Rockwell Automation 1769-IF4FXOF2F User Manual
Compact I/O Combination Fast Analog I/O Module
(Catalog Number
User Manual
1769-IF4FXOF2F
)
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
from your local Rockwell Automation sales office or online at http://literature.rockwellautomation.com
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.
available
) describes
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.
IMPORTANT
ATTENTION
Identifies information that is critical for successful application and understanding of the product.
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 consequence
SHOCK HAZARD
Labels may be on or inside the equipment, for example, a drive or motor, to alert people that
dangerous voltage may be present.
BURN HAZARD
Labels may be on or inside the equipment, for example, a drive or motor, to alert people that
surfaces may reach dangerous temperatures.
Rockwell Automation, Allen-Bradley, TechConnect, CompactLogix, Compact I/O, MicroLogix, RSLogix 5000, RSLogix 500, RSNetWorx, RSNetWorx for DeviceNet, and RSLinx are trademarks of
Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Overview
Installation and Wiring
Table of Contents
Preface
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
About This Publication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Who Should Use This Publication . . . . . . . . . . . . . . . . . . . . . 7
Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Module Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hazardous Location Considerations . . . . . . . . . . . . . . . . 14
Prevent Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . 14
Remove Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Reduce Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Protecting the Circuit Board from Contamination. . . . . . . 15
Assemble the Compact I/O System . . . . . . . . . . . . . . . . . . . 16
Mounting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Minimum Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mount to a Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mount to a DIN Rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Replace a Single Module Within a System . . . . . . . . . . . . . . 19
Grounding the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Effect of Transducer/Sensor and Cable Length Impedance
on Voltage Input and Output Accuracy. . . . . . . . . . . . . . 22
Label the Terminals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Remove the Finger-safe Terminal Block . . . . . . . . . . . . . . . . 25
Wire the Finger-safe Terminal Block . . . . . . . . . . . . . . . . . . 25
Wire Size and Terminal Screw Torque . . . . . . . . . . . . . . 26
Wire the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chapter 3
Module Data, Status, and Channel
Configuration
3Publication 1769-UM019A-EN-P - October 2008 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Module Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Input Image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Output Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table of Contents
Input Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Time Stamp Value (Word 4). . . . . . . . . . . . . . . . . . . . . . 36
General Input Status Bits (SI0…SI3) . . . . . . . . . . . . . . . . 36
Low Alarm Flag Bits (LI0 …LI3) . . . . . . . . . . . . . . . . . . . 37
High Alarm Flag Bits (HI0…HI3) . . . . . . . . . . . . . . . . . . 37
Over-range Flag Bits (OI0…OI3) . . . . . . . . . . . . . . . . . . 37
Under-range Flag Bits (UI0…UI13) . . . . . . . . . . . . . . . . . 37
General Output Status Bits (SO0 and SO1) . . . . . . . . . . . 38
High Clamp (over-range) Flag Bits (OO0 and OO1) . . . . 38
Low Clamp (under-range) Flag Bits (UO0 and UO1) . . . . 38
Output Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cancel Input Alarm Control Bits (CLL0…CLL3 and
CLH0…CLH3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cancel Output Clamp Flag Control Bits (CLO0…CLO1
and CHO0…CHO1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuration Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Input Channel Configuration . . . . . . . . . . . . . . . . . . . . . . . . 41
Enable/Disable Channel (EC) . . . . . . . . . . . . . . . . . . . . . 43
Input Filter Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Input Type/Range Selection . . . . . . . . . . . . . . . . . . . . . . 45
Input Data Selection Formats . . . . . . . . . . . . . . . . . . . . . 45
Real Time Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Time Stamping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Alarm Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Output Channel Configuration. . . . . . . . . . . . . . . . . . . . . . . 49
Enable/Disable Channel (EC) . . . . . . . . . . . . . . . . . . . . . 50
Program Mode (PM). . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Program Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fault Mode (FM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fault Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Program to Fault Enable (PFE) . . . . . . . . . . . . . . . . . . . . 52
Clamping (Limiting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Clamp High and Clamp Low Data Values . . . . . . . . . . . . 53
Output Ramping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Output Type/Range Selection. . . . . . . . . . . . . . . . . . . . . 55
Output Data Selection Formats . . . . . . . . . . . . . . . . . . . . 56
Chapter 4
Module Diagnostics and
Troubleshooting
4 Publication 1769-UM019A-EN-P - October 2008
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Power Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Activate Devices When Troubleshooting . . . . . . . . . . . . . 59
Stand Clear of the Machine. . . . . . . . . . . . . . . . . . . . . . . 60
Program Alteration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Safety Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table of Contents
Power Cycle Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Channel Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Out-of-range Detection . . . . . . . . . . . . . . . . . . . . . . . . . 61
Process Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . 61
Output Clamp Detection . . . . . . . . . . . . . . . . . . . . . . . . 61
Non-critical Versus Critical Module Errors. . . . . . . . . . . . . . . 61
Module Error Definition Table . . . . . . . . . . . . . . . . . . . . . . . 62
Module Error Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Extended Error Information Field . . . . . . . . . . . . . . . . . . 62
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Invalid Input Range Selected . . . . . . . . . . . . . . . . . . . . . 64
Invalid Input Format Selected. . . . . . . . . . . . . . . . . . . . . 65
Alarm Not Enabled. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Invalid Alarm Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Invalid Input Filter Selected . . . . . . . . . . . . . . . . . . . . . . 65
Invalid Output Range Selected . . . . . . . . . . . . . . . . . . . . 66
Invalid Output Format Selected . . . . . . . . . . . . . . . . . . . 66
Invalid Fault Value Selected . . . . . . . . . . . . . . . . . . . . . . 66
(1)
Invalid Program/Idle Value Selected
. . . . . . . . . . . . . . 66
Invalid Clamp Value Selected . . . . . . . . . . . . . . . . . . . . . 67
Invalid Ramp Rate Selected . . . . . . . . . . . . . . . . . . . . . . 67
Invalid Real Time Sample Value . . . . . . . . . . . . . . . . . . . 67
Module Inhibit Function . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Contacting Rockwell Automation . . . . . . . . . . . . . . . . . . . . . 68
Specifications
Module Addressing and
Configuration with MicroLogix
1500 Controller
Appendix A
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Input Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Output Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Appendix B
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Module Input Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Module Output Image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Module Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Configure Analog I/O Modules in a MicroLogix 1500
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Publication 1769-UM019A-EN-P - October 2008 5
Table of Contents
Configuration Using the RSLogix
5000 Generic Profile for
CompactLogix Controllers
Two’s Complement Binary
Numbers
Appendix C
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Add the Module to Your Project . . . . . . . . . . . . . . . . . . . . . 79
Configure Each I/O Module. . . . . . . . . . . . . . . . . . . . . . . . . 82
Appendix D
Positive Decimal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Negative Decimal Values. . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Glossary
Index
6 Publication 1769-UM019A-EN-P - October 2008
Preface
Introduction
About This Publication
Who Should Use This Publication
Read this preface to familiarize yourself with the rest of the manual.
Topic Page
About This Publication 7
Who Should Use This Publication 7
Additional Resources 8
This manual is a guide for using the Compact I/O Combination Fast
Analog I/O Module, catalog number 1769-IF4FXOF2F. It describes the
procedures you use to configure, operate, and troubleshoot your
module.
For detailed information on related topics like programming your
CompactLogix or MicroLogix controller, or DeviceNet adapter, or for
information on CompactLogix components, see the list of Additional
Resources on page 8.
Use this manual if you are responsible for designing, installing,
programming, or troubleshooting control systems that use Compact
I/O modules.
7Publication 1769-UM019A-EN-P - October 2008 7
Preface
Additional Resources
These documents contain additional information about control
systems that use Compact I/O modules.
Resource Description
MicroLogix 1500 User Manual, publication 1764-UM001
DeviceNet Adapter User Manual, publication 1769-UM001
CompactLogix System User Manual, publication 1769-UM007
CompactLogix Controllers User Manual, publication 1769-UM011
Compact I/O Selection Guide, publication 1769-SG002
MicroLogix Programmable Controllers Selection Guide,
publication 1761-SG001
Industrial Automation Wiring and Grounding Guidelines,
publication 1770-4.1
A user manual containing information on how to install, use, and
program your MicroLogix 1500 controller.
A user manual containing information on how to install and use your
1769-ADN DeviceNet adapter.
A user manual containing information on how to install, use, and
program your 1769-L20 and 1769-L30 CompactLogix controllers.
A user manual containing information on how to install, use, and
program your 1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, and
1769-L35E CompactLogix controllers.
An overview of 1769 Compact I/O modules.
An overview of the MicroLogix 1500 System, including the 1769
Compact I/O system.
In-depth information on grounding and wiring Allen-Bradley
programmable controllers.
You can view or download publications at
http://literature.rockwellautomation.com
technical documentation, contact your local Rockwell Automation
distributor or sales representative.
. To order paper copies of
8 Publication 1769-UM019A-EN-P - October 2008
Introduction
Overview
Topic Page
Module Description 9
System Overview 11
Module Operation 11
Chapter
1
Module Description
The module converts and digitally stores analog data for retrieval by
controllers, such as the CompactLogix or MicroLogix 1500 controllers.
The module also converts digital data from controllers to provide
analog output data. The module provides the following input and
output types and ranges.
Normal and Full Ranges
Signal Type Normal Operating Input Range Full Module Range
±10V DC ± 10.5V DC
1…5V DC 0.5…5.25V DC
Voltage
0…5V DC -0.5…5.25V DC
0…10V DC -0.5…10.5V DC
0…20 mA 0…21 mA
Current
4…20 mA 3.2…21 mA
The data can be configured as:
• engineering units.
• scaled-for-PID.
• percent range.
• raw/proportional data.
Module configuration is normally done via the controller’s
programming software. In addition, some controllers support
configuration via the user program. In either case, the module
configuration is stored in the memory of the controller. Refer to your
controller’s user manual for more information.
9Publication 1769-UM019A-EN-P - October 2008 9
Chapter 1 Overview
Hardware Features
5a
7a
1
OK
Analog
10a
10
10b
2a
DANGER
Do Not Remove RTB Under Power
Unless Area is Non-Hazardous
V in 0 +
V in 1+
V/I in 0-
V/I in 1-
I in 0 +
I in 1+
V in 2+
V in 3+
V/I in 2 -
V/I in 3-
I in 2+
I in 3 +
ANLG
Com
ANLG
Com
V out 0+
V out 1+
I out 0+
I out 1+
Ensure Adjacent
Bus Lever is Unlatched/Latched
Before/After
Removing/Inserting Module
1769-IF4FXOF2F
3
4
8a
2b
7a
OK
Analog
9
5b
6
7b
7b
8b
Item Description
1 Bus lever (with locking function)
2a Upper-panel mounting tab
2b Lower-panel mounting tab
3 Module status indicators
4 Module door with terminal identification label
5a Movable bus connector with female pins
5b Stationary bus connector with male pins
6 Nameplate label
7a Upper tongue-and-groove slots
7b Lower tongue-and-groove slots
8a Upper DIN-rail latch
8b Lower DIN-rail latch
9 Write-on label for user identification tags
10 Removable terminal block (RTB) with finger-safe cover
10a RTB retaining screw
10b RTB retaining screw
10 Publication 1769-UM019A-EN-P - October 2008
Overview Chapter 1
System Overview
The module communicates to the controller through the bus interface.
The module also receives 5 and 24V DC power through the bus
interface.
You can install as many analog modules as your power supply can
support. However, the modules may not be located more than eight
modules away from the system power supply.
Determine Power Supply Distance
Adapter
Compact I/O
or I/O Communication
CompactLogix Controll er
Compact I/O
Compact I/O
System Power Supply
Compact I/O
Compact I/O
1123432
End Cap
Compact I/O
Power Supply Distance
or
Module Operation
MicroLogix 1500 Controller
with Integrated System
Power Supply
Compact I/O
Compact I/O
1
234
Compact I/O
End Cap
Compact I/O
Power Supply Distance
When you cycle power, the module performs a check of its internal
circuits, memory, and basic functions. During this time, the
module-status OK indicator remains off. If no faults are found during
power-cycle diagnostics, the module-status OK indicator is turned on.
After power-cycle checks are complete, the module waits for valid
channel-configuration data. If an invalid configuration is detected, the
module generates a configuration error. Once a channel is properly
configured and enabled, the module begins its conversion process.
Each time an input channel is read, the converted analog data value is
tested for an over-range or under-range condition. In addition, the
module supports user-configured high and low alarm condition tests
for each input channel. If any of these conditions are detected, unique
bits are set in the input-channel status word.
Publication 1769-UM019A-EN-P - October 2008 11
Chapter 1 Overview
Each time a new output value is sent to the module, it is tested for an
over-range or under-range condition. In addition, the module
supports user-configured high and low output clamps for each output
channel. If any of these conditions are detected, unique bits are set in
the output-channel status word.
The channel status words are described in the Input Data File
on
page 36.
The controller uses two’s complement binary data when
communicating with the module. This typically occurs at the end of
the program scan or when commanded by the control program. If the
controller and the module determine that the bus data transfer was
made without error, the input data is used in your control program
and the output data is used by the module.
No field calibration is required.
12 Publication 1769-UM019A-EN-P - October 2008
Introduction
Installation and Wiring
Topic Page
General Considerations 13
Assemble the Compact I/O System 16
Mounting the Module 17
Replace a Single Module Within a System 19
Grounding the Module 20
System Wiring Guidelines 21
Label the Terminals 24
Remove the Finger-safe Terminal Block 25
Chapter
2
General Considerations
Wire the Finger-safe Terminal Block 25
Wire the Modules 27
The Compact I/O system is suitable for use in an industrial
environment when installed in accordance with these instructions.
Specifically, this equipment is intended for use in clean, dry
environments (Pollution degree 2
Over Voltage Category II
(2)
(IEC 60664-1).
(1)
) and to circuits not exceeding
(3)
(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
(2) Over Voltage Category II is the load level section of the electrical distribution system. At this level, transient
voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
13Publication 1769-UM019A-EN-P - October 2008 13
Chapter 2 Installation and Wiring
Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B,
C, D or nonhazardous locations only. The following attention
statement applies to use in hazardous locations.
ATTENTION
EXPLOSION HAZARD
• Substitution of components may impair suitability for Class I,
Division 2.
• Do not replace components or disconnect equipment unless
power has been switched off or the area is known to be
nonhazardous.
• Do not connect or disconnect components unless power has
been switched off or the area is known to be nonhazardous.
• This product must be installed in an enclosure.
• All wiring must comply with N.E.C. article 501-4(b).
Prevent Electrostatic Discharge
ATTENTION
Electrostatic discharge can damage integrated circuits or
semiconductors if you touch analog I/O module bus-connector pins
or the terminal block on the input module. Follow these guidelines
when you handle the module:
• Touch a grounded object to discharge static potential.
• Wear an approved wrist-strap grounding device.
• Do not touch the bus connector or connector pins.
• Do not touch circuit components inside the module.
• Use a static-safe work station, if available.
• Keep the module in its static-shield box, when it is not in use.
14 Publication 1769-UM019A-EN-P - October 2008
Remove Power
Installation and Wiring Chapter 2
ATTENTION
Remove power before removing or inserting this module. When
you remove or insert a module with power applied, an electrical
arc may occur. An electrical arc can cause personal injury or
property damage by:
• sending an erroneous signal to your system’s field devices,
causing unintended machine motion.
• causing an explosion in a hazardous environment.
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector and may lead to premature
failure.
Reduce Noise
Most applications require installation in an industrial enclosure to
reduce the effects of electrical interference. Analog inputs and outputs
are highly susceptible to electrical noise. Electrical noise coupled to
the analog inputs and outputs reduces the performance (accuracy) of
the module.
Group your modules to minimize adverse effects from radiated
electrical noise and heat. Consider the following conditions when
selecting a location for the analog module. Position the module:
• away from sources of electrical noise such as hard-contact
switches, relays, and AC motor drives.
• away from modules that generate significant radiated heat, such
as the 1769-IA16 module. Refer to the module’s heat dissipation
specification.
In addition, route shielded, twisted-pair analog input wiring away
from any high-voltage I/O wiring.
Protecting the Circuit Board from Contamination
The printed circuit board of the module must be protected from dirt,
oil, moisture, and other airborne contaminants. To protect the board,
the system must be installed in an enclosure suitable for the
environment. The interior of the enclosure should be kept clean and
the enclosure door should be kept closed whenever possible.
Publication 1769-UM019A-EN-P - October 2008 15
Chapter 2 Installation and Wiring
Assemble the Compact I/O System
2
The module can be attached to the controller or an adjacent I/O
module before or after mounting.
For mounting instructions, see Panel Mounting By Using the
Dimensional Template on page 18, or Mount to a DIN Rail on page
19. To work with a system that is already mounted, see Replace a
Single Module Within a System on page 19.
3
4
1
6
1
5
1. Disconnect power.
2. Check that the bus lever of the module to be installed is in the
unlocked (fully right) position.
3. Use the upper and lower tongue-and-groove slots (1) to secure
the modules together (or to a controller).
4. Move the module back along the tongue-and-groove slots until
the bus connectors (2) line up with each other.
5. Use your fingers or a small screwdriver to push the bus lever
back slightly to clear the positioning tab (3).
16 Publication 1769-UM019A-EN-P - October 2008
Installation and Wiring Chapter 2
6. To allow communication between the controller and module,
move the bus lever fully to the left (4) until it clicks.
Make sure it is locked firmly in place.
Mounting the Module
ATTENTION
When attaching I/O modules, it is very important that
the bus connectors are securely locked together to be
sure of proper electrical connection.
7. Attach an end cap terminator (5) to the last module in the
system by using the tongue-and-groove slots as before.
8. Lock the end cap bus terminator (6).
IMPORTANT
A 1769-ECR or 1769-ECL right or left end cap must be used to
terminate the end of the bus.
Modules may be mounted to a panel or to a DIN rail.
ATTENTION
During panel or DIN rail mounting of all devices, be sure that all
debris (that is, metal chips or wire strands) is kept from falling
into the module. Debris that falls into the module could cause
damage when you cycle power.
Minimum Spacing
Maintain spacing from enclosure walls, wireways, or adjacent
equipment. Allow 50 mm (2 in.) of space on all sides for adequate
ventilation.
Space Requirements
Top
Host Controller
Side Side
Compact I/O
Compact I/O
Compact I/O
Compact I/O
Bottom
Publication 1769-UM019A-EN-P - October 2008 17
End Cap
Compact I/O
Chapter 2 Installation and Wiring
Mount to a Panel
Mount the module to a panel by using two screws per module. Use
M4 or #8 panhead screws. Mounting screws are required on every
module.
Panel Mounting By Using the Dimensional Template
Locate holes every 17.5 mm (0.689 in.) to allow for a mix of
single-wide and one-and-a-half-wide modules (for example, the
1769-OA16 module).
Spacing for one-and-a-half-wide modules 52.5 mm (2.067 in.).
Spacing for single-wide modules 35 mm (1.378 in.).
Refer to host controller documentation for this dimension.
Overall hole spacing tolerance:
±0.4 mm (0.016 in.).
l Mounting
Host Controller
Panel Mounting By Using the Modules as a Template
This procedure lets you use the assembled modules as a template for
drilling holes in the panel. If you have sophisticated panel-mounting
equipment, you can use the dimensional template provided. Due to
module mounting-hole tolerance, it is important to follow these
procedures.
1. On a clean work surface, assemble no more than three modules.
2. Using the assembled modules as a template, carefully mark the
center of all module-mounting holes on the panel.
3. Return the assembled modules to the clean work surface,
including any previously mounted modules.
4. Drill and tap the mounting holes for the recommended M4 or #8
screw.
5. Place the modules back on the panel, and check for proper hole
alignment.
18 Publication 1769-UM019A-EN-P - October 2008
Installation and Wiring Chapter 2
6. Attach the modules to the panel by using the mounting screws.
Replace a Single Module Within a System
TIP
7. Repeat steps 1
If mounting more modules, mount only the last one of this group
and put the others aside. This reduces remounting time during
drilling and tapping of the next group.
…6 for any remaining modules.
Mount to a DIN Rail
The module can be mounted by using the following DIN rails:
• 35 x 7.5 mm (EN 50 022 - 35 x 7.5)
• 35 x 15 mm (EN 50 022 - 35 x 15).
Before mounting the module on a DIN rail, close the DIN rail latches.
Press the DIN-rail mounting area of the module against the DIN rail.
The latches will momentarily open and lock into place.
The module can be replaced while the system is mounted to a panel
(or DIN rail). Follow these steps in order.
1. Remove power.
ATTENTION
2. On the module to be removed, remove the upper and lower
mounting screws from the module or open the DIN latches by
using a flat-blade or Phillips screwdriver.
3. Move the bus lever to the right to disconnect (unlock) the bus.
Remove power before removing or inserting this module. When
you remove or insert a module with power applied, an electrical
arc may occur. An electrical arc can cause personal injury or
property damage by:
•sending an erroneous signal to your system’s field devices,
causing unintended machine motion.
•causing an explosion in a hazardous environment.
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector and may lead to premature
failure.
Publication 1769-UM019A-EN-P - October 2008 19
Chapter 2 Installation and Wiring
4. On the right-side adjacent module, move its bus lever to the
right (unlock) to disconnect it from the module to be removed.
5. Gently slide the disconnected module forward.
If you feel excessive resistance, check that the module has been
disconnected from the bus, and that both mounting screws have
been removed or DIN latches opened.
Grounding the Module
TIP
6. Before installing the replacement module, be sure that the bus
lever on the module to be installed and on the right-side
adjacent module are in the unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus
levers on the replacement module and the right-side adjacent
module.
9. Replace the mounting screws or snap the module onto the DIN
rail.
This product is intended to be mounted to a well-grounded mounting
surface, such as a metal panel. Additional grounding connections from
the module’s mounting tabs or DIN rail (if used) are not required
unless the mounting surface cannot be grounded. Refer to Industrial
Automation Wiring and Grounding Guidelines, publication 1770-4.1
for additional information.
It may be necessary to rock the module slightly
from front to back to remove it, or, in a
panel-mounted system, to loosen the screws of
adjacent modules.
,
20 Publication 1769-UM019A-EN-P - October 2008
Installation and Wiring Chapter 2
System Wiring Guidelines
Consider the following when wiring your system:
• All module commons (ANLG Com) are connected in the analog
module.
• The analog common (ANLG Com) is not connected to earth
ground inside the module.
• Channels are not isolated from each other.
• For optimum accuracy, limit overall cable impedance by
keeping your cable as short as possible. Locate the I/O system
as close to your sensors or actuators as your application will
permit.
• Use Belden 8761, or equivalent, shielded wire.
• Under normal conditions, the drain wire and shield junction
must be connected to earth ground via a panel or DIN rail
mounting screw at the analog I/O module end.
(1)
Keep shield
connection to ground as short as possible.
• If multiple power supplies are used with analog inputs, the
power supply commons must be connected.
• The module does not provide loop power for analog inputs. Use
a Class 2 power supply that matches the input transmitter
specifications.
• Differential analog inputs are more immune to noise than
single-ended analog inputs.
• Voltage outputs (Vout 0+ and Vout 1+) of the 1769-IF4FXOF2F
module are referenced to ANLG Com. Load resistance for a
voltage output channel must be equal to or greater than 1 kΩ .
• Current outputs (Iout 0+ and Iout 1+) of the 1769-IF4FXOF2F
module source current that returns to ANLG Com. Load
resistance for a current output channel must remain between 0
and 500 Ω .
• Voltages on Vin+, V/Iin-, and Iin+ terminals of the
1769-IF4FXOF2F module must be within ±10V DC of analog
common (ANLG Com).
(1) In environments where high-frequency noise may be present, it may be necessary to directly ground cable
shields to earth at the module end and via a 0.1 µF capacitor at the sensor end.
Publication 1769-UM019A-EN-P - October 2008 21
Chapter 2 Installation and Wiring
Effect of Transducer/Sensor and Cable Length Impedance on
Voltage Input and Output Accuracy
For voltage inputs and outputs, the length of the cable used between
the transducer/sensor/load and the module can affect the accuracy of
the data provided by the module.
Voltage Input Accuracy
RcRs
+
Vs
-
V in
Rc
Where:
Rc = DC resistance of the cable (each conductor) depending on
cable length
Ri
Rs = Source impedance of analog transducer/sensor input
Ri = Impedance of the voltage input (220 kΩ)
Vs = Voltage source (voltage at the transducer/sensor input device)
Vin = Measured potential at the module input
%Ai = Percent added inaccuracy in a voltage-based system due
to source and cable impedance
Ri Vs×[]
Vin
--------------------------------------------------------
=
[]
Rs 2 Rc×()Ri++
For example, for Belden 8761 two conductor, shielded cable:
Rc = 5.25 Ω/1000 m
Rs = 0 (ideal source)
Effect of Cable Length on Input Accuracy
Length of Cable,
m (ft)
50 (164) 2.625 0.002385%
100 (328) 5.25 0.00477%
200 (656) 10.50 0.00954%
300 (984) 15.75 0.01431%
DC Resistance of the Cable,
Rc (Ω)
%Ai 1
Vin
⎛⎞
---------
Vs
100×=
–
⎝⎠
Accuracy Impact at the
Input Module
22 Publication 1769-UM019A-EN-P - October 2008
Installation and Wiring Chapter 2
As input source impedance (Rs) and/or resistance (DC) of the cable
(Rc) get larger, system accuracy decreases. If you determine that the
inaccuracy error is significant, implementing the following equation in
the control program can compensate for the added inaccuracy error
due to the impedance of the source and cable.
Rs 2 Rc×()Ri++[]
Vs Vin
--------------------------------------------------------
×=
Ri
TIP
For current signals, source and cable impedance do not impact
system accuracy.
Voltage Output Accuracy
RcRs
+
Vs
-
V in
Rc
Where:
Rc = DC resistance of the cable (each conductor)
depending on cable length
Rs = Source impedance (1 Ω)
Ri = Impedance of the voltage input
Vs = Voltage at the output of 1769-IF4FXOF2F module
Ri
Vin = Measured potential at the module input
%Ai = Percent added inaccuracy in a voltage-based
system due to source and cable impedance
Ri Vs×[]
Vin
Publication 1769-UM019A-EN-P - October 2008 23
--------------------------------------------------------
=
[]
Rs 2 Rc×()Ri++
Chapter 2 Installation and Wiring
For example, for Belden 8761 two conductor, shielded cable and a
1769-IF4 input module:
Rc = 52.5 Ω/1000 m
Rs = 1 Ω
%Ai 1
Vin
⎛⎞
---------
Vs
100×=
–
⎝⎠
Ri = 220 KΩ
Effect of Output Impedance and Cable Length on Accuracy
Length of Cable DC Resistance of the Cable Rc Accuracy Impact at the
Input Module
50 m (164 ft) 2.625 Ω 0.00284%
100 m (328 ft) 5.25 Ω 0.00523%
200 m (656 ft) 10.50 Ω 0.01%
300 m (984 ft) 15.75 Ω 0.01477%
As output impedance (Rs) and/or resistance (DC) of the cable (Rc) get
larger, system accuracy decreases. If you determine that the
inaccuracy error is significant, implementing the following equation in
the control program can compensate for the added inaccuracy error
due to the impedance of the module’s voltage outputs and cable.
TIP
For current outputs, source and cable impedance do not impact
system accuracy as long as the total resistance of the cable and
input impedance of the load remain within the specified
maximum limits for the module's current outputs.
Rs 2 Rc×()Ri++[]
--------------------------------------------------------
×=
Ri
Label the Terminals
Vs Vin
A removable, write-on label is provided with the module. Remove the
label from the door, mark the identification of each terminal with
permanent ink, and slide the label back into the door. Your markings
(ID tag) will be visible when the module door is closed.
24 Publication 1769-UM019A-EN-P - October 2008
Installation and Wiring Chapter 2
Remove the Finger-safe Terminal Block
Wire the Finger-safe
When wiring field devices to the module, it is not necessary to remove
the terminal block. If you remove the terminal block, use the write-on
label on the side of the terminal block to identify the module slot
location and type. RTB position (for one-and-a-half size modules) can
be indicated by circling either the R for right side or L for left side.
Finger-safe Terminal Block
R L
SLOT # ____
MODULE TYPE _____
RoHS
To remove the terminal block, loosen the upper and lower retaining
screws. The terminal block will back away from the module as you
remove the screws. When replacing the terminal block, torque the
retaining screws to 0.46 N•m (4.1 lb•in).
Terminal Block
Upper Retaining Screw
Lower Retaining Screw
When wiring the terminal block, keep the finger-safe cover in place.
1. Loosen the terminal screws to be wired.
2. Begin wiring at the bottom of the terminal block and move up.
Publication 1769-UM019A-EN-P - October 2008 25
Chapter 2 Installation and Wiring
3. Route the wire under the terminal pressure plate.
You can use the bare wire or a spade lug. The terminals accept a
6.35 mm (0.25 in.) spade lug.
TIP
The terminal screws are non-captive. Therefore, it is possible to
use a ring lug (maximum 1/4 in. o.d. with a 0.139 in. minimum
i.d. (M3.5)) with the module.
4. Tighten the terminal screw making sure the pressure plate
secures the wire.
Recommended torque when tightening terminal screws is
0.68 N•m (6 lb•in).
TIP
If you need to remove the finger-safe cover, insert a screwdriver
into one of the square, wiring holes and gently pry the cover off.
If you wire the terminal block with the finger-safe cover
removed, you will not be able to put it back on the terminal
block because the wires will be in the way.
Wire Size and Terminal Screw Torque
Each terminal accepts up to two wires.
Wire Type Wire Size Terminal Screw Torque Retaining Screw Torque
Solid Cu-90 °C (194 °F)
Stranded Cu-90 °C (194 °F)
0.325…2.080 mm
0.325…1.310 mm
2
(22…14 AWG)
2
(22…16 AWG)
0.68 N•m (6 lb•in) 0.46 N•m (4.1 lb•in)
0.68 N
•m (6 lb•in)
0.46 N•m (4.1 lb•in)
26 Publication 1769-UM019A-EN-P - October 2008
Wire the Modules
Installation and Wiring Chapter 2
ATTENTION
To prevent shock hazard, care should be taken when wiring the
module to analog signal sources. Before wiring any analog
module, disconnect power from the system power supply and
from any other source to the analog module.
After the analog module is properly installed, follow the wiring
procedure below. For proper operation and high immunity to
electrical noise, always use Belden 8761 (shielded, twisted-pair) or
equivalent wire.
ATTENTION
When wiring an analog input, take care to avoid connecting a
voltage source to a channel configured for current input.
Improper module operation or damage to the voltage source
can occur.
Never connect a voltage or current source to an analog output
channel.
Belden 8761 Wire
Cut foil shield
and drain wire.
Signal Wire
Signal Wire
Drain Wire
Cable
Foil Shield
Signal Wire
To wire your module, follow these steps.
1. At each end of the cable, strip some casing to expose the
individual wires.
2. Trim the signal wires to 2-in. lengths.
Signal Wire
3. Strip about 5 mm (3/16 in.) of insulation away to expose the end
of the wire.
ATTENTION
Be careful when stripping wires. Wire fragments that
fall into a module could cause damage when you cycle
power.
Publication 1769-UM019A-EN-P - October 2008 27
Chapter 2 Installation and Wiring
4. At one end of the cable, twist the drain wire and foil shield
together.
Under normal conditions, this drain wire and shield junction
must be connected to earth ground, via a panel or DIN rail
mounting screw at the analog I/O module end. Keep the length
of the drain wire as short as possible.
In environments where high frequency noise may be present, it
may be necessary to also ground the cable shields to earth via a
0.1 µF capacitor at the sensor end.
5. At the other end of the cable, cut the drain wire and foil shield
back to the cable, unless the sensor end of the cable requires
the shields to be connected to earth ground via the capacitor
described in step 4
.
6. Connect the signal wires to the terminal block.
7. Connect the other end of the cable to the analog input or output
device.
8. Repeat steps 1
Terminal Layout
V in 1+
V/I in 1 -
I in 1+
V in 3+
V/I in 3 -
I in 3+
ANLG Com
V out 1+
I out 1+
…6 for each channel on the module.
V in 0+
V/I in 0-
I in 0+
V in 2 +
V/I in 2-
I in 2+
ANLG Com
V out 0+
I out 0+
28 Publication 1769-UM019A-EN-P - October 2008
Wire Differential Inputs
V in 1+
V/I in 1 -
I in 1+
V in 3+
V/I in 3 -
I in 3+
ANLG Com
V out 1+
I out 1+
Installation and Wiring Chapter 2
Belden 8761 Cable (or equivalent)
+
–
Differential
Voltage
Transmitter
V in 0+
V/I in 0-
I in 0+
V in 2 +
V/I in 2-
I in 2+
ANLG Com
V out 0+
I out 0+
Earth Ground the
Shield Locally at
the Module
(1)
Differential
+
Current
Transmitter
(1)
–
(1) The sensor power supply must be rated Class 2.
Earth Ground the Shield
Locally at the Module
Wiring Single-ended Sensor/Transmitter Types
Sensor/
Transmitter
Power
Supply
+
-
(1)
Current
Transmitter
+
Signal
Voltage
Transmitter
+
Ground
Signal
Terminal Block
V in 0+
I in 0+
V/I in 0 -
V in 1+
I in 1+
V/I in 1-
V in 2+
I in 2+
V/I in 2-
V in 3+
I in 3+
V/I in 3ANLG Com
ANLG Com
V out 0+
I out 0+
V out 1+
I out 1 +
(1) The sensor power supply must be rated Class 2.
Publication 1769-UM019A-EN-P - October 2008 29
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