Strain Gauge, Load Cell & mV Meter
PD6100 Instruction Manual
15, 30, 150, 300 mV Unipolar Input Ranges
±15, ±25, ±150, ±250 mV Bipolar Input Ranges
Selectable 5 or 10 VDC Sensor Excitation
Supports up to Twelve (12) 350 Load Cells
(Minimum Load Resistance of 28 )
Capture or Programmable Tare Feature
Max/Min or Peak/Valley Hold Feature
Ratiometric Operation
Large Dual-Line 6-Digit Display, 0.60" & 0.46"
Dual-Scale Feature – Single Input
Rounding Function 1, 2, 5, 10, 20, 50, or 100
Auto-Zero Feature Eliminates Zero Drift
Programmable Display & Function Keys
32-Point Linearization
NEMA 4X, IP65 Front
Universal 85-265 VAC, or 12/24 VDC Input Power Models
2 or 4 Relays + Isolated 4-20 mA Output Options
External 4-Relay & Digital I/O Expansion Modules
USB, RS-232, & RS-422/485 Serial Communication Options
Modbus
Configure, Monitor, and Datalog from a PC with
Free MeterView
®
RTU Communication Protocol Standard
®
Pro Software
PRECISION DIGITAL CORPORATION
89 October Hill Road • Holliston MA 01746 USA
Tel (800) 343-1001 • Fax (508) 655-8990
www.predig.com
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
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.
Warning!
!
CAUTION: Read complete
instructions prior to
installation and operation
of the meter.
This product 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: Risk of
electric shock or
personal injury.
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
PROVU® and MeterView® Pro are registered trademarks of Precision
Digital Corporation. All other trademarks mentioned in this document
are the property of their respective owners.
© 2012-2015 Precision Digital Corporation. All rights reserved.
www.predig.com
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Table of Contents
INTRODUCTION ------------------------------------------------------------ 6
ORDERING INFORMATION --------------------------------------------- 7
SPECIFICATIONS ---------------------------------------------------------- 8
General ------------------------------------------------------------------------------- 8
Strain Gauge Input ------------------------------------------------------------- 10
Relays ------------------------------------------------------------------------------ 10
Isolated 4-20 mA Transmitter Output ------------------------------------ 11
Modbus® RTU Serial Communications ---------------------------------- 12
COMPLIANCE INFORMATION ---------------------------------------- 12
Safety ------------------------------------------------------------------------------- 12
Electromagnetic Compatibility --------------------------------------------- 13
SAFETY INFORMATION ------------------------------------------------ 14
INSTALLATION ------------------------------------------------------------ 14
Unpacking ------------------------------------------------------------------------- 14
Panel Mounting Instructions ------------------------------------------------ 14
Mounting Dimensions ------------------------------------------------------- 16
Configuration for 12 or 24 VDC Input Power Option ---------------- 17
Sensor Excitation Voltage Selection (EX+, EX-) --------------------- 18
Connections ---------------------------------------------------------------------- 18
Connectors Labeling --------------------------------------------------------- 19
Power Connections ---------------------------------------------------------- 19
Signal Connections ---------------------------------------------------------- 20
Switch Configuration ---------------------------------------------------------- 20
Shunt Calibration ------------------------------------------------------------- 23
Modbus RTU Serial Communications ----------------------------------- 24
Relay Connections ----------------------------------------------------------- 24
Switching Inductive Loads -------------------------------------------------- 25
4-20 mA Output Connections ---------------------------------------------- 26
Analog Output Power Supply ---------------------------------------------- 26
F4 Digital Input Connections ----------------------------------------------- 26
External Relays & Digital I/O Connections ----------------------------- 27
Interlock Relay Feature ----------------------------------------------------- 28
SETUP AND PROGRAMMING ---------------------------------------- 29
Front Panel Buttons and Status LED Indicators --------------------- 30
Display Functions & Messages -------------------------------------------- 31
Setting Numeric Values ------------------------------------------------------ 34
Main Menu ------------------------------------------------------------------------ 35
3
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Setting Up the Meter (setup) ------------------------------------------------ 36
Setting the Input Signal (Input) ------------------------------------------ 37
Setting the Input Units (units) -------------------------------------------- 39
Setting the Input Units or Custom Tags (units) ---------------------- 40
Programming the Meter (prog) ------------------------------------------- 42
Program Menu for Single Scale Process --------------------------- 42
Program Menu for Dual-Scale Applications ------------------------ 42
Calibrating the Meter with Strain Gauge/Load Cell (Cal) ---------- 43
Multi-Point Calibration & Scaling -------------------------------------- 43
MeterView® Pro Software ----------------------------------------------- 44
Scaling the Meter (SCALE) ---------------------------------------------- 44
Dual-Scale Application --------------------------------------------------- 45
Setting the Display Parameter & Intensity (dsplay) ----------------- 47
Display Setup Menu --------------------------------------------------------- 48
Setting the Relay Operation (relay) ------------------------------------- 49
Setting the Relay Action ---------------------------------------------------- 50
Programming Set and Reset Points ------------------------------------- 51
Setting Fail-Safe Operation ------------------------------------------------ 51
Programming Time Delay -------------------------------------------------- 51
Relay and Alarm Operation Diagrams ----------------------------------- 52
High Alarm Operation (Set > Reset) ------------------------------------- 52
Low Alarm Operation (Set < Reset) -------------------------------------- 53
High Alarm with Fail-Safe Operation (Set > Reset) ------------------ 54
Low Alarm with Fail-Safe Operation (Set < Reset) ------------------- 55
Pump Alternation Control Operation ------------------------------------- 56
Relay Sampling Operation ------------------------------------------------- 57
Time Delay Operation ------------------------------------------------------- 58
Relay Operation Details ------------------------------------------------------ 59
Overview ------------------------------------------------------------------------ 59
Relays Auto Initialization ---------------------------------------------------- 59
Fail-Safe Operation ---------------------------------------------------------- 59
Front Panel LEDs ------------------------------------------------------------- 60
Latching and Non-Latching Relay Operation -------------------------- 60
Non-Latching Relay (Auto) ------------------------------------------------- 61
Non-Latching Relay (A-man) -------------------------------------------- 61
Latching Relay (LatcH) ----------------------------------------------------- 61
Latching Relay (Lt-Clr) ---------------------------------------------------- 62
Acknowledging Relays ------------------------------------------------------ 62
Pump Alternation Control Applications (Altern) --------------------- 63
Setting Up the Interlock Relay (Force On) Feature ------------------ 66
Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 67
Setting Up the Password (pass) ------------------------------------------- 68
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Protecting or Locking the Meter ------------------------------------------- 68
Making Changes to a Password Protected Meter -------------------- 69
Disabling Password Protection -------------------------------------------- 69
Reset Menu (reset) ------------------------------------------------------------ 70
Tare Menu (Tare) --------------------------------------------------------------- 70
Tare Functionality (tare) --------------------------------------------------- 70
Control Menu (Contrl) -------------------------------------------------------- 71
Advanced Features Menu ---------------------------------------------------- 71
Advanced Features Menu & Display Messages ---------------------- 72
Noise Filter (filter) -------------------------------------------------------- 75
Noise Filter Bypass (bypass) ---------------------------------------------- 75
Rounding Feature (round) ------------------------------------------------- 75
Modbus RTU Serial Communications (serial) ---------------------- 76
Select Menu (SElect) ------------------------------------------------------- 77
Signal Input Conditioning (Functn) -------------------------------------- 77
Auto-Zero (Auto 0) ---------------------------------------------------------- 78
Low-Flow Cutoff (CutofF) -------------------------------------------------- 79
Analog Output Programming (AoutPr) ---------------------------------- 79
Programmable Function Keys User Menu (user) -------------------- 80
Internal Source Calibration (ICAL) --------------------------------------- 81
Error Message (error) ------------------------------------------------------ 83
Meter Copy Function (Copy) ----------------------------------------------- 84
Copy Function Requirements ------------------------------------------ 84
METER OPERATION ----------------------------------------------------- 85
Front Panel Buttons Operation -------------------------------------------- 85
Function Keys Operation ---------------------------------------------------- 85
Maximum/Minimum Readings ---------------------------------------------- 86
TROUBLESHOOTING ---------------------------------------------------- 87
Diagnostics Menu (diag) ----------------------------------------------------- 87
Determining Software Version -------------------------------------------- 87
Reset Meter to Factory Defaults ------------------------------------------- 88
Factory Defaults & User Settings ----------------------------------------- 89
Troubleshooting Tips (Including FAULT & ERROR Messages) -------- 92
Alphabetical List of Display Functions & Messages --------------- 93
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Table of Figures
Figure 1. 1/8 DIN Panel Cutout Dimensions ..................................... 15
Figure 2. Panel Mounting Details ...................................................... 15
Figure 3. Meter Dimensions - Side View ........................................... 16
Figure 4. Meter Dimensions - Top View ............................................ 16
Figure 5. Jumper Configuration for 12/24 VDC Input Power .......... 17
Figure 6. Sensor Excitation Voltage Selection ................................ 18
Figure 7. Connector Labeling for Fully Loaded PD6100 ................. 19
Figure 8. Power Connections ............................................................ 19
Figure 9. Strain Gauge Configuration Switch .................................. 20
Figure 10. Strain Gauge Powered by Internal Supply ..................... 22
Figure 11. Strain Gauge Powered by External Supply .................... 23
Figure 12. mV Transducer Input Connections ................................. 23
Figure 13. Shunt Resistor .................................................................. 24
Figure 14. Relay Connections ........................................................... 24
Figure 15. AC and DC Loads Protection ........................................... 25
Figure 16. Low Voltage DC Loads Protection .................................. 25
Figure 17. 4-20 mA Output Connections .......................................... 26
Figure 18. F4 Digital Input Connections ........................................... 26
Figure 19. Expansion Modules & DIN Rail Mounting Kit ................. 27
Figure 20. External Relays Module Connections ............................. 27
Figure 21. Digital I/O Module Connections ....................................... 28
Figure 22. Interlock Connections ...................................................... 28
Figure 23. Acknowledge Relays with Digital Input .......................... 62
INTRODUCTION
The PROVU® PD6100 is a multipurpose, easy to use digital strain gauge & load cell meter
ideal for weighing and force measurement applications. With a max current of 350 mA at
10 V, it can support up to twelve (12) 350 load cells (minimum load resistance of 28 ),
making it ideal for multipoint weight measurement applications. It accepts mV input
signals up to 300 mV. Three of the front panel buttons can be custom-programmed for a
specific operation. The mV input can be scaled to display the process in two different
scales; for example pounds on the upper display and gallons on the lower display.
The basic model includes an isolated 5 or 10VDC Sensor power supply that can be used
to power the input Sensor or 24 VDC for other devices. An additional isolated 24 VDC
power supply is included with the 4-20 mA output option. A digital input is standard.
A fully loaded PD6100 meter has the following: four SPDT relays, 4-20 mA output, one
10 VDC sensor excitation, and one 24 VDC power supply. The PD6100 capabilities may
be enhanced by adding the following external expansion modules: four SPST relays –
creating an eight-relay process meter, two digital I/O modules with four inputs and four
outputs each, and USB, RS-232 or RS-485 communication adapters.
The eight relays can be used for alarm indication or process control, such as pump
alternation control. The 4-20 mA isolated output, Modbus RTU serial communications,
and digital I/O options make the PD6100 an excellent addition to any system.
6
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
ORDERING INFORMATION
Standard Models
85-265 VAC
Model
PD6100-6R0 PD6100-7R0 No options
PD6100-6R2 PD6100-7R2 2 relays (PD1102*)
PD6100-6R3 PD6100-7R3 4-20 mA output (PD1103*)
PD6100-6R4 PD6100-7R4 4 relays (PD1104*)
PD6100-6R5 PD6100-7R5 2 relays & 4-20 mA output (PD1105*)
PD6100-6R7 PD6100-7R7 4 relays & 4-20 mA output (PD1107*)
*Model number for replacement option card.
SunBright Display Models
85-265 VAC
Model
PD6100-6H0 PD6100-7H0 No options
PD6100-6H2 PD6100-7H2 2 relays (PD1102*)
PD6100-6H3 PD6100-7H3 4-20 mA output (PD1103*)
PD6100-6H4 PD6100-7H4 4 relays (PD1104*)
PD6100-6H5 PD6100-7H5 2 relays & 4-20 mA output (PD1105*)
PD6100-6H7 PD6100-7H7 4 relays & 4-20 mA output (PD1107*)
*Model number for replacement option card.
Accessories
Model Description
PDA1002 DIN rail mounting kit for two expansion modules
PDA1004 4 SPST (Form A) relays
PDA1044 4 digital inputs & 4 digital outputs (2 may be connected)
PDA1200 Meter copy cable
PDA1232 RS-232 serial adapter
PDA1485 RS-485 serial adapter
PDA7485-I RS-232 to RS-422/485 isolated converter
PDA7485-N RS-232 to RS-422/485 non-isolated converter
PDA8008 USB serial adapter
PDA8232-N USB to RS-232 non-isolated converter
PDA8485-I USB to RS-422/485 isolated converter
PDA8485-N USB to RS-422/485 non-isolated converter
PDX6901
12/24 VDC
Model
12/24 VDC
Model
Suppressor (snubber): 0.01 µF/470 , 250 VAC
Options Installed
Options Installed
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
DISPLAY Upper display: 0.60" (15 mm) high, red LEDs
DISPLAY
INTENSITY
DISPLAY
UPDATE RATE
OVERRANGE
UNDERRANGE
DISPLAY
ASSIGNMENT
UNITS lb, kg, ounce, gram, ton, metric ton (tonne), custom units.
PROGRAMMING
METHODS
NOISE FILTER Programmable from 2 to 199 (0 will disable filter)
FILTER BYPASS Programmable from 0.1 to 99.9% of calibrated span
ROUNDING Select 1, 2, 5, 10, 20, 50, or 100
RECALIBRATION All ranges are calibrated at the factory. Recalibration is
MAX/MIN
DISPLAY
PASSWORD
NON-VOLATILE
MEMORY
POWER
OPTIONS
FUSE Required external fuse: UL Recognized, 5 A max, slow
Lower display: 0.46" (12 mm) high, red LEDs
6 digits each (-99999 to 999999), with lead zero blanking
Eight user selectable intensity levels
5/second (200 ms)
Display flashes
Display flashes
The displays may be assigned to PV1, PV2, PCT, max &
min, set points, PV & units, units (lower display only), net &
gross weight, Modbus input, and display millivolts.
Four front panel buttons, digital inputs, PC and MeterView Pro
software, Modbus registers, or cloning using Copy function.
(e.g. rounding = 10, value = 123.45, display = 123.50).
recommended at least every 12 months.
Max/min readings reached by the process are stored until
reset by the user or until power to the meter is cycled.
Three programmable passwords restrict modification of
programmed settings.
Pass 1: Allows use of function keys and digital inputs
Pass 2: Allows use of function keys, digital inputs and editing set/reset points
Pass 3: Restricts all programming, function keys, and digital inputs.
All programmed settings are stored in non-volatile memory
for a minimum of ten years if power is lost.
85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max
or jumper selectable 12/24 VDC 10%, 15 W max
blow; up to 6 meters may share one 5 A fuse
999999
-99999
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
ISOLATED
SENSOR POWER
SUPPLY
NORMAL MODE
REJECTION
ISOLATION 4 kV input-to-power line
OVERVOLTAGE
CATEGORY
ENVIRONMENTAL ProVu Series (PD6100):
MAX POWER
DISSIPATION
CONNECTIONS Removable screw terminal blocks accept 12 to 22 AWG
ENCLOSURE 1/8 DIN, high impact plastic, UL 94V-0, color: black
MOUNTING 1/8 DIN panel cutout required:
TIGHTENING
TORQUE
OVERALL
DIMENSIONS
Terminals P+ & P-: 10 VDC or 5 VDC 10%.12/24 VDC
powered models selectable for 24 (should not be used for strain
gauge/load cell), 10, or 5 VDC supply (internal jumper, see
Sensor Excitation Voltage Selection on page 18).
ProVu Series (PD6100):
85-265 VAC models rated @ 200 mA max, 12/24 VDC powered
models rated @ 350 mA max for 5 or 10 VDC supply, @ 100 mA
max for 24 VDC supply.
ProtEX-MAX (PD8 Series):
All models transmitter supply rated @ 25mA max.
Note: Do not use 24 VDC to power strain gauge bridge
Greater than 60 dB at 50/60 Hz
500 V input-to-output (powered by external supply)
Installation Overvoltage Category II:
Local level with smaller transient overvoltages than
Installation Overvoltage Category III.
Operating temperature range: -40 to 65°C
Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing
ProtEX-MAX (PD8 Series):
T6 Class operating temperature range Ta = -40 to 60°C
T5 Class operating temperature range Ta = -40 to 65°C
See LIM8 ProtEX-MAX instruction manual for additional
details.
ProtEX-MAX (PD8 Series): Maximum power dissipation
limited to 15.1 W. See LIM8 ProtEX-MAX instruction
manual for additional details.
wire, RJ45 for external relays, digital I/O, and serial
communication adapters.
3.622" x 1.772" (92 mm x 45 mm)
Two panel mounting bracket assemblies are provided.
Screw terminal connectors: 5 lb-in (0.56 Nm)
4.68" x 2.45" x 5.64" (119 mm x 62 mm x 143 mm)
(W x H x D)
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
WEIGHT 9.5 oz (269 g)
WARRANTY 3 years parts & labor
Strain Gauge Input
INPUTS Field selectable: 0-15, 0-30, 0-150, 0-300 mV,
ACCURACY ±0.03% of calibrated span ±1 count
MINIMUM LOAD
RESISTANCE
MAXIMUM
EXCITATION
CURRENT
TEMPERATURE
DRIFT
FUNCTIONS Linear with multi-point linearization
MULTI-POINT
LINEARIZATION
LOW-FLOW
CUTOFF
DECIMAL POINT Up to five decimal places or none:
CALIBRATION
RANGE
INPUT
IMPEDANCE
±15, ±25, ±150, ±250 mV, or Modbus PV (Slave)
28 @ 5 V or 10 V
350 mA @ 5 V or 10 V
0.002% of calibrated span/C max from 0 to 65C ambient,
0.005% of calibrated span/C max from -30 to 0C ambient
2 to 32 points for PV or PV1
2 to 8 points for PV2 (Dual-scale feature)
0-999999 (0 disables cutoff function)
d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd
Input
Range
15 mV 0.2 mV
25 mV, 30 mV 0.4 mV
150 mV 2.0 mV
250 mV, 300 mV 4.0 mV
An Error message will appear if the input 1 and input 2
signals are too close together.
Strain Gauge Bridge: Greater than 10 M
mV Source: 200 k
Minimum Span
Input 1 & Input 2
Relays
RATING 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A)
NOISE
SUPPRESSION
external; rated 3 A @ 30 VDC and 125/250 VAC resistive
load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads
Noise suppression is recommended for each relay contact
switching inductive loads; see page 25 for details.
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
DEADBAND 0-100% of span, user programmable
HIGH OR LOW
ALARM
RELAY
OPERATION
RELAY RESET User selectable via front panel buttons or digital inputs
TIME DELAY 0 to 999.9 seconds, on & off relay time delays
FAIL-SAFE
OPERATION
AUTO
INITIALIZATION
User may program any alarm for high or low trip point.
Unused alarm LEDs and relays may be disabled (turn off).
Automatic (non-latching)
Latching (requires manual acknowledge)
Sampling (based on time)
Pump alternation control (2 to 8 relays)
Off (disable unused relays and enable Interlock feature)
Manual on/off control mode
1. Automatic reset only (non-latching), when the input
passes the reset point.
2. Automatic + manual reset at any time (non-latching)
3. Manual reset only, at any time (latching)
4. Manual reset only after alarm condition has cleared (L)
Note: Front panel button or digital input may be assigned to
acknowledge relays programmed for manual reset.
Programmable and independent for each relay
Programmable and independent for each relay.
Note: Relay coil is energized in non-alarm condition.
In case of power failure, relay will go to alarm state.
When power is applied to the meter, relays will reflect the
state of the input to the meter.
Isolated 4-20 mA Transmitter Output
OUTPUT
SOURCE
SCALING RANGE 1.000 to 23.000 mA for any display range
CALIBRATION Factory calibrated: 0.00 to 100.00 = 4-20 mA output
ANALOG OUT
PROGRAMMING
ACCURACY ± 0.1% of span ± 0.004 mA
TEMPERATURE
DRIFT
Process variable (PV), max, min, set points 1-8, Modbus
input, or manual control mode
1.000 mA minimum and 23.000 mA maximum for all
parameters: overrange, underrange, max, min, and break
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.
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
NON-ISOLATED
TRANSMITTER
POWER SUPPLY
EXTERNAL LOOP
POWER SUPPLY
OUTPUT LOOP
RESISTANCE
35 VDC (external)
Terminals I+ & R: 24 VDC 10% . May be used to power
the 4-20 mA output or other devices
gauge). Refer to Figure 7 on page 19 and Figure 17 on page
ProVu Series (PD6100):
All models rated @ 40 mA max.
ProtEX-MAX (PD8 Series):
All models @ 25mA max.
35 VDC maximum
Power supply Minimum Maximum
24 VDC
10 700
100 1200
(except load cell/strain
26.
Modbus® RTU Serial Communications
SLAVE ID 1 – 247 (Meter address)
BAUD RATE 300 – 19,200 bps
TRANSMIT
TIME DELAY
DATA 8 bit (1 start bit, 1 or 2 stop bits)
PARITY Even, Odd, or None with 1 or 2 stop bits
BYTE-TO-BYTE
TIMEOUT
TURN AROUND
DELAY
Note: Refer to the PROVU® Modbus Register Tables located at www.predig.com
for details.
Programmable between 0 and 199 ms
or transmitter always on for RS-422 communication
0.01 – 2.54 second
Less than 2 ms (fixed)
COMPLIANCE INFORMATION
Safety
UL & c-UL LISTED USA & Canada
UL FILE NUMBER E160849
FRONT PANEL UL Type 4X, NEMA 4X, IP65; panel gasket provided
LOW VOLTAGE
DIRECTIVE
UL 508 Industrial Control Equipment
EN 61010-1:2010
Safety requirements for measurement, control, and
laboratory use
12
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Electromagnetic Compatibility
EMISSIONS
Radiated
Emissions
AC Mains
Conducted
Emissions
IMMUNITY
RFI - Amplitude
Modulated
Electrical Fast
Transients
Electrostatic
Discharge
RFI - Conducted
AC Surge
Surge
Power-Frequency
Magnetic Field
Voltage Dips
Voltage
Interruptions
Note:
Testing was conducted on PD6100 meters installed through the
covers of grounded metal enclosures with cable shields grounded at
the point of entry representing installations designed to optimize
EMC performance.
Declaration of Conformity available at www.predig.com
EN 55022:2010
Class A ITE emissions requirements
Class A
Class A
EN 61326-1:2006
Measurement, control, and laboratory equipment
EN 61000-6-2:2005
EMC heavy industrial generic immunity standard
80 -1000 MHz 10 V/m 80% AM (1 kHz)
1.4 - 2.0 GHz 3 V/m 80% AM (1 kHz)
2.0 - 2.7 GHz 1 V/m 80% AM (1 kHz)
±2kV AC mains, ±1kV other
±4kV contact, ±8kV air
10V, 0.15-80 MHz, 1kHz 80% AM
±2kV Common, ±1kV Differential
1KV (CM)
3 A/m 70%V for 0.5 period
40%V for 5 & 50 periods
70%V for 25 periods
<5%V for 250 periods
13
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
SAFETY INFORMATION
!
CAUTION: Read complete
instructions prior to installation
WARNING: Risk of electric
shock or personal injury.
and operation of the meter.
Hazardous voltages exist within enclosure.
Installation and service should be
WARNING!
performed only by trained service
personnel.
INSTALLATION
There is no need to remove the meter from its case to complete the
installation, wiring, and setup of the meter for most applications.
Instructions are provided for setting up a 12/24 VDC powered meter to
operate from 12 VDC and for changing the Sensor power supply to
output 5 or 10 VDC instead of 24 VDC, see page 17 and 18.
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.
Panel Mounting Instructions
Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm x
45 mm). Refer to Figure below, for more details.
Clearance: allow at least 6.0" (152 mm) behind the panel for wiring.
Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).
Recommended minimum panel thickness to maintain Type 4X
rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic 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.
Refer to the following pages for panel mounting diagrams.
14
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
A
A
3.622" (92 mm)
Square Corners to 0.060"
B
1.772
(45mm)
Tolerances:
-0.000 (-0.0mm)
B: +0.024 (+0.6mm)
-0.000 (-0.0mm)
(1.5mm) Max
Panel Cutout
to DIN 43700
: +0.032 (+0.8mm)
Figure 1. 1/8 DIN Panel Cutout Dimensions
Gasket
Panel
Removable
Connectors
Mounting
Bracket
Mounting
Screw
Figure 2. Panel Mounting Details
15
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Mounting Dimensions
Figure 3. Meter Dimensions - Side View
O
N
C
C
N
+
R
-
N
C
C
N
O
C
N
C
N
O
N
N
C
O
C
Figure 4. Meter Dimensions - Top View
16
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Configuration for 12 or 24 VDC Input Power Option
Warning!
configuration.
Meters equipped with the 12/24 VDC power option are shipped
from the factory ready to operate from 24 VDC.
To configure the meter for 12 VDC power:
1. Remove all the connectors.
2. Unscrew the back cover.
3. Slide the back cover about 1 inch.
4. Configure the J9 jumper, located behind the power
connector, for 12 V as shown below.
Do not exceed voltage rating of the selected
J9 CONFIGURATION
+
_
MAIN BOARD
J9
12 V
24 V
Factory
Default
M-LINK
24 VDC
12 VDC
POWER
Figure 5. Jumper Configuration for 12/24 VDC Input Power
17
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Sensor Excitation Voltage Selection (EX+, EX-)
All meters, including models equipped with the 12/24 VDC power
option, are shipped from the factory configured to provide 10 VDC
excitation for the sensor.
If the sensor requires 5 VDC excitation, the internal jumper J3 must
be configured accordingly.
To access the voltage selection jumper:
1. Remove all the wiring connectors.
2. Unscrew the back cover.
3. Slide out the back cover by about 1 ½ inches.
4. Configure the J3 jumper, located behind the input signal
connector, for the desired excitation voltage as shown.
Do not use 24V to power a strain gauge bridge.
!
Caution!
The 24 V jumper configuration should only be
used for mV input applications.
Jumper Configuration
10 V
24 V
5V
MAIN BOARD
INPUT
SIGNAL
Factory Default
10V
be appied t o J4
No jumper should
J
4
5
1
0
V
V
24V
Figure 6. Sensor Excitation Voltage Selection
Connections
All connections are made to removable screw terminal connectors
located at the rear of the meter.
!
Caution!
Use copper wire with 60°C or 60/75°C insulation for all line
voltage connections. Observe all safety regulations.
Electrical wiring should be performed in accordance with all
applicable national, state, and local codes to prevent
damage to the meter and ensure personnel safety.
18
EXSG+
SGEX+
J3
COM
F4
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Connectors Labeling
The connectors’ label, affixed to the meter, shows the location of all
connectors available with requested configuration.
Do not connect any equipment other than Precision
Warning!
Digital’s expansion modules, cables, or meters to the
RJ45 M-LINK connector. Otherwise damage will occur
to the equipment and the meter.
SG- SG+
Figure 7. Connector Labeling for Fully Loaded PD6100
Power Connections
Power connections are made to a two-terminal connector labeled
POWER on Figure 7. The meter will operate regardless of DC polarity
connection. The + and - symbols are only a suggested wiring convention.
POWER
-
+
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
Figure 8. Power Connections
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Signal Connections
Signal connections are made to a six-terminal connector labeled
SIGNAL on Figure 7. The EX- (negative excitation) terminal is used to
sense the sensor excitation voltage for ratiometric operation, when the
sensor is powered externally.
Switch Configuration
Setup and programming is performed both through the front panel buttons
and switch settings shown below. The switch configuration must
correspond to the setup and programming starting on page 29 (same
range, type, etc.).
SG- SG+
34
Figure 9. Strain Gauge Configuration Switch
Excitation (Switch 1)
The excitation switch designates whether the meter will use its internal
power supply or an external power supply.
ON Excitation Internal
Switch
1
OFF Excitation External Excitation
Excitation
When switch is turned
ON, the ProVu's power
supply is used.
When switch is turned
OFF, an external power
supply is used.
20
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Range (Switch 2)
The range switch adjusts the gain of the internal circuitry. Narrower
ranges require more amplification.
Turn this switch ON for the
following input ranges: 15,
30, ±15, or ±25 mV.
Turn this switch OFF for the
following input ranges: 150,
300, ±150, or ±250 mV.
Switch
2
ON Range
OFF Range
Higher
gain
Lower
gain
internal
internal
Polarity (Switch 3)
The polarity switch selects whether the range is unipolar and starts at
zero (i.e. 0 to 30 mV) or bipolar and starts at a negative value, or below
zero (i.e. -15 to +15 mV).
Turn this switch ON for the
following input ranges: 15,
30, 150, or 300.
Turn this switch OFF for
the following input ranges:
±15, ±25, ±150, or ±250
mV.
Switch
3
ON Polarity
OFF Polarity
Range starts
zero (unipolar)
Range starts
below zero
(bipolar)
at
Source (Switch 4)
The source switch tells the ProVu whether the input is a strain gauge
bridge (i.e. Figure 11), or it is a signal from a 2 or 4 wire transducer, or
mV source (i.e. Figure 12)
Turn this switch ON if the
connected source is a
transducer*
Turn this switch OFF if the
source is a strain gauge
bridge
Switch
4
ON Source
OFF Source
Source is mV
input transducer
Source is strain
gauge bridge
*Ratio should be set to NO in Setup Input Menu
21
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Shunt Resistor (Switch 5)
The PD6100 provides a means of simulating strain in a strain gauge
bridge circuit via a 60.4K shunt resistor included in the meter. This will
simulate an approximate 70% full-scale load in the case of a 350
strain bridge.
Switch
5
ON Shunt
OFF Shunt
Shunt resistor is
connected
input bridge.
Shunt resistor is
disconnected
the input bridge.
to the
from
Turn switch ON when you
want to simulate a strain
load
Turn this switch OFF to
remove the shunt resistor
Strain Gauge Connections
The following figures show examples of strain gauge connections.
There is a 5-position DIP switch (CONFIG) to set up the input ranges and
ratiometric operation.
NOTE: Refer to Switch Configuration starting on page 20 for proper
configuration switch positioning.
INPUT SIGNAL
F4
EX+COM
2134
EX-
SG+SG-
5
6
EX+
SG- SG+
EX-
Figure 10. Strain Gauge Powered by Internal Supply
22
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
NOTE: Refer to Switch Configuration starting on page 20 for proper
switch positioning for the following wiring configurations.
INPUT SIGNAL
F4 SG+SG-
EX+
COM
2134
EX-
5
6
EX+
+
5-10 VDC
SG- SG+
Power
Supply
EX-
-
Figure 11. Strain Gauge Powered by External Supply
INPUT SIGNAL
F4
EX+COM
2134
EX+ SG- SG+
3-Wire 100 mV
Transducer
EX-
SG+SG-
5
6
4 5321
ON
CONFIG
Notes
Two-wire mV signals: Connect positive
to SG+ and negative to SGFour-wire transducer: Connect EX- to
negative power transducer terminal.
Figure 12. mV Transducer Input Connections
Shunt Calibration
The PD6100 is equipped with a means of simulating strain in a strain
gauge bridge circuit, via an included shunt resistor in the meter. This
technique is performed by enabling the “shunt resistor” switch (switch
5), which in turn shunts one leg of a connected strain bridge with a
23
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
predetermined resistive load(60.4k). This technique can be used as a
means of verifying instrumentation by simulating a physical
input. With no load connected, the enabling of the shunt resistor
(switch 5) will simulate approximately a 70% F.S. load in the case of a
350 Strain Bridge.
EX+
SG- SG+
EX-
Figure 13. Shunt Resistor
Modbus RTU Serial Communications
Serial communications connection is made to an RJ45 connector
labeled M-LINK on Figure 7. Use the PDA1232 for RS-232 interfacing,
the PDA8008 for USB interfacing, or the PDA1485 for RS-485
interfacing. The same port is used for interfacing with all expansion
modules (e.g. external relays, digital I/O).
Use the PDA1200 meter copy cable for meter-to-meter interfacing for
cloning purposes (i.e. copying settings from one meter to other meters).
Relay Connections
Relay connections are made to two six-terminal connectors labeled
RELAY1 – RELAY4 on Figure 7. Each relay’s C terminal is common
only to the normally open (NO) and normally closed (NC) contacts of the
corresponding relay. The relays’ C terminals should not be confused
with the COM (common) terminal of the INPUT SIGNAL connector.
RELAY4 RELAY3
4365 21
CNONO NC NC C
Figure 14. Relay Connections
RELAY2 RELAY1
4365 21
CNONO NC NC C
24
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Switching Inductive Loads
The use of suppressors (snubbers) is strongly recommended when switching
inductive loads to prevent disrupting the microprocessor’s operation. The
suppressors also prolong the life of the relay contacts. Suppression can be
obtained with resistor-capacitor (RC) networks assembled by the user or
purchased as complete assemblies. Refer to the following circuits for RC network
assembly and installation:
C
C
R
R
Figure 15. AC and DC Loads Protection
Choose R and C as follows:
R: 0.5 to 1 for each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts
Notes:
1. Use capacitors rated for 250 VAC.
2. RC networks may affect load release time of solenoid loads. Check to
confirm proper operation.
3. Install the RC network at the meter's relay screw terminals. An RC network
may also be installed across the load. Experiment for best results.
Use a diode with a reverse
breakdown voltage two to
three times the circuit
voltage and forward current
at least as large as the load
current.
Figure 16. Low Voltage DC Loads Protection
RC Networks Available from Precision Digital
RC networks are available from Precision Digital and should be applied to each
relay contact switching an inductive load. Part number: PDX6901.
Relays are de-rated to 1/14th HP (50 watts) with an inductive load.
Note:
25
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
4-20 mA Output Connections
Connections for the 4-20 mA transmitter output are made to the
connector terminals labeled MA OUT. The 4-20 mA output may be
powered internally or from an external power supply.
24 V
24 V
RELAY1
321
MA OUT
+
4-20 mA Input
Remote Display,
Chart Recorder, Etc.
RI- I+
132
-
RELAY1
321
+
4-20 mA
Input Meter
-
MA OUT
-
+
12-35 VDC
Power
Supply
RI- I+
132
Figure 17. 4-20 mA Output Connections
Analog Output Power Supply
If the analog output is not using the 24 VDC supply to power the output
loop, it can be used for other things. The I+ Terminal is the +24 V and
the R terminal is the return.
F4 Digital Input Connections
A digital input, F4, is standard on the meter. This digital input is
connected with a normally open contact across F4 and COM, or with an
active low signal applied to the F4.
The functionality of the F4 input is set up in the Advanced Features,
User menu.
INPUT SIGNAL
F4
COM
2134
EX+
SG-
SG+
5
EX-
6
Figure 18. F4 Digital Input Connections
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
External Relays & Digital I/O Connections
The relay and the digital I/O expansion modules PDA1004 & PDA1044
are connected to the meter using a CAT5 cable provided with each
module. The two RJ45 connectors on the expansion modules are
identical and interchangeable; they are used to connect additional
modules to the system.
Note: The jumper located between the RJ45 connectors of the
PDA1044 must be removed on the second digital I/O module in
order for the system to recognize it as module #2.
Do not connect or disconnect the expansion modules
Warning!
with the power on!
More detailed instructions are provided with each
optional expansion module.
Figure 19. Expansion Modules & DIN Rail Mounting Kit
RLY5 RLY6 RLY7 RLY8
12
NO C NO C NO C NO C
345678
Figure 20. External Relays Module Connections
27
Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
123456
+5 I1 I2 I3 I4 O1
5 VDC GND
DI 1-4 DO 1-4
78
O2 O3
910
O4 G
Figure 21. Digital I/O Module Connections
Interlock Relay Feature
As the name implies, the interlock relay feature reassigns one, or more,
alarm/control relays for use as interlock relay(s). Interlock contact(s) are
wired to digital input(s) and trigger the interlock relay. This feature is
enabled by configuring the relay, and relative digital input(s) (see page
66). In one example, dry interlock contacts are connected in series to
one digital input which will be used to force on (energize) the assigned
interlock power relay when all interlock contacts are closed (safe). The
interlock relay front panel LED flashes when locked out. The interlock
relay would be wired in-series with the load (N/O contact). See below.
Figure 22. Interlock Connections
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
SETUP AND PROGRAMMING
The meter is factory calibrated prior to
shipment to read in millivolts. The
calibration equipment is certified to NIST
standards.
Overview
There is a 5-position DIP switch to set the meter input selection. See
Figure 9 on page 20 to setup the switch.
Setup and programming is done through the front panel buttons.
After power and input signal connections have been completed and
verified, apply power to the meter.
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Model PD6100 Strain Gauge/Load Cell Meter Instruction Manual
Front Panel Buttons and Status LED Indicators
Button
Symbol
Description LED Status
Menu
1-8 Alarm 1-8 indicator
Right arrow/F1
Zero Meter
Up arrow/F2
Reset Tare
Enter/F3
Tare
Note:
Alarms 5-8 are enabled when
relay expansion module is
installed.
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 during digit or
decimal point programming.
Press or hold the Up arrow button to scroll through the menus,
decimal point, or to increment the value of a digit.
Press the Enter button to access a menu or to accept a setting.
Press and hold the Menu button for three seconds to access the
advanced features of the meter.
1-8
M
T
G
1-4
Note:
LEDs for relays in manual mode
flash with the “M” LED every 10
seconds.
30
Flashing: Relay in
manual control mode
Flashing: Tare (Net)
Gross
Flashing: Relay
interlock switch open
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