The Allen-Bradley 1756-L71S GuardLogix 5570 controller is a high-performance member of the Logix5000 family, designed to merge standard and safety control in one powerful package. Equipped with dual processors, this controller requires pairing with a 1756-L7SP safety module to achieve SIL 3 or Cat. 4/PLe safety standards, making it ideal for critical applications. It features expansive memory capacities, including 2MB of user memory and 1MB of safety memory, and it facilitates robust connectivity with a USB port and support for up to 500 controller connections across ControlNet, DeviceNet, or EtherNet/IP networks. The controller includes an SD card for non-volatile memory storage and can manage up to 128,000 digital I/O and 4,000 analog I/O, ensuring comprehensive system monitoring and control.
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Technical specifications for 1756-L71S
| Manufacturer | Rockwell Automation |
|---|---|
| User Memory | 2 MB |
| Module Type | Processor Module |
| Series | GuardLogix 5570 |
| Part Number/Catalog No. | 1756-L71S |
| Brand | Allen-Bradley |
| Product Type | Programmable Automation Controller |
| Safety Memory | 1 MB |
| Non-volatile memory | 1GB (ships with the controller) |
| Maximum I/O | 128000 |
| Maximum Analog I/O | 4000 |
| No. of standard task | 31 |
| No. of safety task | 1 |
| Programs per task | 100 programs |
| Event Tasks | All triggers |
| Built-in communication | 1 USB port |
| Optional Communication adapters | • EtherNet/IP • ControlNet • DeviceNet |
| Redundancy | Not supported |
| I-O Memory | 0.98 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 Miliamperes |
| Current Draw (5.1 Volts DC) | 800 Miliamperes |
| Power Dissipation | 2.5 Watts |
| Thermal Dissipation | 8.5 BTU per hour |
| Isolation Voltage | 30 Volts Continuous |
| Enclosure | None (Open-Style) |
| UPC | 10885630016464 |
