Brand: Allen-Bradley/Rockwell Automation
Series: ControlLogix
Part number: 1756-l81ES
Product type: GuardLogix 5580 Safety controller
Communication: USB, Ethernet
The Allen-Bradley 1756-L81ES controller is the Allen-Bradley GuardLogix 5580 safety controller. It can perform 31 standard tasks and 1 security task. Each task supports 1000 programs. Integrated communication ports on the 1756-L81ES controller include a USB port and an Ethernet port. The USB port is USB 2.0 compliant and supports a 12 Mbps data rate. Ethernet ports can support data rates of 10/100 and 1000 Mbps. Optional communication modules for the 1756-L81ES controller include ControlNet, DeviceNet, Remote I/O, DH+, and SynchLink modules. The maximum number of Ethernet/IP nodes supported is 100.
The 1756-L81ES controller supports the following programming languages: ladder diagram, structured text, function block diagram and sequential function diagram languages. Controller redundancy is not supported. The user memory capacity on the module is 3 MB and the safe memory capacity is 1.5 MB. The maximum number of digital and analog I/ OS supported is 128,000 and 4000, respectively. The 1756-L81ES controller can support a total of 128,000 I/ OS. The module comes with 2 GB of integrated non-volatile memory. The module consumes 5 mA at 1.2 volts DC and 1.2 amps at 1.5 volts DC. The power of heat dissipation during operation is 6.2 watts. The module weighs approximately 0.394 kg. The 1756-L81ES controller can be installed only when there is an empty slot in the chassis.
The Allen-Bradley 1756-L81ES is a GuardLogix controller with 3 MB of integrated user memory and 1.5 MB of safe memory, similar to the ControlLogix controller, which has a maximum I/O capacity of 128,000. It has integrated communication ports for USB and Ethernet.
Unlike the ControlLogix controller, this GuardLogix controller has 1756-SD2 integrated removable memory, which is the only compatible memory for this controller module.
It has an intuitive diagnostic display that provides a text description of the status of the module.
With this controller, Safety Instrument Class (SIL) 2 is achieved. This module supports a mix of standard ControlLogix and secure I/O, and can also implement topologies that standard ControlLogix can support.
