GuardLogix 5580 Controller Hardware
GuardLogix®
5580 controller hardware consists of the following:- A primary controller (1756-L8xES, 1756-L8xESK, 1756-L8xEXTS, or 1756-L8xESXT), which can be used alone in SIL 2 applications
- A safety partner (1756-L8SP, 1756-L8SPK, 1756-L8XTSP, or 1756-L8SPXT), which you can add to the primary controller to create a SIL 3-capable controller
Both the primary controller and safety partner perform power-up and runtime functionaldiagnostic tests of all safety-related components in the controller:
- A primary controller without a safety partner is rated up to SIL 2.
- A primary controller with a safety partner is rated up to SIL 3.
Controller | Cat.No. |
|---|---|
GuardLogix® 5580 controller | 1756-L81ES, 1756-L82ES, 1756-L83ES, 1756-L84ES, 1756-L85ES1, 1756-L8SP, 1756-L81ESK, 1756-L82ESK, 1756-L83ESK, 1756-L84ESK, 1756-L8SPK |
GuardLogix-XT™ controllers | 1756-L81EXTS, 1756-L82EXTS, 1756-L83EXTS, 1756-L84EXTS, 1756-L8XTSP 1756-L81ESXT, 1756-L82ESXT, 1756-L83ESXT, 1756-L84ESXT, 1756-L8SPXT |
You can fill slots of a SIL 2 or SIL 3 system chassis that are not used by the
GuardLogix®
SIL 2 or SIL 3 system with other ControlLogix®
1756 modules. The module must be certified for low voltage and EMC Directives.Primary Controller
The primary controller is the processor that performs standard and safety control functions and communicates with the safety partner for safety-related functions in the
GuardLogix®
control system. The primary controller consists of a central processor, I/O interface, and memory.Safety Partner
To satisfy SIL 3 requirements, you must install a safety partner in the slot immediately to the right of the primary controller. The safety partner is a co-processor that provides 1oo2 architecture for safety-related functions in the system. The 1oo2 system does not run degraded.
Be aware of the following types of fault scenarios:
- If the two processors disagree, the result is a major nonrecoverable fault, which requires you to redownload the application.
- If the two processors cannot communicate, the result is a nonrecoverable safety fault, which may require you to redownload the application.
For information about how to respond to nonrecoverable faults, see the following.
IMPORTANT:
This manual links to
Logix 5000®
Controller and I/O Fault Codes and Syslog Messages, 1756-RD001; the file automatically downloads when you click the link.For SIL 2 requirements, do not install a safety partner. The primary controller configures the safety partner. Only one download of the user program to the primary controller is required. The primary controller controls the operating mode of the safety partner.
Chassis
The chassis provides the physical connections between modules and the 1756
GuardLogix®
system. Any failure, though unlikely, would be detected as a failure by one or more of the active components of the system. Therefore, the chassis is not relevant to the safety discussion.Power Supply
No extra configuration or wiring is required for SIL 2 or SIL 3 operation of the
ControlLogix®
power supplies. Any failure would be detected as a failure by one or more of the active components of the GuardLogix system. Therefore, the power supply is not relevant to the safety discussion.Provide Feedback