options
PD6606–L2N
Loop-Powered, Hazardous Area, Two Solid State Relays
PD6606–L3N
Loop-Powered, Hazardous Area, 4-20 mA Analog Output
PD6606–L5N
Loop-Powered, Hazardous Area, Two Solid State Relays and 4-20 mA Analog Output
Loop Leader PD6608 • Decimal/Bargraph Models –Hazardous Area
Model
Description
PD6608–LNN
Loop-Powered, Hazardous Area, Bargraph, No Options
PD6608–L2N
Loop-Powered, Hazardous Area, Bargraph, Two Solid State Relays
PD6608–L3N
Loop-Powered, Hazardous Area, Bargraph, 4-20 mA Analog Output
PD6608–L5N
Loop-Powered, Hazardous Area, Bargraph, Two Solid State Relays and 4-20 mA Analog Output
Note: All models come with two open collector outputs and one digital input standard.
Enclosures
Series
# of Meters
Description
PDA2300
1 –10
Plastic NEMA 4X: Hinged Cover, Clasp Closure, Meters Mount in Cover
PDA2600
1 –6
Stainless Steel NEMA 4X: Hinged Cover, Screw Closure, Meters Mount in Cover
PDA2700
1 –6
Painted Steel NEMA 4: Hinged Cover, Screw Closure, Meters Mount in Cover
PDA2800
1 –2
Plastic NEMA 4X: Screwed Down Cover, Meters Mount in Cover
PDA3400
1 –3
Plastic NEMA 4X: Screw Down Cover, Meters Mount Behind Cover
Need help selecting the right enclosure? Go to www.predig.com/esu
Accessories
Model
Description
PD9501
Multi-Function Calibrator
PD9502
Low-Cost Signal Generator
PDA1024-01
24 VDC Transmitter Power Supply for DIN Rail
PD659
Signal Isolators, Splitters, and Conditioners
PDA-LH
Light/Horn Accessory, See website for Available Colors
MOD-LH
Light/Horn/Enclosure Modification, See website for Available Colors
PDA2360
Plastic Control Stations

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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PDA2360 Plastic Control Stations
Model
Description
PDA2360-E
Emergency Button
PDA2361-A
Ack Button
PDA2361-B
Blank Button
PDA2361-R
Reset Button
PDA2361-T
Tare Button
PDA2361-S
Stop Button
PDA2361-Q
Silence Button
Notes:
1.These control stations do not carry hazardous area approvals
and are thus not suitable for location in hazardous areas. The
use of additional protective devices may allow them to be
installed in a safe area and connected to a device in a hazardous
area. User should consult a professional engineer to determine
suitability of these products for their specific application.
2.Control stations can be connected directly to the meter’s Digital
Input terminals labeled DI+ and DI-. See Remote Operation of
Meter on page 21 for details.
Light / Horn & Button Accessories
Model
Description
MOD-LHRB1
Red Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
MOD-LHGB1
Green Light / Horn and Reset
Button with Holes Drilled in
Enclosure(1)
MOD-LHYB1
Yellow Light / Horn and Reset
Button with Holes Drilled in
Enclosure(1)
MOD-LHBB1
Blue Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
MOD-LHWB1
White Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
Note:
1. This MOD supplies the Light / Horn and Reset Button. The
enclosure comes pre-drilled with holes for Light / Horn and Reset
Button and the user performs the installation and wiring. Meter and
enclosure are sold separately. The Light / Horn hole is in the back
left corner of the enclosure and the Reset Button is centered on the
cover of the enclosure below the meter about an inch off the
bottom of the cover except on the PDA3400 series where it is
mounted on the side of the enclosure.
Signal Splitter & Conditioner Accessories
Model
Description
PD659-1MA-1MA
Signal Isolator with One 4-20 mA
Input and One 4-20 mA Output
PD659-1MA-2MA
Signal Splitter with One 4-20 mA
Input and Two 4-20 mA Outputs
PD659-1V-1MA
Signal Conditioner with One 0-10
VDC Input and One 4-20 mA Output
PD659-1MA-1V
Signal Conditioner with One
4-20 mA Input and One 0-10 VDC
Output
Note:
These signal splitters and conditioners do not carry hazardous area
approvals and are thus not suitable for location in hazardous areas.
The use of additional protective devices may allow them to be in-
stalled in a safe area and connected to a device in a hazardous area.
User should consult a professional engineer to determine suitability of
these products for their specific application.
PDA6420 Split Core AC Current
Transducer
Model
Description
PDA6420
Input: 30/60/120 AAC;
Output: 4-20 mA
Note:
These split core transducers do not carry hazardous area approvals
and are thus not suitable for location in hazardous areas. The use of
additional protective devices may allow them to be installed in a safe
area and connected to a device in a hazardous area. User should
consult a professional engineer to determine suitability of these prod-
ucts for their specific application.
Each Light / Horn accessory comes with
9 labels for the button.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Useful Tools
PD9501 Multi-Function Calibrator
This PD9501 Multi-Function Calibrator has a variety
of signal measurement and output functions, including
voltage, current, thermocouple, and RTD.
PD9502 Low-Cost Signal Generator
The PD9502 is a low-cost, compact, simple to use
4-20 mA or 0-10 VDC signal generator. It can easily
be set for 0-20 mA, 4-20 mA, 0-10 V or 2-10 V
ranges. Signal adjustment is made with a one-turn
knob. A 15-27 VDC wall plug is provided with the
instrument. Optional USB power bank is available.