Precision Digital Corporation ProtEX-MAX PD8 Series User manual

PRECISION DIGITAL CORPORATION
89 October Hill Road• Holliston MA 01746 USA
Tel [phone] • Fax [phone] www.predig.com
PD8 Series ProtEX-MAX
Supplemental Instruction Manual
Modern, Sleek and Practical Enclosure
Display Mountable at 0°, 90°, 180°, & 270° Degrees
Explosion-Proof, IP68, NEMA 4X Enclosure
P
ROVU®, Trident X2, or Vigilante®II Functionality
SafeTouch®Through-Glass Button Programming
Flanges for Wall or Pipe Mounting
Modbus®RS-485 Serial Communications Standard on Most Models
Free MeterView®and MeterView®Pro Software
All Models Include Sunlight Readable Displays

PD8 Series Explosion-Proof Instrument Supplemental Manual
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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 instrument.
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. 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 instrument cover in explosive environments when the cir-
cuit is live.
• Cover must be fully engaged to meet flameproof/explosion-proof require-
ments.
• Information in this manual supersedes all enclosure, compliance, and agency
approval information included in additional product manuals included with this
product.
Limited Warranty
Precision Digital Corporation warrants this product against defects in material or
workmanship for the specified period under “Specifications” from the date of ship-
ment 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
All trademarks mentioned in this document are the property of their respective
owners.
© 2011-2015 Precision Digital Corporation. All rights reserved.
www.predig.com

PD8 Series Explosion-Proof Instrument Supplemental Manual
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INTRODUCTION
The ProtEX-MAX has been designed to offer the functions and features of any
PROVU, Trident X2, or Vigilante II model in a great looking full-approved explosion-
proof product. The PD8 series is not just a 1/8 DIN meter mounted in an explosion-
proof housing; a special bezel and electronics were designed exclusively for the
ProtEX-MAX. The bezel and faceplate give the front panel a very finished appear-
ance and house the additional electronics for the PD8. The user has the ability to
program and operate the instrument without opening the housing using the built-in
SafeTouch through-glass button programming or serial communications port with free
Modbus protocol included (serial communications not present on PD8-154 or
PD8-158 Series models).
How to Use this Manual
This ProtEX-MAX includes this manual addendum and a complete panel meter in-
struction manual for a PROVU, Trident X2, or Vigilante II. This manual addendum
combines with the additional included manual to provide you complete product infor-
mation. This manual contains all the information on the ProtEX-MAX enclosure,
SafeTouch through-glass button programming, and the on-board functions that may
include RS-485 serial communications, digital inputs, digital outputs, and other fea-
tures not included in the base model. These features have electrical wiring connec-
tions on the round board mounted to the rear of the electronics housing..
!
NOTICE
Information in this manual supersedes all enclosure, compliance,
and agency approval information included in additional product
manuals included with this product.
For information on programming your product, the user interfaces, or general instru-
ment specifications, please refer to the PROVU, Trident X2, or Vigilante II instruction
manual included with this ProtEX-MAX.
Example: A PD8-6000-6H2 will include this manual as well as the PD6000 PROVU
instruction manual (LIM6000).
Refer to the PROVUPD6000 manual for all setup, programming, and most electronics
specifications. Refer to this manual for operation of the SafeTouch through-glass
button programming, on-board RS-485 connections, digital inputs/outputs, enclosure
information, and all approvals.
!
NOTICE
For PD8-6xxx/7xxx models only:
Transmitter supplies rated @ 25 mA max each

PD8 Series Explosion-Proof Instrument Supplemental Manual
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MODEL NUMBER DESCRIPTIONS
Model Description Integrated
Functionality
PD8-154 4 Point Alarm Annunciator Vigilante II PD154
PD8-158 8 Point Alarm Annunciator Vigilante II PD158
PD8-765 Large Display Universal Input Meter Trident X2 PD765
PD8-6000 Process Meter PROVU PD6000
PD8-6060 Dual-Input Process Meter PROVU PD6060
PD8-6080 Modbus Serial Input Scanner PROVU PD6080
PD8-6081 Feet & Inches Modbus Serial Input Scanner PROVU PD6081
PD8-6100 Strain Gauge Meter PROVU PD6100
PD8-6200 Analog Input Rate/Totalizer PROVU PD6200
PD8-6210 Analog Input Batch Controller PROVU PD6210
PD8-6262 Dual Analog Input Batch Controller PROVU PD6262
PD8-6300 Pulse Input Rate/Totalizer PROVU PD6300
PD8-6310 Pulse Input Batch Controller PROVU PD6310
PD8-6363 Dual Pulse Input Rate/Totalizer PROVUPD6363
PD8-7000 Temperature Meter PROVU PD7000
Ordering Configuration Example
The model number of a PD8 Series ProtEX-MAX is in the format of PD8- followed by
the numeric model number of the product whose features the ProtEX-MAX shares.
Note that only “H” SunBright display models are available ProtEX-MAX models with
integrated PROVUfunctionality.
Example: A PD8-6000-6H2 is the model number of a dual-line process meter with the
features and options of a PD6000-6H2; all PD6000 PROVU features with AC line
power, 2 relays, and a SunBright sunlight readable display.
PROVUBased Configuration Example
PD8 - 6 0 0 0 - 6 H 2
Any PROVUSunBright Display Model
Trident X2 Based Configuration Example
PD8 - 7 6 5 - 6 X 2 - 1 0
Any Trident X2 Model
Vigilante II Based Configuration Example
PD8 - 1 5 4 - 6 R 2 - 1
Any Vigilante II Model

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Table of Contents
INTRODUCTION---------------------------------------------------------------------- 3
MODEL NUMBER DESCRIPTIONS--------------------------------------------- 4
Ordering Configuration Example--------------------------------------------------------4
SPECIFICATIONS-------------------------------------------------------------------- 7
Instrument Specifications -----------------------------------------------------------------7
General -------------------------------------------------------------------------------------------7
Serial Communications---------------------------------------------------------------------7
Digital Inputs & Outputs--------------------------------------------------------------------8
External Switch Contacts ------------------------------------------------------------------8
Product Ratings and Approvals; --------------------------------------------------------9
COMPLIANCE INFORMATION---------------------------------------------------------- 10
Safety ------------------------------------------------------------------------------------------- 10
Electromagnetic Compatibility--------------------------------------------------------- 10
SAFETY INFORMATION----------------------------------------------------------11
INSTALLATION----------------------------------------------------------------------11
Unpacking ------------------------------------------------------------------------------------- 12
Pre-Installed Conduit/Stopping Plug------------------------------------------------- 12
Mounting--------------------------------------------------------------------------------------- 12
Cover Jam Screw --------------------------------------------------------------------------- 12
CONNECTIONS----------------------------------------------------------------------13
Required & Factory Wired Connections -------------------------------------------- 13
Digital I/O Connections ------------------------------------------------------------------- 18
External Switch Contacts ---------------------------------------------------------------- 19
Serial Communications Connections------------------------------------------------ 21
Using PROVU Serial Adapters----------------------------------------------------------- 24
OPERATION--------------------------------------------------------------------------25
Overview --------------------------------------------------------------------------------------- 25
SafeTouch®Buttons ----------------------------------------------------------------------- 25
Digital I/O -------------------------------------------------------------------------------------- 26
Serial Communications Overview----------------------------------------------------- 26
TROUBLESHOOTING -------------------------------------------------------------28
Troubleshooting Tips---------------------------------------------------------------------- 28
SERVICE-------------------------------------------------------------------------------29
MOUNTING DIMENSIONS--------------------------------------------------------30
EC DECLARATION OF CONFORMITY---------------------------------------31

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Table of Figures
Figure 1: Integrated Vigilante II (PD8-154-6 & PD8-158-6) Required
Connections......................................................................................14
Figure 2: Integrated Vigilante II (PD8-154-7 & PD8-158-7) Required
Connections......................................................................................15
Figure 3: Integrated Trident X2 (PD8-765) Required Connections.......16
Figure 4: Integrated PROVURequired Connections...............................17
Figure 5: Digital I/O Connections............................................................18
Figure 6: External Switch Contacts........................................................20
Figure 7: ProtEX-MAX Connections to a Serial Converter ...................21
Figure 8: RS-485 Wiring...........................................................................22
Figure 9: RS-485 Two-Wire Multi-Drop Wiring.......................................23
Figure 10: General Four-Wire Network Connection..............................27
Figure 11: General Two-Wire Network Connection...............................27
Figure 12: Enclosure Dimensions – Front View ....................................30
Figure 13: Enclosure Dimensions – Side Cross Section View.............30

PD8 Series Explosion-Proof Instrument Supplemental Manual
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SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
Instrument Specifications
Refer to the data sheet and manual for the meter/controller integrated to the PD8.
General
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 30.
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 3 years parts and labor
Serial Communications
These specifications are not applicable to PD8-154 and PD8-154 series, which have
no serial communications.
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)

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Digital Inputs & Outputs
Note: PD8 Series PROVU integrated functionality models only.
See notices and warnings on page 18.
CHANNELS 4 digital inputs & 4 digital outputs per module
SYSTEM
One expansion module may be added for a total of 8 in-
puts & 8 outputs
Note: The jumper located between the RJ45 connectors
must be removed on the expansion module.
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.
External Switch Contacts
PD8-765 Series Trident X2 integrated functionality models only. See Vigilante II
Instruction Manual for information on PD8-154 and PD8-158 Series external switch
contact specifications.
Open State +5 VDC open contact on switch input terminals
Closed State Closed contact switch input terminal to common/ground, active low 0 to 0.4 VDC, or open collector transistor acti-
vated input

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Product Ratings and Approvals;
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
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 ProtEX-MAX must be installed in accordance with
the ATEX directive 94/9/EC, and the product certificate Sira 12ATEX1182.

PD8 Series Explosion-Proof Instrument Supplemental Manual
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COMPLIANCE INFORMATION
Safety
LOW VOLTAGE
DIRECTIVE EN 61010-1:2010
Safety requirements for measurement, control, and
laboratory use
Electromagnetic Compatibility
EMISSIONS EN 55022:2010
Class A ITE emissions requirements
Radiated
Emissions Class A
AC Mains
Conducted
Emissions
Class A
IMMUNITY EN 61326-1:2006
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 Tran-
sients ±2 kV AC mains, ±1kV other
Electrostatic
Discharge ±4 kV contact, ±8kV air
RFI - Conducted 10 V, 0.15-80 MHz, 1kHz 80% AM
AC Surge ±2 kV Common, ±1kV Differential
Surge 1 kV (CM)
Power-Frequency
Magnetic Field 3 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

PD8 Series Explosion-Proof Instrument Supplemental Manual
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SAFETY INFORMATION
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.
INSTALLATION
Install in accordance with applicable local and national regulations (e.g. NEC).
For Installation in USA: The ProtEX-MAX must be installed in accordance with the
National Electrical Code (NEC) NFPA 70.
For Installation in Canada: The ProtEX-MAX 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 ProtEX-MAX must be installed in accordance with
the ATEX directive 94/9/EC and the product certificate Sira 12ATEX1182.
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.
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.

PD8 Series Explosion-Proof Instrument Supplemental Manual
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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.
Pre-Installed Conduit/Stopping Plug
The PD8 Series 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.
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.
Mounting
The ProtEX-MAX Series has four slotted mounting flanges that should be used for
pipe mounting or wall mounting.
Refer to Mounting Dimensions, page 30 for details.
WARNING
Do not attempt to loosen or remove flange bolts while the
instrument is in service.
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.

PD8 Series Explosion-Proof Instrument Supplemental Manual
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CONNECTIONS
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.
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 ProtEX-MAX, 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 Connections
The ProtEX-MAX comes with several pre-wired connections. These connections are
detailed below, and must be maintained in order for the instrument to function
properly.
For details on the required wiring to maintain basic ProtEX-MAX functions, refer to
the appropriate below section for the specific ProtEX-MAX model number.
WARNING
Observe all safety regulations. Electrical wiring should be per-
formed in accordance with all agency requirements and applicable
national, state, and local codes to prevent damage to the meter
and ensure personnel safety.

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Required Connections on PD8-154-6 and PD8-158-6 Series Models
ProtEX-MAX units with Vigilante II integrated functionality have two factory wired
connectors. Four wires connect the remote switch inputs of the annunciator. Two
wires connect the DC power supply on the main meter electronics to the ProtEX-MAX
connector board. These must remain connected as shown for the SafeTouch Buttons
to function on these models.
!
NOTICE
The connections described in this section must remain connected
for the SafeTouch buttons to function.
Figure 1: Integrated Vigilante II (PD8-154-6 & PD8-158-6) Required Connections

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Required Connections on PD8-154-7 and PD8-158-7 Series Models
Low voltage PD8-154-7 and PD8-158-7 models require low voltage power to be
supplied to the power supply connector on the ProtEX-MAX connector board as well
as to the integrated Vigilante II connections as described in the Vigilante II Instruction
Manual.
In addition, four wires connect the remote switch inputs of the annunciator to the
ProtEX-MAX connector board. These wires must remain connected for the
SafeTouch buttons to function.
!
NOTICE
The connections described in this section must remain connected
for the SafeTouch buttons to function.
Figure 2: Integrated Vigilante II (PD8-154-7 & PD8-158-7) Required Connections

PD8 Series Explosion-Proof Instrument Supplemental Manual
16
Required Connections on PD8-765 Series Models
ProtEX-MAX units with Trident X2 integrated functionality have two factory wired
connectors. A modular cable must connect from the rear of the integrated Trident X2
electronics to the ProtEX-MAX connector board. The Trident X2 integrated models
also have a 5 position external switch connector wired from the rear of the integrated
Trident X2 electronics to the ProtEX-MAX connector board as shown below. This
must remain connected as shown to the ProtEX-MAX connector board for the
SafeTouch Buttons to function on these models.
!
NOTICE
The connections described in this section must remain connected
for the SafeTouch buttons to function.
Figure 3: Integrated Trident X2 (PD8-765) Required Connections

PD8 Series Explosion-Proof Instrument Supplemental Manual
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Required Connections on PD8-6000, PD8-6060, PD8-6080, PD8-6081, PD8-6100,
PD8-6200, PD8-6210, PD8-6300, PD8-6310, and PD8-7000 Series Models
One factory installed M-LINK cable connects the integrated PROVU electronics to the
ProtEX-MAX connector board.
Figure 4: Integrated PROVURequired Connections

PD8 Series Explosion-Proof Instrument Supplemental Manual
18
Digital I/O Connections
ProtEX-MAX models with integrated PROVU functionality have a 10 position terminal
block for connecting the digital inputs and outputs. See Model Number Descriptions
on page 4 for details on ProtEX-MAX integrated instruments.
123456
+5 I1 I2 I3 I4 O1
78
O2 O3
910
O4 G
DI 1-4 DO 1-4
5 VDC GND
Figure 5: Digital I/O Connections
(PROVUIntegrated Instruments Only)
!
NOTICE
The digital inputs are configured at the factory to function identi-
cally to the front panel pushbuttons in order to work with the
SafeTouch buttons. Changing the programming of the digital in-
puts will affect the function of the SafeTouch buttons.
WARNING
Observe all safety regulations. Electrical wiring should be per-
formed in accordance with all agency requirements and applicable
national, state, and local codes to prevent damage to the meter
and ensure personnel safety.

PD8 Series Explosion-Proof Instrument Supplemental Manual
19
External Switch Contacts
ProtEX-MAX models with integrated Vigilante II, PROVU,or Trident X2 may be wired
with external switch contacts. See Model Number Descriptions on page 4 for details
on ProtEX-MAX integrated instruments.
For Vigilante II Integrated Functionality Instruments
The ProtEX-MAX includes a removable screw terminal connector with external switch
contacts. See the Vigilante II instruction manual for more information on connecting
these external switch contacts.
For PROVUIntegrated Functionality Instruments
The ProtEX-MAX includes 4 digital inputs. These digital inputs are preconfigured at
the factory to function as external contacts to duplicate the front button functions of
the instrument. The factory configuration uses the following corresponding digital
input terminals for external switch contacts.
Digital Input
Connection Factory Default Function
I1 MENU
I2 RIGHT arrow
I3 UP arrow
I4 ENTER arrow
See Digital Inputs & Outputs in the Specification on page 8 for details on the digital
inputs.
!
NOTICE
The digital inputs are configured at the factory to function identi-
cally to the front panel pushbuttons in order to work with the
SafeTouch buttons. Changing the programming of the digital in-
puts will affect the function of the SafeTouch buttons.

PD8 Series Explosion-Proof Instrument Supplemental Manual
20
For Trident X2 Integrated Functionality Instruments
The ProtEX-MAX includes a removable screw terminal connector for external switch
contacts. External switch contacts may be wired across the switch contact and COM
on the connector labeled Trident X2 External Switch Connections in the Figure
below.
Figure 6: External Switch Contacts
(Trident X2 Integrated Instruments Only)
!
NOTICE
Removing the connectors or changing the default wiring of the
ProtEX-MAX external switch connectors will affect the function of
the SafeTouch buttons.
See External Switch Contacts in the Specification on page 8 for electrical
specifications for using the external switch contacts.