Allen-Bradley 1794-IB16D User manual

Installation Instructions
FLEX I/O Digital Input and Output
Modules with Diagnostics
Catalog numbers 1794-IB16D, 1794-OB16D
Table of Contents
Topic Page
Important User Information 2
Environment and Enclosure 3
Preventing Electrostatic Discharge 3
North American Hazardous Location Approval 6
Install the Isolated Analog Output Module 7
Diagnostics 11
Configuration 14
Specifications 16

2FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
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 available from your local Rockwell Automation Sales Office or online at
http://www.rockwellautomation.com/literature/) describes some important differences between
solid-state 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, when necessary, we use notes to make you aware of safety considerations.
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.
IMPORTANT Identifies information that is critical for successful application and understanding of
the product.

FLEX I/O Digital Input and Output Modules with Diagnostics 3
Publication 1794-IN096D-EN-P - June 2018
Environment and Enclosure
Preventing Electrostatic Discharge
ATTENTION: This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications (as defined in
EN/IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is not intended for use in residential environments and may not
provide adequate protection to radio communication services in such
environments.
This equipment is supplied as open-type equipment for indoor use. 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 enclosure
must have suitable flame-retardant properties to prevent or minimize the spread
of flame, complying with a flame spread rating of 5VA or be approved for the
application if nonmetallic. The interior of the enclosure must be accessible only
by the use of a tool. Subsequent sections of this publication may contain more
information regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.
In addition to this publication, see the following:
• Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for more installation requirements.
• NEMA Standard 250 and EN/IEC 60529, as applicable, for explanations of
the degrees of protection provided by enclosures.
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.

4FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
ATTENTION: This product is grounded through the DIN rail to chassis ground.
Use zinc plated chromate-passivated steel DIN rail to assure proper grounding.
The use of other DIN rail materials (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately. Be sure to ground the DIN rail
properly.
Refer to Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for more information
ATTENTION: If this equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be impaired.
ATTENTION: If this equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be impaired.
ATTENTION: Read this document and the documents listed in the Additional
Resources section about installation, configuration, and operation of this
equipment before you install, configure, operate, or maintain this product.
Users are required to familiarize themselves with installation and wiring
instructions in addition to requirements of all applicable codes, laws, and
standards.
ATTENTION: Installation, adjustments, putting into service, use, assembly,
disassembly, and maintenance are required to be carried out by suitably
trained personnel in accordance with applicable code of practice.
ATTENTION: In case of malfunction or damage, no attempts at repair should
be made. The module should be returned to the manufacturer for repair. Do not
dismantle the module.
ATTENTION: Use only a soft dry anti-static cloth to wipe down equipment. Do
not use any cleaning agents.

FLEX I/O Digital Input and Output Modules with Diagnostics 5
Publication 1794-IN096D-EN-P - June 2018
WARNING: When you insert or remove the module while backplane power
is on, an electric 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. Repeated electric arcing causes excessive wear to contacts on
both the module and its mating connector. Worn contacts may create
electrical resistance that can affect module operation.
WARNING: If you insert or remove the module while backplane power is on,
an electric 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.

6FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
North American Hazardous Location Approval
The following modules are North American Hazardous Location approved: 1794-IB16D,
1794-OB16D.
The following information applies when
operating this equipment in hazardous
locations:
Informations sur l’utilisation de cet équipement
en environnements dangereux:
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 locations only. Each product is
supplied with markings on the rating nameplate indicating
the hazardous location temperature 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 Having Jurisdiction at the time of
installation.
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 dangereux.
Chaque produit est livré avec des marquages sur sa plaque
d'identification qui indiquent le code de température pour les
environnements dangereux. Lorsque plusieurs produits sont
combinés dans un système, le code de température le plus
défavorable (code de température le plus faible) peut être
utilisé pour déterminer le code de température global du
système. Les combinaisons d'équipements dans le système
sont sujettes à inspection par les autorités locales qualifiées
au moment de l'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.
AVERTISSEMENT:
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.
• LLa substitution de composants peut rendre
cet équipement inadapté à une utilisation
en environnement de Classe I, Division 2.

FLEX I/O Digital Input and Output Modules with Diagnostics 7
Publication 1794-IN096D-EN-P - June 2018
Install the Isolated Analog Output Module
The input module mounts on a 1794-TB32 or 1794-TB32S terminal base. The output
module mounts on a 1794-TB2, 1794-TB3, or 1794-TB3S terminal base.
1. Rotate the keyswitch (3) on the terminal base (4) clockwise to position 4 as
required for this type of module.
2. Make sure the Flexbus connector (1) 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 the module (7) with its alignment bar (6) aligned with the groove (5) 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 (2) is locked into the module.
Component Identification
Description Description
1 Flexbus connectors 5 Groove
2 Latching mechanism 6 Alignment bar
3 Keyswitch 7 Module
4 Terminal base
6
1
7
5
4
3
2
45284

8FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
1794-TB32 and 1794-TB32S Terminal Base Wiring for 1794-IB16D
Wiring Connections for the 1794-IB16 Module
(use with 1794-TB32 or 1794-TB32S terminal base units)
Input Input Terminal Sensor Power
Terminal
Common Supply(1)
(1) 3-wire devices only. 2-wire devices use input and sensor power terminals; 3-wire devices use input, sensor power and common
terminals.
IN 00 A-0 B-17 -V common
connected to
terminals 36, 38,
40, 42, 44, 46, 48,
and 50
+V2 connected to
terminals 43, 45,
47, and 49
IN 01 A-1 B-18
IN 02 A-2 B-19
IN 03 A-3 B-20
IN 04 A-4 B-21
IN 05 A-5 B-22
IN 06 A-6 B-23
IN 07 A-7 B-24
IN 08 A-8 B-25
IN 09 A-9 B-26
IN 10 A-10 B-27
IN 11 A-11 B-28
IN 12 A-12 B-29
IN 13 A-13 B-30
IN 14 A-14 B-31
IN 15 A-15 B-32
+V2 DC power Power terminals 43, 45, 47 and 49 (power terminals are internally connected
together in the module)
COM DC return Common terminals 36, 38, 40, 42, 44, 46, 48 and 50 (common terminals are
internally connected together in the module)
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
34
NC
+V2 = Terminals 43, 45, 47 and 49 -
Input Terminals 0…15
Sensor Power Terminals 0…15
+V1 COM1 +V1 COM1 +V1 COM1 +V1 COM1 +V2 COM2 +V2 COM2 +V2 COM2 +V2 COM2 NC
+V1 = Terminals 35, 37, 39 and 41 (not used)
COM1, COM2 = Terminals 36, 38, 40, 42, 44, 46, 48 and 50 -
NC = No connections (terminals 16, 33, 34 and 51)
NC NC
1794-TB32 shown
Voltage applied to Inputs 0…15 and Sensor power 0…15
Common for inputs 0…15 and sensor power 0…15
A
B
C

FLEX I/O Digital Input and Output Modules with Diagnostics 9
Publication 1794-IN096D-EN-P - June 2018
Connecting Wiring for the 1794-OB16D Module
use with 1794-TB2, 1794-TB3, or 1794-TB3S Terminal Base
1. Connect individual output wiring to numbered terminals on the 0-15 row (A) as
indicated in the Wiring Connections for 1794-OB16D table.
2. Connect the associated common for each output to the corresponding terminal
on the 16-33 row (B) as indicated in the Wiring Connections for 1794-OB16D
table. The common terminals of row (B) are internally connected together.
3. Connect +V DC power to terminal 34 on the 34-51 row (C). The power
terminals of row (C) are internally connected together.
4. Connect DC common (COM) to terminal 16 on the 16-33 row (B).
5. If daisychaining power to the next terminal base, connect a jumper from terminal
51 (+V DC) on this base unit to terminal 34 on the next base unit.
6. If continuing DC common to the next base unit, connect a jumper from terminal
33 (common) on this base unit to terminal 16 on the next base unit.
1794-TB32 and 1794-TB32S Terminal Base Wiring for 1794-OB16D
ATTENTION: Do not remove or replace a Terminal Base unit while power is
applied. Interruption of the backplane can result in unintentional operation or
machine motion.
17 1819 20 21 22 2324 25 26 27 2829 30 31 32 33
0 1 2 34 5 6 7 89 10 11 12 1314 15
16
35 36 37 38 39 40 41 42 4344 45 46 47 4849 50 51
34
Outputs
Commons
1794-TB3shown
-V (Supply common) = TerminalsB-16…B-33
+V (Supply +voltage in) = TerminalsC-34…C-51
-V
Voltage
In +V
Voltage
Out +V
Voltage
A
B
C
Use B-33 and C-51 for daisychaining to next terminal base unit
Common -V
Common
Terminals35…50 not available on 1794-TB2

10 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
Wiring Connections for the 1794-OB16D Output Module
use with 1794-TB2, 1794-TB3, or 1794-TB3S terminal base
Output Output Terminal Common Terminal
Output 00 A-0 B-17
Output 01 A-1 B-18
Output 02 A-2 B-19
Output 03 A-3 B-20
Output 04 A-4 B-21
Output 05 A-5 B-22
Output 06 A-6 B-23
Output 07 A-7 B-24
Output 08 A-8 B-25
Output 09 A-9 B-26
Output 10 A-10 B-27
Output 11 A-11 B-28
Output 12 A-12 B-29
Output 13 A-13 B-30
Output 14 A-14 B-31
Output 15 A-15 B-32
-V DC C-34 and C-51 (1794-TB2). Power Terminals are internally connected in the terminal
base unit.
C-34...C-51 (1794-TB3, 1794-TB3S). Power terminals are internally connected in the
terminal base unit.
Common B-16...B-33. Common terminals are internally connected in the terminal base unit.

FLEX I/O Digital Input and Output Modules with Diagnostics 11
Publication 1794-IN096D-EN-P - June 2018
Diagnostics
See configuration information below for location of diagnostic bits.
Note: Each unused sensor port requires a dummy resistor to mask the channel diagnostic
function.
Diagnostic Functions for the 1794-IB16D
Ext.
Power
Wiring Input
Status
Channel
LED
Status
Open
Wire
Error Bit
Short
Error Bit
Rev.
Error Bit
Module
Error
Bit/LED
OFF Open Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Short Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Normal Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
ON Open Off RED 1001/RED
On RED/YEL 1001/RED
Short Off RED 0 101/RED
On RED/YEL 0 101/RED
Normal Off Off 0 0 0 0/OFF
On YEL 0 0 0 0/OFF
REV Open Off Off 0 0 11/RED
On Off 0 0 11/RED
Short Off Off 0 0 11/RED
On Off 0 0 11/RED
Normal Off Off 0 0 11/RED
On Off 0 0 11/RED
The module monitors each sensor-power port for current and voltage. It turns on the channel red LED and
sets (1) the error bit when 1) the module detects a short circuit (no voltage at the sensor-port), and 2) the
module detects an open wire ( no current at the sensor-port).

12 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
Diagnostic Functions for the 1794-OB16D
Ext.
Power
Wiring Input
Status
Channel
LED
Status
Open
Wire
Error Bit
Short
Error Bit
Rev.
Error Bit
Module
Error
Bit/LED
OFF Open Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Short Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Normal Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
ON Open Off RED 1001/RED
On YEL 0 0 0 0/OFF
Short Off Off 0 0 0 0/OFF
On RED 0 101/RED
Normal Off Off 0 0 0 0/OFF
On YEL 0 0 0 0/OFF
REV Open Off Off 0 0 11/RED
On Off 0 0 11/RED
Short Off Off 0 0 11/RED
On Off 0 0 11/RED
Normal Off Off 0 0 11/RED
On Off 0 0 11/RED
The module monitors each output channel. It turns on the channel red LED and sets (1) the error bit when
1) the module detects a short circuit (the output signal is active at a channel and the corresponding output
voltage is low), and 2) the module detects an open wire (the output signal is inactive at a channel and the
corresponding output voltage is high).

FLEX I/O Digital Input and Output Modules with Diagnostics 13
Publication 1794-IN096D-EN-P - June 2018
Sensor Diagram for the 1794-IB16D Module
Sensor Diagram for the 1794-OB16D Module
3-Wire
Sensor
External
Power
Supply
1794-IB16D
3-Wire
Sensor
2-Wire
Sensor
External
Power
Supply
1794-IB16D
2-Wire
Sensor
3-Wire
Sensor
External
Power
Supply
1794-IB16D
Dummy
Resistor
External
Power
Supply
1794-IB16D
Shunt
Resistor
Shunt
Resistor
Sensor-power lines -
Detect open wire
Detect short circuit
Sensor-power lines -
Detect open wire
3-Wire
Sensor
External
Power
Supply
1794-IB16D
3-Wire
Sensor
2-Wire
Sensor
External
Power
Supply
1794-IB16D
2-Wire
Sensor
3-Wire
Sensor
External
Power
Supply
1794-IB16D
Dummy
Resistor
External
Power
Supply
1794-IB16D
Shunt
Resistor
Shunt
Resistor
Sensor-power lines -
Detect open wire
Detect short circuit
Sensor-power lines -
Detect open wire
Unused input port -
Dummy resistor needed or
Fault LED remains lighted.
20kΩ, ≥1/8W
20kΩ, ≥1/8W
+
_
+
_
+
_
+
_
20kΩ, ≥1/8W
Load
External
Power
Supply
1794-OB16D
Dummy
Resistor
Unused output port -
Dummy resistor needed or
Fault LED remains lighted.
10kΩ, ≥1/8W
+
_

14 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
Configuration
Configuring Your 1794-IB16D Input Module
Configure your input module by setting bits in the configuration word (word 3). This
module is compatible with the Remote I/O network with 1794-ASB series E or later,
DeviceNet network, and the ControlNet network. Note: You must use the Module
Connection when used in a ControlNet system
Image Table Memory Map for the 1794-IB16D Module
Dec 1514131211109876543210
Oct 17161514131211107 6 5 4 3 2 1 0
Read1 I15I14I13I12I11I10I9I8I7I6I5I4I3I2I1I0
Read 2 Read Diagnostic Status
Write 3 Not Used Input Filter FT
0...15
Not Used
Where
Diagnostic
Status
I = Input status
FT = Filter Time
Bit 00 = Module error;
Bit 01 = External power reverse polarity error;
Bit 02 = Sensor power short error;
Bit 03 = Sensor power open wire error
At the end of its life, this equipment should be collected separately from any
unsorted municipal waste.

FLEX I/O Digital Input and Output Modules with Diagnostics 15
Publication 1794-IN096D-EN-P - June 2018
Setting the Input Filter Time
To set the input filter time, set the associated bits in the output image (complementary
word) for the module.
Configuring Your 1794-OB16D Output Module
Configure your output module by setting bits in the configuration word (word 3). This
module is compatibility with the Remote I/O network, with 1794-ASB series D or later,
Input Filter Time
Bits Description Filter Time
10 09 08 Filter Time for inputs 0...15 Off to On /
On to Off
000FilterTime0(Default) 0.25ms
001FilterTime1 0.5ms
010FilterTime2 1ms
011FilterTime3 2ms
101FilterTime4 4ms
101FilterTime5 8ms
110FilterTime6 16ms
111FilterTime7 32ms
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1794-IB16D
FT = 0-15
FLL
I:000
00
Fill File
Source
Destination
Length
#O:010
1
Write FT to complement
of input module.
Write filter time on system startup.
O:010
Dec.
12 11 10 9 8 7 6 5
1= 5 Octal or 5 Decimal
01
1794-IB16D

16 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
DeviceNet network, and the ControlNet network. Note: You can use the Module
Connection or Rack Connection when used in a ControlNet system.
Specifications
Image Table Memory Map for the 1794-OB16D Module
Dec 1514131211109876543210
Oct 17161514131211107 6 5 4 3 2 1 0
Read 1 Not used Read Diagnostic Status
Write2 O15O14O13O12O11O10O9O8O7O6O5O4O3O2O1O0
Where
Diagnostic
Status
O = Output
Bit 00 = Module error;
Bit 01 = External power reverse polarity error;
Bit 02 = Output short error;
Bit 03 = Output open wire error
Specifications – 16 Input Module w/ Diagnostics, 1794-IB16D
Meets IEC 3 24V DC input specifications
Attribute Value
Number of inputs 16, current, sinking
Recommended terminal base unit 1794-TB32, 1794-TB32S, 1794-TB62DS, 1794-TB62EXD4X15
On-state voltage, min 10V DC
On-state voltage, nom 24V DC
On-state voltage, max 31.2V DC
On-state current, min 2.0 mA
On-state current, max 1.5 mA
Off-state voltage, max 5.0V DC
Off-state current, max 1.5 mA
Nominal input impedance 3.1 kΩ
Isolation voltage 50V (continuous), Basic Insulation Type
Type tested @ 2121V DC for 2 s, between field side and system
No isolation between individual channels
Input filter time(1)
Off to On
On to Off Refer to Setting the Input Filter Time table.

FLEX I/O Digital Input and Output Modules with Diagnostics 17
Publication 1794-IN096D-EN-P - June 2018
Flexbus current 30 mA @ 5V DC
Power dissipation, max 8.5 W @ 31.2V DC
Thermal dissipation, max 29 BTU/hr @ 31.2V DC
Sensor power, voltage drop, max 2.2V DC
Sensor power, current, max 50 mA
Sensor power line, short detect circuit,
min
1.0 A (in 10 s)
Sensor power line, open wire detect,
max
50 μA
Detect reverse polarity voltage Minimum 10V: Module must detect if the reverse polarity
external power supply voltage is greater than the value.
(1) Input off-to-on filter time is the time from a valid input signal to recognition by the module. Input on-to-off filter time is
time from the input signal dropping below the valid level to recognition by the module.
Specifications – 16 Output Module w/ Diagnostics, 1794-OB16D
Attribute Value
Number of outputs 16, current, sourcing
Recommended terminal base unit 1794-TB2, 1794-TB3, 1794-TB3S
Output voltage, min 10V DC
Output voltage, nom 24V DC
Output voltage, max 31.2V DC
Output current rating 8.0 A (16 outputs @ 0.5 A)
On-state current, min 1.0 mA per channel
On-state current, max 500 mA per channel
Surge current 2 A for 50 ms each, repeatable every 2 seconds
Off-state leakage, max 0.5 mA
Isolation voltage 50V (continuous), Basic Insulation Type
Type tested at 850V DC for 60 s, between field side and system
No isolation between individual channels
Output signal delay(1)
Off to On
On to Off
0.5 ms
0.5 ms
Specifications – 16 Input Module w/ Diagnostics, 1794-IB16D
Meets IEC 3 24V DC input specifications
Attribute Value

18 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
FlexBus current 60 mA @ 5V DC
Power dissipation, max 4.8 W @ 31.2V DC
Thermal dissipation, max 16.4 BTU/hr @ 31.2V DC
Short circuit protect and detection Thermal shutdown (auto reset)
Detection condition: when external power active, output signal
active, and output port voltage less than 2V.
Open wire detect off-state leakage
current
0.1 mA – When external power active and output signal inactive.
Detect reverse polarity voltage Minimum 10V: Module must detect if the reverse polarity
external power supply voltage is greater than the value.
(1) Delay time is the time from the receipt of an output on or off command to the output actually turning on or off.
General Specifications
Attribute Value
Terminal base screw torque Determined by installed terminal base
Dimensions, approx. (H x W x D) 45.7 x 94 x 53.3 mm (1.8 x 3.7 x 2.1 in.) – 1794-IB16D
94 x 94 x 91 mm (3.7 x 3.7 x 3.6 in.) – 1794-OB16D
Weight, approx. 90 g (3.17 oz.) – 1794-IB16D
95 g (3.35 oz.) – 1794-OB16D
Indicators (field side) 16 yellow ON/OFF status indicators
16 red diagnostic status indicators
1 red module fault indicator
External DC power supply voltage, nom 24V DC
External DC power voltage range 10...31.2V DC (includes 5% AC ripple)
North American temp code T3C
Keyswitch position 2
Enclosure type rating None (open-style)
Wire size Determined by installed terminal base
Wiring category(1) 2 - on signal ports
(1) Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1.
Specifications – 16 Output Module w/ Diagnostics, 1794-OB16D
Attribute Value

FLEX I/O Digital Input and Output Modules with Diagnostics 19
Publication 1794-IN096D-EN-P - June 2018
Environmental Specifications
Attribute Value
Operating temperature IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
0 °C < Ta < +55 °C (+32 °F < Ta < +131 °F)
Temperature, surrounding air,
max.
55 °C (131 °F)
Storage temperature IEC 60068-2-1 (Test Ab, Unpackaged Non-operating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Non-operating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Non-operating Thermal Shock):
-40…85 °C (-40…185 °F)
Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):
5…95% non-condensing
Vibration IEC60068-2-6 (Test Fc, Operating):
5 g @ 10...500 Hz
Shock, operating IEC60068-2-27 (Test Ea, Unpackaged shock):
30 g
Shock, nonoperating IEC60068-2-27 (Test Ea, Unpackaged shock):
50 g
Emissions CISPR 11:
Group 1, Class A (with appropriate enclosure)
ESD immunity IEC 61000-4-2:
6 kV contact discharges
8 kV air discharges
Radiated RF immunity 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
1V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
EFT/B immunity IEC 61000-4-4:
±2 kV @ 5 kHz on power ports
±2 kV @ 5 kHz on signal ports
Surge transient immunity IEC 61000-4-5:
±1 kV line-line(DM) and ±2 kV line-earth(CM) on signal ports
Conducted RF immunity IEC 61000-4-6:
10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz

20 FLEX I/O Digital Input and Output Modules with Diagnostics
Publication 1794-IN096D-EN-P - June 2018
Certifications
Certifications (when
product is marked)(1)
Value
c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada.
See UL File E322657.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations,
certified for U.S. and Canada. See UL File E334470.
CE European Union 2014/30/EU EMC Directive, compliant with:
EN 61131-2; Programmable Controllers (Clause 11)
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
European Union 2011/65/EU RoHS, compliant with:
EN 50581; Technical documentation
KC Korean Registration of Broadcasting and Communications Equipment,
compliant with: Article 58-2 of Radio Waves Act, Clause 3
EAC Russian Customs Union TR CU 020/2011 EMC Technical Regulation
RCM Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
(1) See the Product Certification link at http://www.rockwellautomation.com/global/certification/overview.page for
Declarations of Conformity, Certificates, and other certification details.