Technical Data
FLEX Ex
1797 Series
Intrinsically Safe I/O FLEX ExTM is a modular I/O system that mounts directly to the
controlled equipment in the hazardous area. This eliminates the need
for IS barriers/isolators and separation of control and process. We
have taken our experience gained with the standard FLEX I/OTM
system and used it to create an intrinsically safe system with the same
look, feel, and ease of use.
Distributed Architecture FLEX Ex leverages advanced technologies allowing the application to
move to a distributed architecture in the hazardous area.
2
Overview
FLEX Ex
Overview
Overall Design of the
FLEX Ex System
FLEX Ex combines a terminal strip and intrinsic-safety isolation with
an I/O interface. Use the terminal strip on the terminal base to wire
your field devices directly. The FlexEx design also offers these
features:
• modularity for distributed IS systems
• all of the features of a larger, rack-based system
• installation near the field devices to reduce wiring costs and
complexity
• terminations for all field wiring eliminating the need for
marshalling or extra terminal strips
• ControlNetTM-based networking solution with ControlNet ExTM
products
• DIN rail mounting
FLEX Ex provides additional value if system problems develop.
The terminal base lets you remove and insert modules under power
without rewiring or disrupting your system. Combining your
field-wiring terminations, IS isolation, and the I/O interface into the
same location saves you time, money, and makes your system easier
to maintain and troubleshoot. Additional benefits include:
• dual-fault protection IS circuits provide the highest fault
tolerance
• I/O circuitry provides full IS field-device protection
• modules that are conformally coated to meet the noxious gas
requirements of ISA-S71.04-1985 severity level G3 for: hydrogen
sulfide, sulfur dioxide, chlorine, nitrogen dioxide, hydrogen
fluoride, ammonia and ozone
• the modules themselves are IS protected for installation in
hazardous environments
FLEX Ex modules may be removed and inserted while operating
under power. Network module maintenance and cable connections
can be made in the hazardous area while the system is in operation
and the area is hazardous. No equipment shutdown or area purging is
necessary during these procedures, as the modules, network, and
their connections are intrinsically safe.
Publication 1797-2.1 - August 2001
FLEX Ex
Overview
ControlNet Ex Synergy
3
The combination of a ControlNet fiber hub (1786-RPA and -RPFM) and
a ControlNet Ex fiber hub (1797-RPA and -RPFM) allows for flawless,
high-speed, deterministic data flow and messaging between
hazardous and safe areas. This combination functions as an
intrinsically safe isolator between hazardous and safe areas and can
provide long-distance communication.
Safe Area
PLC-5/20CTM processor or
PLC-5/40CTM processor
ProcessLogixTM I/O
SLC 500TM processor
ControlNet network
ControlLogixTM processor
.
.
.
.
1
host computer with
1784-KTC card
1786 fiber hub
FLEX I/O
fiber
1797 fiber hub
Hazardous Area
FLEX Ex
.
.
1
coax
40051
The diagnostic capabilities and determinism of the ControlNet
network make it an ideal choice for hazardous area applications.
The redundant media ControlNet Ex communications adapter
(1797-ACNR15) is high-speed and capable of communicating with as
many as 8 I/O modules for up to 128 I/O points.
ControlNet and ControlNet Ex repeater hubs facilitate the mixing of IS
and non-IS systems via a communications link incorporating fiber
optics for effective high-speed communication between hazardous
and safe areas.
An intrinsically safe network and I/O system installed in the
hazardous area allows your data to be gathered at its origin and
transported out of the area with the minimum amount of wiring. Cable
penetrations into the hazardous area, cable trays, and conduit are all
drastically reduced.
Publication 1797-2.1 - August 2001
4
Overview
Entity-Based Architecture
FLEX Ex
Entity parameters provide a system of quantifying and matching safe
levels for voltage, current, inductance, and capacitance when
connecting field devices and system devices together.
Configuration of the FLEX Ex system is based on the entity parameter
method. Using entity parameters allows high system flexibility in
matching field and system devices. This provides maximum utility to
the IS system designer and installer.
Entity Parameters
FLEX Ex uses entity parameters to rate its intrinsically safe modules.
Inputs and outputs are specified with:
• open-circuit voltage (Uo or Voc)
• short-circuit current (Io or Isc)
• allowed capacitance (Co or Ca)
• allowed inductance (Lo or La)
Switched outputs are specified as if they were inputs.
Field devices using entity parameters are specified with:
• maximum input voltage (Ui or Vmax)
• maximum input current (Ii or Imax)
• maximum internal capacitance (Ci)
• maximum internal inductance (Li)
In use, the sum of all the input Ci or Li in a control loop cannot
exceed the Co or Lo and the sum of all the Uo or Io cannot exceed the
input Ui or Ii.
This is not meant to be a design example, only a short explanation of
how entity-based architectures help simplify IS system design.
Publication 1797-2.1 - August 2001
FLEX Ex
Overview
Entity Parameters Example
5
An output channel and the valve it will drive are illustrated in the
following figure. By comparing entity parameters, you can quickly
determine the appropriate match.
cable length = 10m
+
268Ω
21V
P/I transmitter
EEx ia IIC T4
Ui=30V
Ii=165mA
Ci=22.5nF
Li=730uH
Ci<10pF/m
Li<0.5uH/m
R<0.1Ω/m
sig
22Ω
1797-IE8 Analog Input
EEx ia/ib IIB/IIC T4
Uo<23.7V
Io<93.5mA
IIB
Ca=560nF
La=10mH
IIC
Ca=66nF
La=2.5mH
Module
Uo
Io
Ca
La
< or =
< or =
> or =
> or =
Module
Uo<23.7V
Io<92.5mA
Ca=66nF
La=2.5mH
< or =
< or =
> or =
> or =
Total Loop
Ui
Ii
Ci
Li
=
=
=
=
Total Loop
Ui=30V
Ii=165mA
Ci=22.6nF
Li=735uH
=
=
=
=
Transmitter
Ui
Ii
Ci
+
Li
+
Distance
Transmitter
Ui=30V
Ii=165mA
Ci=22.5nF +
+
Li=730uH
Distance
Cable
(length
*
Ci per length)
(length
*
La per length)
Cable
(10m
*
Ci=10pF/m)
(10m
*
La =0.5uH/m)
40052
In this example, the combination is compatible because the valve can
withstand:
• Ui
• Ii
=
30V
=
165mA
These values are higher than what the output can provide:
• Uo =
• Io =
23.7V
93.5mA
In the same way, the valve is characterized by:
• Ci
• Li
=
22.5nF
=
730µH
These values are lower than what the output allows:
• Co =
• Lo =
66nF
2.5mH
Publication 1797-2.1 - August 2001
6
Overview
FLEX Ex
About the FLEX Ex System
FLEX Ex consists of three space-saving components:
• communication (adapters)
• terminal base units
• I/O modules
Bus Connectors
Adapter
Terminal Base
Keyswitch
Flexbus Connector
Ex I/O Module
1797-ACNR15
Ex
PWR
PWR
Terminal Strips
20125-M
Field Power
Connection Terminals
Use the adapter to power the I/O bus for as many as
eight modules.
Two separate connection terminals for field power let
you daisy-chain power connections to adjacent terminal
bases depending on power consumption.
Removable power connections allow for easy wiring.
Publication 1797-2.1 - August 2001
Use a the three-tier terminal base to wire
directly to field devices.
Terminate all of your wiring on the terminal base with
no need for terminal blocks.
Use the terminals to daisy-chain power
connections to adjacent terminal bases, or
connect individual power supplies to each base to
isolate modules as dictated by module power
requirements.
Adjust the keyswitch to prevent incorrect
module insertion into a preconfigured terminal base.
Exchange terminal bases without moving other bases
in your system.
Plug the Ex I/O module into the terminal base. Use
the module to connect to the I/O bus and field
devices.
Remove and insert a module without
disturbing field wiring, other I/O modules, or
system power.
FLEX Ex
Mount and Remove Your
System Easily
Overview
7
You can horizontally or vertically mount the FLEX Ex system on
a standard 35mm DIN rail. The adapter and terminal base easily snap
on the DIN rail by hand. Use a flat-blade screwdriver to remove
components from the DIN rail.
Screw holes allow you to horizontally or vertically panel-mount your
system in an enclosure. An example of a DIN-rail mounted system is
shown below.
ATTENTION
!
When properly installed, FLEX Ex is grounded
through the DIN rail to chassis ground. Use
zinc-plated, yellow-chromated steel DIN rail to
assure proper grounding. Using other DIN rail
materials (e.g. aluminum, plastic, etc.) which can
corrode, oxidize, or are poor conductors can result
in improper or intermittent platform grounding.
If installing FLEX Ex on non-recommended DIN rail
materials, use the mounting holes provided in each
terminal base or a 1794-NM1 mounting kit with
approved mounting bracket. Use mounting screws
with star washers to provide the FLEX Ex platform
with a chassis ground connection that is not likely to
be affected by shock, vibration, or oxidation over
time.
DIN Rail
A-B part no. 199-DR1
DIN 46277-3
(35 x 7.5mm)
Screw holes are available
for panel-mounting.
Components are
slotted to accept a
DIN rail.
1797-ACNR15
PWR
20127-M
Locking tab connector holds
terminal base onto DIN rail.
ATTENTION
The hook (on the terminal base) and adjacent
connection point (on the communication adapter)
keep the terminal bases tight together.
!
Publication 1797-2.1 - August 2001
8
Overview
FLEX Ex
Design Your Configuration
You can use as many as eight terminal bases per adapter. This
flexibility allows a wide variety of I/O channels per adapter. Mix and
match digital and analog I/O to meet your application needs.
Some examples include:
•
•
•
•
•
128 digital inputs
64 digital inputs and 16 digital outputs
64 analog inputs
32 analog inputs and 32 analog outputs
32 digital inputs, 8 digital outputs, 24 analog inputs, and 8
analog outputs
Any combination of digital I/O or analog modules.
Adapter
20128-M
As many as eight terminal bases.
What this Technical Data
Contains
Use the following tables to find more information on the FLEX Ex
system.
For Information On
Intrinsic Safety Terminology
10
Common Specifications
13
Environmental Conditions
14
Support, Training, and Repair Services
54
For Information On
Communications Dual Media Adapter
System
Repeaters
Taps
Terminators
Publication 1797-2.1 - August 2001
See Page
Catalog Number Description
See Page
1797-ACNR15/B
Dual Media ControlNet Ex 1.5 Adapter
20
1797-RPA
ControlNet Ex Coax Drop Repeater Module
21
1797-RPFM
ControlNet Ex 3km Fiber Media Port Adapter
22
1797-TPS
ControlNet Ex Straight T-Tap
23
1797-TPR
ControlNet Ex Right Angle T-Tap
23
1797-TPYS
ControlNet Ex Straight Y-Tap
23
1797-TPYR
ControlNet Ex Right Angle Y-Tap
23
1797-XT
ControlNet Ex 75Ω Terminator
23
1797-TCAP
ControlNet Tap Terminator
23
FLEX Ex
Overview
For Information On
Terminal Bases Terminal Base Units
Catalog Number Description
See Page
1797-TB3
3-Tier Screw Clamp Terminal Base Unit
24
1797-TB3S
3-Tier Spring Clamp Terminal Base Unit
25
1797-IBN16
7.5V dc 16 pt Non-Isolated NAMUR Input
Module
26
1797-OB4D
24V dc 4 pt Non-Isolated Source Output
Module
28
1797-IE8
8 pt 16 bit Single-Ended Non-Isolated Analog
Input Module
30
Analog Input
1797-IE8NF
8 pt 16 bit Single-Ended Non-Isolated Analog
Input Module with Noise Filter
32
Analog Output
1797-OE8
8 pt 13 bit Single-Ended Non-Isolated Analog
Output Module
34
1797-IRT8
8 pt 16 bit Non-Isolated RTD/Thermocouple
mV Input Module
36
1797-IJ2
2 Input Frequency Module
38
1797-PS2N
24V DC In Quad-Ex DC Out Power Supply
- Conduit Pipe Thread
41
1797-PS2E
24V DC In Quad-Ex DC Out Power Supply
- Increased Safety
41
1797-BOOT
ControlNet Ex BNC Boot
48
1797-INS
ControlNet Ex Trunk Insulators Kit
48
1797-EXMK
FLEX Ex Cable Marking Kit
48
1794-CE1
FLEX I/O Extender Cable, 0.3m (1ft)
49
1794-CE3
FLEX I/O Extender Cable, 0.9m (3ft)
49
1797-BIC
Bus Isolator Module - Hazardous Modules to
IS Modules
51
1797-CEC
Flexbus Connector
51
-
Flexbus Metric Feed-Through
53
-
Flexbus NPT Feed-Through
53
1797-CE1S
FLEX Ex Extender Cable, 0.3m (1ft)
53
1797-CE3S
FLEX Ex Extender Cable, 0.9m (3ft)
53
Digital DC Input
DC Output
Analog Analog Input
Specialty Thermocouple/mV/RT
DInput
Frequency Input
Power Supply DC Quad-Ex
Accessories
Extender Cables
Media Bus Isolator Module
Feed Throughs
Extender Cables
9
Publication 1797-2.1 - August 2001
10 Intrinsic Safety Terminology
FLEX Ex
Intrinsic Safety Terminology
Understanding Some
Intrinsic Safety
Terminology
Read the following sections for more information on the general
guidelines of intrinsic safety.
Hazardous Area Designation
A hazardous area is designated as any location in which a combustible
material is or may be present in the atmosphere in sufficient
concentration to produce an ignitable mixture.
The North American method identifies these areas by Class, Division,
and Group while the IEC (CENELEC) designates these areas by Zone
and Gas Group.
Recently, North America has adopted the Zone method of identifying
hazardous locations as an option to the Division method.
Class Designation
Class identifies the type of hazardous atmosphere.
Class I
Gas or vapor
Class II
Dust
Class III
Fiber or flying (no group designation)
Division/Zone Designations
Division/Zone identifies the likelihood of a hazardous atmosphere
being present.
Division Method
(North America)
Ignitable mixture present continuously
(long periods)
Division 1
Ignitable mixture present intermittently
Ignitable mixture is not normally present
Publication 1797-2.1 - August 2001
Division 2
IEC Standard
Zone Method
Zone 0
(Zone 20-Dust)
Zone 1
(Zone 21-Dust)
Zone 2
(Zone 22-Dust)
FLEX Ex
Intrinsic Safety Terminology
11
Gas/Dust Groups
Hazardous locations are grouped according to their ignition
properties.
Typical Gas
IEC Gas Group
North American Gas Group
Acetylene
IIC
A
Hydrogen
IIC
B
Ethylene
IIB
C
IIA
D
I
D1
Metal Dust
-
E
Coal Dust
-
F
Grain Dust
-
-
Propane
Methane
1
1
Mining applications under jurisdiction of MSHA.
Use in Class II and III (Dusts and Fibers) Hazardous Locations (North America)
FLEX Ex modules are rated for installation in Class I Division 1 & 2,
Groups A-D hazardous areas. They are also rated to connect to field
devices that are located in Class I, II, or III, Groups A-G hazardous
areas.
If FLEX Ex components are to be installed in a Class II or III location
in your application, you must mount them in a suitable, dust-proof
enclosure with the appropriate connectors, glans, and seals. For
example, a NEMA 4 enclosure may be appropriate.
As always, observe local code requirements when applying your FLEX
Ex application.
Use in Zone Method Dusts and Fibers Hazardous Locations
FLEX Ex modules are rated for installation in North American Class I
Zone 1 & 2, Groups IIC, IIB & IIA and European Zone 1 & 2, Groups
IIC, IIB, & IIA hazardous areas. They are also rated to connect to field
devices that are located in North American Class I Zone 0, 1, & 2
Groups IIC, IIB & IIA and European Zone 0, 1, & 2, Groups IIC, IIB, &
IIA hazardous areas.
If FLEX Ex components are to be installed in a North American or
European Zone method dust or fiber location in your application, you
must mount them in a suitable, dust-proof enclosure with the
appropriate connectors, glans, and seals. For example, a North
American NEMA 4 or European IP 6x enclosure may be appropriate.
As always, observe local code requirements when applying your FLEX
Ex application.
Publication 1797-2.1 - August 2001
12 Intrinsic Safety Terminology
FLEX Ex
For Zone application, especially in Europe, normal practice calls for
the end application to obtain the dust and fiber rating due to strong
dependence on wiring and other non-equipment related
requirements. For example, FLEX Ex’s North American Class I Zone 0,
1, & 2 Groups IIC, IIB & IIA and European Zone 0, 1, & 2, Groups IIC,
IIB & IIA hazardous area rating is used as the basis for the overall
application to gain its dust and fiber certification.
Methods of Protection
The following techniques are rated by methods of protection.
Symbol for Protection Method
Zone
Division
Technique
IEC
CENELEC
NEC
CEC
Permitted Zone
Permitted Division
Oil Immersion
Ex o
EEx o
AEx o
Ex o
1 and 2
*
Pressurization
Ex p
EEx p
AEx p
Ex p
1 and 2
1 (X, Y) and 2 (Z)
Powder Filling
Ex q
EEx q
AEx q
Ex q
1 and 2
*
Flameproof
Ex d
EEx d
AEx d
Ex d
1 and 2
Increased Safety
Ex e
EEx e
AEx e
Ex e
Intrinsic Safety
Dual Fault
Single Fault
Ex ia
Ex ib
EEx ia
EEx ib
AEx ia
AEx ib
Ex ia
Ex ib
Non-Incendive
Limited Energy
Non-Sparking
Enclosed Break
Restricted Breathing
Simplified Pressurization
Ex nL
Ex nV
Ex nW
Ex nR
Ex nP
EEx nL
EEx nV
EEx nW
EEx nR
EEx nP
AEx nL
AEx nV
AEx nW
AEx nR
AEx nP
Ex nL
Ex nV
Ex nW
Ex nR
Ex nP
Encapsulation
Ex m
EEx m
Aex m
Ex m
Type X, Y, Z
Explosionproof
*
XP
1 and 2
1 and 2
*
IS
1 and 2
0, 1, and 2
1 and 2
NI
2
2
1 and 2
*
These protection methods are not recognized in the Division method. However, they may be suitable for some North American Division applications.
Temperature Category
The temperature category defines the maximum surface temperature
of the device. Ratings are given with reference to 40oC ambient unless
otherwise stated.
T1
450oC (842oF)
T3A
180oC (356oF)
T2
300oC (572oF)
T3B
165oC (329oF)
T2A
280oC (536oF)
T3C
160oC (320oF)
T2B
260oC (500oF)
T4
135oC (275oF)
T2C
230oC (446oF)
T4A
120oC (248oF)
T2D
215oC (419oF)
T5
100oC (212oF)
T3
200oC (392oF)
T6
85oC (185oF)
The additional temperature categories highlighted above are for North America only.
Publication 1797-2.1 - August 2001
FLEX Ex
Intrinsic Safety Terminology
13
The following table illustrates common FLEX Ex system specifications.
Agency Certification
ControlNet Ex
System
-
II (1) 2G SYST EEx ia/ib IIB/IIC T4
DMT 99 ATEX E 065 X
CENELEC
UL, C-UL
II 2G EEx ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
DMT 99 ATEX E 008 X
UL, C-UL 99.19699
FM 3009806
FM
CENELEC
UL, C-UL
1797-RPA
FM
CENELEC
UL, C-UL
1797-RPFM
FM
1797-TB3S
Dimensions (HxWxD)
CENELEC
1797-ACNR15/B
1797-TB3
Certificate
CENELEC
UL, C-UL
FM
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib [ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
II 2G EEx ia IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
94mm x 94mm x 91mm
(3.7in x 3.7in x 3.58in)
DMT 99 ATEX E 011 X
UL, C-UL 99.19699
FM 3009806
DMT 98 ATEX E 012 X
UL, C-UL 99.19699
FM 3009806
1797-IBN16
DMT 98 ATEX E 013 X
UL, C-UL 99.19699
FM 3009806
1797-OB4D
DMT 98 ATEX E 040 X
UL, C-UL 99.19699
FM 3009806
1797-IE8
1797-IE8NF
1797-OE8
CENELEC
UL, C-UL
FM
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
DMT 98 ATEX E 020 X
UL, C-UL 99.19699
FM 3009806
DMT 99 ATEX E 051 X
UL, C-UL 99.19699
FM 3009806
1797-IRT8
DMT 98 ATEX E 023 X
UL, C-UL 99.19699
FM 3009806
1797-IJ2
DMT 98 ATEX E 033 X
UL, C-UL 99.19699
FM 3009806
1797-PS2N/A
UL, C-UL
Class I Division 1 Groups C-D T4
Class I Division 2 Groups A-D T4
UL, C-UL 99.19699
UL, C-UL
Class I Division 1 Groups B-D T4
Class I Division 2 Groups A-D T4
Mounting - Class I Division 1
Groups B-D T4, Class I Division 2,
Groups A-D, T4, Class I Zone 1 IIC
IS Power - Class I Division 1&2
Groups A-G T4
Class I Zone 1 AEx [ib] IIC
UL, C-UL 99.19699
FM 3009806
FM
1797-PS2N/B
1797-PS2E
CENELEC
EEx de [ib] IIC T4
BVS 98.D.2055X
94mm x 94mm x 69mm
(3.7in x 3.7in x 2.7in)
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
174mm x 174mm x 128mm
(6.9in x 6.9in x 5.04in)
174mm x 174mm x 280mm
(6.9in x 6.9in x 11.0in)
Publication 1797-2.1 - August 2001
14 Intrinsic Safety Terminology
FLEX Ex
Agency Certification
CENELEC
FM
1797-BIC
FM
1797-CEC
Certificate
Dimensions (HxWxD)
II (2)G [EEx ib] IIC
Nonincendure, use for Class I,
Division 2 Groups A-D or Class I,
Zone 2 Group IIC
Provides intrinsically safe outputs to
Class I, Division 1 Groups A-D or
Class I, Zone 1 Group IIC
DMT 00 ATEX E056
Declaration of Conformity
Directive 94/9 EC
Zone 2
II 3G EEx nA IIC T4 X
FM 3010810
87mm x 94mm x 75mm
(3.4in x 3.7in x 2.95in)
Nonincendure, use for Class I,
Division 2 Groups A-D or Class I,
Zone 2 Group IIC
Declaration of Conformity
Directive 94/9 EC
Zone 2
II 3G EEx nA IIC T4 X
FM 3010810
80mm x 55mm x 69mm
(3.15in x 2.17in x 2.72in)
C
US
The following table illustrates FLEX Ex system environmental
conditions.
Operational
Temperature
Storage
Temperature
Relative
Humidity
Operating
Shock
Non-Operating
Shock
Vibration
Noxious Gas
Exposure
Environmental Conditions
-20 to 70oC
(-4 to 158oF)
-40 to 85oC
(-40 to 185oF)
5 to 95%
noncondensing
Tested 15g peak
acceleration,
11(+1)ms pulse
width
Tested 15g peak
acceleration,
11(+1)ms pulse
width
Tested 2g @
10-500Hz per
IEC 68-2-6
Tested to
severity level
G3,
ISA-S71.04-1985
About Entity Parameters
Publication 1797-2.1 - August 2001
For a complete listing of I/O entity parameters, refer to the FLEX Ex
System Certification Reference Manual, publication 1797-6.5.6.
30670-M
Hazardous Area
Zone 0
Safe Area
Node 1
75 Ohm
1W
Ci negl.
Li negl.
CNet Ex
trk trm
Uo=5.4V,
Io=201mA,
F-3>500kHz
.
.
4
5
Li < 1100uH
CNet Ex
tap trm
Ci<68pF
Li negl.
Li < 1100uH
Li < 560nH
Ci < 60pF
2
Ch0
fiber
.
Ch1
fiber
Ch0
fiber
ControlNet Ex
tap
.
.
Ch1
fiber
coax trunk cable
Cable type 1189A, 3092A, or
3092A Blue from manufacturer
Belden Wire or type RG6-CNet*
.
.
2
1797-RPFM/* or
RSD-FC-Ex2.CN 3km
Hazardous Area Zone 0
1797-RPFM/* or
RSD-FC-Ex2.CN 3km
2 1
Power Supply
Ui=9.5V,
Ii=1A,
Ci=<120nF,
Li=negligible
ControlNet Ex tap
.
1797-RPA/* or
RSD-CFA-Ex.CN
Node 2
ChB
Uo=5.4V,
Io=160mA,
F-3>500kHz
.
.
ControlNet Ex
tap
Power Supply
Ui=9.5V,
Ii=1A,
Ci=<120nF,
Li=negligible
2
1
1
Flexbus
Uo=5.4V,
Io=400mA,
Po=2.16W,
Co=65µF,
Lo=10µH
ChA
Uo=5.4V,
Io=160mA,
F-3>500kHz
coax trunk cable
1
3
Node 4 ... 48
.
ChB
Uo=5.4V,
Io=160mA,
F-3>500kHz
.
.
2
.
ControlNet Ex
tap
Power Supply
Ui=9.5V,
Ii=1A,
Ci=<120nF,
Li=negligible
1797-ACNR15/* or
RSD-GW-Ex2.CN
CNet Ex
trk trm
1
Cable Attenuation (-20to+70oC) 0.2MHz > 0.93dB/100m
0.5MHz > 0.95dB/100m
1MHz > 1.07dB/100m
2MHz > 1.16dB/100m
*RG6-CNet is defined as: Cable Impedance=75 Ohm + or -3 Ohm
Cable Capacitance<5.94nF per 100m
Cable Resistance>9.08 Ohm per 100m
5MHz > 1.39dB/100m
10MHz >1.86dB/100m
20MHz > 2.73dB/100m
50MHz > 4.33dB/100m
Near the main components of the system a plate with the system marking must be attached. If the system is installed in a cabinet the plate
must be fixed on the inside of the cabinet door.
The ambient temperature range of the ControlNet Ex system is -20 to +70 oC.
1
75 Ohm
1W
Ci negl.
Li negl.
Flexbus
Uo=5.4V,
Io=400mA,
Po=2.16W,
Co=65µF,
Lo=10µH
The Coax Trunk Cable is permitted to have a minimum length of 1,000m with only 2 connected ControlNet Ex Taps dropping to only 250m with the maximum
allowed connected ControlNet Ex Taps of 48.
ChA
Uo=5.4V,
Io=160mA,
F-3>500kHz
.
.
1797-ACNR15/* or
RSD-GW-Ex2.CN
Node 3
Protect the system against electrostatic charge. Post a sign near the main components of the system: Attention! Avoid electrostatic charge.
power density of the transmitter diode must be <5mW/mm2.
For the transmittal between the safe area and the hazardous area only optical glass-fibers are permitted. The diameter of a single glass-fiber must be >6um. The
The ControlNet Ex System is an intrinsically safe system according to EN 50039. When installing the system, the certificate of conformity and the national
installation regulations must be heeded. The components of the ControlNet Ex system and the interconnections are shown on the installation drawing (A-B Pub.
1797-6.5.6).
FLEX Ex
Communication System
15
Communication System
CENELEC ControlNet Ex System Diagram
Publication 1797-2.1 - August 2001
Publication 1797-2.1 - August 2001
Hazardous (Classified) Location
Zone 0, 1 or 2, IIC
Class I, Zones 0, 1 and 2,
Groups IIC, IIB, IIA
Class I Division 1 and 2,
Groups A, B, C, D
Class II, Division 1 and 2,
Groups E, F, G
Class III, Division 1 and 2
1786-RPFM
or
any associated apparatus where the light
emitting diode output
is <5mW/mm2
Non-Hazardous Location
CNet Ex
tap trm
ControlNet Ex
tap
2
To any approved device or
associated apparatus with Entity
Concept
parameters of Voc<9.5V and
Isc<1A
1
.
ControlNet Ex
tap
2
Ch0
.
Ch1
.
.
Ch1
4
.
coax trunk cable
5
fiber optic cable
Ch0
.
1797-RPFM
The ambient temperature range of the ControlNet Ex system is -20 to +70 oC.
CNet Ex
trk trm
.
.
1797-RPFM
Power Supply
Vmax=9.5V, Imax=1A, Ci<120nF,
Li=0
Node 1
.
Node 2
1797-RPA
2
ChA
.
1
1
.
ControlNet Ex
tap
.
2
1
1
.
2
÷
ControlNet Ex
tap
CNet Ex
trk trm
Power Supply
Vmax=9.5V,
Imax=1A,
Ci<120nF,
Li=0
30670-M
1
any IS device with entity concept
parameters Vmax, Imax Ci, Li) appropriate
for connection to associated apparatus
with entity concept parameters
listed in Table 1.
Maximum devices=8.
To any approved device or associated
apparatus with Entity Concept
parameters of Voc<9.5V and Isc<1A
ChB
.
Node 4 ... 48
1797-ACNR15
Hazardous (Classified) Location
Zone 1 or 2, IIC
Class I, Zones 1 and 2, Groups IIC, IIB, IIA
Class I Division 1 and 2, Groups A, B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III, Division 1 and 2
coax trunk cable
ChA
1
any IS device with entity concept
parameters Vmax, Imax Ci, Li) appropriate
for connection to associated apparatus
with entity concept parameters listed
in Table 1.
Maximum devices=8.
Power Supply
Vmax=9.5V,
Imax=1A,
Ci<120nF,
To any approved device or associated Li=0
apparatus with Entity Concept
parameters of Voc<9.5V and Isc<1A
ChB
.
Node 3
1797-ACNR15
3
Hazardous (Classified) Location
Zone 1 or 2, IIC
Class I, Zones 1 and 2, Groups IIC, IIB, IIA
Class I Division 1 and 2, Groups A, B, C, D
16
Communication System
FLEX Ex
UL, C-UL ControlNet Ex System Diagram
Ch1
fiber optic cable
Ch0
.
.
úö
⑧
ChB
.
÷
ControlNet
Ex tap
⑦
.
ChA
⑧
ChB
.
Node 4 ... 48
1797-ACNR15
1
.
From FM approved
1797-PS2N
⑦
Vmax=9.5V
Imax=1A
Ci<=120nF
Li=0
For connection to
other I/O modules, refer to
General FM Certification
Information in publication
1797-6.5.6 on page 31-1.
ControlNet
Ex tap
⑦
CNet Ex
trk trm
⑦
Class I, Zone 1, 2 Group IIC, IIB, IIA
Class I Division 1, Groups A, B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1
Hazardous (Classified) Location
coax trunk cable
Vmax=9.5V
Imax=1A
Ci<=120nF
Li=0
From FM approved
1797-PS2N
⑦
1
.
For connection to
other I/O modules, refer to
General FM Certification
Information in publication
1797-6.5.6 on page 31-1.
ó
coax trunk cable
Any associated apparatus where
the light emitting diode output is
<5mW/mm2 or total <1mW.
ChA
.
Node 3
1797-ACNR15
Communication System
42476
.
The ambient temperature range of the
ControlNet Ex System is -20oC to +70oC.
÷
Class I, Zone 0, 1, 2
Group IIC, IIB, IIA
Class I Division 1,
Groups A, B, C, D
Class II, Division 1,
Groups E, F, G
Class III, Division 1
Hazardous (Classified) Location
ó
CNet Ex
trk trm
⑦
11
ó
÷
ControlNet
Ex tap
⑦
Ch1
.
ç
ControlNet
Ex tap
⑦
Ch0
.
.
1797-RPFM
û
Node 1
Vmax=9.5V From FM
approved
Imax=1A
Ci<=120nF 1797-PS2N
⑦
Li=0
.
.
1797-RPFM
ç
CNet Ex
trk trm
⑦
.
ó
û
ó
û
Any associated apparatus where
the light emitting diode output is
<5mW/mm2 or total <1mW.
Any associated apparatus where
the light emitting diode output is
<5mW/mm2 or total <1mW.
1797-RPA
Node 2
Class I, Zone 1, Group IIC
Class I Division 1, Groups A, B, C, D
Hazardous (Classified) Location
ì
1786-RPFM
or
Non-Hazardous Location
FLEX Ex
17
FM ControlNet Ex System Diagram
ó
÷
Publication 1797-2.1 - August 2001
18
Communication System
FLEX Ex
Describing the ControlNet Ex System Diagram
A maximum of 48 ControlNet Ex nodes may be connected together
by 250m of coax cable and 48 taps. The distance increases to 1000m
when you use only 2 taps. See the table below for more
information.
The fiber media of the 1797-RPFM can be installed in a hazardous
location (Zone 0, 1 or 2; Class I, Zones 0, 1, and 2; Class I, Division
1 and 2; Class II, Division 1 and 2; Class III, Division 1 and 2) to
connect two 1797-RPFM modules or they can be installed through
different locations into the non-hazardous location to connect the
1797-RPFM with any approved associated apparatus.
All cables and fiber media that are not light blue must be marked as
IS using the 1797-EXMK marking kit or other locally approved IS
identification and/or segregation method.
During the installation of the ControlNet Ex system, all metallic parts
must be isolated to prevent an earth connection (high voltage
withstanding of isolating material must be > 500V ac).
System Diagram
Name
1797-RPA
Catalog Number
Catalog Name
1797-RPA
ControlNet Ex Modular
Repeater Adapter
1797-RPFM
1797-RPFM
1797-ACNR15
1797-ACNR15
CNet Ex Tap Trm
1797-TCAP
ControlNet Ex Tap
1797-TPx
CNet Ex Trk Trm
1797-XT
Coax Trunk Cable
1786-RG6
None
None
Publication 1797-2.1 - August 2001
Description
Represents one ControlNet Ex node and must be
connected to a coax trunk cable by
1797-TPx
ControlNet Ex Fiber Repeater Allows connection of a maximum of two devices per
Module, Medium Distance
1797-RPA and is powered directly by 1797-RPA
Redundant Media ControlNet Represents one ControlNet Ex node and must be
Ex Adapter
connected to a coax trunk cable by
1797-TPx -each one with two redundant output
channels that are connected to different ControlNet Ex
networks (coax cables and 1797-TPx)
ControlNet Ex Tap (Dummy) Represents one ControlNet Ex node and is a simple
Terminator
capacitor (56pF) with a coax connector
ControlNet Ex Coax Tap
Four types of connections available: S (straight t-tap),
R (right angle t-tap), YS (straight y-tap), and YR (right
angle y-tap) - a maximum of 48 taps can be connected
together by coax trunk cable
ControlNet Ex Trunk
Simple resistor (75Ω) with coax connector that must
Terminator
be on each end of the ControlNet Ex coax trunk for
termination
Quad-Shield, RG-6 75Ω Coax Maximum (functional) length between 2 1797-TPx is
Trunk Cable
3280ft (1000m) - each 1797-TPx reduces the
(functional) coax cable length by 53.4ft (16.3m)
Standard Coax Trunk Cable
Different standard cable couplers, 90o, 180o, etc.
BNC Couplers
FLEX Ex
Communication System
19
Certified Equivalent ControlNet Ex System Diagram Items
You may use these items as equivalents for the items shown on the
system diagram.
System Diagram Name
Catalog Number
Source
1797-RPA
1797-RPA1
Allen-Bradley
1797-RPFM
1797-RPFM1
Allen-Bradley
1797-ACNR15
1797-ACNR151
Allen-Bradley
1786-RG6
Allen-Bradley
Coax Trunk Cable
2
3092A
3
Belden Wire & Cable Co.
3092A with blue jacket
Belden Wire & Cable Co.
ControlNet Ex Tap
1797-TPx
Allen-Bradley
CNet Ex Trk Trm
1797-XT
Allen-Bradley
CNet Ex Tap Trm
1797-TCAP
Allen-Bradley
1
2
3
For complete information on interpreting the system drawings, refer to the FLEX Ex System Certification
Reference Manual, publication 1797-6.5.6.
In addition to these cable types, the following specification can be followed to allow additional types:
Cable Impedance = 75Ω + 3Ω
Cable Capacitance = <5.94nF per 100m
Cable Resistance = >9.08Ω per 100m
Cable Attenuation
0.2MHz > 0.93dB/100m5MHz > 1.39dB/100m
0.5MHz > 0.95dB/100m10MHz > 1.86dB/100m
(-20 to +70oC)
1MHz > 1.07dB/100m20MHz > 2.73dB/100m
2MHz > 1.16dB/100m50MHz > 4.33dB/100m
Belden Wire & Cable 1189A may be used, but with functional loss of communication distance and/or
nodes.
Publication 1797-2.1 - August 2001
20
Dual Media ControlNet Ex 1.5 Adapter Cat. No. 1797-ACNR15
FLEX Ex
Product Features
Dual Media ControlNet Ex 1.5 Adapter Cat. No. 1797-ACNR15
• Provides interface from the local backplane
I/O bus to the network fieldbus
• Provides power to the backplane to run bus
interface circuitry aboard I/O modules
1797-ACNR15
• Capable of accepting dual ControlNet Ex
cable media
PWR
40054
Customer Connections
+V
Power
Supply
-V
Channel A
Bus
Network
Flexbus
Dual
Port
RAM
Channel B
uC
uC
40055
1797-ACNR15 Specifications
1797-ACNR15 Specifications
I/O Capacity
8 modules
Power Consumption
8.5W
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I, Division 1 Groups A-G T4
Power Dissipation
8.5W
Thermal Dissipation
29 BTU/hr
Conductor Wire Size
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
Approximately 200g
IS Media Type
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 Groups A-D T4
Weight
Communication Rate
5m bit/s
Environmental Conditions
ControlNet Ex BNC (ChA and Oscillation powered by:
ChB)
Uo < 5.4V dc
Io < 160mA
ac coupled with high-pass filter f-3 > 500kHz
Indicators
Output (Intrinsically Safe)
(16 position male/female
flexbus
connector)
Isolation Path
Flexbus to Power Supply
Flexbus to ControlNet
ControlNet Ex Node to Other
Node
ControlNet Ex to Power
Supply
Power Supply
(+V, -V Intrinsically Safe)
Comm A
Comm B
Module Status
Power
Uo
Io
Po
Lo
Co
red/grn
red/grn
red/grn
grn
< 5.8V dc
< 400mA
< 2.16W
< 10µH
< 65µF
Galvanic to DIN EN50020
Galvanic functional
Galvanic functional
Operational Temperature
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Tested 15g peak acceleration, 11 (±1)ms pulse width
Operating
Non-Operating
Vibration
Tested 15g peak acceleration, 11 (±1)ms pulse width
Tested 2g @ 10-500Hz per IEC 68-2-6
Agency Certification
CENELEC
II 2G EEx ib IIB/IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib IIC T4
FM
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
Certificates
CENELEC
DMT 98 ATEX E008 X
UL, C-UL
UL Certificate Number 99.19699
Galvanic to DIN EN50020
Ui
Ii
Pi
Li
Ci
< 9.5V dc
< 1A
< 9.5W
= Negligible
< 120nF
Publication 1797-2.1 - August 2001
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
FLEX Ex
ControlNet Ex Coax Drop Repeater Module Cat. No. 1797-RPA
Product Features
ControlNet Ex Coax Drop Repeater Module Cat. No. 1797-RPA
• Functions as part of the fiber repeater hub
within the hazardous area to extend the
length of the ControlNet Ex segments to
interlink systems all operating within the area
1797-RPA
COMM
MODULE
STATUS STATUS
21
REPEATER
ADAPTER
• Functions as the intelligent starter block for a
multiport repeater
PWR
1
2
3
4
+V
-V
+V
-V
• Configured with at least one media adapter
40056
Customer Connections
power
supply
+V
-V
network
bus
channel
fiber hub bus
uC
uC
41309
1797-RPA Specifications
1797-RPA Specifications
I/O Capacity
2 fiber modules
Thermal Dissipation
29 BTU/hr
IS Media Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I, Division 1 Groups A-G T4
Conductors
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 Groups A-D T4
Wire Size
Dimensions
94mm x 94mm x 91mm (3.7in x 3.7in x 3.58in)
Weight
Approximately 200g
Environmental Conditions
Communication Rate
5m bit/s
Operational Temperature
ControlNet Ex BNC
Oscillation powered by:
< 5.4V dc
Uo
< 201mA
Io
ac coupled with high-pass filter f > 500kHz
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Indicators
Output (Intrinsically Safe)
(30 pin male TTL bus
connector)
Isolation Path
Bus to Power Supply
Adapter to Adapter
ControlNet Ex Node to Other
Nodes
ControlNet to Power Supply
Power Supply
(-V, +V Intrinsically Safe)
Comm green/red
Module green/red
Power green
Manufacturer specific bus
Uo < 5.4V
Io < 201mA
Po < 1.09W
Lo < 0.45mH
Co < 71µF
Galvanic to DIN EN50020
Galvanic functional
Galvanic functional
Galvanic to DIN EN50020
Ui < 9.5V dc
Ii < 1A
Pi < 9.5W
Li = negligible
Ci < 120nF
Power Consumption
8.5W
Power Dissipation
8.5W
Shock
-20 to 70oC (-4 to 158oF)
Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
Non-Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
Vibration
Tested 2g @ 10-500Hz per IEC 68-2-6
Agency Certification
CENELEC
II (1) 2G EEx ia/ib IIB/IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib IIC T4
FM
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
Certificates
CENELEC
DMT 98 ATEX E011 X
UL, C-UL
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Publication 1797-2.1 - August 2001
22
ControlNet Ex 3km Fiber Media Port Adapter Cat. No. 1797-RPFM
FLEX Ex
Product Features
ControlNet Ex 3km Fiber Media Port Adapter Cat. No. 1797-RPFM
• Functions as part of the fiber repeater hub
within the hazardous area to extend the
length of the ControlNet Ex segments to
interlink systems all operating within the area
1797-RPFM
• Functions as a non-intelligent fiber to
backplane conversion device
FIBER MODULE
MEDIUM RANGE
Chan 1
Recv
• Converts glass fiber infrared LED media
signals to backplane signals for use by the
coax drop repeater module (cat. no.
1797-RPA)
Chan 2
Xmit
Recv
Xmit
40057
Customer Connections
receiver
channel
transmitter
bus
fiber hub bus
receiver
proc
channel
transmitter
41310
1797-RPFM Specifications
1797-RPFM Specifications
IS Media Type
IS Module Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 & 2 Groups A-G T4
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 & 2 Groups A-D T4
Communication Rate
5m bit/s
Approximate Fiber Media
Length
3km
Fiber Type
62.5/125 mm
Power Consumption
Included in 1797-RPA
Power Dissipation
Included in 1797-RPA
Thermal Dissipation
Included in 1797-RPA
Weight
Approximately 100g
Dimensions
94mm x 94mm x 91mm (3.7in x 3.7in x 3.58in)
Environmental Conditions
Operational Temperature
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
5 to 95% noncondensing
Fiber Termination Type
ST (plastic or ceramic)
Relative Humidity
Fiber Operating Wavelength
1300 nm
Shock
Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
Non-Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
Optical Power Budget
13.3 dB
Fiber Optic Transmitter
Ch1 and Ch2
Optical peak output power
Poptical < 1mW
Indicators
Channel 1 status - green
Channel 2 status - green
CENELEC
II (1) 2G EEx ia/ib IIB/IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib [ia] IIC T4
Ui < 5.4V
Ii < 201mA
Pi < 1.1W
Li < 15µH
Ci < 41µF
FM
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib IIC T4
Input (Intrinsically Safe)
(30 pin female TTL bus
connector)
Output (Intrinsically Safe)
(30 pin male TTL bus
connector)
Isolation Path
Bus to ControlNet
Uo < 5.4V
Io < 201mA
Po < 1.1W
Lo < 0.45mH
Co < 71µF
Galvanic to DIN EN50020
Publication 1797-2.1 - August 2001
Vibration
Tested 2g @ 10-500Hz per IEC 68-2-6
Agency Certification
Certificates
CENELEC
DMT 98 ATEX E011 X
UL, C-UL
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
FLEX Ex
ControlNet Ex Taps and Terminators Cat. Nos. 1797-TPS, -TPR, -TPYS, -TPYR, -XT and -TCAP
23
ControlNet Ex Taps and Terminators Cat. Nos. 1797-TPS, -TPR, -TPYS, -TPYR, -XT and -TCAP
ControlNet Ex Straight T-Tap
Cat. No. 1797-TPS
ControlNet Ex Right-Angle T-Tap
Cat. No. 1797-TPR
40058
ControlNet Ex Straight Y-Tap
Cat. No. 1797-TPYS
40059
ControlNet Ex Right-Angle Y-Tap
Cat. No. 1797-TPYR
40060
ControlNet Ex 75Ω Terminator
Cat. No. 1797-XT
40061
ControlNet Tap Terminator
Cat. No. 1797-TCAP
40875
40874
Publication 1797-2.1 - August 2001
24
3-Tier Screw Clamp Terminal Base Unit Cat. No. 1797-TB3
3-Tier Screw Clamp Terminal Base Unit Cat. No. 1797-TB3
FLEX Ex
Specifications - 1797-TB3
Flexbus Connection
Ui
Intrinsically Safe
Ii
Ci
Li
<10V dc
<400mA
<1nF
Negligible
Isolation Voltage
Channel-to-channel isolation determined by inserted
module
Weight
200g (approximately)
Dimensions (with module
installed in base)Inches
3.7H x 3.7W x 2.7D
(Millimeters) (94H x 94W x 69D)
Environmental Conditions
40062
Operational Temperature
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Tested 15g peak acceleration, 11 (±1)ms pulse width
Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
ATTENTION
!
ATTENTION
!
Make certain that the hook on the terminal base
you are installing is properly hooked into the
adjacent terminal base/adapter. Failure to lock
the hook into the adjacent base/adapter can
result in loss of communication on the
backplane.
Do not force the terminal base into the adjacent
base/adapter. Forcing the units together can
bend or break the hook and allow the units to
separate and break communication over the
backplane.
Non-Operating
Vibration
Conductors
Tested 2g @ 10-500Hz per IEC 68-2-6
Wire Size
12 gauge (4mm2) stranded maximum
1.2mm (3/64in) insulation maximum
Agency Certification
CENELEC
II 2G EEx ia IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
FM
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
Certificates
CENELEC
DMT 98 ATEX E012 U
UL, C-UL
UL Certificate Number 99.19699
C
The 1797-TB3 terminal base unit is intended for
users preferring the screw-type wire retention
method.
You can use the 1797-TB3 terminal base unit with
any module on the FLEX Ex system. Specific
terminal function is governed by the I/O module
itself. Check the installation instructions for each
module to determine the specific terminal
functions.
Specifications - 1797-TB3
Number of Terminals
1 row of 16, 2 rows of 18
Terminal Screw Torque
7-9 inch-pounds
Terminals Assignments1
+34, -35, +50, -51, and 96
pinifemale I/O connector
pinsi30-32, 62-64, 94-96i
Only for intrinsically safe circuits
Ui
<10V dc
<2.5A
Ii
< 1nF
Ci
Negligible
Li
Must not be used for any connection
<30V dc
Ui
<100mA
Ii
<1nF
Ci
Negligible
Li
36, 49
All Other Terminals
FM
1
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Termination connections are unique with each I/O module. Refer to the
appropriate I/O module’s installation instructions.
The 1797-TB3 terminal base also has connections
for cold junction compensation and terminals
designated for shield termination to chassis
ground.
The terminal base is equipped with a
factory-installed tab cover for the backplane bus
connection. The tab cover may be removed only
when the terminal base unit is connected to other
terminal base units or 1794-CE1 or -CE3 extender
cables.
Wiring Connections for Terminal Base 1797-TB3
0
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15
A
16 17
18 19 20
21 22 23
24 25 26
27 28 29 30 31 32 33
B
34 35
36 37 38
39 40 41
42 43 44
45 46 47 48 49 50 51
C
+V -V
+V -V
No connections allowed to terminals 36 and 49 41252
Publication 1797-2.1 - August 2001
FLEX Ex
3-Tier Spring Clamp Terminal Base Unit Cat. No. 1797-TB3S
3-Tier Spring Clamp Terminal Base Unit Cat. No. 1797-TB3S
Only for intrinsically safe circuits
Ui
<10V dc
<2.5A
Ii
<1nF
Ci
Negligible
Li
Must not be used for any connection
<30V dc
Ui
<100mA
Ii
<1nF
Ci
Negligible
Li
Terminals Assignments1
+34, -35, +50, -51, and 96
pin female I/O connector
pinsi30-32, 62-64, 94-96i
36, 49
All Other Terminals
ATTENTION
!
ATTENTION
!
Do not force the terminal base into the adjacent
base/adapter. Forcing the units together can
bend or break the hook and allow the units to
separate and break communication over the
backplane.
Ui
Ii
Ci
Li
Isolation Voltage
Channel-to-channel isolation determined by inserted
module
Weight
200g (approximately)
Dimensions (with module
installed in base)Inches
3.7H x 3.7W x 2.7D
(Millimeters) (94H x 94W x 69D)
Environmental Conditions
Operational Temperature
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Tested 15g peak acceleration, 11 (±1)ms pulse width
Operating
Tested 15g peak acceleration, 11 (±1)ms pulse width
Non-Operating
Vibration
Conductors
Tested 2g @ 10-500Hz per IEC 68-2-6
Wire Size
12 gauge (4mm2) stranded maximum
1.2mm (3/64in) insulation maximum
Agency Certification
The 1797-TB3S terminal base unit is intended for
users preferring the spring-type wire retention
method.
You can use the 1797-TB3S terminal base unit with
any module on the FLEX Ex system. Specific
terminal function is governed by the I/O module
itself. Check the installation instructions for each
module to determine the specific terminal
functions.
The 1797-TB3S terminal base has 36 wiring
connections to/from a plug-in module. The use of
each terminal depends on the module mounted in
this base. It also has connections for cold junction
compensation and terminals designated for shield
termination to chassis ground.
Specifications - 1797-TB3S
Number of Terminals
1 row of 16, 2 rows of 18
Number of Terminals
1 row of 16, 2 rows of 18
Terminal Type
<10V dc
<400mA
<1nF
Negligible
Flexbus Connection
Intrinsically Safe
40063
Make certain that the hook on the terminal base
you are installing is properly hooked into the
adjacent terminal base/adapter. Failure to lock
the hook into the adjacent base/adapter can
result in loss of communication on the
backplane.
25
Spring-clamp - To open, insert bladed screwdriver
(0.100 - 0.120in/2.54-3.05mm) and lift up.
CENELEC
II 2G EEx ia IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
FM
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
Certificates
CENELEC
DMT 98 ATEX E012 U
UL, C-UL
UL Certificate Number 99.19699
FM
FM Certificate Number 3009806
C
1
US
Class I Division 1 Hazardous
Termination connections are unique with each I/O module. Refer to the
appropriate I/O module’s installation instructions.
The terminal base is equipped with a factory
installed tab cover for the backplane bus
connection. The tab cover may be removed only
when the terminal base unit is connected to other
terminal base units or 1794-CE1 or -CE3 extender
cables.
0
1
16
17
34
2
18
35
36
3
4
5
6
7
8
9
10
11
12
13
14
19
20
21
22
23
24
25
26
27
28
29
30
37
38
39
40
41
42
43
44
45
46
47
48
15
31
49
32
33
50
51
Label placed at top of wiring area
Row A
Row B
Row C
Row A
Row B
Row C
+V-V
+V -V
41254
No connections allowed to terminals 36 and 49
Publication 1797-2.1 - August 2001
26
16 pt Non-Isolated NAMUR Input Module Cat. No. 1797-IBN16
FLEX Ex
16 pt Non-Isolated NAMUR Input Module Cat. No. 1797-IBN16
Ex
1797-IBN16
PWR
40064
Product Features
• 16 single-ended input channels referenced to
a single common
• Maximum no load voltage/short-circuit
current:
U/V = 7.5V dc/
I = 7.5mA
• Yellow LED to indicate input state,
input ON = LED ON
• Fault detection, fault bits in data table and
LED (per channel) blinking red (1Hz)
• DIN 19234, NAMUR compatible
• Switching points/hysteresis:
I = 1.2mA to 2.1mA/0.2mA
• Input pulse width on/off: >500µs/>500µs
• Lead breakage threshold: I<0.35mA
• Lead breakage defeat on four-channel group
basis via module DIP switch selection
• Fault detection can be disabled via data table
• Input frequency up to 1000Hz
• Programmable digital input filtering 1 to
33ms (OFF-ON and ON-OFF)
• All channels updated to flexbus<500µs
• Module field-side power consumption: 2.8W
Customer Connections
lead break defeat
+V
-V
Flexbus
NAMUR Prox
Bus
+
µC
Publication 1797-2.1 - August 2001
Power
Supply
~1.5K
~9K
-
FLEX Ex
16 pt Non-Isolated NAMUR Input Module Cat. No. 1797-IBN16
27
Terminal Base Assignment
0
1
2
3
4
+
-
+
-
+
5
6
7
8
9
10
11
12
13
14
15
+
-
+
-
Row A
Ch 0
16
Ch 1
-
+
Ch 2
-
+
Ch 3
-
+
Ch 4
-
Ch 5
Ch 6
Ch 7
17
18
19
20
21
22
23
24
25
26
27
28
29
30
+
-
+
-
+
-
+
-
+
-
+
-
+
-
31
32
33
Row B
Ch 8
34
Ch 9
35
36
Ch 10
37
38
Ch 11
39
40
Ch 12
41
42
Ch 13
43
44
+
Ch 14
45
46
-
Ch 15
47
48
49
50
51
Row C
41504
+V
-V
+V -V
No connection allowed to terminals 36 and 49
Specifications - 1797-IBN16
Module Location
Cat. No. 1797-TB3 or -TB3S Terminal Base Unit
Number of Inputs
16 (1 group of 16), non-isolated, sinking
Conductor Wire Size
IS Input Type
EEx ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1
Group A-G T4
12 gauge (4mm2) stranded maximum
3/64in (1.2mm )insulation maximum
Dimensions
IS Module Type
EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 & 2
Group A-D T4
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
Weight
200g (approximate)
Input Type
DIN19234, NAMUR compatible
Keyswitch Position
6
ON-State Current
2.1mA
OFF-State Current
1.2mA
Hysteresis
0.2mA
Input Frequency
1000Hz maximum
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Operating
Nonoperating
Vibration
Input Pulse Width
>500µs on or off
Maximum Load Voltage
U/V = 7.5V dc
Short Circuit Current
I = 7.5mA
Short Circuit Threshold
I > 6mA
Lead Breakage Threshold
I < 0.35mA
Input Delay Times
OFF to ON
ON to OFF
1ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms
1ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms
1ms default - selectable thru output image table (see
Setting Input Filter Times)
Indicators (field side
indication, customer
device driven)
16 yellow status indicators
16 red fault indicators
1 green module power indicator
Output (intrinsically safe)
(16 pin male and female
flexbus connector)
Ui < 5.8V dc
Ii < 400mA
Li = Negligible
Ci = Negligible
Isolation Path
Input to power supply
Input to flexbus
Input to input
Power supply to flexbus
Isolation Type
Galvanic to DIN EN50020
Galvanic to DIN EN50020
None
Galvanic to DIN EN50020
Power Supply
(+V, -V intrinsically safe)
Ui < 9.5V dc
Ii < 1A
Li = Negligible
Ci = Negligible
Module Field-Side Power
Consumption
2.8W
Power Dissipation
2.8W
Thermal Dissipation
Maximum 9.6 BTU/hr
-20 to +70oC (-4 to +158oF)
-40 to +85oC (-40 to +185oF)
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
Agency Certification
CENELEC
II (1) 2G EEx ia/ib IIB/IIC T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
FM
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
Certificates
CENELEC
DMT 98 ATEX E013 X
UL, C-UL
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Publication 1797-2.1 - August 2001
28
24V dc 4 pt Non-Isolated Source Output Module Cat. No. 1797-OB4D
FLEX Ex
24V dc 4 pt Non-Isolated Source Output Module Cat. No. 1797-OB4D
Ex
1797-OB4D
PWR
40067
Product Features
• 4 output channels referenced to a single
supply
• Functional data: U = 12V at I = 45mA
• Yellow LED to indicate output state,
output ON = LED ON
• Fault indication, signal to the backplane and
LED (per channel) blinking red for fault
• Output wire-off detection
• Output wire-off detection on per channel
basis via module data bit
• Electronically short circuit protected, fault
reported to controller
• All channels updated from the backplane
every 2ms
• Output fault state programmable
Customer Connections
+V power
supply
-V
+
bus
flexbus
uC
audible
alarm
valve
solenoid
40069
Terminal Base Assignment
0
1
+
-
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Row A
+
ch0
16
17
-
+
ch1
18
19
20
21
-
+
ch2
22
23
24
25
-
ch3
26
27
28
29
30
31
32
33
Row B
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
Row C
40068
+V
-V
+V -V
No connections allowed to terminals 2, 3, 6, 7, 10, 11, 14, 15, 17 to 32, 36, 37, 38, 39, 46, 47, 48, 49
Publication 1797-2.1 - August 2001
FLEX Ex
24V dc 4 pt Non-Isolated Source Output Module Cat. No. 1797-OB4D
Specifications - 1797-OB4D
Agency Certification
Number of Outputs
4, non-isolated, sourcing
CENELEC
II (1) 2G EEx ia/ib IIB/IIC T4
IS Output Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 & 2 Groups A-G T4
UL, C-UL
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
FM
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 & 2 Groups A-D T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
V-I Characteristics
Refer to “Output Voltage/Current Capability” on
page 29
Load Range
30-5000 Ω
Fault Detection
Fault bits in data table and LED (per channel) blinking
red (1 Hz)
Electronic Protection
Lead break, overload, short circuit
Maximum Output
Delay Times
OFF to ON
ON to OFF
<1.2ms
<1.2ms
Indicators
4 yellow status indicators
4 red fault indicators
1 green module power indicator
Output (Intrinsically Safe)
(16 pin Male and Female
Flexbus Connector)
Ui < 5.8V dc
Ii < 400mA
Li = Negligible
Ci < 1.35µF
Isolation Path
Output to Power Supply
Output to Flexbus
Power Supply to Flexbus
Output to Output
Isolation type
Galvanic to DIN EN 50020
Galvanic to DIN EN 50020
Galvanic to DIN EN 50020
None
Power Supply
(+V, -V Intrinsically Safe)
Ui < 9.5V dc
Ii < 1A
Li = Negligible
Ci = Negligible
Module Field-Side
Power Consumption
Power Dissipation
7.5W
Thermal Dissipation
17.07 BTU/hr
Module Location
Cat. No. 1797-TB3 or -TB3S Terminal Base Unit
Conductors Wire Size
12 gauge (4mm2) stranded maximum
1.2mm (3/64in) insulation maximum
Dimensions
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
Weight
200g (approximate)
Keyswitch Position
7
29
Certificates
CENELEC
DMT 98 ATEX E040 X
UL, C-UL
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Output Voltage/Current Capability
Voltage
30
25
20
15
10
5
0
0
5
10
15
20
25 30
mA
35
40
45
50
41313
5W
Environmental Conditions
Operational Temperature
-20 to +70oC (-4 to +158oF)
Storage Temperature
-40 to +85oC (-40 to +185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Tested to 15g peak acceleration, 11(+1)ms pulse width
Operating
Nonoperating
Vibration
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
Publication 1797-2.1 - August 2001
30
8 pt 16 bit Single-Ended Non-Isolated Input Module Cat. No. 1797-IE8
FLEX Ex
8 pt 16 bit Single-Ended Non-Isolated Input Module Cat. No. 1797-IE8
Ex
1797-IE8
8 CHANNEL ANALOG INPUT
3
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
PWR
40070
Product Features
• Eight single-ended input channels referenced
to a single common
• 3-wire input for 2 and 3-wire transmitters
• Functional data: U = 15V at I = 22mA, normal
Input current = 4 to 20mA, full-current range
0 to 22mA to allow for over and underrange
indication
• Wire-off detection, signal to the backplane
and LED (per channel) blinking red for fault
• Wire-off detection on per channel basis via
module data bits
• Input filter cutoff programmable
• Response time: 4ms to 99% of final value
• All channels updated to the backplane every
< 4ms
• Resolution: 16 bits
• Accuracy: 0.1%
• Temperature drift: 50 ppm/°C
Customer Connections
+V
-V
+
flexbus
286Ω
21V
Bus
4-20mA
Xmit
I
uC
P
4-20mA
Xmit
I
Isolated
Power
4-20mA
Xmit
P
sig
22Ω
I
P
40072
Publication 1797-2.1 - August 2001
FLEX Ex
8 pt 16 bit Single-Ended Non-Isolated Input Module Cat. No. 1797-IE8
31
Terminal Base Assignment
0
1
2
+
sig
-
3
4
5
6
+
sig
-
7
8
9
10
11
12
13
14
+
sig
15
Row A
Ch 0
16
+ sig
Ch 1
17
18
19
+
sig
-
20
-
Ch 2
21
22
23
+
sig
-
24
25
26
-
Ch 3
27
28
29
30
31
+
sig
32
33
Row B
Ch 4
34
+ sig
Ch 5
35
36
37
38
39
-
Ch 77
Ch 6
40
41
42
43
-
44
45
46
47
48
49
50
51
Row C
40071
+V -V
+V -V
No connection
allowed
No connection
allowed
Specifications - 1797-IE8
Number of Inputs
8 single-ended, non-isolated
IS Input Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 Groups A-G T4
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 Groups A-D T4
Resolution
16 bits
Transfer Characteristics
Accuracy
0.1% of output signal range
at 20°C (68°F)
Temperature Drift
0.005%/C of output signal range
Functional Data Range
>15V @22mA
>21.5V @ 0mA
Data Format
Configurable
Step Response to
4ms
99% of FS
Module from Adapter
50/1450µs
Best/Worst Update Time
Indicators
8 red fault indicators
1 green power
Output (Intrinsically Safe) Ui < 5.8V dc
(16 position male/female Ii < 400mA
flexbus connector)
Li = Negligible
Ci < 1.35µF
Isolation Path
Isolation Type
Input to Power Supply
Galvanic to DIN EN50020
Input to Flexbus
Galvanic to DIN EN50020
Input to Input
None
Power Supply to
Galvanic to DIN EN50020
Flexbus
Power Supply
Ui < 9.5V dc
(+V, -V intrinsically safe)
Ii < 1A
Li = Negligible
Ci = Negligible
Module Field-side Power 7.5W
Consumption
Power Dissipation
5.2W
Thermal Dissipation
17.75 BTU/hr
Module Location
Cat. No. 1797-TB3 or -TB3S
Conductor Wire Size
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
Dimensions
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
200g (approximately)
3
Weight
Keyswitch Position
Environmental Conditions
Operational Temperature -20 to +70oC (-4 to +158oF)
Storage Temperature
-40 to +85oC (-40 to +185oF)
Relative Humidity
Shock Operating
Nonoperating
Vibration
Agency Certification
CENELEC
UL, C-UL
FM
Certificates
CENELEC
UL, C-UL
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
DMT 98 ATEX E020 X
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Publication 1797-2.1 - August 2001
32
8 pt 16 bit Single-Ended Non-Isolated Input Module with Noise Filter Cat. No. 1797-IE8NF
FLEX Ex
8 pt 16 bit Single-Ended Non-Isolated Input Module with Noise Filter Cat. No. 1797-IE8NF
Ex
1797-IE8NF
8 CHANNEL ANALOG INPUT, FILTERED
3
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
PWR
42849
Product Features
• Eight single-ended input channels referenced
to a single common
• 3-wire input for 2 and 3-wire transmitters
• Functional data: U = 15V at I = 22mA, normal
Input current = 4 to 20mA, full-current range
0 to 22mA to allow for over and underrange
indication
• Wire-off detection, signal to the backplane
and LED (per channel) blinking red for fault
• Wire-off detection on per channel basis via
module data bits
• Input filter cutoff programmable
• Response time: 500ms to 99% of final value
• All channels updated to the backplane every
< 4ms
• Resolution: 16 bits
• Accuracy: 0.1%
• Temperature drift: 50 ppm/°C
Customer Connections
+V
-V
+
flexbus
286Ω
21V
Bus
4-20mA
Xmit
I
uC
P
4-20mA
Xmit
I
Isolated
Power
4-20mA
Xmit
P
sig
22Ω
I
P
40072
Publication 1797-2.1 - August 2001
FLEX Ex
8 pt 16 bit Single-Ended Non-Isolated Input Module with Noise Filter Cat. No. 1797-IE8NF
33
Terminal Base Assignment
0
1
2
+
sig
-
3
4
5
6
+
sig
-
7
8
9
10
11
12
13
14
+
sig
15
Row A
Ch 0
16
+ sig
Ch 1
17
18
19
+
sig
-
20
-
Ch 2
21
22
23
+
sig
-
24
25
26
-
Ch 3
27
28
29
30
31
+
sig
32
33
Row B
Ch 4
34
+ sig
Ch 5
35
36
37
38
39
-
Ch 77
Ch 6
40
41
42
43
-
44
45
46
47
48
49
50
51
Row C
40071
+V -V
+V -V
No connection
allowed
No connection
allowed
Specifications - 1797-IE8NF
Number of Inputs
8 single-ended, non-isolated
IS Input Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 & 2 Groups A-G T4
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 & 2 Groups A-D T4
Resolution
16 bits
Transfer Characteristics
Accuracy
0.1% of output signal range
at 20°C (68°F)
Temperature Drift
0.005%/C of output signal range
Functional Data Range
>15V @22mA
>21.5V @ 0mA
Data Format
Configurable
Step Response to
500ms
99% of FS
Module from Adapter
50/1450µs
Best/Worst Update Time
Indicators
8 red fault indicators
1 green power
Output (Intrinsically Safe) Ui < 5.8V dc
(16 pin male and female Ii < 400mA
flexbus connector)
Li = Negligible
Ci < 1.35µF
Isolation Path
Isolation Type
Input to Power Supply
Galvanic to DIN EN50020
Input to Flexbus
Galvanic to DIN EN50020
Input to Input
None
Power Supply to
Galvanic to DIN EN50020
Flexbus
Power Supply
Ui < 9.5V dc
(+V, -V intrinsically safe)
Ii < 1A
Li = Negligible
Ci = Negligible
Module Field-side Power 7.5W
Consumption
Power Dissipation
5.2W
Thermal Dissipation
17.75 BTU/hr
Module Location
Cat. No. 1797-TB3 or -TB3S
Conductor Wire Size
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
Specification 1797-IE8NF (Continued)
Dimensions
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
Weight
200g (approximately)
Keyswitch Position
3
Environmental Conditions
Operational Temperature -20 to +70oC (-4 to +158oF)
Storage Temperature
Relative Humidity
Shock
Operating
Nonoperating
Vibration
Agency Certification
CENELEC
UL, C-UL
FM
Certificates
CENELEC
-40 to +85oC (-40 to +185oF)
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
DMT 98 ATEX E020 X
UL, C-UL
UL Certificate Number 99.19699
FM
FM Certificate Number 3009806
C
US
Class I Division 1 Hazardous
Publication 1797-2.1 - August 2001
34
8 pt 13 bit Single-Ended Non-Isolated Output Module Cat. No. 1797-OE8
FLEX Ex
8 pt 13 bit Single-Ended Non-Isolated Output Module Cat. No. 1797-OE8
Ex
1797-OE8
PWR
40073
Product Features
• Eight dual-ended output channels referenced
over sense resistors to a single common
• Functional data:
U = 11V at I = 22mA, normal output
current = 4-20mA, full current
range = 0-22mA to allow for over and
overrange indication
• Load 0-500Ω
• Output wire-off detection, LED (per channel)
blinking red for fault, threshold < 2mA
• Output wire-off detection on per channel
basis via module data bits
• Rise time: 4ms to 99% of final value
• All channels updated to the backplane every
< 4ms
• Resolution: 13 bits
• Accuracy: 0.1%
• Temperature drift: 100ppm/°C
• One power supply loop for one module
• Output fault state programmable
Customer Connections
+V
power
supply
-V
flexbus
+
Bus
4-20mA
actuator
4-20mA
valve
I
F
uC
-
41441
Publication 1797-2.1 - August 2001
FLEX Ex
8 pt 13 bit Single-Ended Non-Isolated Output Module Cat. No. 1797-OE8
35
Terminal Base Assignment
0
1
2
3
4
5
+
-
6
7
8
9
10
11
12
13
14
15
Row A
+
-
ch0
16
17
+
ch1
18
19
20
21
-
+
ch2
22
23
24
25
-
ch3
26
27
28
29
30
31
32
33
Row B
+
-
+
ch4
-
+
ch5
34
35
+V
-V
36
37
38
-
+
ch7
ch6
39
40
41
42
-
43
44
45
46
47
48
49
50
51
Row C
41440
+V
No connections allowed to terminals 2, 3, 6, 7, 10, 11, 14, 15, 19, 20, 23,
24, 27, 28, 31, 32, 36, 37, 38, 39, 46, 47, 48, 49
Specifications - 1797-OE8
Number of Outputs
8 single-ended, non-isolated
IS Output Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 Groups A-G T4
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 Groups A-D T4
Resolution
13 bit
Transfer Characteristics
0.1% of output signal range
Accuracy at 20oC (68oF)
0.010%/C of output signal range
Temperature Drift
Load Range
Current
0-22mA
Voltage Available at 22mA >11V
Load
0-500Ω @ 22mA
Data Format
Configurable
Step Response to 99% of 4ms
FS
Indicators
8 red fault indicators
1 green power
Output (Intrinsically Safe) Ui < 5.8V dc
(16 pin male and female Ii < 400mA
flexbus connector)
Li = Negligible
Ci = < 1.35µF
Isolation Path
Isolation Type
Output to Power Supply Galvanic to DIN EN50020
Output to Flexbus
Galvanic to DIN EN50020
Output to Output
None
Power Supply to Flexbus Galvanic to DIN EN50020
Power Supply
Ui < 9.5V dc
(+V, -V Intrinsically Safe) Ii < 1A
Li = Negligible
Ci = Negligible
Module Field-Side Power 6.3W
Consumption
Power Dissipation
5.4W
Thermal Dissipation
18.4 BTU/hr
Module Location
Cat. No. 1797-TB3 or -TB3S Terminal Base Unit
Conductors Wire Size
12 gauge (4mm2) stranded maximum
1.2mm (3/64in) insulation maximum
Dimensions
46 x 94 x 75mm (1.8 x 3.7 x 2.95in)
Weight
200g (approximately)
Keyswitch Position
4
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Operating
Non-Operating
Vibration
Agency Certification
CENELEC
UL, C-UL
-V
-20 to +70oC (-4 to +158oF)
-40 to +85oC (-40 to +185oF)
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
FM
Certificates
CENELEC
DMT 98 ATEX E042 U
UL, C-UL
UL Certificate Number 99.19699
C
FM
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Output Voltage/Current Capability
Voltage
16
14
12
10
8
6
4
2
0
0
5
10
mA
15
20
25
43002
Publication 1797-2.1 - August 2001
36
8 pt 16 bit Non-Isolated RTD Thermocouple/mV Input Module Cat. No. 1797-IRT8
FLEX Ex
8 pt 16 bit Non-Isolated RTD Thermocouple/mV Input Module Cat. No. 1797-IRT8
Ex
1797-IRT8
PWR
40076
Product Features
• Input channels referenced to a single
common
• Resolution: 16 bits
• RTD mode
– 2-, 3- and 4-wire connection
– sensor lead breakage detection all 4 leads
– sensor short circuit detection all 4 leads
– measuring resistance 0 to 500Ω
– accuracy: 0.1% of span @ 20oC,
filter cutoff < 1Hz
• Thermocouple mode
– types B, E, J, K, TXK/XK (L), N, R, S, T
– cold junction compensation (CJC)
– external reference junction
(programmable)
– sensor breakage detection
– accuracy: 0.1% of span, filter cutoff < 1 Hz
– accuracy of CJC: +1°C/K
• mV mode
– input voltage -40 to 100 mV differential
sensing
– sensor breakage detection
– accuracy: 0.1% of span @ 20oC,
filter cutoff < 1Hz
Customer Connections
+V
power
supply
-V
+
flexbus
Bus
2W RTD
L
uC
3W RTD
4W RTD
H
thermocouple
+
mV
-
+
CJC
-
CJC
41658
Publication 1797-2.1 - August 2001
FLEX Ex
8 pt 16 bit Non-Isolated RTD Thermocouple/mV Input Module Cat. No. 1797-IRT8
37
Terminal Base Assignment
0
1
2
+
H
L
3
4
5
-
+
H
6
7
8
9
+
H
10
11
12
13
14
15
Row A
Ch 0
16
L
-
Ch 1
17
18
19
20
21
+
H
L
-
+
22
L
-
+
H
Ch 2
23
24
L
-
Ch 3
25
26
27
+
H
L
28
29
30
31
32
33
Row B
Ch 4
H
L
-
Ch 5
34
35
+V
-V
36
37
38
39
-
+
H
Ch 6
40
41
42
43
L
-
Ch 7
44
45
46
47
48
49
50
51
Row C
41505
CJC
CJC
0+ chassis 01+ chassis 1GND for
GND for
shield
shield
No connection allowed to terminals 36 and 49
Specifications - 1797-IRT8
Number of Inputs
8 channels
IS Input Type
EEx ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1
Group A-G T4
IS Module Type
EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 & 2
Group A-D T4
Input Type
Suitable for Pt 100, Pt200, Ni 100, Ni120, Ni200, 10Cu
RTD,
Thermocouple Type B, E, J, K, N, R, S, T, TXK/XK (L)
Configuration via internal bus
Signal Input Range
0 to 500 ohms; -40 to 100mV
Settling Time to 99% of
8ms (mV mode, oF thermocouple)
Final Value
Open RTD Detection
Out of range upscale reading
Lead Resistance
< 15 ohm total
Compensation
Transfer Characteristics
Accuracy
RTDs: 0.1% of span @ 20oC, filter cutoff < 1Hz
Thermocouples: 0.1% of span @ 20oC,
filter cutoff < 1Hz
Temperature Effect
Cold junction compensation = +1oC
150ppm/oC (primary range)
Indicators
8 red fault indicators
1 green module power indicator
Data Organization
Overrange Alarm
Individually for each channel
Lead Breakage Alarm Individually for each channel
Fault State
Individually for each channel (includes overrange, lead
breakage and short circuit)
Sensor Mode RTD 2,
Common to groups of 4 channels (ch 0-3, ch 4-7)
3, or 4-wire,
TC Sensor Type (e.g. TC, Common to groups of 4 channels (ch 0-3, ch 4-7)
Type B, E, J..., RTD or
mV
Internal Reference
Common to all channels (0oC, 20oC, 25oC, 30oC, 40oC,
Junction (TC mode)
50oC, 60oC, 70oC selectable
Output (intrinsically safe) Ui < 5.8V
(16 position male/female Ii < 400mA
flexbus connector)
Li = Negligible
Ci < 1.35µF
Isolation Path
Isolation Type
Input to power supply
Galvanic to DIN EN50020
Input to flexbus
Galvanic to DIN EN50020
Input to input
None
Power supply to flexbus Galvanic to DIN EN50020
Power Supply
(+V, -V intrinsically safe)
Module Field-Side Power
Consumption
Power Dissipation
Thermal Dissipation
Module Location
Conductor Wire Size
Dimensions
Weight
Keyswitch Position
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock Operating
Nonoperating
Vibration
Agency Certification
CENELEC
UL, C-UL
FM
+V
-V
Ui < 9.5V dc
Ii < 1A
Li = Negligible
Ci = Negligible
1.6W
1.6W
Maximum 5.46BTU/hr
Cat. No. 1797-TB3 or -TB3S Terminal Base Unit
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
200g (approximate)
2
-20 to +70oC (-4 to +158oF)
-40 to +85oC (-40 to +185oF)
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
Certificates
CENELEC
DMT 98 ATEX E023 X
UL, C-UL
UL Certificate Number 99.19699
FM
FM Certificate Number 3009806
C
US
Class I Division 1 Hazardous
Publication 1797-2.1 - August 2001
38
2 Input Frequency Module Cat. No. 1797-IJ2
FLEX Ex
2 Input Frequency Module Cat. No. 1797-IJ2
Ex
1797-IJ2
PWR
40079
Product Features
• Software configurable frequency operating
mode, with independent selections per
frequency input
• Frequency inputs, two gate inputs and two
outputs
• Functional data: four selectable ranges,
50mV, 500mV (magnetic pickup), Flowmeter
and NAMUR
• Provides IS power to drive up to two NAMUR
and two Flowmeter frequency inputs and/or
contact switches and NAMUR gate inputs
• NAMUR lead breakage indication for any
lead, signal to the backplane and LED (per
channel) blinking red for fault
Publication 1797-2.1 - August 2001
• NAMUR lead breakage defeat on per channel
basis via module data table (NAMUR inputs
only)
• Frequency count range up to 32k Hz
• Calculate frequency on time interval or input
count
• Programmable scaling
• Acceleration value calculated
• Maximum frequency or acceleration alarms
• All channels updated to the backplane every
< 4 ms (according to sampling time)
FLEX Ex
2 Input Frequency Module Cat. No. 1797-IJ2
39
Customer Connections
+V
power
supply
-V
+V
flexbus
Bus
6V
uC
NAMUR
prox
3V
+8V
N
50mV select
vortex
sensor
jumper for 50mV sensor
none for 500mV
500/50mV
GND
NAMUR
prox
magnetic
sensor
+8V
N
jumper for 50mV sensor
none for 500mV
50mV select
500/50mV
GND
magnetic
sensor
R NO
R Com
R NC
valve
audible
alarm
solenoid
41302
Terminal Base Assignment
0
1
2
3V
6V
17
18
3
4
5
6
7
8
9
10
11
12
13
14
15
Row A
16
V+ GND 50 500/50 N 8V
mV mV
Sel
Channel 0 Frequency Input
19
20
21
22
23
8V N 500/50 50 GND V+ 6V 3V
mV mV
Sel
Channel 1 Frequency Input
24
25
26
27
28
29
30
8V
8V N 500/50 50 GND
mV mV
Sel
31
32
33
Row B
R0 NO R0 NC
GND 50 500/50 N
mV mV
Sel
Channel 0 Gate Input
Row C
34
35
36
37
38
39
R1 NO R1 NC
Channel 1 Gate Input
40
41
42
43
44
45
46
47
48
49
50
51
41506
+V
-V
R0 COM
R1 COM
+V
-V
No connection allowed to terminals 19, 30, 36, 38, 39, 47, 48, 49
Publication 1797-2.1 - August 2001
40
2 Input Frequency Module Cat. No. 1797-IJ2
Specifications - 1797-IJ2
Number of Inputs
2 frequency channels
2 gate channels
IS Input Type
EEx ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1
Group A-G T4
IS Module Type
EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 & 2
Group A-D T4
Input (intrinsically safe) to
DIN19234 (NAMUR)
No load voltage short
8V dc/8mA
circuit current
Switching point/
1.2-2.1mA/0.2mA
switching hysteresis
Input pulse length/
>20µs/>20µs
pulse pause
Lead breakage monitoring Breakage current <0.35mA
Inputs to Flowmeter
Input signal
Threshold 3V or 6V selectable
Voltage available at 20mA >15V
Inputs to Magnetic pickup 50mV or 500mV selectable
input signal
Processing time
<4ms
Input Frequency
1.0Hz - 32,767Hz
Resolution and accuracy
Minimum FrequencyResolution
Sampling Time (ms)Accuracy (%)
2
0.043
4
0.033
5
0.031
10
0.027
20
0.025
50
0.023
100
0.023
200
0.023
500
0.023
1000
0.023
Frequency Input
Magnetic pickup: 50mV, 500mV
Characteristics
NAMUR: 8V, 8mA
Flowmeter: low <3V, high >6V
Frequency Input Impedance >5kΩ magnetic pickup
Rating
>10KΩ flowmeter
Outputs
2 relay outputs
Output Switching Time
<10ms
Gate Inputs
2
Input (intrinsically safe) to
DIN19234 (NAMUR)
No load voltage short
8V dc/8mA
circuit current
Switching point/
1.2-2.1mA/0.2mA
switching hysteresis
Input pulse length/
>20µs/>20µs
pulse pause
Lead breakage monitoring Breakage current <0.35mA
FLEX Ex
Indicators
Output (intrinsically safe)
(16 pin male and female
flexbus connector)
Isolation Path
Input to power supply
Input to flexbus
Input to input
Output to power supply
Output to flexbus
Output to output
Power Supply
(+V, -V intrinsically safe)
Module Field-Side Power
Consumption
Power Dissipation
Thermal Dissipation
Module Location
Conductor Wire Size
Dimensions
Weight
Keyswitch Position
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Operating
Nonoperating
Vibration
Agency Certification
CENELEC
UL, C-UL
FM
6 yellow status indicators
4 red fault indicators
1 green module power indicator
Uo < 5.8V
Io < 400mA
Li < Negligible
Ci < 2.64µF
Isolation Type
Galvanic to DIN EN50020
Galvanic to DIN EN50020
None
Galvanic to DIN EN50020
Galvanic to DIN EN50020
Galvanic to DIN EN50020
Ui < 9.5V dc
Ii < 1A
Li = Negligible
Ci = Negligible
4.25W
4.25W
Maximum 14.5BTU/hr
Cat. No. 1797-TB3 or -TB3S Terminal Base Unit
12 gauge (4mm2) stranded maximum
3/64in (1.2mm) insulation maximum
46mm x 94mm x 75mm
(1.8in x 3.7in x 2.95in)
200g (approximate)
1
-20 to +70oC (-4 to +158oF)
-40 to +85oC (-40 to +185oF)
5 to 95% noncondensing
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested to 15g peak acceleration, 11(+1)ms pulse width
Tested 2g @ 10-500Hz per IEC68-2-6
II (1) 2G EEx ia/ib IIB/IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ib/[ia] IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
Certificates
CENELEC
DMT 98 ATEX E033 X
UL, C-UL
UL Certificate Number 99.19699
C
FM
Publication 1797-2.1 - August 2001
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
FLEX Ex
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
41
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
The 1797-PS2N is a 24V dc in/quad-Ex dc out
power supply in an explosion-proof enclosure with
1 inch conduit pipe-thread input/output
terminations.
1797-PS2N
The 1797-PS2E is a 24V dc in/quad-Ex dc out
power supply in a flame-proof enclosure with
increased safety input/output terminations. The
24V dc glan is an M20 x 1,5 and can accept a cable
from 6mm to 12mm in diameter. The Ex outputs
are M16 x 1,5 and can accept a cable from 4mm to
8mm in diameter.
1797-PS2E
40468
30686
Product Features
• Explosion-proof enclosure, IP 66, NEMA
4/4X, conduit input terminations (“N”
versions)
• Maximum conduit length of 10 inches
• Explosion-proof enclosure, IP 65, NEMA
12/12K/13, increased safety input
terminations (“E” versions)
• 24V dc supply source
• Four channels, 8.5W output each channel
• Dual power feeds for source input
redundancy
• Outputs are IS galvanically isolated from the
source
• All channels are independently IS limited
Customer Connections
Type of Power Input
dc
IS Limiters
Voltage and Current
Dual Input
Diodes
IS Isolation
Hazardous to IS
IS Power Output
-V
+
+V
-
-
-V
+V
-V
+V
chassis GND
-V
Vin1
+
Vin2
Out 1
Out 2
Out 3
Out 4
+V
41315
Publication 1797-2.1 - August 2001
42
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
FLEX Ex
Understanding System Planning
Modules
Requires
Fiber Hub
8.5W
Part of system planning is determining what
modules are needed for the application, how many
power supplies are needed, how to best partition
the system, and where to locate the system
cabinets.
Two ControlNet Adapters
8.5W each
Two Analog Inputs
7.5W each
Two Analog Outputs
6.3W each
A key task in the development cycle is determining
the number of power supply outputs (thus power
supplies) you will need. For example, you will
need eleven power outputs if you are using the
fiber hub, which requires 8.5W:
Each power supply has four independent IS power
outputs capable of 8.5W each. In this example, we
required eleven IS power outputs so three power
supplies were sufficient.
EEx d
/e
Two Thermocouple Inputs
1.6W each
Two Digital Outputs
7.5W each
Three NAMUR Digital Inputs
2.8W each
Two Counter Inputs
4.25W each
The total number of power supplies needed
depends on the modules used and the total system
configuration. The following illustration shows
how this example may be configured.
Spare
IS Pwr
IS Pwr
IS Pwr
EEx ib IS Pwr
Hazardous Area
IS 1797 I/O
1797 power supply
ACNR Spare
EEx d
/e
IE8
OE8
IRT8
Spare
Spare
IS Pwr
IS Pwr
IS Pwr
EEx ib IS Pwr
Unsafe
Power
Entrance
ACNR
EEx d
/e
OB4D
IJ2
IS 1797 I/O
1797 power supply
Safe Area
IJ2
OB4D IBN16
IBN16 IBN16
IE8
IRT8
OE8
IS Pwr
IS Pwr
IS Pwr
EEx ib IS Pwr
1797 power supply
RPA
RPFM
RPFM
IS 1797 Fiber Hub
41306
Publication 1797-2.1 - August 2001
FLEX Ex
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
43
Optimize Power Distribution
Assigning Power Supplies
Your FLEX Ex system must use adequate power
supplies to support the physical locations
determined earlier in this chapter. Each FLEX Ex
I/O module in the system is rated for input power,
and the FLEX Ex power supply is rated in the
number of output channels and power available
from each channel.
Note the amount of power each module requires
and assign it to a power supply output. Continue
to assign modules to the power supply output until
the supply’s output power rating is consumed. The
graphic on the next page shows the number of
modules per power supply output.
IMPORTANT
Each power supply output in the FLEX Ex system is rated
for 8.5W. Modules can be attached to the output until their
combined power equals that number. Do not exceed the
power supply maximum of 8.5W.
5
4
IRT8
1.6W
3
IRT8
1.6W
2
IRT8
1.6W
IBN16
2.8W
1
IRT8
1.6W
IBN16
2.8W
IJ2
4.25W
0
IRT8
1.6W
IBN16
2.8W
IJ2
4.25W
Modules
IRT8
1.6W
RPFM
(In RPA)
RPFM
IRT8
1.6W
IE8
7.5W
OE8
6.3W
ACNR
8.5W
IRT8
1.6W
IRT8
1.6W
IRT8
1.6W
(In RPA)
IRT8
1.6W
IBN16
2.8W
IBN16
2.8W
IRT8
1.6W
RPA
8.5W
IBN16
2.8W
IJ2
4.25W
IBN16
2.8W
IJ2
4.25W
41661
Modules Per Power Supply Output
Publication 1797-2.1 - August 2001
44
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
FLEX Ex
Hazardous Area Installation
The following illustration provides an example of
how power supplies are arranged within the FLEX
Ex system.
Programmable
Logic Controller
Optional
1786-RPA 1786-RPFM 1786-RPFM
User Supplied
24V Supply
(85 to 264V ac future)
.
.
.
1
to other devices
Non-Hazardous Location
Fiber Cable
Optional
1797-RPA 1797-RPFM
1797-RPFM
Hazardous Location
Class I, Division 1
or
(Zone 1)
.
.
.
1
to other hazardous devices
Hardened Conduit
1797-PS2N
or
(1797-PS2E)
Adapter
Module
.
.
.
.
.
Hardened Conduit
.
.
.
.
.
.
.
.
.
.
1
.
.
.
.
.
Adapter
Module
.
.
.
.
.
.
.
.
.
.
.
1797-PS2N
or
(1797-PS2E)
.
.
Hardened Conduit
.
.
1
.
.
.
.
.
1797-PS2N
or
(1797-PS2E)
42304
Publication 1797-2.1 - August 2001
FLEX Ex
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
45
Terminal Assignment
North America DC Power Input
1 2 3 4 5
1797-PS2N
+
-
cha + GND
Vin2
Vin1
1797-PS2E
3
1
2
4
+
-
+
Vin1
cha
GND
Vin2
5
-
IS Power Output
10 11 12 13 14 15 16 17
+V -V
+V -V
+V -V
+V -V
Out 1
Out 2
Out 3
Out 4
41256
10 11 12 13 14 15 16 17
+V -V
+V -V
+V -V
+V -V
Out 1
Out 2
Out 3
Out 4
41271
Publication 1797-2.1 - August 2001
46
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
Specifications
IS Module Type
IS Output Type
1797-PS2N/A
Class I Division 1 Groups C-D T4
(UL and C-UL)
Class I Division 2 Groups A-D T4
(UL and C-UL)
1797-PS2E
EEx de [ib] IIC T4
1797-PS2N/B
Class I Division 1 Groups B-D T4
(UL, C-UL and FM)
Class I Division 2 Groups A-D T4
(UL, C-UL, and FM)
Class I Zone 1 AEx IIB (FM)
Class I Zone 2 AEx IIC (FM)
Class I, II, III Division 1 & 2
Groups A-G (UL and C-UL)
EEx ib IIC
AEx ib IIC (FM)
Class I, II, III Division 1 & 2
Groups A-G (UL, C-UL, and FM)
Input Connectors
Voltage Range
Current Consumption
Ripple
Input Power Entrance
FLEX Ex
3.1A
1” NPT, <6” conduit allowed
between power supply and seal
(UL and C-UL)
Output Connectors
Output Power
Maximum Input Voltage
Voltage UO
Current IO
24V dc
Terminals 1, 2, 4, 5
18 to 32V
1.6A
3.1A
5% ac
Increased safety
1” NPT, 6” conduit allowed between power
supply and seal (UL and C-UL)
1” NPT, 0” conduit allowed between power
supply and seal (FM)
Terminals 10-17
4x8.5W
Um = 40V dc
<9.5V
<1A
Co (IIC)
<800 nF
Lo (IIC)
<10 µH
Maximum Output Cable
Resistance (both directions)
Isolation Path
Input Power to Output
Power
Output to Output
Input Power
Power Dissipation
Thermal Dissipation
<0.1Ω
Publication 1797-2.1 - August 2001
Galvanic to DIN EN50020
None
55W
21W
71.67 BTU/hr
FLEX Ex
FLEX Ex Power Supplies Cat. Nos. 1797-PS2N, and -PS2E
Specifications Continued
Conductors Wire Size
1797-PS2N/A
Dimensions
Protections Class
Weight (approximately)
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock Operating
Non-Operating
Vibration
Agency Certification
CENELEC
UL, C-UL
1797-PS2E
1797-PS2N/B
12 gauge (4mm2) stranded maximum
1.2mm (3/64in) insulation maximum
Use wire rated for 100oC operation
174mm x 174mm x 280mm
174mm x 174mm x 128mm
(6.9in x 6.9in x 11.0in)
(6.9in x 6.9in x 5.04in)
IP 65/NEMA 7B
IP66/NEMA 7B
7.7kg (17lbs)
7.3kg (16lbs)
174mm x 174mm x 128mm
(6.9in x 6.9in x 5.04in)
IP66/NEMA 7B
7.3kg (16lbs)
-20 to 70oC (-4 to 158oF)
-40 to 85oC (-40 to 185oF)
5 to 95% noncondensing
Tested 15g peak acceleration, 11 (±1)ms pulse width
Tested 15g peak acceleration, 11 (±1)ms pulse width
Tested 2g @ 10-500Hz per IEC 68-2-6
Class I Division 1 Groups C-D T4
Class I Division 2 Groups A-D T4
FM
EEx de [ib] IIC T4
-
-
Certificates
CENELEC
-
BVS 98.D.2055X
UL, C-UL
UL Certificate Number 99.19699
-
C
FM
47
US
Class I Division 1 Hazardous
-
Class I Division 1 Groups B-D T4
Class I Division 2 Groups A-D T4
Mounting - Class I Division 1 Groups B-D T4,
Class I Division 2, Groups A-D, T4,
Class I Zone 1 IIC
IS Power - Class I Division 1&2 Groups A-G T4
Class I Zone 1 AEx [ib] IIC
UL Certificate Number 99.19699
C
-
US
Class I Division 1 Hazardous
FM Certificate Number 3009806
Publication 1797-2.1 - August 2001
48
FLEX Ex Accessories Cat. Nos. 1797-BOOT, -INS, and -EXMK
FLEX Ex
FLEX Ex Accessories Cat. Nos. 1797-BOOT, -INS, and -EXMK
Use the ControlNet BNC boot, trunk insulator, and marking kit in your
cable connections.
The 1797-BOOT covers the BNC connector on the ControlNet Ex
trunk cable.
tap
IS
insulators
tap
tap
trunk terminator with
intrinsically safe insulator
trunk terminator with
intrinsically safe insulator
trunk-cable section
trunk-cable section
30094
The 1797-INS is a bag of assorted insulators that you can use to
replace those shipped with the product. The 1797-EXMK is a marking
kit for FLEX Ex cable.
Cable #A
38
Tab can be marked with
cable system identification
(example shown).
30597-M
Publication 1797-2.1 - August 2001
FLEX Ex
Extender Cables Cat. Nos. 1794-CE1 and -CE3
49
Extender Cables Cat. Nos. 1794-CE1 and -CE3
Extender Cables
Use the optional 1794-CE1 (0.3m, 1ft) or 1794-CE3 (0.9m, 3ft) extender
cable (one per system) to arrange your FLEX Ex system into two rows
or split your system into horizontal and vertical orientation.
1794-CE1
or
1794-CE3
Extender
Cable
20129-M
Bus Isolator
.
.
FLEX I/O
.
.
.
.
.
.
.
.
.
.
.
..
.
.
.
.
1794-CE3
.
1
.
.
.
.
.
.
1797-BIC
1797-CEC
.
.
.
..
.
.
.
.
FLEX Ex
.
.
.
40089
Publication 1797-2.1 - August 2001
50
Intermixed Systems
FLEX Ex
Intermixed Systems
Intermixed Systems
The bus isolator modules, 1797-BIC and -CEC, allow you to
configure FLEX Ex modules and FLEX I/O modules on the DIN rail
when attached to the same adapter and grouped together on
appropriate sides of the bus isolator module. This highly flexible,
cost-effective solution combines intrinsically safe and
non-intrinsically safe systems.
Intermixed systems can be configured for use in the:
• safe area much like traditional IS and I/O systems
• hazardous and safe control equipment where the distance of
physical separation is short
• FLEX Ex I/O with communication adapters that are not
intrinsically safe
1797-CEC
any FLEX I/O communication adapter
that supports FLEX Ex
Nonhazardous Area
or
Class I Division 2,
Groups A-D
.
.
.
.
.
.
.
.
.
.
.
.
.
Bus Isolator
FLEX Ex
.
.
..
.
.
.
.
.
..
.
.
.
.
.
Field Wiring to
Zone 0
Class I, II, III Division 1,
Groups A-G
1
.
.
.
.
.
.
.
.
.
FLEX I/O
42848
Mixing Systems in
the Safe Area
Hazardous Area
Zone 1
Class I Division 1,
Groups A-D
Bus Isolator
any FLEX I/O communication adapter
that supports FLEX Ex
1797-CEC
1794-CE3
.
.
.
.
.
.
.
.
.
.
.
.
.
..
.
.
.
Maximum of 1m
.
FLEX Ex
.
1
.
.
.
.
.
.
.
.
.
1797-BIC
Nonhazardous Area
or
Class I Division 2,
Groups A-D
.
..
.
.
.
FLEX I/O
.
.
Field Wiring to
Zone 0
Class I, II, III Division 1,
Groups A-G
.
40087
Mixing Systems in
the Hazardous Area
Hazardous Area
Zone 1
Class I Division 1,
Groups A-D
any FLEX I/O communication adapter
that supports FLEX Ex
Nonhazardous
Area
1797-CE1S
.
Flexbus Feed Through
.
.
.
.
.
1
conduit
.
1794-CE3
1797-CEC
1797-BIC
Max of 1m
FLEX Ex
.
.
.
.
..
.
.
.
.
.
.
.
.
.
..
.
Field Wiring to
Zone 0
Class I, II, III Division 1,
Groups A-G
Publication 1797-2.1 - August 2001
.
.
40088
FLEX Ex
Bus Isolator Module and Flexbus Connector Cat. Nos. 1797-BIC and -CEC
51
Bus Isolator Module and Flexbus Connector Cat. Nos. 1797-BIC and -CEC
Slave Side
Master Side
1797-CEC
1797-BIC
FLEXBUS
ISOLATOR
PWR
FLEXBUS
CONNECTOR
+V
1
-V
2
+V
3
-V
4
40082
Product Features
• Provides an IS-compatible mechanism to
separate two sections of the backplane
allowing IS and non-IS field-device wiring to
the same I/O group
• Converts hazardous power to IS-safe power
to run one side of the bus
receiver/transmitter circuitry and IS-safe
power to slave side modules
• Up to 8 FLEX Ex modules may be attached to
the slave side
Customer Connections
1797-CEC
1797-BIC
Bus
flexbus
flexbus
PWR
limit
flexbus
flexbus
Bus
+V
power
supply
-V
41693
Publication 1797-2.1 - August 2001
52
Bus Isolator Module and Flexbus Connector Cat. Nos. 1797-BIC and -CEC
1797-BIC Specifications
I/O Module Capacity
FLEX Ex
1797-CEC Specifications
8 FLEX Ex modules
Indicators
Not applicable
Indicators
Power green
Weight
Approximately 100g
Isolation Path
Flexbus to Flexbus
Flexbus Slave Side
to Power Supply
Galvanic to DIN EN50020
Galvanic to DIN EN50020
Power Consumption
18V - 32V dc @ 0.15A
1
Environmental Conditions
Power Source Failure
Maximum Input
Um = 253V ac
Power Dissipation
2.1W
Thermal Dissipation
7.2 BTU/hr
IS Module Type
[EEx ib] IIC
12 gauge (4mm ) stranded maximum
3/64in (1.2mm) insulation maximum
Weight
Approximately 200g
2
Environmental Conditions
Operational Temperature
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Operating
Tested 30g peak acceleration, 11 (±1)ms pulse
width
Non-Operating
Tested 30g peak acceleration, 11 (±1)ms pulse
width
Vibration
Tested 5g @ 10-500Hz per IEC 68-2-6
Uo
Io
Po
Lo
Co
<
<
<
<
<
5.75V dc
400mA
2.05W
100µH
39µF
Agency Certification
CENELEC
II (2)G [EEx ib] IIC
FM
Nonincendure, use for Class I, Division 2 Groups
A-D or Class I, Zone 2 Group IIC
Provides intrinsically safe outputs to Class I,
Division 1 Groups A-D or Class I, Zone 1 Group IIC
Certificates
CENELEC
DMT 00 ATEX E056
FM
FM Certificate Number 3010810
Declaration of Conformity
Directive 94/9 EC
1
Zone 2
II 3G EEx nA IIC T4 X
A total of eight I/O modules can be attached to a 1794 FLEX I/O adapter. The
1797-CEC and -BIC are not included in this number. In intermixed systems, the
number of 1797 FLEX Ex I/O modules (attached onto the 1797-BIC) plus the
number of 1794 FLEX I/O modules (connected between the adapter and the
1797-CEC) cannot exceed eight.
Publication 1797-2.1 - August 2001
-20 to 70oC (-4 to 158oF)
Storage Temperature
-40 to 85oC (-40 to 185oF)
Relative Humidity
5 to 95% noncondensing
Shock
Operating
Tested 30g peak acceleration, 11 (±1)ms pulse
width
Non-Operating
Tested 30g peak acceleration, 11 (±1)ms pulse
width
Vibration
Conductor Wire Size
Output (Intrinsically Safe)
(16 pin male and female flexbus
connector)
Operational Temperature
Tested 5g @ 10-500Hz per IEC 68-2-6
Agency Certification
FM
Nonincendure, use for Class I, Division 2 Groups
A-D or Class I, Zone 2 Group IIC
Certificates
FM
FM Certificate Number 3010810
Declaration of Conformity
Directive 94/9 EC
Zone 2
II 3G EEx nA IIC T4 X
FLEX Ex
Extender Cables and Flexbus Feed Throughs Cat. Nos. 1797-CE1S, - CE3S, -CEFTN, and -CEFTE
53
Extender Cables and Flexbus Feed Throughs Cat. Nos. 1797-CE1S, - CE3S, -CEFTN, and -CEFTE
Use the optional Bus Isolator 1797-CE1S (0.3m, 1ft) or 1797-CE3S
(0.9m, 3ft) extender cable to mix systems in the hazardous area.
Hazardous Area
Zone 1
Class I Division 1,
Groups A-D
any FLEX I/O communication
adapter that supports FLEX Ex
Nonhazardous
Area
1797-CE1S
.
Flexbus Feed Through
.
.
.
.
.
conduit
1
.
1794-CE3
1797-CEC
1797-BIC
Max of 1m
FLEX Ex
.
.
.
.
..
.
.
.
.
.
.
.
.
.
..
.
Field Wiring to
Zone 0
Class I, II, III Division 1,
Groups A-G
.
.
40088
Flexbus Feed Throughs
41680
Flexbus Feed Through Specifications
For Metric Threads on the Connector:
Part Number
Manufacturer
RS-FEED.M
Pepperl+Fuchs
07-9109-99979XP1
Bartec
For NPT Threads on the Connector:
Part Number
Manufacturer
RS-FEED.NPT
Pepperl+Fuchs
07-9199-99979XP1
Bartec
Agency Certification
CENELEC
EEx d IIC T6IBEx U 98 ATEX 1033U
FM
FM Approved per J.I. 3002937
Publication 1797-2.1 - August 2001
54
Support Services
FLEX Ex
Support Services
Support Services
At Allen-Bradley, customer service means experienced
representatives at Customer Support Centers in key cities throughout
the world for sales service and support. Our value-added services
include:
Technical Support
•
•
•
•
SupportPlus programs
Telephone support and 24-hour emergency hotline
Software and documentation updates
Technical subscription services
Engineering and Field Services
•
•
•
•
Application engineering assistance
Integration and start-up assistance
Field service
Maintenance support
Technical Training
•
•
•
•
Lecture and lab courses
Self-paced computer and video-based training
Job aids and workstations
Training needs analysis
Repair and Exchange Services
•
•
•
•
Publication 1797-2.1 - August 2001
Your only “authorized” source
Current revisions and enhancements
Worldwide exchange inventory
Local support
FLEX Ex
Support Services
55
Notes:
Publication 1797-2.1 - August 2001
The following are trademarks of Rockwell Automation: FLEX Ex, FLEX I/O, ControlNet Ex, PLC-5/20C, PLC-5/40C, SLC 500, and ProcessLogix.
DeviceNet is a trademark of Open DeviceNet Vendor Association (O.D.V.A.).
ControlNet is a trademark of ControlNet International.
Publication 1797-2.1 - August 2001
Supersedes Publication 1797-2.1 - August 2000
Copyright 2000 of Rockwell International Corporation. Printed in the U.S.A.