Explosion Proof Digital Display
Instruction Manual
®
Explosion Proof
• 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs
• Multi-Pump Alternation Control
• Display One Input in Two Different Scales (e.g. Height & Volume)
• Signal Input Conditioning for Flow & Round Horizontal Tank
• 32-Point, Square Root, or Exponential Linearization
• Modern, Sleek and Practical Enclosure
• Display Mountable at 0°, 90°, 180°, & 270° Degrees
• Explosion-Proof, IP68, NEMA 4X Enclosure
• Through-Glass Button Programming
• Flanges for Wall or Pipe Mounting
• Superluminous Sunlight Readable Display
• Free USB Programming Software & Cable
• 2 or 4 Relays + Isolated 4-20 mA Output Options
• Input Power Options Include 85-265 VAC or 12-24 VDC
• Isolated 24 VDC @ 25 mA Transmitter Power Supply
• Modbus
Automation Products Group
1025 W 1700 N • Logan UT 84321 USA
Tel (435) 753-7300 • Fax (435) 753-7490
®
RTU Communication Protocol Standard
www.apgsensors.com
Explosion Proof Digital Display Instruction Manual
CAUTION: Read complete
instructions prior to
installation and operation
of the meter.
WARNING: Risk of
electric shock or
personal injury.
Warning!
• 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. Automation Products Group, Inc. 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 instrument cover in explosive environments when the
circuit is live.
• Cover must be fully engaged to meet flameproof/explosion-proof
requirements.
• Information in this manual supersedes all enclosure, compliance, and
agency approval information included in additional product manuals
included with this product.
!
Disclaimer
The information contained in this document is subject to change without notice.
Automation Products Group 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.
Limited Warranty
Automation Products Group, Inc. warrants this product against defects in material or
workmanship for the specified period under “Specifications” from the date of
shipment from the factory. Automation Products Group’s liability under this limited
warranty shall not exceed the purchase value, repair, or replacement of the defective
unit.
Registered Trademarks
Modbus® is a Registered Trademark of Schneider Automation Inc. All other
trademarks mentioned in this document are the property of their respective owners.
© 2018 Automation Products Group, Inc. All rights reserved.
www.apgsensors.com
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Explosion Proof Digital Display Instruction Manual
Table of Contents
Table of Contents ----------------------------------------- 3
Table of Figures ------------------------------------------- 4
Introduction ------------------------------------------------- 4
Ordering Information ------------------------------------ 5
Specifications ---------------------------------------------- 6
General --------------------------------------------------------------- 6
Process Input ------------------------------------------------------- 6
Relays ----------------------------------------------------------------- 7
Isolated 4-20 mA Transmitter Output ----------------------- 7
Serial Communications ----------------------------------------- 7
Digital Inputs & Outputs ---------------------------------------- 7
MeterView Pro ------------------------------------------------------ 7
Product Ratings and Approvals; ----------------------------- 8
Compliance Information -------------------------------- 9
Safety------------------------------------------------------------------ 9
Electromagnetic Compatibility ------------------------------- 9
Safety Information -------------------------------------- 10
Installation ------------------------------------------------ 10
Unpacking --------------------------------------------------------- 10
Pre-Installed Conduit/Stopping Plug --------------------- 11
Mounting ----------------------------------------------------------- 11
Cover Jam Screw------------------------------------------------ 11
Transmitter Supply Voltage Selection (P+, P-) -------- 11
Connections ------------------------------------------------------ 12
Required & Factory Wired Connection ------------------- 12
Connectors Labeling ------------------------------------------ 13
Power Connections-------------------------------------------- 13
Signal Connections -------------------------------------------- 14
Current (mA) Connections -------------------------------- 14
Voltage (V) Connections ---------------------------------- 14
Serial Communications Connections --------------------- 15
Three Wire Connections ---------------------------------- 15
Using DDD and DBD Serial Adapters -------------------- 17
Relay Connections -------------------------------------------- 18
Switching Inductive Loads ----------------------------------- 18
F4 Digital Input Connections -------------------------------- 19
4-20 mA Output Connections ------------------------------- 19
Analog Output Transmitter Power Supply --------------- 19
Interlock Relay Feature--------------------------------------- 19
Digital I/O Connections --------------------------------------- 20
External Switch Contacts ------------------------------------ 20
Setup and Programming------------------------------ 21
Overview ----------------------------------------------------------- 21
Through-Glass Buttons --------------------------------------- 21
Buttons and Status LED Indicators ----------------------- 22
MeterView® Pro Software ------------------------------------- 23
MeterView Pro Installation ----------------------------------- 23
Display Functions & Messages----------------------------- 24
Main Menu --------------------------------------------------------- 25
Setting Numeric Values --------------------------------------- 25
Setting Up the Meter (setup) -------------------------------- 26
Setting the Input Signal (Input) --------------------------- 26
Setting the Input Units or Custom Tags (units) ------- 27
Setting the Decimal Point (dEc pt) ----------------------- 27
Programming the Meter (prog) ----------------------------- 28
Program Menu for Single Scale Process ------------- 28
Program Menu for Dual-Scale Level Applications -- 28
Multi-Point Calibration & Scaling ----------------------- 28
Scaling the Meter (SCALE) -------------------------------- 29
Dual-Scale for Level Application ------------------------ 29
Calibrating the Meter with External Source (Cal) --- 30
Setting the Display Parameter & Intensity (dsplay) -- 31
Setting the Relay Operation (relay) ---------------------- 32
Setting the Relay Action ------------------------------------- 32
Programming Set and Reset Points ---------------------- 32
Setting Fail-Safe Operation --------------------------------- 33
Programming Time Delay ----------------------------------- 33
Relay Action for Loss of 4-20 mA Input (Loop Break) 33
Relay and Alarm Operation Diagrams ------------------- 33
High Alarm Operation (Set > Reset) ---------------------- 33
Low Alarm Operation (Set < Reset)----------------------- 33
High Alarm with Fail-Safe Operation (Set > Reset) --- 34
Low Alarm with Fail-Safe Operation (Set < Reset) ---- 34
Pump Alternation Control Operation ---------------------- 35
Relay Sampling Operation ---------------------------------- 35
Signal Loss or Loop Break Relay Operation ------------ 36
Time Delay Operation ---------------------------------------- 36
Relay Operation Details --------------------------------------- 37
Overview --------------------------------------------------------- 37
Relays Auto Initialization ------------------------------------- 37
Fail-Safe Operation ------------------------------------------- 37
Front Panel LEDs ---------------------------------------------- 37
Latching and Non-Latching Relay Operation ----------- 38
Non-Latching Relay (Auto)---------------------------------- 38
Non-Latching Relay (A-man) ----------------------------- 38
Latching Relay (LatcH) -------------------------------------- 38
Latching Relay (Lt-Clr) ------------------------------------- 38
Acknowledging Relays --------------------------------------- 39
Pump Alternation Control Applications (Altern) ------ 39
Setting Up the Interlock Relay (Force On) Feature --- 41
Interlock Relay Operation Example -------------------- 41
Scaling the 4-20 mA Analog Output (Aout) ------------- 41
Reset Menu (reset) -------------------------------------------- 42
Control Menu (Contrl) ---------------------------------------- 42
Setting Up the Password (pass)---------------------------- 42
Protecting or Locking the Meter ---------------------------- 42
Making Changes to a Password Protected Meter ----- 43
Disabling Password Protection ----------------------------- 43
Advanced Features Menu ------------------------------------ 44
Advanced Features Menu & Display Messages ------- 44
Noise Filter (filter) ----------------------------------------- 45
Noise Filter Bypass (bypass) ------------------------------- 45
Rounding Feature (round) ---------------------------------- 45
Modbus RTU Serial Communications (serial) ------- 46
Serial Communications Overview ------------------------- 46
Select Menu (SElect) ---------------------------------------- 48
Signal Input Conditioning (Functn) ----------------------- 48
Low-Flow Cutoff (CutofF) ----------------------------------- 49
Analog Output Programming (AoutPr) ------------------- 50
Programmable Function Keys User Menu (user) ----- 50
Tare (tare) ------------------------------------------------------ 51
Internal Source Calibration (ICAL) ------------------------ 52
Meter Operation ------------------------------------------ 53
Buttons Operation ---------------------------------------------- 53
Through-Glass Buttons --------------------------------------- 53
F4 Operation ------------------------------------------------------ 54
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Explosion Proof Digital Display Instruction Manual
Maximum/Minimum Readings ------------------------------ 54
Troubleshooting ----------------------------------------- 55
Diagnostics Menu (diag) ------------------------------------- 55
Determining Software Version ------------------------------ 55
Reset Meter to Factory Defaults---------------------------- 55
Factory Defaults & User Settings -------------------------- 56
Troubleshooting Tips ------------------------------------------ 57
Service ------------------------------------------------------ 58
Mounting Dimensions --------------------------------- 58
EU Declaration of Conformity ----------------------- 59
Table of Figures
Figure 1. Transmitter Supply Voltage Selection ............ 11
Figure 2: Integrated Required Connections .................. 12
Figure 3. Connector Labeling for Fully Loaded PD6000 13
Figure 4. Power Connections ........................................ 13
Figure 5. Transmitters Powered by Internal Supply ...... 14
Figure 6. Transmitter Powered by Ext. Supply or Self-
Powered ................................................................ 14
Figure 7. Voltage Input Connections ............................. 14
Figure 8: DDX Meter Connections to a Serial Converter15
Figure 9. Three-Wire RS485 Connection ...................... 15
Figure 10: RS-485 Wiring .............................................. 16
Figure 11: RS-485 Two-Wire Multi-Drop Wiring ............ 17
Figure 12. Relay Connections ....................................... 18
Figure 13. AC and DC Loads Protection ........................ 18
Figure 14. Low Voltage DC Loads Protection ................ 18
Figure 15. F4 Digital Input Connections ......................... 19
Figure 16. 4-20 mA Output Connections........................ 19
Figure 17. Interlock Connections ................................... 19
Figure 18: Digital I/O Connections ................................. 20
Figure 19. Acknowledge Relays w/ Through-Glass Button
or Digital Input ........................................................ 39
Figure 20: General Four-Wire Network Connection ....... 47
Figure 21: General Two-Wire Network Connection ....... 47
Figure 22: Enclosure Dimensions – Front View ............. 58
Figure 23: Enclosure Dimensions – Side Cross Section
View ....................................................................... 58
Introduction
This explosion-proof process meter offers all the functionality of the analog input digital panel
meter as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. Its
superluminous LED digits make it easily readable in smoke, dust, fog, and even direct sunlight.
It accepts a process current (4-20 mA) or process voltage (0-5V, 1-5V, etc.) signal and displays
it on a dual-line, 6-digit display.
The meter includes a 24 VDC power supply to drive the transmitter and can be equipped with
up to four internal relays and a 4-20 mA output. The meter can be programmed and operated
without opening the housing by using the built-in through-glass buttons or the RS485 serial
communication port with free Modbus® protocol.
A fully loaded meter has the following: four SPDT relays, 4-20 mA output, and two 24 VDC power
supplies. The four relays can be used for alarm indication or process control applications such as
pump alternation control. The 4-20 mA isolated output, Modbus RTU serial communications, and
digital I/O options make this an excellent addition to any hazardous area application.
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Explosion Proof Digital Display Instruction Manual
Ordering Information
Model Number
Reorder Number
Power
Options Installed
PD8-6000-6H0-AP
DDX-A00
85-265 VAC
No options
PD8-6000-6H2-AP
DDX-A02
85-265 VAC
2 relays
PD8-6000-6H3-AP
DDX-A10
85-265 VAC
4-20 mA output
PD8-6000-6H4-AP
DDX-A04
85-265 VAC
4 relays
PD8-6000-6H5-AP
DDX-A12
85-265 VAC
2 relays & 4-20 mA output
PD8-6000-6H7-AP
DDX-A14
85-265 VAC
4 relays & 4-20 mA output
PD8-6000-7H0-AP
DDX-D00
12-24 VDC
No options
PD8-6000-7H2-AP
DDX-D02
12-24 VDC
2 relays
PD8-6000-7H3-AP
DDX-D10
12-24 VDC
4-20 mA output
PD8-6000-7H4-AP
DDX-D04
12-24 VDC
4 relays
PD8-6000-7H5-AP
DDX-D12
12-24 VDC
2 relays & 4-20 mA output
PD8-6000-7H7-AP
DDX-D14
12-24 VDC
4 relays & 4-20 mA output
Model Number
Description
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
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
Suppressor (snubber): 0.01 µF/470 , 250 VAC
SunBright Display Models
Accessories
Manufactured by Precision Digital Corporation, 233 South St, Hopkinton MA 01748 USA
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Explosion Proof Digital Display Instruction Manual
Display
Line 1: 0.60" (15 mm) high, red LEDs
Line 2: 0.46" (12 mm) high, red LEDs
6 digits each (-99999 to 999999), with lead zero
blanking
Display
Intensity
Eight user selectable intensity levels
Display
Update Rate
5/second (200 ms)
Overrange
Display flashes 999999
Underrange
Display flashes -99999
Display
Assignment
Display lines 1 and 2 may be assigned to PV1,
PV2, PCT, d r-u, d gross, d nt-g, max/min, max
& min, set points, units (display line 2 only), or
Modbus input.
Programming
Methods
Four front panel buttons, digital inputs, PC and
MeterView Pro software, or Modbus registers.
Noise Filter
Programmable from 2 to 199 (0 will disable filter)
Filter Bypass
Programmable from 0.1 to 99.9% of calibrated
span
Recalibration
All ranges are calibrated at the factory.
Recalibration is recommended at least every
12 months.
Max/Min
Display
Max/min readings reached by the process are
stored until reset by the user or until power to the
meter is turned off.
Password
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.
Power
Options
85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max
or 12-24 VDC 10%, 15 W max
Powered over USB for configuration only
Isolated
Transmitter
Power Supply
Terminals P+ & P-: 24 VDC 10%. selectable for 24,
10, or 5 VDC supply (internal jumper J4).
All models transmitter supply rated @ 25mA max.
Non-Volatile
Memory
All programmed settings are stored in nonvolatile memory for a minimum of ten years if
power is lost.
Fuse
Required external fuse: UL Recognized, 5 A
max, slow blow; up to 6 meters may share one 5
A fuse
Normal Mode
Rejection
Greater than 60 dB at 50/60 Hz
Isolation
4 kV input/output-to-power line
500 V input-to-output or output-to-P+ supply
Overvoltage
Category
Installation Overvoltage Category II:
Local level with smaller transient overvoltages
than Installation Overvoltage Category III.
Environmental
T6 Class operating temperature range
Ta = -40 to 60°C
T5 Class operating temperature range
Ta = -40 to 65°C
Max Power
Dissipation
Maximum power dissipation limited to 15.1 W.
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.
Default conduit connections: Four ¾" NPT
threaded conduit openings and two ¾" NPT
metal conduit plugs with 12 mm hex key fitting
installed. Additional conduit opening
configurations may be available; verify quantity
and sizes on specific device labeling during
installation.
Mounting
Four slotted flanges for wall mounting or NPS
1½" to 2½" or DN 40 to 65 mm pipe mounting.
See Mounting Dimensions on page 58.
Tightening
Torque
Screw terminal connectors: 5 lb-in (0.56 Nm)
Overall
Dimensions
6.42" x 7.97" x 8.47" (W x H x D)
(163 mm x 202 mm x 215 mm)
Approximate
Shipping
Weight
16.0 lbs (7.26 kg)
Warranty
Please see https://www.apgsensors.com/aboutus/terms-conditions for full warranty statement.
Inputs
Field selectable:
0-20, 4-20 mA, 10 V (0-5, 1-5, 0-10 V), Modbus
PV (Slave)
Accuracy
±0.03% of calibrated span ±1 count,
square root & programmable exponent accuracy
range: 10-100% of calibrated span
Temperature
Drift
0.005% of calibrated span/C max from 0 to
65C ambient,
0.01% of calibrated span/C max from -40 to
0C ambient
Signal Input
Conditioning
Linear, square root, programmable exponent, or
round horizontal tank volume calculation
Multi-Point
Linearization
2 to 32 points for PV or PV1
2 to 8 points for PV2 (Dual-scale Level feature)
Programmable
Exponent
1.0001 to 2.9999
Round H Tank
Diameter & Length: 999.999 inch or cm
calculates volume in gallons or liters
respectively.
Low-Flow
Cutoff
0-999999 (0 disables cutoff function)
Decimal Point
Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d, or
dddddd
Calibration
Range
Input Range
Minimum Span Input 1 & Input 2
4-20 mA
0.15 mA
10 V
0.01 V
An error message will appear if the input 1
and input 2 signals are too close together.
Input
Impedance
Voltage ranges: greater than 500 k
Current ranges: 50 - 100 (depending on resettable
fuse impedance)
Input
Overload
Current input protected by resettable fuse, 30
VDC max.
Fuse resets automatically after fault is removed.
Specifications
Except where noted all specifications apply to operation at +25°C.
General
Process Input
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Explosion Proof Digital Display Instruction Manual
F4 Digital Input
Contacts
3.3 VDC on contact. Connect normally open
contacts across F4 to COM.
F4 Digital Input
Logic Levels
Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC
HART
Transparency
Analog input will not interfere with existing
HART communications on the wired 4-20 mA
signal
Relays
Rating
2 or 4 SPDT (Form C) internal and/or 4 SPST
(Form A) 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
Noise suppression is recommended for each
relay contact switching inductive loads; see
page 18 for details.
Deadband
0-100% of span, user programmable
High or Low
Alarm
User may program any alarm for high or low trip
point.
Unused alarm LEDs and relays may be disabled
(turn off).
Relay
Operation
Automatic (non-latching) and/or manual reset
Latching (requires manual acknowledge)
with/without clear
Pump alternation control (2 to 4 relays)
Sampling (based on time)
Off (disable unused relays and enable Interlock
feature)
Manual on/off control mode
Relay Reset
User selectable via front panel buttons or digital
inputs
1. Automatic reset only (non-latching), when
the input passes the reset point.
2. Automatic + manual reset at any time (nonlatching)
3. Manual reset only, at any time (latching)
4. Manual reset only after alarm condition has
cleared (latching)
Note: Front panel button or digital input may be
assigned to acknowledge relays
programmed for manual reset.
Time Delay
0 to 999.9 seconds, on & off relay time delays
Programmable and independent for each relay
Fail-Safe
Operation
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.
Auto
Initialization
When power is applied to the meter, relays will
reflect the state of the input to the meter.
Output Source
Process variable (PV), max, min, set points 1-8,
Modbus input, or manual control mode
Scaling Range
1.000 to 23.000 mA for any display range
Calibration
Factory calibrated: 4.000 to 20.000 = 4-20 mA
output
Analog Out
Programming
23.000 mA maximum for all parameters:
Overrange, underrange, max, min, and break
Accuracy
± 0.1% of 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.
Isolated
Transmitter
Power Supply
Terminals I+ & R: 24 VDC 10%. May be used to
power the 4-20 mA output or other devices.
Refer to Figure 16 on page 19. All models @
25mA max.
External Loop
Power Supply
35 VDC maximum
Output Loop
Resistance
Power supply
Minimum
Maximum
24 VDC
10
700
35 VDC
(external)
100
1200
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status Indication
Separate LEDs for Power (P), Transmit (TX),
and Receive (RX)
Slave Id
1 – 247 (Meter address)
Baud Rate
300 – 19,200 bps
Transmit
Time Delay
Programmable between 0 and 199 ms
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
0.01 – 2.54 second
Turn Around
Delay
Less than 2 ms (fixed)
Note: Refer to the Modbus Register Tables located at
www.apgsensors.com for details.
Channels
4 digital inputs & 4 digital outputs
Digital Input
Logic High
3 to 5 VDC
Digital Input
Logic Low
0 to 1.25 VDC
Digital Output
Logic High
3.1 to 3.3 VDC
Digital Output
Logic Low
0 to 0.4 VDC
Source Current
10 mA maximum output current
Sink Current
1.5 mA minimum input current
+5 V
Terminal
To be used as pull-up for digital inputs only.
Connect normally open pushbuttons across +5
V & DI 1-4.
WARNING
DO NOT use +5 V terminal (pin 1)
to power external devices.
Function
Assignment
The on-board digital inputs (1-4) are designed to
mimic the behavior of the front panel buttons
(Menu, F1, F2, & F3).
If you wish to change their behavior, re-assign
F1-F3 to the desired function, then change the
corresponding digital input to match.
System
Requirements
Microsoft® Windows® XP/Vista/7/8/10
Communications
USB 2.0 (Standard USB A to Micro USB B)
Configuration
Configure device settings one at a time
Serial Communications
Isolated 4-20 mA Transmitter Output
Digital Inputs & Outputs
MeterView Pro
7
Explosion Proof Digital Display Instruction Manual
FM
Enclosure: Type 4X; IP66
Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1, T5/T6
Class I, Zone 1, AEx d, IIC Gb T5/T6
Zone 21, AEx tb IIIC T90°C; Ta -40°C to +65°C
T6 Ta = -40°C to +60°C; T5 Ta = -40°C to +65°C
Certificate Number: 3047283
CSA
Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1
Class I Zone 1 Ex d IIC
Zone 21 Ex tb IIIC T90°C
-40°C < Tamb. < +60° C; Temperature Code T6
-40°C < Tamb. < +65° C; Temperature Code T5
Enclosure Type 4X & IP66
Certificate Number: 2531731
ATEX
II 2 G D
Ex d IIC T* Gb
Ex tb IIIC T90°C Db IP68
Ta = -40°C to +*°C
*T6 = -40°C to +60°C
*T5 = -40°C to +65°C
Certificate number: Sira 12ATEX1182
IECEx
Ex d IIC T* Gb
Ex tb IIIC T90°C Db IP68
Ta = -40°C to +*°C
*T6 = -40°C to +60°C
*T5 = -40°C to +65°C
Certificate Number: IECEx SIR 12.0073
Product Ratings and Approvals;
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. Cable
must be suitable for 90°C.
Year of Construction
This information is contained within the serial number with the first four digits representing the
year and month in the YYMM format.
For European Community: The DDX meter must be installed in accordance with the ATEX
directive 94/9/EC, and the product certificate Sira 12ATEX1182.
8
Explosion Proof Digital Display Instruction Manual
Compliance Information
Low Voltage Directive
EN 61010-1:2010
Safety requirements for measurement, control, and laboratory use
Emissions
EN61326-1:2013
Measurement, control, and laboratory use - Industrial
EN 55022:2010
Class A ITE emissions requirements
EN61000-6-4:2007+A1:2011
Emission for heavy industrial environments - Generic
Radiated Emissions
Class A
AC Mains Conducted
Emissions
Class A
Immunity
EN 61326-1:2013
Measurement, control, and laboratory equipment
EN 61000-6-2:2005
EMC heavy industrial generic immunity standard
RFI - Amplitude
Modulated
80 -1000 MHz 10 V/m 80% AM (1 kHz)
1.4 - 2.0 GHz 10 V/m 80% AM (1 kHz)
2.0 - 2.7 GHz 10 V/m 80% AM (1 kHz)
Electrical Fast
Transients
±2kV AC mains, ±1kV other
Electrostatic
Discharge
±4kV contact, ±8kV air
RFI - Conducted
10V, 0.15-80 MHz, 1kHz 80% AM
AC Surge
±2kV Common, ±1kV Differential
Surge
1KV (CM)
Power-Frequency
Magnetic Field
30 A/m 70%V for 0.5 period
Voltage Dips
40%V for 5 & 50 periods
70%V for 25 periods
Voltage Interruptions
<5%V for 250 periods
Safety
Electromagnetic Compatibility
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Explosion Proof Digital Display Instruction Manual
WARNINGS
• Read complete instructions prior to installation and operation of the instrument.
• Installation and service should be performed only by trained service personnel. Service
requiring replacement of internal sub-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 or within 2" (50mm) for
Zone installations.
• Verify that the operating atmosphere of the instrument is consistent with the appropriate
hazardous locations certifications.
• If the instrument is installed in a high voltage environment and a fault or installation error
occurs, high voltage may be present on any lead
• Read all product labels completely and follow all instructions and requirements listed on the
labels for installation or service.
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 or within 2"
(50mm) for Zone installations.
Safety Information
Installation
Install in accordance with applicable local and national regulations (e.g. NEC).
For Installation in USA: The DDX meter must be installed in accordance with the National Electrical
Code (NEC) NFPA 70.
For Installation in Canada: The DDX meter must be installed in accordance with the Canadian Electrical
Code CSA 22.1. All power supplies below 36 V and input circuits must be derived from a CSA Approved
Class 2 source.
For European Community: The DDX meter must be installed in accordance with the ATEX directive
94/9/EC and the product certificate Sira 12ATEX1182.
Wiring connectors are accessed by opening the enclosure. To access electrical connectors, remove the 2
captive screws and then remove the electronics module. Connectors are on the rear of the electronics
module.
Unpacking
Remove the instrument from packing box. Inspect the packaging and contents for damage. Report
damages, if any, to the carrier.
If any part is missing or the instrument malfunctions, please contact your supplier or the factory for
assistance.
10
Explosion Proof Digital Display Instruction Manual
Pre-Installed Conduit/Stopping Plug
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.
WARNING
Do not attempt to loosen or remove flange bolts
while the instrument is in service.
The PD8-6000 is supplied with two pre-installed conduit plugs for installations that do not require the use
of all conduit entries. The conduit/stopping plugs include an internal 12mm hexagonal socket recess for
removal. The pre-installed plugs and their installation are included in the hazardous area approvals for
the PD8 Series enclosure.
Mounting
The meter has four slotted mounting flanges that should be used for pipe mounting or wall mounting.
Refer to Mounting Dimensions, page 58 for details.
Cover Jam Screw
The cover jam screw should be properly installed once the instrument has been wired and tested in a
safe environment. The cover jam screw is intended to prevent the removal of the instrument cover in a
flameproof environment without the use of tools. Using a M2 hex wrench, turn the screw clockwise until
the screw contacts the aluminum enclosure. 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.
Transmitter Supply Voltage Selection (P+, P-)
All meters, including models equipped with the 12-24 VDC power option, are shipped from the factory
configured to provide 24 VDC power for the transmitter or sensor.
If the transmitter requires 5 or 10 VDC excitation, the internal jumper J4 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 inch.
4. Configure the J4 jumper, located behind the input signal connector, for the desired excitation
voltage as shown.
Figure 1. Transmitter Supply Voltage Selection
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Explosion Proof Digital Display Instruction Manual
WARNINGS
• Static electricity can damage sensitive components.
• Observe safe handling precautions for static-sensitive components.
• Use proper grounding procedures/codes.
• If the instrument is installed in a high voltage environment and a
fault or installation error occurs, high voltage may be present on
any lead or terminal.
• Follow all fusing and wiring precautions requirements for the
instrument integrated to the PD8 Series model number being
connected.
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.
Connections
To access the connectors, remove the enclosure cover and unscrew the two captive screws that fasten
the electronics module. Signal connections are made to de-pluggable connectors on the back of the
electronics module.
Some connectors may be provided already connected. These connections are required for proper
operation of the meter and should not be removed unless instructed to by this manual.
Wires marked as being used for testing purposes should be removed.
Grounding connections are made to the two ground screws provided on the base – one internal and one
external.
After all connections have been completed and verified, apply power to the unit.
Required & Factory Wired Connection
The meter comes with a pre-wired connection. This connection is detailed below and must be maintained
in order for the instrument to function properly.
Figure 2: Integrated Required Connections
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Explosion Proof Digital Display Instruction Manual
Connectors Labeling
Warning!
Do not disconnect the RJ45 M-LINK connector cable.
Otherwise the instrument will not function properly.
Figure 4. Power Connections
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+
-
The connectors’ label, affixed to the meter, shows the location of all connectors available with requested
configuration.
Figure 3. Connector Labeling for Fully Loaded PD6000
Power Connections
Power connections are made to a two-terminal connector labeled POWER on Figure 3 on page 13. The
meter will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring
convention.
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Explosion Proof Digital Display Instruction Manual
Signal Connections
Signal connections are made to a six-terminal connector labeled SIGNAL on Figure 3. The COM
(common) terminal is the return for the 4-20 mA and the 10 V input signals.
Current (mA) Connections
The following figures show examples of current connections.
There are no switches or jumpers to set up for current inputs. Setup and programming is performed
through the front panel buttons.
Figure 5. Transmitters Powered by Internal Supply
Figure 6. Transmitter Powered by Ext. Supply or Self-Powered
The current input is protected against current overload by a resettable fuse. The display may or may not
show a fault condition depending on the nature of the overload.
The fuse limits the current to a safe level when it detects a fault condition, and automatically resets itself
when the fault condition is removed.
Voltage (V) Connections
The following figures show examples of voltage connections.
There are no switches or jumpers to set up for voltage inputs. Setup and programming is performed
through the front panel buttons.
Figure 7. Voltage Input Connections
The meter is capable of accepting any voltage from -10 VDC to +10 VDC.
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Explosion Proof Digital Display Instruction Manual
Serial Communications Connections
DDX Meter to RS-485
Serial Converter Connections
RS-485 Serial
Converter
DDX RS-485
Connections
DO DI
DO DI
DI DO
DI DO
F4 COM DI DI DO DO
TX
RX
1 2 3 4 51 2
The meter has a 5-position terminal block for connecting RS-485 serial devices.
Figure 8 details the wiring connections from the meter to an RS-485 serial converter (such as the PDA7485
or PDA8485) for a four-wire network.
Figure 8: DDX Meter Connections to a Serial Converter
The meter has three diagnostic LEDs: a Power (P) LED to show when the module is powered properly, a
Transmit Data (TX) LED to show when the module is being transmitted to by the PC side, and a Receive
Data (RX) LED to show when the module is sending data to a receiving device.
The following diagrams detail how to connect the RS-485 serial communications from the meter to a RS485/RS-232 serial converter (PDA7485) in four-wire and two-wire configurations.
Three Wire Connections
In order to wire the 5 pins for use as a 3-wire half-duplex RS-485 connection, it is necessary to create a
jumper connection between DI – DO and DI- – DO- as shown below.
Figure 9. Three-Wire RS485 Connection
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Explosion Proof Digital Display Instruction Manual
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.
Figure 10: RS-485 Wiring
Notes:
1. Termination resistors are optional and values depend on the cable length and characteristic
impedance. Consult the cable manufacturer for recommendations.
2. Refer to RS-232 to RS-485 Converter documentation for further details.
3. Use shielded cable, twisted-pairs plus ground. Connect ground shield only at one location.
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Explosion Proof Digital Display Instruction Manual
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.
NOTICE
DDD AND DBD expansion modules and serial adapters are not
included in the hazardous area approvals of the DDX meter. The
PDA1232 may be used only while the DDX meter is in a safe area
and will disable some features while installed.
!
Notes:
1. Termination resistors are optional, and values depend on the cable length and characteristic
impedance. Consult the cable manufacturer for recommendations.
2. Refer to RS-232 to RS-485 Converter documentation for further details.
3. Use shielded cable, twisted-pair plus ground. Connect ground shield only at one location.
Figure 11: RS-485 Two-Wire Multi-Drop Wiring
When using more than one instrument in a multi-drop or multi-point mode, each meter must be provided
with its own unique address. See Modbus RTU Serial Communications on page 46.
Using DDD and DBD Serial Adapters
DDD AND DBD expansion modules and serial adapters are not recommended for use with the DDX meter.
It is recommended that any serial protocol conversion required on the RS-485 communications
connection be performed using a PDA7485 RS-232 to RS-485 or PDA8485 USB to RS-485 serial
converter located in a safe area.
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Explosion Proof Digital Display Instruction Manual
C NONO NC NC C
RELAY4 RELAY3
4 36 5 2 1
C NONO NC NC C
RELAY2 RELAY1
4 36 5 2 1
C
R
C
R
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.
Relay Connections
Relay connections are made to two six-terminal connectors labeled RELAY1 – RELAY4 on Figure 3.
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.
Figure 12. Relay Connections
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:
Figure 13. AC and DC Loads Protection
Choose R and C as follows:
R: 0.5 to 1 Ω 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.
Figure 14. Low Voltage DC Loads Protection
RC Networks Available from Automation Products Group
RC networks are available from Automation Products Group and should be applied to each relay contact
switching an inductive load. Part number: PDX6901.
Note: Relays are de-rated to 1/14th HP (50 watts) with an inductive load.
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