1756-L81EK | Allen Bradley PLC ControlLogix

1756-L81EK

Rated 4.8 with 15 reviews

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.


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1756-L81EK

Revisions: Ser A 
Description: The Allen-Bradley/Rockwell Automation 1756-L81EK controller is a ControlLogix 5580 series standard controller. It can handle up to 32 tasks simultaneously with up to 1000 programs per task. The 1756-L81EK standard controller can communicate through several different networks such as the Synchlink, Remote I/O, DeviceNet, ControlNet, Data Highway Plus, and the Ethernet/IP networks, and it supports several different third-party networks for maximum communication flexibility. Additionally, this controller can support Ethernet communication speeds of 10 Mbps, 100 Mbps, and 1000 Mbps. The 1756-L81EK standard controller weighs about 0.868 pounds and it is open-style equipment that does not have a protective enclosure.
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Request a quote for 1756-L81EK

Description: The Allen-Bradley/Rockwell Automation 1756-L81EK controller is a ControlLogix 5580 series standard controller. It can handle up to 32 tasks simultaneously with up to 1000 programs per task. The 1756-L81EK standard controller can communicate through several different networks such as the Synchlink, Remote I/O, DeviceNet, ControlNet, Data Highway Plus, and the Ethernet/IP networks, and it supports several different third-party networks for maximum communication flexibility. Additionally, this controller can support Ethernet communication speeds of 10 Mbps, 100 Mbps, and 1000 Mbps. The 1756-L81EK standard controller weighs about 0.868 pounds and it is open-style equipment that does not have a protective enclosure.

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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Revisions: Ser A 

Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via UPS, DHL, and TNT
Repairs: We offer repair service for the 1756-L81EK.
Exchange: Exchange credit for your defective unit available.
Conditions: We sell preowned surplus and refurbished parts.

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Rated 4.8 with 15 reviews

    Technical Specifications for 1756-L81EK

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1756-L81EK
SeriesControlLogix
Module TypeControlLogix Controller
I-O MemoryN/A
User Memory3 MB
Maximum I-O128,000
Maximum Analog I-O4,000
Maximum Digital I-O128,000
Current Draw (1.2 Volts DC)5.0 Miliamperes
Current Draw (5.1 Volts)1.20 Miliamperes
Power Dissipation6.2 Watts
Thermal Dissipation 21.2 BTU per hour
Isolation Voltage50 Volts Continuous
EnclosureNone (Open-Style)
ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1756-L81EK
SeriesControlLogix
Module TypeControlLogix Controller
I-O MemoryN/A
User Memory3 MB
Maximum I-O128,000
Maximum Analog I-O4,000
Maximum Digital I-O128,000
Current Draw (1.2 Volts DC)5.0 Miliamperes
Current Draw (5.1 Volts)1.20 Miliamperes
Power Dissipation6.2 Watts
Thermal Dissipation 21.2 BTU per hour
Isolation Voltage50 Volts Continuous
EnclosureNone (Open-Style)
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About 1756-L81EK

The 1756-L81EK controller is a ControlLogix 5580 series controller manufactured by Allen-Bradley.  In the range of products intended for industrial automation, Allen-Bradley has always made high-quality controllers like the 1756-L81EK controller which are a central component in any modern industrial plant. Allen-Bradley controllers are made to be reliable and to provide the users with as much speed and memory capacity as possible, as well as with wider integration and communication capabilities with other machine systems. The 1756-L81EK controller has 3 MB of user memory and it supports 100 Ethernet/IP nodes. Depending on the users’ preferences, the Function Block Diagram (FBD), Ladder Diagram (LD), Structured Text (ST), and the Sequential Function Chart (SFC) programming languages are available to the users.



The Allen-Bradley 1756-L81EK ControlLogix 5580 controller has 2 communication ports which are the USB 2.0 and Ethernet/IP ports. The device is able to communicate over the EtherNet/IP, DeviceNet, ControlNet, Remote I/O, Data Highway Plus, or the SynchLink networks. It supports 32 tasks with 1000 programs for each task. The 1756-L81EK controller, like all ControlLogix controllers, supports electronic keying protection for the cross-checking of the configured and installed hardware in the control system. On the front side of the controller, there is an “OK LED” indicator that glows solid green when the device operates normally, and it is red when the device is performing power-up diagnostics or when the unit is powered up but inoperable. The “RUN LED”  shows the current mode of the controller and it glows green in normal operation mode.

Technical Description of 1756-L81EK

The Allen-Bradley ControlLogix 1756-L81EK is a ControlLogix Controller with N/A I-O Memory, 3 MB User Memory, 128000 Maximum I-O, 4000 Maximum Analog I-O, 128000 Maximum Digital I-O, 6.2 Watts Power Dissipation, and a Conformal Coat.

Repair Services for 1756-L81EK

Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote
Conformal Coat

Revisions for 1756-L81EK

Please refer to the manual for more information about the 1756-L81EK such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-L81EK Ser A
1756-L81EK/A, Series A, Rev A Request Quote
Common misspellings:
  • l756-L81EK
  • 1756-181EK
  • 1756-Lb1EK
  • 1756-L8lEK
  • 1756L81EK

Reviews for 1756-L81EK

Memory

"This AB Processor has 3 Mb Memory. This Allen-Bradley 1756-L81EK comes with an average amount of memory compared to similar processors. " -DO Supply Tech

Dimensions For 1756-L81EK

Size
Input Type
Panel Cutout Height in mm
Panel Cutout Width in mm
Terminal Height in mm
Terminal Width in mm
Terminal Overall Depth in mm
Terminal Mounted Depth in mm

Dimensions For 1756-L81EK

Resolutions For 1756-L81EK

About

Technical Specifications for 1756-L81EK

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1756-L81EK
SeriesControlLogix
Module TypeControlLogix Controller
I-O MemoryN/A
User Memory3 MB
Maximum I-O128,000
Maximum Analog I-O4,000
Maximum Digital I-O128,000
Current Draw (1.2 Volts DC)5.0 Miliamperes
Current Draw (5.1 Volts)1.20 Miliamperes
Power Dissipation6.2 Watts
Thermal Dissipation 21.2 BTU per hour
Isolation Voltage50 Volts Continuous
EnclosureNone (Open-Style)
ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1756-L81EK
SeriesControlLogix
Module TypeControlLogix Controller
I-O MemoryN/A
User Memory3 MB
Maximum I-O128,000
Maximum Analog I-O4,000
Maximum Digital I-O128,000
Current Draw (1.2 Volts DC)5.0 Miliamperes
Current Draw (5.1 Volts)1.20 Miliamperes
Power Dissipation6.2 Watts
Thermal Dissipation 21.2 BTU per hour
Isolation Voltage50 Volts Continuous
EnclosureNone (Open-Style)

About 1756-L81EK

The 1756-L81EK controller is a ControlLogix 5580 series controller manufactured by Allen-Bradley.  In the range of products intended for industrial automation, Allen-Bradley has always made high-quality controllers like the 1756-L81EK controller which are a central component in any modern industrial plant. Allen-Bradley controllers are made to be reliable and to provide the users with as much speed and memory capacity as possible, as well as with wider integration and communication capabilities with other machine systems. The 1756-L81EK controller has 3 MB of user memory and it supports 100 Ethernet/IP nodes. Depending on the users’ preferences, the Function Block Diagram (FBD), Ladder Diagram (LD), Structured Text (ST), and the Sequential Function Chart (SFC) programming languages are available to the users.



The Allen-Bradley 1756-L81EK ControlLogix 5580 controller has 2 communication ports which are the USB 2.0 and Ethernet/IP ports. The device is able to communicate over the EtherNet/IP, DeviceNet, ControlNet, Remote I/O, Data Highway Plus, or the SynchLink networks. It supports 32 tasks with 1000 programs for each task. The 1756-L81EK controller, like all ControlLogix controllers, supports electronic keying protection for the cross-checking of the configured and installed hardware in the control system. On the front side of the controller, there is an “OK LED” indicator that glows solid green when the device operates normally, and it is red when the device is performing power-up diagnostics or when the unit is powered up but inoperable. The “RUN LED”  shows the current mode of the controller and it glows green in normal operation mode.

Technical Description of 1756-L81EK

The Allen-Bradley ControlLogix 1756-L81EK is a ControlLogix Controller with N/A I-O Memory, 3 MB User Memory, 128000 Maximum I-O, 4000 Maximum Analog I-O, 128000 Maximum Digital I-O, 6.2 Watts Power Dissipation, and a Conformal Coat.

Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote
Conformal Coat
Type Lead Time Price Action
Repair Service 2-4 weeks Askenvelope Get Quote
Conformal Coat
Revisions

Please refer to the manual for more information about the 1756-L81EK such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-L81EK Ser A
1756-L81EK/A, Series A, Rev A Request Quote

Common misspellings:
  • l756-L81EK
  • 1756-181EK
  • 1756-Lb1EK
  • 1756-L8lEK
  • 1756L81EK
PDF
Reviews

Reviews for 1756-L81EK

Memory

"This AB Processor has 3 Mb Memory. This Allen-Bradley 1756-L81EK comes with an average amount of memory compared to similar processors. " -DO Supply Tech