Rockwell Automation Allen-Bradley GuardPLC 1753-IB20XOB8 User manual

Installation Instructions
GuardPLC Digital Input/Output
Module
Catalog Number 1753-IB20XOB8
Topic Page
Important User Information 2
About the Module 3
General Safety 3
Install the Module 4
Mount the Module 5
Ground the Module 5
Wire the Module 6
Make Connections for Safety-related
Communication 12
Reset Push Button 12
Status Indicators 13
Specifications 14
Additional Resources 18

2GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
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.
SHOCK HAZARD: Labels may be on or inside the equipment, for example,
drive or motor, to alert people that dangerous voltage may be present.
WARNING: Labels may be on or inside the equipment, for example, drive or
motor, to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and
understanding of the product.

GuardPLC Digital Input/Output Module 3
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
About the Module
The 1753-IB20XOB8 digital input/output module is a 28-channel (20 inputs/8 outputs)
module for use with GuardPLC controllers.
General Safety
Preventing Electrostatic Discharge
ATTENTION: Personnel responsible for the application of safety-related
programmable electronic systems (PES) shall be aware of the safety
requirements in the application of the system and shall be trained in using the
system.
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 static potential.
•Wear an approved wrist-strap grounding device.
•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.
Digital Outputs
Digital Inputs
Voltage Supply Connection
Ethernet Ports (on bottom of controller)

4GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Environment and Enclosure
Install the Module
Follow these steps to install the module.
1. Mount the module to a DIN rail.
2. Ground the module.
3. Wire the module.
4. Make connections for safety-related communication.
This publication describes these steps in detail.
ATTENTION: 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 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties
with electromagnetic compatibility in residential and other environments due
to conducted as well as radiated disturbances.
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 enclosure must have
suitable flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
non-metallic. 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.
In addition to this publication, see:
•Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for additional installation requirements.
•NEMA 250 and IEC 60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure.

GuardPLC Digital Input/Output Module 5
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Mount the Module
The module cannot be panel-mounted. Mount the module to a DIN rail by following the steps
below.
1. Hook the top slot over the DIN rail.
2. Insert a flathead screwdriver into the gap
between the housing and the latch and pull
the latch downward.
3. Hold the latch down as you push the housing
back onto the DIN rail.
4. Release the latch to lock the module onto the
rail.
Ground the Module
The module is functionally grounded through its DIN rail connection. A protective earth
ground connection is required and is provided through a separate grounding screw on the upper
left of the housing and marked with the grounding symbol .
You must also provide an acceptable grounding path for each device in your application. For
more information on proper grounding guidelines, refer to the Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1.
IMPORTANT For effective cooling, mount the module following these guidelines.
•Mount the module horizontally.
•Provide a gap of at least 100 mm (3.94 in.) above and below the module.
•Select a location where air flows freely or use an additional fan.
•Do not mount the module over a heating device.
TIP To remove the module from the DIN rail, insert a flathead screwdriver into
the gap between the housing and the latch and pull the latch downward as
you lift the module off of the rail.
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 (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.
DIN Rail
(1) Top Slot
Latch
(3)
(2)

6GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Wire the Module
The following sections describe how to connect the voltage supply and connect the inputs and
outputs.
Connect the Voltage Supply
To comply with CE Low Voltage Directives (LVD) and UL restrictions, you must use either a
Safety Extra Low Voltage (SELV), or a Protected Extra Low Voltage (PELV) power supply to
power this module. A SELV supply cannot exceed 30V rms, 42.4V peak, or 60V DC under
normal conditions and under single-fault conditions. A PELV supply has the same rating and is
connected to protected earth.
The supply voltage is connected via a 4-pin connector that accommodates wire sizes up to
2.5 mm2(14 AWG). You need to connect only one wire to L+ and one wire to L-. Both L+ and
L- terminals are internally connected, so you can daisy-chain 24V DC power from the module to
other devices in the panel by using the remaining terminal.
IMPORTANT Protect the module with a slow-blow fuse.
IMPORTANT The module can draw up to 8 A. The controllers need 0.4 A to operate. Up to
7.6 A can be used to source voltage power for inputs and outputs connected
to the module.
ATTENTION: Do not reverse the L+ and L- terminals or damage to the module
will result. There is no reverse polarity protection.

GuardPLC Digital Input/Output Module 7
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Safety-related Digital Inputs
The module has 20 digital inputs (DI1…DI20) whose status is indicated via status indicators.
LS+ is a voltage source that provides 24V DC for a group of four dry contact inputs. There are
five groups on the module.
If devices require 24V DC to operate and use the same power source as the module, then wire the
outputs of the device directly to inputs on the module.
L-L- L+ L+
1LS+ LS+ LS+ LS+ LS+L-
D1
234
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24
1L- L-DO 2 3 4
(2A)
123456
123456
7L- L-DO 8 9 10
(2A)
789101112
789101112
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
24V DC
RUN
24 V DC
PROG
ERROR
FAULT
FORCE
BL
OSL
GuardPLC Ethernet
10/100 BaseT
1(—) 2
(—)
1753-IB20OXB8
20 DC Inputs
8 DC Outputs
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
L-L- L+ L+
24V DC
24VDC
Power
Supply
COM
+
Connection of Voltage
Supply to Input Device
L-L- L+ L+
1LS+ LS+ LS+ LS+ LS+L-
D1
234
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24
1L- L-DO 2 3 4
(2A)
123456
123456
7L- L-DO 8 9 10
(2A)
789101112
789101112
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
24V DC
RUN
24 V DC
PROG
ERROR
FAULT
FORCE
BL
OSL
GuardPLC Ethernet
10/100 BaseT
1
(—)
2
(—)
1753-IB20OXB8
20 DC Inputs
8 DC Outputs
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
L-L- L+ L+
24V DC
COM
24VDC
Power
Supply
COM
+
+
Light Curtain
(or any Safety Input)
Connection of Voltage Supply
to Input Device

8GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Devices with their own dedicated power supply can also be connected. Connect the reference
pole of the external power supply to the L- reference pole of the input.
The safe state of an input is indicated by a 0 signal being passed to the user program. If the test
routines detect a fault in the digital inputs, a 0 signal is processed in the user program for the
defective channel. When a fault occurs, the inputs are switched off (0) and the FAULT indicator
is activated.
Follow the closed-circuit principle for external wiring when connecting sensors. To create a safe
state in the event of a fault, the input signals revert to the de-energized state (0). Although the
external line is not monitored, a wire break is interpreted as a safe 0 signal.
Digital Input Terminals
Terminals accommodate wires up to 1.5 mm2(16 AWG). See the terminal torque specifications
on page 14. Digital inputs (DI) are connected to these terminals.
Terminal Number Designation Function
13 LS+ Sensor supply for inputs 1…4
14 1 Digital input 1
15 2 Digital input 2
16 3 Digital input 3
17 4 Digital input 4
18 L- Reference pole
L-L- L+ L+
1LS+ LS+ LS+ LS+ LS+L-
D1
234
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24
1L- L-DO 2 3 4
(2A)
123456
123456
7L- L-DO 8 9 10
(2A)
789101112
789101112
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
24V DC
RUN
24 V DC
PROG
ERROR
FAULT
FORCE
BL
OSL
GuardPLC Ethernet
10/100 BaseT
1
(—)
2
(—)
1753-IB20OXB8
20 DC Inputs
8 DC Outputs
15
L-L- L+ L+
24V DC
24VDC
Power
Supply
COMCOM
+
24VDC
Power
Supply
COM
+
+
Light Curtain
(or any Safety Input)
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
Connection of Devices with Dedicated
Power Supplies
1LS+- LS+LS+LS+LS+L-
DI
234
13 14 15 16 17 18
5L-
DI
678
19 20 21 22 23 24
9L-
DI
10 11 12
25 26 27 28 29 30
13 L-
DI
14 15 16
31 32 33 34 35 36
17 L-
DI
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 17 18 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

GuardPLC Digital Input/Output Module 9
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
LS+, not L+, should be used for short-circuit protection. Each LS+ features individual
short-circuit and EMC protection that make it important to use LS+ for only its four related
inputs.
19 LS+ Sensor supply for inputs 5…8
20 5 Digital input 5
21 6 Digital input 6
22 7 Digital input 7
23 8 Digital input 8
24 L- Reference pole
25 LS+ Sensor supply for inputs 9…12
26 9 Digital input 9
27 10 Digital input 10
28 11 Digital input 11
29 12 Digital input 12
30 L- Reference pole
31 LS+ Sensor supply for inputs 13…16
32 13 Digital input 13
33 14 Digital input 14
34 15 Digital input 15
35 16 Digital input 16
36 L- Reference pole
37 LS+ Sensor supply for inputs 17…20
38 17 Digital input 17
39 18 Digital input 18
40 19 Digital input 19
41 20 Digital input 20
42 L- Reference pole
Terminal Number Designation Function

10 GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Line Control
Line control is a short-circuit and line-break monitoring system, for example, E-stop inputs that
can be configured for the GuardPLC system. Up to eight digital outputs (DO1…DO8) can be
configured as pulsed outputs. The example below shows two pulse outputs connected to the
digital inputs (DI) of the same system. As a result, the connections to the digital inputs (DI) are
monitored.
Inputs are set to 0, a fault code is generated, and the FAULT status indicator is on when:
•a short-circuit occurs between two parallel connections.
•two connections are reversed.
•earth fault occurs on one of the lines (only with earthed reference pole).
•a line breaks or one of the contacts opens (that is, when one of the E-stop off switches is
pressed in the example above).
Safety-related Digital Outputs
The module has eight digital outputs (DO1…DO8) whose status is indicated via status
indicators.
An output is in a safe state when it is de-energized. If a fault occurs, all outputs are turned off.
Outputs 1…3 and 5…7 can have a load of 0.5 A at an ambient temperature of 60 °C (140 °F).
Outputs 4 and 8 can each have a load of 1 A at an ambient temperature of 60 °C (140 °F), or up
to 2 A at an ambient temperature of 50 °C (122 °F).
With an overload, one or all of the outputs are turned off. When the overload is eliminated, the
outputs are activated again according to the specified value.
Although the external line of an output is not monitored, a short-circuit will be indicated.
IMPORTANT For information on how to configure inputs and outputs for line control, see the
GuardPLC Controller Systems User Manual, publication 1753-UM001.
Emergency OFF 1 Emergency OFF 2
DO 1 2
DI 1 2 DI 3 4

GuardPLC Digital Input/Output Module 11
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Digital Output Terminals
Terminals accommodate wires up to 1.5 mm2(16 AWG). See the terminal torque specifications
on page 14. Digital outputs (DO) are connected to these terminals.
Example: Connecting Actuators to the Outputs
Terminal Number Designation Function
1 L- Reference pole
2 1 Digital output 1
3 2 Digital output 2
4 3 Digital output 3
5 4 Digital output 4
6 L- Reference pole
7 L- Reference pole
8 5 Digital output 5
9 6 Digital output 6
10 7 Digital output 7
11 8 Digital output 8
12 L- Reference pole
TIP Inductive loads can be connected without a protection diode on the load.
However, Rockwell Automation strongly recommends that a protection
diode be fitted directly to the load to suppress any interference voltage. A
1N4004 diode is recommended.
ATTENTION: Pulse outputs may not be used as safety-related outputs.
123456
1234
1L- L-DO 2
(2A)
34
56
789101112
78910
5L- L-DO 6
(2A)
7 8
11 12
DO 1 DO 2 DO 3 DO 4 L- L-

12 GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Make Connections for Safety-related Communication
The module has two 10/100BaseT, RJ45 connectors on the bottom of the unit, that provide
communication to the GuardPLC controller via GuardPLC Ethernet protocol. Because this is
an Ethernet switch, you can daisy-chain connections from the GuardPLC module to other
distributed I/O modules. The switch is auto-detect. Either crossover or straight-through cabling
can be used. Star or line configurations are available. Make sure that a network loop is not
generated. Data packets must be able to reach a node only via a single path.
The media access control (MAC) address of the module can be found on the label positioned
over both lower RJ45 connections.
A transparent label shipped with the module can be used to note the IP address and
system ID (SRS).
Reset Push Button
The module is equipped with a reset push button. Reset via the push button is necessary under
the following conditions.
•You forget the password to go online via the programming software.
•You are unable to determine the IP address and SRS of the controller.
The push button is accessible through a small round hole at the top of the housing,
approximately 4…5 cm (1.6…2.0 in.) from the left rim and recessed approximately 9.5 mm
(0.375 in.).
To reset, press and hold the push button for 20 seconds while rebooting the device by cycling
power. Pressing the Reset push button during operation has no affect.
With activation of the reset button:
•all accounts are deleted except for the default account.
•IP Address and System ID (SRS) are set to their default values.
The next time you cycle power, these settings will be restored to the last values stored into
nonvolatile memory. This means that either the settings prior to the reset will be restored, or if
any settings were changed after the reset, those new settings will still be in effect.
IMPORTANT If you attach the label to the module, make sure you do not cover any of the
ventilation slots.
IMPORTANT Activate the reset pushbutton using an insulated pin to prevent short-circuits.

GuardPLC Digital Input/Output Module 13
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Status Indicators
Indicator State Description
24V DC On 24V DC operating voltage present.
Off No operating voltage.
RUN On This is the normal status of the controller.
A routine, which has been loaded into the controller, is executed.
The controller processes input and output signals, carries out communication, and
performs hardware and software tests.
Flashing The controller is in STOP mode and is not executing a routine.
All system outputs are reset.
STOP mode can be triggered by setting the Emergency stop system variable to TRUE
in the routine, or by direct command from the programming software.
Off The controller is in ERROR_STOP mode (see ERROR).
ERROR On •A hardware error has been detected by the controller. The controller goes to
ERROR_STOP mode and the execution of the routine is halted. Hardware errors
are errors in the controller, errors in one or more of the digital input and output
modules, or errors in the counters.
•A software error in the operating system has been detected by the controller.
•The watchdog has reported an error due to exceeded cycle time.
All system outputs will be reset and the controller ceases all hardware and
software tests. The controller can only be restarted by a command from the
programming software.
Off No errors are detected.
PROGress On The upload of a new controller configuration is in progress.
Flashing The upload of a new operating system into the nonvolatile ROM is in progress.
Off No upload of controller configuration or operating system in progress.
FORCE On The controller is executing a routine (RUN) and FORCE mode is activated by the user.
Flashing The controller is in STOP mode, but Forcing has been initiated and will be activated
when the controller is started.
Off Forcing is OFF.
FAULT On •The routine (logic) has caused an error.
•The controller configuration is faulty.
•The upload of a new operating system was not successful and the operating
system is corrupted.
Flashing An error has occurred during a nonvolatile ROM write cycle.
One or more I/O errors have occurred.
Off None of the above errors has occurred.
OSL Flashing Emergency Operating System Loader is active.
BL Flashing Boot Loader unable to load operating system or unable to start COMM operating
system loader.
Module status can be interrogated through the programming software. For more information, refer to the
GuardPLC System User Manual, publication 1753-UM001.

14 GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Specifications
Technical Specifications – 1753-IB20XOB8 Module
Attribute 1753-IB20XOB8
Interfaces: GuardPLC
Ethernet 2 x RJ45, 10/100BaseT (with 100 Mbit/s) with integrated switch
Operating voltage 24V DC, -15…20%, wss 15% from a power supply with protective separation,
conforming to IEC 61131-2 requirements
Isolation voltage 50V (continuous), Basic Insulation Type, I/O to Ethernet and Ethernet to DC
power
Wiring category(1) Category 2 on communication ports, signal ports, and power ports
Wire size •I/O – 0.13…1.3 mm2(26…16 AWG) solid or stranded copper wire rated at
75 °C (167 °F) or greater with 1.2 mm (3/64 in.) insulation max
•Power – 0.33…2.1 mm2 (22…14 AWG) solid or stranded copper wire
rated at 75 °C (167 °F) or greater with 1.2 mm (3/64 in.) insulation max
•Ethernet – RJ45 connector according to IEC 60603-7, 2 or 4 pair Category
5e minimum cable according to TIA 568-B.1, or Category 5 cable according
to ISO/IEC 24702
Wire type Shielded on Ethernet
Terminal Block Torque 0.51 N•m (4.5 lb•in)
Fuse (external) 24V DC power: 10 A (time-lag)
Pilot Duty Rating Not rated
Response time ≥ 10 ms
Battery backup None
Current consumption 8.0 A max (with max load), idle current 0.4 A @24V
Enclosure type rating Meets IP20
Width, approx. 207 mm (8.14 in.) including housing screws
Height, approx. 114 mm (4.49 in.) including latch
Depth, approx. 66 mm (2.60 in.) including grounding bolt
Weight, approx. 1.0 kg (2.2 lb)
Digital Inputs
Number of inputs 20 (not electrically isolated)
1 Signal Voltage: 15…30V DC, Current consumption: ≥2 mA @ 15V
0 Signal Voltage: 5V DC max, Current consumption: 1.5 mA max (1 mA @ 5V)
Switching point Typically 7.5V
Sensor supply 5 x 20V / 100 mA @ 24V short-circuit proof

GuardPLC Digital Input/Output Module 15
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Digital Outputs
Number of outputs 8 (not electrically isolated)
Output voltage range ≥L+ minus 2V
Output current channels 1…3 and 5…7: 0.5 A @ 60 °C (140 °F)
channels 4 and 8: 1 A @60 °C (140 °F), 2 A @ 50 °C (122 °F)
Surge current per channel 1 A for 10 ms @ 1Hz (channels 1…3 and 5…7)
4 A for 10 ms @ 1Hz (channels 4 and 8)
Current load, min 2 mA per channel
Internal voltage drop 2V max @ 2 A
Leakage current (with 0
signal) 1 mA max @ 2V
Total output current 7 A max with exceeding shut down of all outputs with cyclic reconnecting
Response overload Shut down of the concerned output with cyclic reconnecting
(1) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
Technical Specifications – 1753-IB20XOB8 Module

16 GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Environmental Specifications – 1753-IB20XOB8 Module
Attribute 1753-L28BBB-M, 1753-L28BBB-P
Temperature, nonoperating
•IEC 60068-2-1 (Test Ab, Unpackaged nonoperating cold)
•IEC 60068-2-2 (Test Bb, Unpackaged nonoperating dry heat)
•IEC 60068-2-14 (Test Na, Unpackaged nonoperating thermal
shock)
-40…85 °C (-40…185 °F)
Temperature, operating
•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…60 °C (32…140 °F)
Temperature, surrounding air 60 °C (140 °F)
Vibration
•IEC 60068-2-6 (Test Fc, operating)
1 g @ 10…150 Hz
Shock, operating
•IEC 60068-2-27 (Test Ea, unpackaged shock)
15 g
Relative humidity
•IEC 60068-2-30 (Test Db, unpackaged damp heat)
10…95% noncondensing
Emissions CISPR 11: Group 1, Class A
ESD Immunity
•IEC 61000-4-2
•6 kV contact discharges
•8 kV air discharges
Radiated RF Immunity
•IEC 61000-4-3
•10V/m with 1kHz sine-wave 80% AM
from 80 MHz…2000 MHz
•1 V/m with 1 kHz sine-wave 80% AM
from 2000…2700 MHz
EFT/B Immunity
•IEC 61000-4-4
•±2 kV @ 5 kHz on DC power ports
•±1 kV @ 5 kHz on signal ports
•±1 kV @ 5 kHz on communication ports
Surge Transient Immunity
•IEC 61000-4-5
•±500V line-line (DM) and ±500V
line-earth (CM) on DC power ports
•±1 kV line-earth (CM) on signal ports
•±1 kV line-earth (CM) on communication
ports
Conducted RF Immunity
•IEC 61000-4-6
10V rms with 1 kHz sine-wave 80% AM
from 150 kHz…80 MHz
Damped Oscillatory Wave Immunity
•IEC 61000-4-12
•±1 kV line-earth (CM) on signal ports
•±1 kV line-earth (CM) on power ports

GuardPLC Digital Input/Output Module 17
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Certifications
Certification (when
product is marked)(1)
(1) See the Product Certification link at http://www.ab.com for Declarations of Conformity, Certificates, and other certification
details.
1753-IB20XOB8
c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada. See UL File
E65584.
CE European Union 2004/108/EC EMC Directive, compliant with:
•EN 61326-1 Meas./Control/Lab., Industrial Requirements
•EN 61000-6.2; Industrial Immunity
•EN 61000-6-4; Industrial Emissions
•EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
C-Tick Australian Radiocommunications Act, compliant with: AS/NZS CISPR 11;
Industrial Emissions
Functional Safety Certified by TÜV(2): up to and including SIL 3 according to IEC 61508 and PLe
(Cat. 4) according to ISO 13849-1
(2) When used with specified firmware revisions.

18 GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Additional Resources
The table below provides a listing of publications that contain important information about
GuardPLC systems.
You can view or download publications at http://www.rockwellautomation.com/literature. To
order paper copies of technical documentation, contact your local Rockwell Automation
distributor or sales representative.
Resource Description
GuardPLC Controller Systems Safety Reference
Manual, publication 1753-RM002 Detailed information regarding the safety certification of the
GuardPLC System
GuardPLC Controller Systems User Manual,
publication 1753-UM001 Detailed information on installing, wiring, configuring,
operating, maintaining, and troubleshooting GuardPLC
systems
Using RSLogix Guard PLUS! Software with
GuardPLC Controllers Programming Manual,
publication 1753-PM001
Detailed information on programming your GuardPLC system
using RSLogix Guard PLUS! software
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
General guidelines for installing a Rockwell Automation
industrial system

GuardPLC Digital Input/Output Module 19
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010

Rockwell Otomasyon Ticaret A.Ş., Kar Plaza İş Merkezi E Blok Kat:6 34752 İçerenköy, İstanbul, Tel: [phone]
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010 PN-77078
Supersedes Publication 1753-IN003B-EN-P - March 2004 Copyright © 2010 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you in using its products. At
http://www.rockwellautomation.com/support/, you can find technical manuals, a knowledge base of FAQs,
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/.
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.
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.
Documentation Feedback
Your comments will help us serve your documentation needs better. If you have any suggestions on how to
improve this document, complete this form, publication RA-DU002, available at
http://literature.rockwellautomation.com.
United States or Canada 1.440.646.3434
Outside United States
or Canada
Use the Worldwide Locator at
http://www.rockwellautomation.com/support/americas/phone_en.html, or contact
your local Rockwell Automation representative.
United States Contact your distributor. You must provide a Customer Support case number (call the
phone number above to obtain one) to your distributor to complete the return process.
Outside United States Please contact your local Rockwell Automation representative for the return
procedure.
Allen-Bradley, Rockwell Software, Rockwell Automation, and GuardPLC are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.