1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
    1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
    1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
    1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
    1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
    1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory
1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory

1756-L61 | Allen-Bradley ControlLogix Logix5561 Processor 2MB Memory

Part #: 1756-L61 Manufactured by: Allen-Bradley
Regular price
$439.00
Sale price
$439.00
Regular price
4 in Stock
Condition: New-Surplus Original Box
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Product Overview
The 1756-L61 is a controller module for the ControlLogix Modular Programmable Automation Controller (PAC) by Allen-Bradley...  Read more
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Warranty for Product #: 1756-L61
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Product Description P/N: 1756-L61

Description / Specifications

Description 

The 1756-L61 controller is a standard ControlLogix series controller that has been designed by Allen-Bradley/Rockwell Automation. The 1756-L61 controller supports battery backup and its battery can be replaced when it wears out. This controller can handle up to 32 tasks at a time, and it can handle up to 100 programs per task. The 1756-L61 controller can handle up to 250 controller connections and it uses a CompactFlash card for backup memory.

 

Technical Specifications 

 

Condition New / Never Used Surplus
Brand Allen-Bradley
Series ControlLogix
Part Number 1756-L61
Manufacturer Rockwell Automation
Fixed Memory 2, 4, or 8 MB
Module Type Processor Module
Nonvolatile Memory Compact Flash Card 1784-CF128
Maximum I-O 128,000
Communication RS-232 serial port
RS232 Protocols ASCII DF1 full/half-duplex DF1 radio modem DH-485 Modbus via logic
Maximum Analog I-O 4,000
Program Scan Time 0.08 milliseconds
User Memory 2MB
Backplane Current (5Volts DC) 1.2 Amps
Backplane Current (24 Volts DC) 14 milliamps
Vibration 10-500 Hertz
Relative Humidity 5-95 percent
Battery 1756-BA1, 1756-BATM or 1756-BATA

  

 

Information About 1756-L61

The Allen-Bradley 1756-L61 is a ControlLogix controller. It has 2 MB user memory and 478 kb I/O memory available, with an optional non-volatile storage memory of 128 MB with the use of 1784-CF128 CompactFlash memory card. It is a chassis-based controller and can be placed in any available slot of the 1756 ControlLogix chassis. Compatible chassis for this controller are 1756-A4, 1756-A7, 1756-A10, 1756-A13, and the 1756-A17. It has an open-style type of enclosure and can support up to a maximum of 250 controller connections. It also has a built-in RS-232 serial communication port. Supported protocols of the RS232 port are DF1 full/half-duplex, ASCII, DF1 radio modem, Modbus via logic, and DH-485.

It has a maximum digital I/O of 128,000, a maximum analog I/O of 4,000, and a maximum total I/O of 128,000. Controller tasks of the 1756-L61 include 32 tasks, 100 programs per task, and event tasks: all event triggers. The 1756-L61 has various communication options, such as ControlNet, Data Highway Plus, EtherNet/IP, DeviceNet, SynchLink, Remote I/O, and third-party process and device networks. The current draw of the 1756-L61 controller is 1200 mA at 5.1V DC and 14 mA at 24V DC. Power dissipation is at 3.5 W and thermal dissipation is 11.9 BTU/hr. It also has a continuous isolation voltage of 30V and has been tested at 720V DC for 60 s. It has an operating temperature of 0 to 60 Degrees Celsius, a storage temperature of -40 to 85 Degrees Celsius, and a maximum surrounding air temperature of 60 Degrees Celsius. Relative humidity is between 5% to 95% (noncondensing) and its vibration is 2 g at 10 to 500 Hz, with operating and non-operating shocks of 30 g and 50 g respectively.

The Allen-Bradley 1756-L61 is a ControlLogix controller that features an integrated 2MB user memory that enabled the controller to handle up t o128,000 Discrete and 4000 Analog I/O. This controller has an integrated RS232 Communication port that may be configured for ASCII, DF1 full/half-duplex, DF1 radio modem, DH-485 and Modbus via logic.

This controller support implementation of stand-alone and distributed I/O application. Though the module’s allowable 250 connections. Depending on the communication module used, the network connections may vary. It also supports redundancy for increasing system availability which is typically required in critical systems.

This controller also has an integrated motion through the embedded SERCOS interface, Analog input options such as encoder input, LDT input and SSI input. If used with Ethernet communication module, this drive may implement motion over Ethernet I/P.

Supported programming languages of the controller includes Relay Ladder, Structured Text, Function Block Diagram (FBD) and Sequential Function Chart (SFC).

To communicate with the module, RS232 communication cable is required. Appropriate communication for this module are 1756-CP3 or 1747-CP3, right angle connector to controller, straight to serial port, 3 m (9.84 ft). This module uses battery to retain the user program and data within its memory. For a series A controller, appropriate batteries are 1756-BA1, 1756-BATM, 1756-BATA while 1756-BA2 for Series B controller.

This controller is ideal for use in most medium scale processes, within the specified I/O capacity. To enhance the module’s performance, additional modules may be installed such as communication modules, specialty and intelligent modules, and encompass partner modules.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1756-L61
Question: What is the 1756-L61 ControlLogix PLC?
Date Update:28/05/2025
Answer:

The 1756-L61 is an Allen-Bradley ControlLogix 5561 series programmable logic controller (PLC). It is designed to handle complex control systems and is ideal for large-scale automation systems that require high processing power, flexible I/O configuration, and extensive communication capabilities. The 1756-L61 supports the Ethernet/IP communication protocol and integrates seamlessly with other ControlLogix and CompactLogix controllers.

Question: How do I program the 1756-L61?
Date Update:28/05/2025
Answer:

The 1756-L61 is programmed using Studio 5000 Logix Designer software, which is the standard software environment for Allen-Bradley’s ControlLogix controllers. The software allows you to create programs using ladder logic, structured text, and function block diagrams. Once the program is created, it can be downloaded to the 1756-L61 over Ethernet or a serial connection.

Question: What is the memory capacity of the 1756-L61?
Date Update:28/05/2025
Answer:

The 1756-L61 has 2 MB of user memory, which is used to store the control program, data tables, and configuration settings. This amount of memory is suitable for medium-to-large automation systems with complex logic, large data sets, or extensive communication requirements.

Question: How do I back up and restore the program on the 1756-L61?
Date Update:28/05/2025
Answer:

You can back up and restore the program on the 1756-L61 using Studio 5000 Logix Designer software. The program can be saved to USB drives, network storage, or external storage media for safekeeping. The backup allows easy recovery in case of failure or system changes.

Question: What is the operating temperature range for the 1756-L61?
Date Update:28/05/2025
Answer:

The 1756-L61 is designed to operate in industrial environments with an operating temperature range of 0°C to 60°C (32°F to 140°F). For environments with extreme temperatures, additional cooling or environmental controls may be required to maintain the system’s reliability.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The 1756-L61 controller is a standard ControlLogix series controller that has been designed by Allen-Bradley/Rockwell Automation. The 1756-L61 controller supports battery backup and its battery can be replaced when it wears out. This controller can handle up to 32 tasks at a time, and it can handle up to 100 programs per task. The 1756-L61 controller can handle up to 250 controller connections and it uses a CompactFlash card for backup memory.

 

Technical Specifications 

 

Condition New / Never Used Surplus
Brand Allen-Bradley
Series ControlLogix
Part Number 1756-L61
Manufacturer Rockwell Automation
Fixed Memory 2, 4, or 8 MB
Module Type Processor Module
Nonvolatile Memory Compact Flash Card 1784-CF128
Maximum I-O 128,000
Communication RS-232 serial port
RS232 Protocols ASCII DF1 full/half-duplex DF1 radio modem DH-485 Modbus via logic
Maximum Analog I-O 4,000
Program Scan Time 0.08 milliseconds
User Memory 2MB
Backplane Current (5Volts DC) 1.2 Amps
Backplane Current (24 Volts DC) 14 milliamps
Vibration 10-500 Hertz
Relative Humidity 5-95 percent
Battery 1756-BA1, 1756-BATM or 1756-BATA

  

 

Information About 1756-L61

The Allen-Bradley 1756-L61 is a ControlLogix controller. It has 2 MB user memory and 478 kb I/O memory available, with an optional non-volatile storage memory of 128 MB with the use of 1784-CF128 CompactFlash memory card. It is a chassis-based controller and can be placed in any available slot of the 1756 ControlLogix chassis. Compatible chassis for this controller are 1756-A4, 1756-A7, 1756-A10, 1756-A13, and the 1756-A17. It has an open-style type of enclosure and can support up to a maximum of 250 controller connections. It also has a built-in RS-232 serial communication port. Supported protocols of the RS232 port are DF1 full/half-duplex, ASCII, DF1 radio modem, Modbus via logic, and DH-485.

It has a maximum digital I/O of 128,000, a maximum analog I/O of 4,000, and a maximum total I/O of 128,000. Controller tasks of the 1756-L61 include 32 tasks, 100 programs per task, and event tasks: all event triggers. The 1756-L61 has various communication options, such as ControlNet, Data Highway Plus, EtherNet/IP, DeviceNet, SynchLink, Remote I/O, and third-party process and device networks. The current draw of the 1756-L61 controller is 1200 mA at 5.1V DC and 14 mA at 24V DC. Power dissipation is at 3.5 W and thermal dissipation is 11.9 BTU/hr. It also has a continuous isolation voltage of 30V and has been tested at 720V DC for 60 s. It has an operating temperature of 0 to 60 Degrees Celsius, a storage temperature of -40 to 85 Degrees Celsius, and a maximum surrounding air temperature of 60 Degrees Celsius. Relative humidity is between 5% to 95% (noncondensing) and its vibration is 2 g at 10 to 500 Hz, with operating and non-operating shocks of 30 g and 50 g respectively.

The Allen-Bradley 1756-L61 is a ControlLogix controller that features an integrated 2MB user memory that enabled the controller to handle up t o128,000 Discrete and 4000 Analog I/O. This controller has an integrated RS232 Communication port that may be configured for ASCII, DF1 full/half-duplex, DF1 radio modem, DH-485 and Modbus via logic.

This controller support implementation of stand-alone and distributed I/O application. Though the module’s allowable 250 connections. Depending on the communication module used, the network connections may vary. It also supports redundancy for increasing system availability which is typically required in critical systems.

This controller also has an integrated motion through the embedded SERCOS interface, Analog input options such as encoder input, LDT input and SSI input. If used with Ethernet communication module, this drive may implement motion over Ethernet I/P.

Supported programming languages of the controller includes Relay Ladder, Structured Text, Function Block Diagram (FBD) and Sequential Function Chart (SFC).

To communicate with the module, RS232 communication cable is required. Appropriate communication for this module are 1756-CP3 or 1747-CP3, right angle connector to controller, straight to serial port, 3 m (9.84 ft). This module uses battery to retain the user program and data within its memory. For a series A controller, appropriate batteries are 1756-BA1, 1756-BATM, 1756-BATA while 1756-BA2 for Series B controller.

This controller is ideal for use in most medium scale processes, within the specified I/O capacity. To enhance the module’s performance, additional modules may be installed such as communication modules, specialty and intelligent modules, and encompass partner modules.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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