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Configuring a Allen-Bradley ControlLogix PLC

The Allen-Bradley ControlLogix system differs from other logic control systems in that the ControlLogix system is capable of integrating an entire manufacturing environment, not just certain machines or lines within a factory.

By EngNet Engineering Network

The Allen-Bradley ControlLogix system differs from other logic control systems in that the ControlLogix system is capable of integrating an entire manufacturing environment, not just certain machines or lines within a factory. A simple ControlLogix system consists of a stand alone controller and input/output modules in a single chassis. More complex systems can have more than one controller in a chassis or multiple controllers and input/output modules in several chassis. These chassis can be part of an extended network interconnected with various communication modules and spread throughout an entire manufacturing facility. ControlLogix provides the total system, including discrete and analog input/output, control over drives, motion, processes, and even safety concerns. The ControlLogix system can be configured in standard formats, for harsh environments, and even with integrated safety features. It is a totally modular system that can be configured to meet the demands and concerns of any manufacturing facility. Designing the initial system, building it, and even modifying it at some future date can be done very cost-effectively, both in terms of initial equipment expense as well as significant savings realized in engineering the system and training those who will use it.

The entire ControlLogix system is a blend of several different modular components which are mounted in the system cabinet. Among these components are:

Configuring your ControlLogix system, whether it be for one machine, an assembly line, or an entire manufacturing facility, is rather straightforward. You will need to closely examine the relevant manufacturing blueprints, as well as all machine prints and electrical prints pertinent to the task at hand. Create a spreadsheet listing all operations requiring input and output points. Also note all specialty applications, such as motion control and temperature control, and the type of communications modules needed to interface with the various system components. After completing this spreadsheet you will be able to determine the amount of memory necessary, the number of input/output modules and communication modules needed, and all other aspects of your ControlLogix system. The following tables list the various options available to complete your ControlLogix system. The order in which they are presented is the most logical way to configure your system. For instance, you cannot determine which ControlLogix Controller(s) to select until you have analyzed the number of Input/Output modules needed.

Allen Bradley ControlLogix Controllers

Controllers

Several options are available, including standard controllers, GuardLogix safety controllers, and ControlLogix-XT extreme temperature controllers. User memory options range from 2 MB to 32 MB.

You will need to select the appropriate controller with sufficient memory to operate your system. If there is any doubt, always select the next larger memory option. You'll also be choosing optional memory cards as needed. Controllers can be placed in any slot of a ControlLogix chassis, and multiple controllers can be mounted in the same chassis. Multiple controllers communicate with each other but can operate independently. Refer to the following tables for specifications. Controller USB ports are intended for temporary local programming. USB ports are not suited for permanent connections or hazardous locations.

Part Number Description User Memory
1756-L71 ControlLogix Controller
with 1 built-in USB Port
2 MB
1756-L72 4 MB
1756-L73 8 MB
1756-L74 16 MB
1756-L75 32 MB
1756-L61 ControlLogix Controller
with 1 built-in RS-232 Port
2 MB
1756-L62 4 MB
1756-L63 8 MB
1756-L64 16 MB
1756-L65 32 MB
1756-L63XT ControlLogix XT Controller for
Extreme Temperatures/Extreme Environments
8 MB
1756-L73XT 8 MB
1756-L61S GuardLogix Safety Controllers 2 MB Standard/1 MB Safety
1756-L62S 4 MB Standard/1 MB Safety
1756-L63S 8 MB Standard/3.75 MB Safety
1756-L72S 4 MB Standard/2 MB Safety
1756-L73S 8 MB Standard/4 MB Safety
1756-LSP GuardLogix Safety Partner/Use with 1756-L6xS GuardLogix Controllers
1756-L7SP GuardLogix Safety Partner/Use with 1756-L7xS GuardLogix Controllers

ControlLogix Controllers Standard Features

Feature 1756-L61, L62, L63, L64, L65 1756-L71, L72, L73, L74, L75
Controller Tasks 32 Tasks, 100 Programs/Task, Event Tasks: All Event Triggers
Built-In Communication Ports (1) RS-232 Serial Port (1) USB Port
Communication Options EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, Third Party Process and Device Networks
Maximum Controller Connections 250 500
Connections per Network Module 100 ControlNet (1756-CN2/A); 40 ControlNet (1756-CNB;
256 EtherNet/IP, 128 TCP (1756-EN2x); 128 EtherNet/IP, 64 TCP (1756-ENBT)
Controller Redundancy Full Support
Integrated Motion EtherNet/IP Connection; SERCOS; Analog Options: Encoder, LDT, SSI
Programming Languages Relay Ladder; Structured Text; Function Block; SFC
Optional Memory Cards 1784-CF128: 128 MB 1784-SD1: 1 GB; 1784-SD2: 2 GB

Redundant ControlLogix Controllers

All ControlLogix controllers support controller redundancy. A redundant controller system requires two 1756 Chassis per redundant system with these identical features:

  1. Total number of slots
  2. Modules in same slots in each chassis
  3. Redundancy firmware in each chassis
  4. Two additional ControlNet Nodes outside the redundant chassis pair
  5. One 1756-RM Redundancy Module per chassis to support one 1756-L64 or L65 controller or one 1756-RM to support two 1756-L71, L72, L73, L74, L75, L61, L62 or L63 controllers
  6. Maximum seven communication modules. Choose from 1756-CN2/B, CN2R/B, EN2T, or EN2F Modules
  7. One 1756-RMCx cable

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Allen Bradley ControlLogix Communication Modules

Communication Modules

Available options include EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, Foundation Fieldbus, Serial, DH-485, and SynchLink. Multiple communication modules can be installed in the ControlLogix system to allow control and/or sharing of data over different networks.

After determining the networks you will be using you will be able to select the communication modules your system will require and the necessary cables and network equipment. Remember to plan for extra modules and cables if you are designing a redundant system. It is possible to route a message through up to 4 different chassis (8 communication hops). A ControlLogix controller is not required in each chassis to accomplish this. The following tables list the various communication modules available to interface with your system. The first table lists normal usage applications for the industry protocol communications networks.

Communication Network Applications

Communication Network Standard Applications
EtherNet/IP Plant Management (Material Handling)
Configuration,Data Collection & Control/Single High Speed Network
Time Critical Applications/No Established Schedule
Inclusion of Commercial Technologies (Video over IP, etc.)
Internet/Intranet Connection
Integrated CIP Motion & Safety
ControlNet High Speed Transfer of Time Critical Data Between Controllers and I/O Devices
Deterministic & Repeatable Data Delivery
Media Redundancy
Intrinsic Safety
Redundant Controller Systems
DeviceNet Connection of Low-Level Devices to Controllers w/o Interfacing Through I/O Modules
Data Sent As Needed
More Diagnostics for Improved Data Collection & Fault Detection
Less Wiring & Reduced Start-Up Time than Traditional Hard-Wired System
Data Highway Plus Plant Wide and Cell Level Data Sharing With Program Maintenance
Data Sent on Regular Basis
Transferring Information Between Controllers
Remote I/O Connections Between Controllers & I/O Adapters
Data Sent on Regular Basis
Distributed Control/Each Controller Has I/O & Communicates with Supervisory Controller
Foundation Fieldbus Fieldbus Transmitters & Actuators
Closed Loop Control
Process Automation

EtherNet/IP Communication Modules

The EtherNet Industrial Protocol Network (EtherNet/IP) is an industry standard open network which supports both real time input/output messaging and message exchange. EtherNet/IP uses readily available standard EtherNet communication chips and/or physical media.

Part Number EtherNet/IP
Application
Media Communication
Rate
CIP Motion
Axes (Max)
TCP/IP
Connections
Logix
Connections
1756-EN2F Bridge, Fiber Fiber 100 Mbps 8 128 256
1756-EN2T Bridge, Copper Copper 10/100 Mbps 8 128 256
1756-EN2TR Bridge, Copper,
Embedded Switch
Dual Copper 10/100 Mbps 8 128 256
1756-EN3TR Bridge, Copper,
Embedded Switch
Dual Copper 10/100 Mbps 128 128 256
1756-ENBT Bridge, Copper Copper 10/100 Mbps - 64 128
1756-EWEB Web Server Module Copper 10/100 Mbps - 64 128
1756-EN2TXT ControlLogix-XT Bridge, Copper, Extreme Environments Copper 10/100 Mbps 8 128 256

EtherNet/IP Network Accessories

Part Number EtherNet/IP Application Specifications
1585J-M8PBJM-x RJ45 Patchcord; x = 2 (2m), x = 5 (5m),
or x = 10 (10m)
8 Conductor, Teal Riser PVC Cable
(Flex Rated Cable Available)
1585J-M8CC-H RJ45 Insulation Displacement
Connector (IDC)
0.128... 0.325 mm2 (26... 22 AWG), Cat. 6,
IDC, No Tool Required
1585J-M8CC-C RJ45 Crimp Connector With Boot,
Quantity: 50 Pieces
0.128... 0.205 mm2 (26... 24 AWG), Cat 5e,
Crimp Tool Required
1585Jcrimp Crimp Tool Use With 1585J-M8CC-C
9300-RADES Remote Access Dial-In Kit 56 Kbps Modem Connection With:
Pre-Configured Modem,
Communication Module,
DIN Rail Mounting Hardware,
and Associated Cables

ControlNet Communication Modules

The ControlNet network provides high speed capabilities by combining the best aspects of an input/output network and a peer-to-peer network. ControlNet features deterministic, repeatable transfers of critical control data. The modules with 128 Logix connections also have an additional 3 connections reserved for redundant control. For the modules with 64 Logix connections it is recommended to use only 40 to 48 of these for input/output connections.

Part Number ControlNet
Application
Communication
Rate
Logix
Connections
Number
of Nodes
1756-CN2/B Standard Media Bridge 5 Mbps 128 (+3) 99
1756-CN2R/B Redundant Media Bridge 5 Mbps 128 (+3) 99
1756-CNB Standard Media Bridge 5 Mbps 64 99
1756-CNBR Redundant Media Bridge 5 Mbps 64 99
1756-CN2RXT ControlLogix-XT Redundant Media Bridge 5 Mbps 128 (+3) 99

DeviceNet Communication Module and Accessories

The DeviceNet network, as its name implies, provides communication connections between system devices. The devices can be as simple as sensors and actuators or more complex devices, such as controllers and computers.

Part Number DeviceNet Application
1756-DNB DeviceNet Bridge Module
Communication Rates: 125 Kbps (500 m max); 250 Kbps (250 m max);
500 Kbps (100 m max)
Number of Nodes: 64
KwikLink Lite Flat Media Newer, ODVA approved for wiring DeviceNet networks. Supports intermixing of DeviceNet cable types, such as round with flat. KwikLink Lite connectors provide insulation displacement.
KwikLink Flat Media Modular cabling with flat 4-wire cable and insulation displacement connectors (IDCs). System Nodes can be added without cutting or stripping trunkline. Eliminates need for predetermined cable lengths.
Round Media Round trunk cable is available in bulk spools or as pre-molded cable sets of various lengths. Round cable supports rugged and durable DeviceNet components, including stainless steel versions:
1. Thick trunk round cable provides maximum length DeviceNet trunk lines.
2. Thin trunk cable reduces maximum trunk line distances with a more compact installation. Thin cable outer jacket is TPE for added chemical resistance.

Data Highway Plus and Remote Input/Output Communication Modules and Accessories

Part Number Description Communication
Rate
DH+
Connections
RIO
Connections
Logix
Connections
1756-DHRIO DH+/Remote I/O 57.6 Kbps, 115.2 Kbps, 230.4 Kbps 32 DH+ messages per DH+ Module Remote I/O Scanner:
32 logical rack /channel;
16 block-transfer/channel
32
1756-RIO Remote I/O 57.6 Kbps, 115.2 Kbps, 230.4 Kbps -- Remote I/O Scanner/Adapter:
32 physical racks (0... 76), any rack size and/or block transfers
10 Scheduled
Input/Output
1756-DHRIOXT Extended Temperature
DH+/Remote I/O
57.6 Kbps, 115.2 Kbps, 230.4 Kbps 32 DH+ messages per DH+ Module Remote I/O Scanner:
32 logical rack/channel;
16 block-transfer/channel
32
1770-CD Belden 9463 twin axial cable; connects communication module to DH+ Network
9300-RADKIT Remote access dial-in kit: 56 Kbps modem connection to DH+ Network devices. Kit includes: Pre-configured Modem, Communication Module, DIN rail mounting hardware, and associated cables.

FOUNDATION Fieldbus Linking Devices

FOUNDATION Fieldbus networks are designed for distributed control of process applications. The Fieldbus network is linked to other plant networks with the following bridge devices. Although these linking devices can accommodate up to 16 devices per H1 link, 8 to 10 devices per link is recommended.

Part Number Fieldbus
Application
Communication
Rate
H1 Ports Devices per
H1 Link
Total Device Links
Available
1757FFLD2 EtherNet/IP
Network Bridge
Fieldbus: 31.25 Kbps
EtherNet/IP: 10/100 Mbps
2 16 32
1757-FFLD4 EtherNet/IP
Network Bridge
Fieldbus: 31.25 Kbps
EtherNet/IP: 10/100 Mbps
4 16 64
1757-FFLDC2 ControlNet
Network Bridge
Fieldbus: 31.25 Kbps
ControlNet: 5 Mbps
2 16 32
1757-FFLDC4 ControlNet
Network Bridge
Fieldbus: 31.25 Kbps
ControlNet: 5 Mbps
4 16 64

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Allen Bradley ControlLogix Integrated Motion

Integrated Motion

Options include SERCOS and/or analog interface modules. Analog modules require the use of a removable terminal block (RTB).

Requirements for integrated motion include either an EtherNet/IP communication module, a SERCOS interface module, or an analog interface module along with associated cables and a removable terminal block (RTB) if analog interface is chosen. Also needed is the various drives, motors and accessories required to complete the system. These selections can be made easier by referring to the following tables.

Integrated Motion on an EtherNet/IP Network

Product Selection Considerations
Drive that supports EtherNet/IP connections Unlimited Velocity, Torque, and Vhz configured drives:
Kinetix 65000 Drives
Kinetix 5500 Drives
Kinetix 350 Drives
Powerflex 755 Drives
ControlLogix Controller Up to 100 Drives per Controller
ControlLogix Ethernet/IP Communication Module 1... 8 Position Configured Drives/1756-EN2TR Module
1... 255 Position Configured Drives/1756-EN3TR Module

SERCOS Interface Modules

Many options are available by coupling Rockwell PanelView and PanelView Plus CE electronic operator interfaces with Rockwell Automation industrialized personal computer hardware.

Part Number Description Number of Axis Use With Servo Drives
1756-M16SE Rockwell Automation
SERCOS
Interface Modules
16 2093 Kinetix 2000 multi-axis;
2094 Kinetix 6000 multi-axis;
2099 Kinetix 7000 multi-axis;
2098 Ultra 3000 SERCOS
1756-M08SE 8
1756-M03SE 3
1756-M08SEG SERCOS Interface Drives/Extended Pack Profile Compliant 8

Analog Motion Interface Modules

Part Number Description Number of Axis
1756-M02AE Analog Servo Interface Drives with Quadrature Feedback 2
1756-HYD02 Analog, Hydraulic Servo Interface Drives LDT Feedback 2
1756-M02AS Analog Servo Interface Drives with SSI Feedback 2

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Allen Bradley ControlLogix I/O Modules

Input/Output Modules

Choose from digital, analog, RTD, motion, thermocouple, and specialty modules. Further options include field-side diagnostics, individually isolated inputs and/or outputs, and electronic fusing. Each module requires a remote terminal block (RTB).

Your selection process will include not only the I/O requirements of the system but also the characteristics of the modules. Input/Output modules can cover many applications, from high speed digital to process control. By the use of a producer/consumer model, the ControlLogix system can share input information and output status with many controllers over the entire system. Some modules feature field-side diagnostics, electronic fusing, and/or individually isolated inputs or outputs. You will need to select a remote terminal block (RTB) or a 1492 interface module (IFM) to connect all field wiring for each module. The following tables list the various input/output module options available.

AC Digital Input Modules

Part Number Inputs Voltage
Category
Operating Voltage
Range
Removable Terminal
Block (RTB)
1756-IA8D 8 Diagnostic
(4 points/group)
120 VAC 79... 132 VAC 1756-TBNH
1756-TBSH
1756-IA16 16
(8 points/group)
120 VAC 74... 132 VAC 1756-TBNH
1756-TBSH
1756-IA16I 16 Individually
Isolated
120 VAC 74... 132 VAC 1756-TBCH
1756-TBS6H
1756-IA32 32 Diagnostic
(4 points/group)
120 VAC 74... 132 VAC 1756-TBCH
1756-TBS6H
1756-IM16I 16 Individually
Isolated
240 VAC 159... 265 VAC 1756-TBCH
1756-TBS6H
1756-IN16 16
(8 points/group)
24 VAC 10... 30 VAC 1756-TBNH
1756-TBSH

AC Digital Output Modules

Part Number Outputs Voltage
Category
Operating Voltage
Range
Removable Terminal
Block (RTB)
1756-OA8 8
(4 points/group)
120/240 VAC 79... 265 VAC 1756-TBNH
1756-TBSH
1756-OA8D 8 Diagnostic,
Electronically Fused
(4 points/group)
120 VAC 74... 132 VAC 1756-TBNH
1756-TBSH
1756-OA8E 8 Electronically
Fused (4 points/group)
120 VAC 74... 132 VAC 1756-TBNH
1756-TBSH
1756-OA16 16 Mechanically Fused/
Group (8 points/group)
120/240 VAC 74... 265 VAC 1756-TBNH
1756-TBSH
1756-OA16I 16 Individually
Isolated
120/240 VAC 74... 265 VAC 1756-TBCH
1756-TBS6H
1756-ON8 8
(4 points/group)
24 VAC 10... 30 VAC, >50mA
16... 30 VAC, <50mA
1756-TBNH
1756-TBSH

DC Digital Input and Output Modules

Allen-Bradley delineates between the various digital DC modules by sorting them into two categories: Sinking and Sourcing. As an engineer designing your own system it will help you to understand the difference between these two options. Here is the definition as given by Allen-Bradley:

"Sinking and Sourcing are terms used to describe a current signal flow relationship between field input and output devices in a control system and their power supply.

  • Field devices connected to the positive side (+V) of the field power supply are sourcing field devices.
  • Field devices connected to the negative side (DC Common) of the field power supply are called sinking field devices.

To maintain electrical compatibility between field devices and the programmable controller system, this definition is extended to the input/output circuits on the digital I/O modules.

  • Sourcing I/O circuits supply (source) current to the sinking field devices.
  • Sinking I/O circuits receive (sink) current from sourcing field devices.

Europe: DC sinking input and sourcing output module circuits are the commonly used options"

DC Digital Input Modules

Part Number Inputs Voltage
Category
Operating Voltage Range Removable Terminal Block (RTB)
1756-IB16IF 16 High Speed Individually Isolated 12/24 VDC
sink/source
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-IB16 16
(8 points/group)
12/24 VDC
sink
10... 31.2 VDC 1756-TBNH
1756-TBSH
1756-IB16D 16 Diagnostic
(4 points/group)
12/24 VDC
sink
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-IB16I 16 Individually
Isolated
12/24 VDC
sink/source
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-IB16ISOE 16 Individually Isolated,
Sequence of Events
24/48 VDC
sink/source
10... 55 VDC 1756-TBCH
1756-TBS6H
1756-IB32 32
(16 points/group)
12/24 VDC
sink
10... 31.2 VDC 1756-TBCH
1756-TBS6H
1756-IC16 16
(8 points/group)
48 VDC
sink
30... 55 VDC @ 60°C
30... 60 VDC @ 55°C
1756-TBNH
1756-TBSH
1756-IG16 16
(8 points/group)
5 VDC TTL
source (Low=True)
4.5... 5.5 VDC 1756-TBNH
1756-TBSH
1756-IH16I 16 Individually
Isolated
125 VDC
sink/source
90... 146 VDC 1756-TBCH
1756-TBS6H
1756-IH16ISOE 16 Individually Isolated,
Sequence of Events
125 VDC
sink/source
90... 140 VDC 1756-TBCH
1756-TBS6H
1756-IV16 16
(8 points/group)
12/24 VDC 10... 30 VDC 1756-TBNH
1756-TBSH
1756-IV32 32
(16 points/group)
12/24 VDC 10... 30 VDC 1756-TBCH
1756-TBS6H

DC Digital Output Modules

Part Number Outputs Voltage
Category
Operating Voltage
Range
Removable Terminal
Block (RTB)
1756-OB16IEF 16 High Speed,
Individually Isolated,
Electronically Fused
24 VDC
sink/source
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-OB8 8 12/24 VDC
source
10... 30 VDC 1756-TBNH
1756-TBCH
1756-OB8EI 8 Individually Isolated,
Electronically Fused
12/24 VDC 10... 30 VDC 1756-TBNH
1756-TBSH
1756-OB8I 8
Individually Isolated
12/24 VDC 10... 30 VDC 1756-TBCH
1756-TBS6H
1756-OB16D 16 Diagnostic
(8 points/group)
24 VDC
source
19.2... 30 VDC 1756-TBCH
1756-TBS6H
1756-OB16E 16 Electronically Fused
(8 points/group)
12/24 VDC
source
10... 31.2 VDC 1756-TBCH
1756-TBS6H
1756-OB16I 16 Individually
Isolated
12/24 VDC
sink/source
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-OB16IS 16 Individually Isolated,
8 Scheduled
12/24 VDC
sink/source
10... 30 VDC 1756-TBCH
1756-TBS6H
1756-OB32 32
(16 points/group)
12/24 VDC
source
10... 31.2 VDC 1756-TBCH
1756-TBS6H
1756-OC8 8
(4 points/group)
48 VDC
source
30... 60 VDC 1756-TBNH
1756-TBSH
1756-OG16 16
(8 points/group)
5 VDC TTL
source (Low=True)
4.5... 5.5 VDC 1756-TBNH
1756-TBSH
1756-OH8I 8
Individually Isolated
120 VDC 90... 146 VDC 1756-TBCH
1756-TBS6H
1756-OV16E 16 Electronically Fused
(8 points/group)
12/24 VDC
sink
10... 30 VDC 1756-TBNH
1756-TBSH
1756-OV32E 32 Electronically Fused
(16 points/group)
12/24 VDC
sink
10... 30 VDC 1756-TBCH
1756-TBS6H

Contact Output Modules

Part Number Outputs Operating Voltage
Range
Removable Terminal
Block (RTB)
1756-OW16I 16 Normally Open
Individually Isolated
5... 150 VDC
10... 265 VAC
1756-TBCH
1756-TBS6H
1756-OX8I 8 Normally Open
8 Normally Closed
Individually Isolated
(2 points/group)
5... 150 VDC
10... 265 VAC
1756-TBCH
1756-TBS6H

Analog Input Modules

Part Number Inputs Range Resolution Removable Terminal
Block (RTB)
1756-IF6CIS 6 Individually Isolated,
Current Sourcing
0... 21 mA 16 Bits
0.34 µA/bit
1756-TBNH
1756-TBSH
1756-IF6I 6
Individually Isolated
±10.5 V
0... 10.5 V
0... 5.25 V
0... 21 mA
16 Bits
10.5 V: 343 µV/bit
0... 10.5 V: 171 µV/bit
0... 5.25 V: 86 µV/bit
0... 21 mA: 0.34 µA/bit
1756-TBNH
1756-TBSH
1756-IF8 8 Single-ended,
4 Differential,
2 High Speed Differential
±10.25 V
0... 10.25 V
0... 5.125 V
0... 20.5 mA
±10.25 V: 320 µV/cnt(15 bits+)
0... 10.25V: 160 µV/cnt(16 bits)
0... 5.125 V: 80 µV/cnt(16 bits)
0... 20.5 mA: 0.32 µV/cnt(16 bits)
1756-TBCH
1756-TBS6H
1756-IF8H 8 Differential, Current or Voltage, HART Interface ±10V; 0... 5 V;
1... 5 V; 0... 10 V;
0... 20 mA;
4... 20 mA
16... 21 Bits 1756-TBCH
1756-TBS6H
1756-IF16 16 Single-ended,
8 Differential or
4 Differential High Speed
±10.5 V
0... 10.5 V
0... 5.25 V
0... 21 mA
16 Bits
10.5 V: 343 µV/bit
0... 10.5 V: 171 µV/bit
0... 5.25 V: 86 µV/bit
0... 21 mA: 0.34 µA/ bit
1756-TBCH
1756-TBS6H
1756-IF16H 16 Differential Current,
HART Interface
0... 20 mA
4... 20 mA
16... 21 Bits 1756-TBCH
1756-TBS6H
1756-IR6I 6 Individually Isolated
RTD
487 ?©
1000 ?©
2000 ?©
4020 ?©
16 Bits
487 ?©: 7.7 m?©/bit
1000?© : 15 m?©/bit
2000 ?©: 30 m?©/bit
4020 ?©: 60 m?©/bit
1756-TBNH
1756-TBSH
1756-IT6I 6 Individually Isolated
Thermocouple;
1 CJC
-12... 78 mV
-12... 30 mV
16 Bits
-12... 78 mV: 1.4 µV/bit
-12... 30 mV: 0.7 µV/bit
1756-TBNH
1756-TBSH
1756-IT6I2 6 Individually Isolated
Thermocouple;
2 CJC
-12... 78 mV
-12... 30 mV
(High Resolution Range)
16 Bits
-12... 78 mV: 1.4 µV/bit
-12... 30 mV: 0.7 µV/bit
1756-TBNH
1756-TBSH

Analog Output Modules

Part Number Outputs Range Resolution Removable Terminal
Block (RTB)
1756-OF4 4
Voltage or Current
±10.4 V
0... 21 mA
Voltage: 15 bits, 320 µV/bit
Current: 15 bits, 650 nA/bit
1756-TBNH
1756-TBSH
1756-OF6CI 6 Individually Isolated,
Current
0... 21 mA Current: 13 bits,
2.7 µA
1756-TBNH
1756-TBSH
1756-OF6VI 6 Individually Isolated,
Voltage
±10.5 V 21 V: 14 bits, 1.3 mV
10.5 V: 13 bits + sign bit
1756-TBNH
1756-TBSH
1756-OF8 8
Voltage or Current
±10.4 V
0... 21 mA
10.4 V: 15 bits, 320 µV/bit
21 mA: 15 bits, 650 nA/bit
1756-TBNH
1756-TBSH
1756-OF8H 8 Voltage or Current,
HART Interface
±10.4 V
0... 20 mA
4... 20 mA
15... 16 bits 1756-TBNH
1756-TBSH

Analog Combination Input/Output Module

Part Number Inputs/Outputs Range Resolution Removable Terminal Block (RTB)
1756-IF4FX0F2F 4 High Speed,
Sub-millisecond, Differential Inputs;
2 High Speed Voltage
or Current Outputs
Input:
±10.5 V
0... 10.5 V
0... 5.25 V
0... 21 mA
Output:
±10.4 V
0... 21 mA
Input:
Apx. 14 Bits across ±10.5 VDC = 21 V Total, 1.3 mV/bit, 14 bit effective;
0... 10.5 V, 1.3 mV/bit, 13 bit effective;
0... 5.25 V, 1.3 mV/bit, 12 bit effective;
Apx. 12 Bits across 21 mA
0... 21 mA, 5.25 µA/bit
Output:
13 bits across 21 mA = 2.8 µA/bit;
14 bits across 21.8 V = 1.3 mV/bit
1756-TBCH
1756-TBS6H

Specialty Input/Output Modules

Part Number Inputs/Outputs Description Removable Terminal
Block (RTB)
1756-LSC8XIB8I 8... 24 VDC Counters;
8 High Speed 24 VDC Inputs
Low Speed Counter Module
8... 40 kHz 24 VDC Counters;
8 High Speed 24 VDC Auxiliary Inputs
1756-TBCH
1756-TBS6H
1756-CFM 4 Inputs - 2 per channel;
2 Outputs - current sourcing
Configurable Flowmeter Module
2 Flowmeter (F) Inputs for all modes;
2 Gate Inputs for Totalizer Mode for
prover/store count
1756-TBNH
1756-TBSH
1756-HSC 2 Counters, each with 3 Inputs (A, B, Z for Gate/Reset);
4 Outputs (2 points/group)
High Speed Counter Module
5 V Operation: 4.5... 5.5 VDC;
12/24 V Operation: 10... 31.2 VDC
1756-TBCH
1756-TBS6H
1756-PLS Left Section: 2 Groups of 4 Outputs/Inputs each;
Center Section: Resolver Interface and I/O Control;
Right Section: 2 Groups of 4 Outputs/Inputs each
Programmable Limit Switch Module Requires 3 RTBs:
1756-TBNH
1756-TBSH

HART Smart Instrumentation

HART (Highway Addressable Remote Transmitter) is an industry standard protocol used to connect analog devices. The following interfaces are available for connecting HART devices.

If Your Application: Select Description
Has Analog and HART Connectivity in one Module; Needs No External Hardware to Access HART Signal; Can Transmit HART Commands as Unscheduled Messages; Supports Asset Management Software to HART Device 1756-IF8H
1756-IF16H
1756-OF8H
Rockwell Automation Analog
I/O Modules
Has Data Acquisition/Control Application With Slow Update Requirements (Such as Tank Farm); Needs No External Hardware to Access HART Signal; Does Not Connect Directly to Asset Management Software MVI56-HART Prosoft Interface
Has Analog and HART in one Module; Has Instrumentation in Hazardous Areas (Flex EX Modules); Can Transmit HART Commands as Unscheduled Messages; Directly Connects Asset Management Software to HART Devices 1794FLEX I/O
1797 FLEX Ex I/O
There are Specific FLEX I/O and FLEX Ex Modules for HART Systems. These Catalog Numbers end in H, such as 1797-IE8H

Input/Output Module Accessories

There are two methods of providing wiring connections between the 1756 Input/Output Modules and your plant wiring system: Removable Terminal Blocks (RTBs) and prefabricated wiring cable systems that attach directly to the module. Descriptions of both options are listed below. Note that if you select the RTB option and are using 14 gauge or heavier wire you will need to select an extended depth RTB housing (1756-TBE) for each RTB used.

Removable Terminal Blocks (RTBs)

RTB Part Number 1756-TBNH 1756-TBSH 1756-TBCH 1756-TBS6H  
Description 20 Position NEMA Screw Clamp RTB 20 Pin Spring Clamp RTB/Standard Housing 36 Pin Cage Clamp RTB/Standard Housing 36 Pin Spring Clamp RTB/Standard Housing  
Screw Torque 0.8... 1 N/m
7... 9 lb/in
0.4 N/m
4.4 lb/in
 
Screwdriver Width 8 mm - 5/16 in. Maximum

Wiring Cable Systems

Instead of using RTBs and connecting the module wiring on-site you can elect the following wiring system options:

  • Interface Modules (IFMs) provide output terminal blocks for digital input/output modules. You select pre-wired cables matching the digital I/O module to the IFM.
  • Analog Interface Modules (AIFMs) provide output terminal blocks for analog I/O modules. You select pre-wired cables matching the analog I/O module to the AIFM.
  • I/O Module Ready Cables are a prefabricated wiring assembly in which one end is an RTB that plugs directly into the input/output module. The other end of the assembly has color-coded conductors that connect directly to an industry standard terminal block.

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Allen Bradley ControlLogix Power Supplies

Power Supplies

Available to provide 1.2V, 3.3 V, 5 V, and 24 V DC power. Requires one power supply per chassis for standard systems, or a power supply bundle can be selected for redundant systems.

Your options include one power supply for each chassis in a standard system or a power supply bundle in a redundant system. Power supplies mount on the left end of the chassis and plug directly into the backplane. Redundant power supplies provide additional uptime protection for ControlLogix systems used in critical applications. Consult the following table for the appropriate power supply for your system.

Part Number Description Voltage Category Operating Voltage
Range
Chassis
1756-PA72 Standard AC
Power Supply
120VAC/220VAC 85... 265VAC Standard, Series A & B
1756-PA75 120VAC/220VAC 85... 265VAC Standard, Series B
1756-PB72 Standard DC
Power Supply
24 VDC 18... 32 VDC Standard, Series A & B
1756-PB75 24 VDC 18... 32 VDC Standard, Series B
1756-PC75 48 VDC 30... 60 VDC Standard, Series B
1756-PH75 125 VDC 90... 143 VDC Standard, Series B
1756-PAXT ControlLogix-XT
AC power Supply
85... 265VAC 120VAC/240VAC XT
1756-PBXT ControlLogix-XT
DC power Supply
24 VDC 18... 32 VDC XT
1756-PA75R/A Redundant AC
Power Supply/2 Needed
120VAC/220VAC 85... 265VAC Standard,
Series B
1756-PB75R/A Redundant DC
Power Supply/2 Needed
24 VDC 19.2... 32 VDC
1756-PAR2 Bundled Kit With:
Two 1756 PA75R Power Supplies, Two 1756-CPR2 Cables, & One 1756-PSCA2 Chassis Adapter Module
110 VAC N/A
1756-PBR2 Bundled Kit With:
Two 1756 PB75R Power Supplies, Two 1756-CPR2 Cables, & One 1756-PSCA2 Chassis Adapter Module
24 VDC N/A
1756-CPR2 Redundant Power Supply Cable/2 Needed - Length: 3 Ft N/A N/A
1756-PSCA2 Redundant Power Supply Chassis Adapter Module N/A N/A
Annunciator
Wiring
User Supplied Wiring connects to solid-state relays for status/troubleshooting: 2 Needed Maximum Length: 10 Ft. N/A N/A  

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Allen Bradley ControlLogix Chassis

Chassis

Both standard and extreme temperature models are available. Standard chassis are available with 4, 7, 10, 13, or 17 slots, while the extreme temperature (XT) chassis comes in 5 or 7 slot models. All empty slots require slot fillers.

Choose chassis with the necessary slots available for all your system requirements, as well as slot fillers. Any module can be placed in any slot of the chassis. All of the chassis support horizontal, back panel mounting. Chassis specifications are outlined in the following table. All empty slots must use a slot filler.

Part Number Description Slots Operating Temperature
1756-A4 Standard
ControlLogix
Chassis
4 Standard
Operating
Temperatures
1756-A7 7
1756-A10 10
1756-A13 13
1756-A17 17
1756-A4LXT ControlLogix-XT
Extreme Temperature,
Extreme Environment
Chassis
4 -25... 60ºC (-13... 140ºF)
1756-A5XT 5 -25... 70ºC (-13... 158ºF)
1756-A7XT 7
1756-A7LXT 7 -25... 60ºC (-13... 140ºF)
1756-N2 Standard ControlLogix Chassis Slot Filler
1756-N2XT Extreme Temperature ControlLogix-XT Slot Filler

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Allen Bradley ControlLogix Software

Software

Rockwell Software supervisory control, including FactoryTalk View software, is available. Your overall software needs will be determined by the total system configuration, including Input/Output and Communication modules selected. The ControlLogix system is programmed using RSLogix 5000 Enterprise Series software. Optional design and configuration products include RSNetworx and RSLinx software.

Software is available to make your entire system easy to program and maintain. Your selection of modules and your network configuration will determine the software packages necessary to configure and program your ControlLogix system. You will be able to choose from a wide variety of RSLogix 5000 Enterprise Series Software Packages to meet your most stringent system requirements.

This completes an overview of the process you will go through to create a ControlLogix system that will satisfy all of your current manufacturing needs plus allow the flexibility to expand the system as future needs arise. ControlLogix systems are in use worldwide in every imaginable type of manufacturing environment. As the industry standard, ControlLogix systems deliver predictable performance at competitive prices. Don't hesitate to design an up-to-date control system for your plant. Make the ControlLogix choice!

ControlLogix Visualization Products

Select the appropriate computer monitors and interfaces for your system. Rockwell Automation combines Allen-Bradley electronic operator interfaces and industrial personal computer hardware with Rockwell Software supervisory control software to provide optimum visualization products. Current products include the following:

  • FactoryTalk View Software
  • PanelView Plus Operator Interface
  • PanelView Plus CE Operator Interface
  • Industrial Computers and Monitors

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