FLEX I/O DC Input, Output, and
Input/Output Analog Modules
Catalog Numbers 1794-IE12, 1794-OE12, and 1794-IE8XOE4
Table of Contents
Top icPa ge
Important User Information2
Environment and Enclosure3
Prevent Electrostatic Discharge3
North American Hazardous Location Approval5
Install Your Analog Input/Output Module6
Connect Wiring6
Configuring Your Module11
Data Table – 1794-IE1211
Data Table – 1794-OE1213
Data Table – 1794-IE8XOE414
Specifications15
2 FLEX I/O DC Input, Output, and Input/Output Analog Modules
Important User Information
Solid state equipment has operational characteristics differing from those of electromechanical
equipment Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls
(Publication SGI-1.1
http://literature.rockwellautomation.com
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the
wide variety of uses for solid state equipment, all persons responsible for applying this equipment must
satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation, Rockwell Automation, Inc.
cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc., with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual we use notes to make you aware of safety considerations.
available from your local Rockwell Automation sales office or online at
WARNING: Identifies information about practices or circumstances that can cause an
explosion in a hazardous environment, which may lead to personal injury or death,
property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to
personal injury or death, property damage, or economic loss. Attentions help you:
identify a hazard, avoid a hazard, and recognize the consequences.
) describes some important differences between solid state
SHOCK HAZARD: Labels may be located on or inside the equipment (for example, drive
or motor) to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be located on or inside the equipment (for example, drive
or motor) to alert people that surfaces may be dangerous temperatures.
IMPORTANT
Identifies information that is critical for successful application and understanding of the
product.
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 3
Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
publication 60664-1), at altitudes up to 2000 meters without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR Publication 11. Without appropriate precautions, there may be
potential difficulties ensuring electromagnetic compatibility in other
environments due to conducted as well as radiated disturbance.
This equipment is supplied as open-type equipment. It must be mounted within
an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool. Subsequent sections of this
publication may contain additional information regarding specific enclosure
type ratings that are required to comply with certain product safety
certifications.
See NEMA Standards publication 250 and IEC publication 60529, as
applicable, for explanations of the degrees of protection provided by different
types of enclosure. Also, see the appropriate sections in this publication, as
well as Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-IN041
this equipment.
Prevent Electrostatic Discharge
, for additional installation requirements pertaining to
ATTENTION: This equipment is sensitive to electrostatic discharge, which can
cause internal damage and affect normal operation. Follow these guidelines
when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
Publication 1794-IN106D-EN-E - January 2014
4 FLEX I/O DC Input, Output, and Input/Output Analog Modules
WARNING: If you insert or remove the module while backplane power is on,
an electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
WARNING: If you connect or disconnect wiring while the field side power is
on, an electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
ATTENTION: This product is grounded through the DIN rail to chassis
ground. Use zinc plated yellow-chromate steel DIN rail to assure proper
grounding. The use of other DIN rail materials (such as aluminum or plastic)
that can corrode, oxidize, or are poor conductors, can result in improper or
intermittent grounding.
ATTENTION: To comply with the CE Low Voltage Directive (LVD), all
connections to this equipment must be powered from a source compliant
with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 5
North American Hazardous Location Approval
The following information applies when
operating this equipment in hazardous
locations:
Products marked CL I, DIV 2, GP A, B, C, D are suitable for
use in Class I Division 2 Groups A, B, C, D, hazardous
locations and nonhazardous locati ons only. Each product
is supplied with markings on the rating n ameplate
indicating the hazardous location temperat ure code.
When combining products within a system, the most
adverse temperature code (lowest “T ” number) may be
used to help determine the overall temperature code of
the system. Combinations of equipment in your system
are subject to investigation by the local Authority Havin g
Jurisdiction at the time of installation.
WARNING: EXPLOSION
HAZARD
• Do not disconnect equipment
unless power has been removed or
the area is known to be
nonhazardous.
• Do not disconnect connections to
this equipment unless power has
been removed or the area is known
to be nonhazardous. Secure any
external connections that mate to
this equipment by using screws,
sliding latches, threaded
connectors, or other means
provided with this product.
• Substitution of components may
impair suitability for Class I,
Division 2.
• If this product contains batteries,
they must only be changed in an
area known to be nonhazardous.
Informations sur l’utilisation de cet équipement
en environnements dangereux:
Les produits marqués CL I, DIV 2, GP A, B, C, D ne conviennent
qu’à une utilisation en environnements de Classe I Division 2
Groupes A, B, C, D dangereux et non dange reux. Chaque produit
est livré avec des marquages sur sa plaque d’identification qu i
indiquent le code de température pou r les environnements
dangereux. Lorsque plusieurs produits sont co mbinés dans un
système, le code de température le plus défavorable (code de
température le plus faible) peut être uti lisé pour déterminer le
code de température global du système. Les combinaisons
d’équipements dans le système sont sujettes à inspect ion par
les autorités locales qualifiées au moment de l’installation.
WARNING: RISQUE
D’EXPLOSION
• Couper le courant ou s’assurer que
l’environnement est classé non
dangereux avant de débrancher
l'équipement.
• Couper le courant ou s'assurer que
l’environnement est classé non
dangereux avant de débrancher les
connecteurs. Fixer tous les connecteurs
externes reliés à cet équipement à l'aide
de vis, loquets coulissants, connecteurs
filetés ou autres moyens fournis avec ce
produit.
• La substitution de composants peut
rendre cet équipement inadapt é à une
utilisation en environnement de Classe I,
Division 2.
• S’assurer que l’environnement est classé
non dangereux avant de changer les
piles.
Publication 1794-IN106D-EN-E - January 2014
6 FLEX I/O DC Input, Output, and Input/Output Analog Modules
3
7
1
6
5
4
2
45284
Install Your Analog Input/Output Module
DescriptionDescription
1Keyswitch5Groove
2Terminal base6Alignment bar
3FLEXBus connector7Latching mechanism
4Module
These modules mount on a 1794-TB3G or 1794-TB3GS terminal base.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 3
(1794-IE12), 4 (1794-OE12), or 5 (1794-IE8XOE4) as required.
2. Make certain the FLEXBus connector (3) is pushed all the way to the left to
connect with the neighboring terminal base/adapter. You cannot install the
module unless the connector is fully extended.
3. Make sure the pins on the bottom of the module are straight so they will align
properly with the connector in the terminal base.
4. Position th e module (4) with its alignment bar (5) aligned with the groove (6) on
the terminal base.
5. Press firmly and evenly to seat the module in the terminal base unit. The module
is seated when the latching mechanism (7) is locked into the module.
ATTENTION: During mounting of all devices, be sure that all debris (such as
metal chips, and wire strands) is kept from falling into the module. Debris
that falls into the module could cause damage on power up.
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 7
I = Current [1794-TB3G shown]
V=Voltage
C-0...C-11 = Returns for I or V connections 0...11
+24V DC = Terminals C-34 and C-50
COM = Terminals C-35 and C-51
Chassis ground (CG) = Terminals B-16, B-33, C-38, C-40...C-45, C-47
NC = No connection
For daisy-chaining: Supply in – C-34 (+) and C-35 (-)
Supply out – C-50 (+) and C-51 (-)
Read Words
0 - Input 0Signed 2’s Complement data Value of Channel 0
1 - Input 1Signed 2’s Complement data Value of Channel 1
2 - Input 2Signed 2’s Complement data Value of Channel 2
3 - Input 3Signed 2’s Complement data Value of Channel 3
4 - Input 4Signed 2’s Complement data Value of Channel 4
5 - Input 5Signed 2’s Complement data Value of Channel 5
6 - Input 6Signed 2’s Complement data Value of Channel 6
7 - Input 7Signed 2’s Complement data Value of Channel 7
8 - Input 8Signed 2’s Complement data Value of Channel 8
9 - Input 9Signed 2’s Complement data Value of Channel 9
10 - Input 10Signed 2’s Complement data Value of Channel 10
11 - Input 11Signed 2’s Complement data Value of Channel 11
12 - StatusPU FP GF NU R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0
Write Words
0 - Reserved EN0 0 0 0 0 0 0 00000000
1 - Configuration QS 000CABC89C67C45C23C01
Where:
PU = Power up bit
FP = Field power fault
GF = General fault
NU = Not used
Rx = Out of range (x = associated channel)
EN = Enable
QS = Quick step bit – allows input filter to be reduced during rapid signal changes.
Cxx = Configuration
Publication 1794-IN106D-EN-E - January 2014
12 FLEX I/O DC Input, Output, and Input/Output Analog Modules
Range Selection Bits for the 1794-IE12, 1794-OE12, and 1794-IE8XOE4
RangeOut of RangeRange SettingCxx
-10...+10V DC < -10.0V or > 10.0VSet bits for each
4...20 mA< 4.0mA or > 20.0 mA
0...20 mA< 0.0 mA or > 20.0 mA
(1)
xx = associated channel pair
channel pair
00 = off
01 = 0...20 mA
10 = 4...20 mA
10V
11 = +
(1)
Channel Configuration
C01 for channels 0 and 1
C23 for channels 2 and 3
C45 for channels 4 and 5
C67 for channels 6 and 7
C89 for channels 8 and 9
CAB for channels 10 and 11
Safe State Selection Bits for the 1794-OE12 and 1794-IE8XOE4
When EN = 0, these bits designate the source of the safe state data for all outputs in
the module.
S1/S0 Safe State
Select Source
S1S0
00Safe State value is in the
01Reserved (Safe State value
10Clear/Reset the outputs,
11Hold output at its present
Safe State ModeSafe State Output Behavior
output words
is in the output words)
based on range selected
level
Outputs will use Safe State value
Reserved (Outputs will use Safe State
value)
+
10V range – Output set to 0V
4...20 mA range – Output set to 4 mA
0...20 mA range – Output set to 0 mA
Outputs will Hold Last State
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 13
Read Words
0 - StatusPU FP GF NU W11 W10 W9 W8 W7 W6 W5 W4 W3 W2 W1 W0
Write Words
0 - Reserved ENS1S0WR0 0 0 0 00000000
1 - Output 0Signed 2’s Complement data Value of Channel 0
2 - Output 1Signed 2’s Complement data Value of Channel 1
3 - Output 2Signed 2’s Complement data Value of Channel 2
4 - Output 3Signed 2’s Complement data Value of Channel 3
5 - Output 4Signed 2’s Complement data Value of Channel 4
6 - Output 5Signed 2’s Complement data Value of Channel 5
7 - Output 6Signed 2’s Complement data Value of Channel 6
8 - Output 7Signed 2’s Complement data Value of Channel 7
9 - Output 8Signed 2’s Complement data Value of Channel 8
10 - Output 9Signed 2’s Complement data Value of Channel 9
11 - Output 10Signed 2’s Complement data Value of Channel 10
12 - Output 11Signed 2’s Complement data Value of Channel 11
13 - Configuration 0000CABC89C67C45C23C01
Where:
PU = Power up bit
FP = Field power fault
GF = General fault
NU = Not used
Wx = Wire off (x = associated channel)
EN = Enable outputs
S1/S0 = Safe state source – When EN = 0, these bits indicate source of safe state output.
WR = Wire-off reset
Cxx = Configuration
Publication 1794-IN106D-EN-E - January 2014
14 FLEX I/O DC Input, Output, and Input/Output Analog Modules
Read Words
0 - Input 0Signed 2’s Complement data Value of Channel 0
1 - Input 1Signed 2’s Complement data Value of Channel 1
2 - Input 2Signed 2’s Complement data Value of Channel 2
3 - Input 3Signed 2’s Complement data Value of Channel 3
4 - Input 4Signed 2’s Complement data Value of Channel 4
5 - Input 5Signed 2’s Complement data Value of Channel 5
6 - Input 6Signed 2’s Complement data Value of Channel 6
7 - Input 7Signed 2’s Complement data Value of Channel 7
8 - StatusPU FP GF NU W3 W2 W1 W0 R7 R6 R5 R4 R3 R2 R1 R0
Write Words
0 - Reserved ENS1S0WR0 0 0 0 00000000
1 - Output 0Signed 2’s Complement data Value of Channel 0
2 - Output 1Signed 2’s Complement data Value of Channel 1
3 - Output 2Signed 2’s Complement data Value of Channel 2
4 - Output 3Signed 2’s Complement data Value of Channel 3
5 - Configuration QS 000CABC89C67C45C23C01
Where:
PU = Power up bit
FP = Field power fault
GF = General fault
NU = Not used
Wx = Wire off (x = associated channel)
Rx = Out of range (x = associated channel)
EN = Enable outputs
S1/S0 = Safe state source – When EN = 0, these bits indicate source of safe state output.
WR = Wire-off reset
QS = Quick step bit – allows input filter to be reduced during rapid signal changes.
Cxx = Channel Configuration (xx = associated channel pair)
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 15
Specifications
General Specifications for the 1794-IE12, 1794-OE12, and 1794-IE8XOE4 Modules
Power dissipation, max 1.2 W @ 31.2V DC7.68 W @ 24V DC3.4 W @ 24V DC
Thermal dissipation4.1 BTU/hr @ 31.2V DC 26.2 BTU/hr @ 24V DC 11.6 BTU/hr @ 24V DC
Terminal base
screw torque
Wire typeShielded
Wire sizeDetermined by installed terminal base
Wiring category
North American
temperature code
Dimensions (approx.)
(HxWxD)
Enclosure type ratingNone (open-style)
Keyswitch position345
(1)
Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-IN041
(2)
includes 5 % AC ripple
1794-TB3G or 1794-TB3GS
(2)
24V DC
24V DC
10.5...31.2V DC
30 mA @ 24V DC;
45 mA @ 10.0V DC
60 mA
No isolation between individual channels
Type tested @ 850V AC for 60 s between field and system
0.8 Nm (7 lb-in.)
1.0 Nm (9 lb-in.) – 1794-TBN only
(1)
2 – on signal ports
2 – on power ports
(2)
24V DC
24V DC
10.0...31.2V DC
320 mA @ 24V DC;
720 mA @ 10.0V DC
320 mA
T4A
46 x 94 x 54 mm
(1.81 x 3.7 x 2.1 in.)
.
(2)
24V DC
24V DC
10.0...31.2V DC
140 mA @ 24V DC;
280 mA @ 10.0V DC
140 mA
Publication 1794-IN106D-EN-E - January 2014
16 FLEX I/O DC Input, Output, and Input/Output Analog Modules
10V/m with 1 kHz sine-wave
80% AM from 80...2000 MHz
10V/m with 200 Hz 50% Pulse
100% AM @ 900 MHz
10V/m with 200 Hz 50% Pulse
100% AM @ 1890 MHz
10V/m with 1 kHz sine-wave
80% AM from 2000...2700 MHz
±4 kV @ 5 kHz
on power ports
±4 kV @ 5 kHz
on shielded
signal ports
10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
IEC 61000-4-4:
±4 kV @ 5 kHz
on power ports
±2 kV @ 5 kHz
on shielded
signal ports
IEC 61000-4-3:
10V/m with 1 kHz sine-wave
80% AM from 80...2000 MHz
10V/m with 200 Hz 50% Pulse
100% AM @ 900 MHz
10V/m with 200 Hz 50% Pulse
100% AM @ 1890 MHz
3V/m with 1 kHz sine-wave
80% AM from 2000...2700 MHz
IEC 61000-4-4:
±4 kV @ 5 kHz on power ports
±4 kV @ 5 kHz on shielded
signal ports
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 17
Output Specifications – 1794-OE12 and 1794-IE8XOE4 Modules
Attribute1794-OE12
Number of outputs12 single-ended, nonisolated 4 single-ended, nonisolated
Output voltage terminal0V output until module is configured
Output current terminal0 mA output until module is configured
Output resolution
Voltage terminal
Current terminal
10V (user configurable)
+
4...20 mA (user configurable)
0...20 mA (user configurable)
16 bit
320 μV/cnt
0.641 μA/cnt
Data format16 bit
Output conversion typeDigital-to-analog converter
Step response to 63% of full scale,
Load on output current0...750 Ω
Load on voltage output, max3.0 mA
(1)
Includes offset, gain, nonlinearity, and repeatability error terms.
Input Specifications – 1794-IE12 and 1794-IE8XOE4 Modules
Attribute1794-IE12
Number of inputs12 single-ended, nonisolated
Input resolution
Voltage terminal
Current terminal
from channel to channel
16 bits
320 μV/cnt
0.641 μA/cnt
Data formatLeft-justified 16-bit
Input conversion typeSuccessive approximation
Input conversion rate8.0 ms all channels
1794-IE8XOE4
1794-IE8XOE4
8 single-ended, nonisolated
from channel to channel
Publication 1794-IN106D-EN-E - January 2014
18 FLEX I/O DC Input, Output, and Input/Output Analog Modules
Input Specifications – 1794-IE12 and 1794-IE8XOE4 Modules
Attribute1794-IE12
Input voltage terminal+10V (user configurable)
Input current terminal
Specification
Certification
Input impedance, nom. (nom)
Voltage terminal
Current terminal
Normal mode
rejection ratio
Step response to 63% of full scale Voltage/current terminal:
Absolute accuracy
Voltage input
Current input
Accuracy drift with temperature
Voltage terminal
Current terminal
(1)
4...20 mA (user configurable)
0...20 mA (user configurable)
> 1 MΩ
(2)
< 100 Ω
Voltage/current terminal:
-3 dB @ 0.05 Hz; -20 dB/decade
-52 dB @ 50 Hz;
-54 dB @ 60 Hz
Voltage/current terminal with Quick Step:
-3 dB @ 1.5 Hz; -20 dB/decade
-29 dB @ 50 Hz;
-31 dB @ 60 Hz
1.3 s
Voltage/current terminal with Quick Step:
0.09 s
0.1% full scale @ 25 °C
0.1% full scale @ 25 °C
0.004% Full Scale/°C
0.004% Full Scale/°C
Voltage overload, max30V continuous, one channel at a time
Current overload, max32 mA continuous, one channel at a time
(1)
Includes offset, gain, nonlinearity, and repeatability error terms.
(2)
If 24V DC is removed from the module, input resistance is < 100 Ω. This is also true at 0 mA current input even i f there
is 24V DC.
If there is an input current applied, input impedance is > 1 M
Ω.
1794-IE8XOE4
Publication 1794-IN106D-EN-E - January 2014
FLEX I/O DC Input, Output, and Input/Output Analog Modules 19
Certifications (when product is marked)
(1)
AttributeValue
c-UL-usUL Listed Industrial Control Equipment, certified for US and Canada.
See UL File E65584.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations,
certified for U.S. and Canada. See UL File E194810.
CEEuropean Union 2004/108/EC EMC Directive, compliant with:
EN50082-2; Industrial Immunity
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61326; Meas./Control/Lab., Industrial Requirements
KCKorean Registration of Broadcasting and Communications
Equipment, compliant with:
Article 58-2 of Radio Waves Act, Clause 3
(1)
See the Product Certification lin k at http://www.rockwellautomation.com/products/certification/ for Declaration of
Conformity, Certificates, and other certification details.
Publication 1794-IN106D-EN-E - January 2014
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you in using its products. At
http://www.rockwellautomation.com/support/
technical and application notes, sample code and links to software service packs, and a MySupport feature
that you can customize to make the best use of these tools.
For an additional level of technical phone support for installation, configuration and troubleshooting, we
offer TechConnect support programs. For more information, contact your local distributor or Rockwell
Automation representative, or visit http://www.rockwellautomation.com/support/
, you can find technical manuals, a knowledge base of FAQs,
.
Installation Assistance
If you experience a problem within the first 24 hours of installation, please review the information that's
contained in this manual. You can also contact a special Customer Support number for initial help in getting
your product up and running.
United States or Canada1.440.646.3434
Outside United States or
contact your local Rockwell Automation representative.
, or
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from
the manufacturing facility. However, if your product is not functioning and needs to be returned, follow
these procedures.
United StatesContact your distributor. You must provide a Customer Support case number
Outside United StatesPlease contact your local Rockwell Automation representative for the return
(call the phone number above to obtain one) to your distributor to complete
the return process.
procedure.
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