Safety Partner; Chassis; Power Supply; Select Safety I/O Device - Allen-Bradley GuardLogix 5570 User Manual

Select Safety I/O Device

A three-position key switch on the front of the primary controller governs the
controller operational modes. The following modes are available:
• RUN
• PROGram
• REMote–this software-enabled mode can be Program, Run, or Test
Figure 2 - Key Switch Positions
Logix557x
RUN FORCE SD

Safety Partner

The safety partner is a coprocessor that provides an isolated second channel
(redundancy) for safety-related functions in the system.
The safety partner does not have a key switch or communication port. Its
configuration and operation are controlled by the primary controller.

Chassis

The ControlLogix chassis provides physical connections between modules and
the GuardLogix controller.

Power Supply

The ControlLogix power supplies listed on
applications. No extra configuration or wiring is required for SIL 3 operation
of the power supplies.
Safety input and output devices, like sensors and actuators, can be connected to
safety I/O on DeviceNet™ or EtherNet/IP™ networks. This connection
controls output devices by a GuardLogix controller system via DeviceNet or
EtherNet/IP communication.
For the most up-to-date information on available safety I/O catalog numbers,
certified series, and firmware revisions, see the safety certificates at
http://www.rockwellautomation.com/rockwellautomation/certification/
safety.page.
Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
OK
1756-L7xS
page 26 are suitable for use in SIL 3
System Overview Chapter 1
17