Product image is representative; revision or series may vary. Contact us to request a specific version.
1756-L81EK
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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Technical specifications for 1756-L81EK
| Manufacturer | Allen Bradley |
|---|---|
| Category | PLCs |
| Product Line | ControlLogix |
| Part Number | 1756-L81EK |
| Weight | 0.56 lbs (0.26 kg) |
| Module Type | ControlLogix Controller |
| I-O Memory | N/A |
| User Memory | 3 MB |
| Maximum I-O | 128,000 |
| Maximum Analog I-O | 4,000 |
| Maximum Digital I-O | 128,000 |
| Current Draw (1.2 Volts DC) | 5.0 Miliamperes |
| Current Draw (5.1 Volts) | 1.20 Miliamperes |
| Power Dissipation | 6.2 Watts |
| Thermal Dissipation | 21.2 BTU per hour |
| Isolation Voltage | 50 Volts Continuous |
| Enclosure | None (Open-Style) |
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.
| Revision Part # | Also known as | |
|---|---|---|
| 1756-L81EK Ser A | 1756-L81EK/A, Series A, Rev A | |
| Don't see your particular revision? Contact us now. | ||
- 1756-L8IEK
- 1756-LB1EK
- 1756L81EK
- 1756L8IEK
- 1756LB1EK
- I756-L81EK
- I756-L8IEK
- I756-LBIEK
- I756L81EK
- I756L8IEK
- I756LBIEK
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.