User manual

44 Publication 1756-RM093F-EN-P - January 2010
Chapter 5 Characteristics of Safety Tags, the Safety Task, and Safety Programs
For Cat 1, Cat 2, and SIL 2 safety functions, the Guard I/O safety
modules need specific configurations within the GuardLogix project.
In this example, inputs 0, 1, 6, 7, 8, 9, 10, and 11 are part of a CAT 1,
2 or SIL 2 safety function. Inputs 2 and 3, as well as 4 and 5 are part of
a CAT 3, CAT 4, or SIL 3 safety function.
Input Configuration
Field Value
Type Single
Discrepancy Time N/A
Point Mode Safety Pulse Test
Test Source Set values based on how the field device is physically wired to the
module. To make sure the test source is properly enabled, open and
view settings on the Test Output tab.
Input Delay Time User input based on field device characteristics.
IMPORTANT
The onboard pulse test outputs (T0…Tx) are typically used with
field devices that have mechanical contacts. If a safety device
that has electronic outputs is used (feeding safety inputs), they
must have the appropriate safety ratings.
IMPORTANT
If you are using GuardLogix Safety Application Instructions, be
sure to configure your safety input modules as single, not
equivalent or complementary. These instructions provide all
dual-channel functionality necessary for PLd (Cat. 3) or
PLe (Cat. 4) safety functions.
Refer to the GuardLogix Safety Application Instruction Set
Reference Manual, publication 1756-RM095
.