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2
GFK-2731
Chapter 2 Product description
2-5
2.6
Connection options for actuators depending on the
parameterization
Actuators that meet various safety requirements depending on the parameterization can
be connected to the outputs. For connection examples, please refer to Section 6,
"Connection examples for safe outputs".
The maximum achievable SIL/SIL CL/Cat./PL is specified in the table.
In order to achieve this:
– Observe the information in the connection examples (see Section 6, "Connection
– Observe the requirements of the standards with regard to the external wiring and the
actuators to be used to achieve a SIL/SIL CL/Cat./PL (see "Measures required to
achieve a specific safety integrity level" on page 6-3)
Key:
Output OUT0 to OUT3
"Output" parameterization
Single-channel
Two-channel
Test pulses
Any
ON/OFF*
Achievable category
SIL 2/SIL CL 2/Cat. 3/PL d SIL 3/SIL CL 3/Cat. 4/PL e
For connection example, see
page
*
If the test pulses are disabled, a cross circuit between the outputs is only detected
if the output is enabled.
To achieve Cat. 3, two-channel actuators are usually used.
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