The Allen-Bradley 1756-L81E is a sophisticated programmable automation controller from the ControlLogix 5580 series, renowned for its advanced functionality and modern connectivity features, making it an ideal choice for migrating legacy systems like the PLC5 and SLC500. Positioned on the lower spectrum of the 1756-L8 series, this controller offers 3MB user memory along with a 2GB non-volatile memory via the 1784-SD2 SD card, efficiently managing up to 128,000 discrete I/O signals and 4000 analog signals without requiring battery backup due to its eco-friendly energy storage. Designed for versatile deployment, it fits seamlessly into various ControlLogix chassis and is compatible with an extensive range of power supplies, supporting up to 60 Ethernet/IP nodes, withstanding harsh industrial conditions with certifications including IECx, CSA, and c-UL-us, and a robust shock and vibration tolerance.
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Technical specifications for 1756-L81E
| Manufacturer | Rockwell Automation |
|---|---|
| Isolation Voltage | 50 Volts Continuous |
| Power Dissipation | 6.2 Watts |
| Current Draw (5.1 Volts) | 1.20 Miliamperes |
| Current Draw (1.2 Volts DC) | 5.0 Miliamperes |
| User Memory | 3 MB |
| Module Type | ControlLogix Controller |
| Part Number/Catalog No. | 1756-L81E |
| Enclosure | None (Open-Style) |
| Brand | Allen-Bradley |
| Communication interfaces | One (1) Ethernet; One (1) USB |
| Chassis | 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K,1756-A17, 1756-A17 K Series B, Series C |
| Standard Power Supply | 1756-PA50, 1756-PA72, 1756-PA72K, 1756-PA75, 1756-PA75K, 1756-PB50, 1756-PB72, 1756-PB72K, 1756-PB75, 1756-PB75K, 1756-PH75, 1756-PC75 |
| Redundant Power Supply | 1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756-PB75RK, 1756-PSCA2, 1756-PSCA2K |
| Series | ControlLogix |
| I-O Memory | N/A |
| Maximum I-O | 128,000 |
| Maximum Analog I-O | 4,000 |
| Maximum Digital I-O | 128,000 |
| Thermal Dissipation | 21.2 BTU per hour |
