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PRECISION DIGITAL CORPORATION
89 October Hill Road • Holliston MA 01746 USA
Tel (800) 343-1001 • Fax (508) 655-8990
www.predig.com
PD6830 EXPLOSION-PROOF
PULSE INPUT RATE/TOTALIZER
Pulse, Open Collector, NPN, PNP, TTL, Switch Contact, Sine Wave
(Coil), Square Wave, Opto-Isolated Inputs
Modern, Sleek and Practical Enclosure
Isolated 4-20 mA Output for Either Rate or Total
5-Digit Rate, 0.7" (17.8 mm)
7 Alphanumeric Character Total/Tag, 0.4" (10.2 mm)
7-Digit Totalizer
SafeTouch
®
Through-Glass Button Programming
Battery, DC, or Output Loop-Powered Models
Gate Function for Rate Display of Slow Pulse Rates
K-Factor, Scaling, or Live Input Calibration
32-Point Linearization
Password Protection
Backlight Standard on All Models
Explosion-Proof, IP68, NEMA 4X Enclosure
Operates from -40 to 75°C (-20 to 75°C on Battery Models)
®
PD6830 Pulse Input Rate/Totalizer Instruction Manual
2
Disclaimer
The information contained in this document is subject to change without notice.
Precision Digital 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.
!
CAUTION: Read complete
instructions prior to installation
and operation of the meter.
WARNING: Risk of
electric shock or
personal injury.
WARNINGS
• 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.
• Failure to follow installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
• Never remove the meter cover in explosive environments when the circuit is
live.
• Cover must be fully engaged to meet flameproof/explsion-proof requirements.
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.
Registered Trademarks
SafeTouch
®
is a registered trademark of Precision Digital Corporation. All other
trademarks mentioned in this document are the property of their respective owners.
© 2011 Precision Digital Corporation. All rights reserved.
www.predig.com
PD6830 Pulse Input Rate/Totalizer Instruction Manual
3
INTRODUCTION
The ProtEX-RTP PD6830 is a rugged, explosion-proof pulse input rate/totalizer fully
featured for demanding applications in hazardous areas or in the harshest
environmental conditions. It is programmed using the four SafeTouch
®
through-glass
buttons, without removing the cover. The numeric rate display will read up to 99999
and the alphanumeric total/tag display will read up to 9999999. The alphanumeric
display can also be programmed to show any combination of numbers and letters up
to seven characters long for use as engineering units and/or the process
identification tag. The backlight makes the display more visible under any lighting
condition. The enclosure is provided with threaded conduit holes and integrated pipe
or wall mounting slotted flanges.
ORDERING INFORMATION
Model Description
PD6830-AP0 9-30 VDC Powered, Backlight
PD6830-APA 9-30 VDC Powered, Backlight, Isolated 4-20 Output
PD6830-BM0 Battery (or DC)-Powered*, Momentary Backlight**
PD6830-BTA
Battery (or DC)-Powered*, Loop-Powered Backlight, Isolated
4-20 Output
PD6830-CTB
4-20 mA Output-Powered, Loop-Powered Backlight,
Non-Isolated 4-20 mA Output
* When DC-powered, battery will provide backup power when DC power is lost.
** Backlight is constant while supplied with DC power and momentary when operating
from battery backup.
Accessories
Model Description
PDAPLUG75 ¾" Metal Conduit/Stopping Plug
PDABAT36D 3.6 V D Cell Lithium Battery
PDA0001 3/4" M-NPT to F-M20 Reducer
PDA0002 3/4" M-NPT to 1/2" F-NPT Reducer
PD6830 Pulse Input Rate/Totalizer Instruction Manual
4
Table of Contents
INTRODUCTION ---------------------------------------------------------------------- 3
ORDERING INFORMATION ------------------------------------------------------- 3
SPECIFICATIONS -------------------------------------------------------------------- 6
General ------------------------------------------------------------------------------------------- 6
Rate Input ---------------------------------------------------------------------------------------- 7
Rate/Totalizer ----------------------------------------------------------------------------------- 8
4-20 mA Transmitter Output -------------------------------------------------------------- 9
Product Ratings and Approvals ------------------------------------------------------- 10
Electromagnetic Compatibility --------------------------------------------------------- 11
SAFETY INFORMATION ------------------------------------------------------------------ 11
INSTALLATION ---------------------------------------------------------------------- 12
Unpacking ------------------------------------------------------------------------------------- 12
Pre-Installed Conduit/Stopping Plug -------------- Error! Bookmark not defined.
Mounting --------------------------------------------------------------------------------------- 13
Cover Jam Screw --------------------------------------------------------------------------- 13
Connections ---------------------------------------------------------------------------------- 13
Input Signal Connections ........................................................................... 15
DC Power Connection ............................................................................... 17
External Reset Connection ........................................................................ 17
4-20 mA Transmitter Output Connections ................................................. 18
Battery Replacement ................................................................................. 19
SETUP AND PROGRAMMING -------------------------------------------------- 20
SafeTouch
®
Buttons ----------------------------------------------------------------------- 21
Buttons and Display ----------------------------------------------------------------------- 22
Main Menu Display Functions & Messages ---------------------------------------- 23
Main Menu ------------------------------------------------------------------------------------- 25
Setting Numeric Values ------------------------------------------------------------------- 26
Setting Up the Meter (SETUP) ------------------------------------------------------------ 27
Setting the Decimal Point (dec.PT) ............................................................. 28
Programming the Meter (PRoG) .................................................................. 29
K-Factor (Factr)---------------------------------------------------------------------- 30
Scaling the Meter (SCale) ---------------------------------------------------------- 31
Calibrating the Meter (Cal) -------------------------------------------------------- 32
Setting the Time Base (tbase) --------------------------------------------------- 34
Setting the Total Conversion Factor (totCF) --------------------------------- 34
Manual or Automatic Total Reset Function (t rST) ------------------------- 35
Setting the Tag Display (tag) .................................................................... 36
Scaling the 4-20 mA Analog Output (Aout) ............................................... 37
Setting Up the Password (PASSWRD) .......................................................... 38
Locking the Meter ...................................................................................... 38
PD6830 Pulse Input Rate/Totalizer Instruction Manual
5
Making Changes to a Password Protected Meter ..................................... 38
Disabling Password Protection .................................................................. 39
Advanced Features Menu ---------------------------------------------------------------- 40
Advanced Features Menu & Display Messages ........................................ 41
Indication (INDICAT) .................................................................................. 42
Gate Function (Gate) ................................................................................. 43
Multi-Point Linearization (LINEAR) ............................................................. 44
Contact Debounce Filter (FiLter) ............................................................. 46
Low-Flow Cutoff (CUTOFF) ......................................................................... 46
Output Internal Calibration (OCAL) ............................................................. 46
Backlight (BAKLITE) ................................................................................... 46
Information (INFO) ..................................................................................... 46
Servicing the Meter (SERVICE) ---------------------------------------------------------- 47
OPERATION -------------------------------------------------------------------------- 48
Front Panel Buttons Operation -------------------------------------------------------- 48
Resetting the Total ------------------------------------------------------------------------- 48
Maximum & Minimum Readings (MAXIMUM & MINIMUM) ------------------------ 49
Reset Meter to Factory Defaults ------------------------------------------------------- 49
Factory Defaults & User Settings ----------------------------------------------------- 50
TROUBLESHOOTING ------------------------------------------------------------- 51
Troubleshooting Tips ---------------------------------------------------------------------- 51
MOUNTING DIMENSIONS -------------------------------------------------------- 52
QUICK USER INTERFACE REFERENCE ------------------------------------ 54
EC DECLARATION OF CONFORMITY --------------------------------------- 56
Table of Figures
Figure 1. PD6830 Connector Board ........................................................ 14
Figure 2. Flowmeter Powered by External Supply ................................ 15
Figure 3. Opto-Isolated Flowmeter Powered by External Supply ........ 15
Figure 4. Self-Powered Magnetic Pickup Coil Flowmeter ..................... 15
Figure 5. NPN Open Collector Input ....................................................... 16
Figure 6. PNP Sensor with External Power ............................................ 16
Figure 7. Switch Contact Input ................................................................ 16
Figure 8. DC Power Connections ............................................................ 17
Figure 9. PD6830 Reset Connections ..................................................... 17
Figure 10. 4-20 mA Output Connections ................................................ 18
Figure 11. Battery Orientation ................................................................. 19
Figure 12. Scale Menu .............................................................................. 31
Figure 13. Multi-Point Linearization Menu ............................................. 45
Figure 13. Enclosure Dimensions – Front View..................................... 52
Figure 14. Enclosure Dimensions – Side Cross Section View ............. 53
PD6830 Pulse Input Rate/Totalizer Instruction Manual
6
SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
DISPLAY Five digits rate
(-9999 to 99999)
0.7" (17.8 mm) high, 7-segment,
automatic lead zero blanking.
Seven characters
Total and/or Tag
0.4" (10.2 mm) high, 14 segment,
automatic lead zero blanking.
Symbols High, Low, & Set Alarm, Password Lock
DISPLAY
UPDATE RATE
Ambient > -25°C: 1 Updates/Second
Ambient < -25°C: 1 Update/5 Seconds
Note: Update is dependent on gate settings.
OVERRANGE
Display flashes
99999
BACKLIGHT White LED, 10 sec auto-off for battery powered models.
PROGRAMMING
METHODS
Four SafeTouch
®
through-glass buttons when cover is
installed. Four internal pushbuttons when cover is removed.
RECALIBRATION All ranges are calibrated at the factory to read frequency in
Hz. No recalibration required.
MAX/MIN
DISPLAY
Max/Min readings reached by the process are stored until
reset by the user or until power to the meter is cycled.
PASSWORD Programmable password restricts modification of programmed
settings and manual total reset via button interface.
NON-VOLATILE
MEMORY
All programmed settings and total reading are stored in non-
volatile memory for a minimum of ten years if power is lost.
POWER OPTIONS 9-30 VDC, 2.2 W max
4-20 mA Transmitter Output Power, 30 VDC max
Battery Power
DC Power with battery backup
BATTERY 3.6 V Primary Lithium (Li-SOCl
2
), non-rechargeable
Expected Service Life: 5 Years
Recommended
Replacement Interval:
3 Years when exclusive source
10 Years in backup configuration
Model PDABAT36D
ISOLATION All Models: 500 V opto-isolated input-to-power/output
PD6830-BTA: 500 V input-to-output
PD6830-APA: 500 V input/power-to-output
Note: Requires separate output supply
PD6830 Pulse Input Rate/Totalizer Instruction Manual
7
ENVIRONMENTAL Operating temperature range: -40 to 75°C (-20° to 75°C on
battery powered models)
Storage temperature range: -40 to 75°C
Relative humidity: 0 to 90% non-condensing
CONNECTIONS Screw terminals accept 12 to 22 AWG wire
ENCLOSURE
Explosion-proof die cast aluminum with glass window,
corrosion resistant epoxy coating, color: blue. NEMA 4X, 7, &
9, IP68.
Three ¾" NPT threaded conduit openings. One ¾" NPT metal
conduit/stopping plug with 12 mm hex key fitting installed.
MOUNTING May be mounted directly to conduit. Two slotted flanges for
wall mounting or NPS 1½" to 2½" or DN 40 to 65 mm pipe
mounting. See Mounting Dimensions on page 52.
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
Rate Input
PULSE/
TRANSISTOR/
CONTACT CLOSURE
INPUT
Field selectable; Sourcing or sinking pulse or square wave
0-5 V, 0-12 V, or 0-24 V; TTL; NPN or PNP transistor;
Open collector 100 kΩ pull-up to 3 V;
Switch contact 100 kΩ pull-up to 3 V;
PNP transistor 100 kΩ pull-down to ground (COM)
Maximum Frequency: 30 kHz
Minimum Pulse Width: 16 µs
OPTO-ISOLATED
INPUT
Sourcing pulse or square wave 0-5 V, 0-12 V, or 0-24 V;
Logic High: 4-30 V, Logic Low: < 1 V
Maximum Frequency: 10 kHz
Minimum Pulse Width: 50 µs
Input Current: 1 mA @ 5 V, 2.5 mA @ 12 V, 5 mA @ 24 V
LOW VOLTAGE MAG
PICKUP INPUT
Sensitivity: 40 mVp-p to 24 Vp-p
Maximum Frequency: 30 kHz
MINIMUM INPUT
FREQUENCY
0.001 Hz
Minimum frequency is dependent on high gate setting.
INPUT
IMPEDANCE
Pulse input: Greater than 300 k @ 1 kHz.
Open collector/switch input: 100 k pull-up to 3 V.
ACCURACY ±0.03% of calibrated span ±1 count
TEMPERATURE
DRIFT
Rate display is not affected by changes in temperature.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
8
LOW-FLOW CUTOFF 0-99999 (0 disables cutoff function)
DECIMAL POINT Up to five decimal places or none:
d.dddd, d.ddd, d.dd, d.d, or dddddd
CALIBRATION May be calibrated using K-Factor, scale without signal
source, internal calibration, or by applying an external
calibration signal.
K-FACTOR Field programmable K-Factor converts input pulses to rate in
engineering units. May be programmed from 0.000001 to
9999999 pulses/unit.
CALIBRATION
RANGE
Input 1 signal may be set anywhere in the range of the me-
ter; input 2 signal may be set anywhere above input 1 set-
ting. Minimum input span is 1 Hz.
An Error message will appear if the input 1 and input 2
signals are too close together.
CONTACT
DEBOUNCE FILTER
Programmable contact debounce filter: 40 to 999 Hz maxi-
mum input frequency allowed with low speed filter.
TIME BASE Second, minute, hour, or day
GATE Low gate: 1-99 seconds; High gate: 2-999 seconds
Rate/Totalizer
DISPLAY
ASSIGNMENT
The top display is assigned to rate. The bottom display is
programmable to alternate between total for 10 seconds,
then the tag for 2 seconds or to show only the total or to
show only the tag.
TOTAL
DECIMAL POINT
Up to six decimal places or none:
d.dddddd, d.ddddd, d.dddd, d.ddd, d.dd, d.d or
ddddddd
Total decimal point is independent of rate decimal point.
TOTALIZER Calculates total based on rate and field programmable mul-
tiplier to display total in engineering units. Time base must
be selected according to the time units in which the rate is
displayed.
TOTAL RESET Via SafeTouch
®
RESET button, mechanical button (cover
off), external contact closure, automatically via user select-
able preset value and time delay. Manual reset may be
disabled or protected by password.
TOTALIZER
ROLLOVER
Totalizer rolls over when display exceeds 9,999,999.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
9
4-20 mA Transmitter Output
OUTPUT
SOURCE
Rate or total
SCALING RANGE 4.000 to 20.000 mA for any display range.
CALIBRATION Factory Calibrated: 0.0 to 1000.0 = 4-20 mA output
UNDERRANGE Output Underrange: 3.8 mA
OVERRANGE Display Overrange: 22.0 mA
Output Overrange: 20.5 mA
ACCURACY ± 0.1% span ± 0.004 mA
TEMPERATURE
DRIFT
0.4 µA/C max from 0 to 65C ambient,
0.8 µA/C max from -40 to 0C ambient
Note: Analog output drift is separate from input drift.
EXTERNAL LOOP
POWER SUPPLY
30 VDC maximum
OUTPUT LOOP
RESISTANCE
Power supply Minimum Maximum
24 VDC
10 700
30 VDC
100 1200
Note: loop-powered backlight subtracts 150
from
maximum resistance figures above.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
10
Product Ratings and Approvals
FM Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1; T6
Class I, Zone 1, AEx d IIC T6 Gb
Zone 21, AEx tb IIIC T85°C
Ta = -40°C to +75°C
Enclosure: Type 4X & IP66
Certificate number: 3040391
ATEX
II 2 G D
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP68
Ta = -40°C to +75°C
ATEX Certificate: Sira 10ATEX1116X
CSA
Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1; T6
Class I, Zone 1, Ex d IIC T6
Ta = -40°C to +75°C
Enclosure: Type 4X & IP66
Certificate number: 11 2325749
IECEx
IECEx SIR 10.0056X
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP68
Ta = -40°C to +75°C
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 mechanical
damage. The cable shall not be subjected to tension or torque. If the cable is to be
terminated within an explosive atmosphere, then appropriate protection of the free
end of the cable shall be provided.
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 European Community: The PD6830 must be installed in accordance with the
ATEX directive 94/9/EC, and the product certificate Sira 10ATEX1116X.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
11
Electromagnetic Compatibility
EMISSIONS
EN 61326:2006
Safety requirements for measurement, control, and
laboratory use – Industrial
Group 1 Class A ISM emissions requirements
Radiated
Emissions
Class A
IMMUNITY
EN 61326:2006
Safety requirements for measurement, control, and
laboratory use
ESD
±4 kV contact,
±8 kV air
RFI – Amplitude
Modulated
80-1000 MHz @ 10 V/m,
1.4-2.0 GHz @ 3 V/m,
2.0-2.7 GHz @ 1 V/m,
80% AM (1 kHz)
EFT
±2 kV DC mains, ±1 kV other
Telco Surge
±1 kV
CRFI
3 V, 0.15-80 MHz, 1 kHz 80% AM
SAFETY INFORMATION
WARNINGS
Read complete instructions prior to installation and operation of the meter.
Installation and service should be performed only by trained service
personnel. Service requiring replacement of internal components must be
performed at the factory.
Disconnect from supply before opening enclosure. Keep cover tight while
circuits are alive. Conduit seals must be installed within 18" (450mm) of
the enclosure.
Verify that the operating atmosphere of the meter is consistent with the
appropriate hazardous locations certifications.
If the meter is installed in a high voltage environment and a fault or
installation error occurs, high voltage may be present on any lead
PD6830 Pulse Input Rate/Totalizer Instruction Manual
12
INSTALLATION
For Installation in USA: The PD6830 must be installed in accordance with the
National Electrical Code (NEC) NFPA 70.
For Installation in Canada: The PD6830 must be installed in accordance with the
Canadian Electrical Code CSA 22.1.
For European Community: The PD6830 must be installed in accordance with the
ATEX directive 94/9/EC and the product certificate Sira 10ATEX116X.
WARNING
Disconnect from supply before opening enclosure. Keep cover
tight while circuits are alive. Conduit seals must be installed within
18" (450mm) of the enclosure.
Wiring connectors are accessed by opening the enclosure. Cover jam screw may
need to be loosened on the cover. To access electrical connectors, remove the 2
captive screws, then disconnect the ribbon cable from the display module 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 malfunctions,
please contact your supplier or the factory for assistance.
Pre-Installed Conduit/Stopping Plug
The PD6830 is supplied with one pre-installed conduit/stopping plug for installations
that do not require the use of all three conduit entries. The conduit/stopping plug
includes an internal hexagonal socket recess for removal. The pre-installed plug and
its installation are included in the hazardous area approvals for the PD6830. The
conduit/stopping plug has an internal 12 mm hexagonal socket recess for removal.
For additional conduit/stopping plugs, see ORDERING INFORMATION on page 3.
WARNING
In hazardous areas, conduit and conduit/stopping plugs require the
application of non-setting (solvent free) thread sealant. It is critical
that all relevant hazardous area guidelines be followed for the
installation or replacement of conduit or plugs.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
13
Mounting
The PD6830 has two slotted mounting flanges that may be used for pipe mounting or
wall mounting. Alternatively, the unit may be supported by the conduit using the
conduit holes provided.
Refer to Mounting Dimensions, page 52 for details.
WARNING
Do not attempt to loosen or remove flange bolts while the meter is
in service.
Cover Jam Screw
The cover jam screw should be properly installed once the meter has been wired and
tested in a safe environment. The cover jam screw is intended to prevent the removal
of the meter cover in a flameproof environment without the use of tools. Using a M2
hex wrench, turn the screw clockwise until the screw contacts the meter. Turn the
screw an additional 1/4 to 1/2 turn to secure the cover. Caution: Excess torque may
damage the threads and/or wrench.
Connections
WARNINGS
Static electricity can damage sensitive components.
Observe safe handling precautions for static-sensitive components.
Use proper grounding procedures/codes.
If the meter is installed in a high voltage environment and a fault or
installation error occurs, high voltage may be present on any lead or
terminal.
To access the connectors, loosen the cover jam screw (if tightened) with an M2 hex
wrench, remove the enclosure cover and unscrew the two captive screws that fasten
the display module into the enclosure. Disconnect the ribbon cable and remove the
display module. Power and signal connections are made to a barrier terminal
connector in the base of the enclosure. Grounding connections are made to the two
ground screws provided on the base – one internal and one external. Use proper
grounding techniques for explosion-proof areas and observe all local and national
electric codes.
PD6830 Pulse Input Rate/Totalizer Instruction Manual
14
Connections (continued)
ISO+ Isolated signal input positive terminal connection.
ISO- Isolated signal return/negative terminal connection.
S+ Signal input positive terminal connection.
S- Magnetic pickup (coil) signal return/negative terminal connection.
COM Signal return/negative, DC power return/negative, Contact closure reset
return/negative terminal connection.
RST+ Contact closure reset pull-up to 3 VDC.
P+ DC Power positive terminal connection.
LP+ 4-20 mA transmitter DC power positive terminal connection.
LP- 4-20 mA transmitter regulated current output terminal connection.
Refer to Figure 1 for terminal positions.
WARNING
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.
ISO+ ISO- S+ S- COM RST+ P+ LP+ LP-
Figure 1. PD6830 Connector Board
PD6830 Pulse Input Rate/Totalizer Instruction Manual
15
Input Signal Connections
Signal connections are made to a barrier terminal mounted in the base of the
enclosure. Input level and type are configured using two slide switches on the bottom
of the display module as shown in the lower right of the following figures.
ISO+ ISO- S+ S- COM
Flowmeter
(Pulse Output)
Power
Supply
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 2. Flowmeter Powered by External Supply
ISO+ ISO- S+ S- COM
Flowmeter
(Pulse Output)
Power
Supply
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 3. Opto-Isolated Flowmeter Powered by External Supply
V mV
INPUT LEVEL
ISO+
ISO- S+ S- COM
Flowmeter
(Magnetic Pickup Coil)
PNP NPN
INPUT TYPE
Figure 4. Self-Powered Magnetic Pickup Coil Flowmeter
PD6830 Pulse Input Rate/Totalizer Instruction Manual
16
ISO+ ISO- S+ S- COM
+3.0 V
100 kOhm
Internal Pullup
NPN
SENSOR
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 5. NPN Open Collector Input
ISO+ ISO- S+ S- COM
100 kOhm
Internal Pull-Down
PNP
SENSOR
Power
Supply
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 6. PNP Sensor with External Power
ISO+ ISO- S+ S- COM
+3.0 V
100 kOhm
Internal Pullup
SWITCH
CONTACT
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 7. Switch Contact Input
PD6830 Pulse Input Rate/Totalizer Instruction Manual
17
DC Power Connection
Models configured for DC power (PD6830-A) are provided with a terminal labeled P+
and are wired as shown in Figure 9. Models configured for battery power (PD6830-B)
may optionally be connected to DC power and the battery will function as backup power
when DC is lost. The same power supply may be used to power other circuits including
a PNP-type sensor, however to maintain input isolation, a separate power supply must
be used to power the isolated 4-20 mA transmitter as shown in Figure 10 and/or to
power the Opto-Isolated Flowmeter as shown in Figure 3.
COM RST+ P+ LP+ LP-
Power
Supply
Figure 8. DC Power Connections
External Reset Connection
External reset connections are made between RST+ and COM. Connect to a contact
closure source such as a relay or a pushbutton as shown in Figure 9. Avoid extended
contact closure to preserve battery life. The total is reset when he button is pressed.
The meter will start to totalize immediately. Holding down the button has no effect on
the total.
COM RST+ P+ LP+ LP-
+
3
.
0
V
100 kOhm
Internal Pullup
Figure 9. PD6830 Reset Connections
PD6830 Pulse Input Rate/Totalizer Instruction Manual
18
4-20 mA Transmitter Output Connections
Output connections are made to two terminals labeled LP+ and LP-. Connect to an
input device such as a remote display or chart recorder as shown in Figure 10.
COM RST+ P+ LP+ LP-
Power
Supply
4-20 mA Input
Device
Figure 10. 4-20 mA Output Connections
PD6830 Pulse Input Rate/Totalizer Instruction Manual
19
Battery Replacement
Battery-equipped models have a battery charge monitor. When the battery is nearing
the end of its capacity the screen will periodically flash the message LO BATTERY. The
recommended replacement interval for models using the battery as a primary power
source (without DC power at P+ terminal) is three years or within 30 days of the first low
battery indication on the screen. Replacement interval on models that use battery as
backup during short and infrequent DC power loss is ten years. The total is backed up
in non-volatile memory when the low battery monitor trips. It is recommended that an
updated reading be manually backed up prior to changing out the battery. Refer to
information on preparing the meter for battery change in Servicing the Meter (SERVICE)
on page 47 before changing battery.
WARNING
Fire, explosion and burns may result if not handled properly. Do
not recharge, short circuit, crush, disassemble, heat above 100°C
(212°F), incinerate, or expose contents to water.
Battery disposal should be in accordance with applicable
regulations, which vary by location. In many locations trashing of
used batteries is forbidden and disposal is done through local
battery disposal facilities. Spent batteries should be packaged in
such a way as to prevent short circuits during handling and
transport.
NOTICE: Battery may only be replaced with an original Model PDABAT36D supplied
by Precision Digital. Do not recharge battery. Do not replace with used battery.
Remove cover and display module and disconnect display module ribbon cable.
Carefully clip and remove the cable ties that were supplied for shipping (if present).
Remove the spent battery and prepare it for disposal.
Install new PDABAT36D into battery clip with polarity as shown in Figure 11.
Reconnect and fasten display module. Install enclosure cover.
Resume operation.
P
D
A
B
A
T
3
6
D
+
-
+
+
+
+
+
+
+
+
+
+
Figure 11. Battery Orientation
PD6830 Pulse Input Rate/Totalizer Instruction Manual
20
SETUP AND PROGRAMMING
There is no need to recalibrate the meter for frequency in
Hz when first received from the factory.
The meter is factory calibrated for Hz prior to shipment.
The calibration equipment is certified to NIST standards.
Overview
Setup and programming is done through the infrared through-glass SafeTouch
®
buttons, or using the mechanical buttons when uncovered. There are three slide
switches located on the display module. Two are used to configure the input and the
other is to lock or unlock the SafeTouch
®
Buttons.
/
