Siemens SIMATIC ET 200S Installation And Operating Manual page 98

Fail-Safe Modules
7.4 PM-D F DC24V PROFIsafe power module
Conditions for Achieving Safety Class
The conditions for achieving the respective safety classes are summarized in the following
table.
Table 7-13
Condition
Fail-safe motor starters are expanded with the expansion modules:
•
Power supply of:
•
•
•
•
Fail-safe motor starters are expanded with the expansion modules:
Brake Control xB1 and xB2
Note
The safety classes (safety integrity levels) AK4/SIL2/Category 3 or AK6/SIL3/Category 4 can
only be achieved with the modules specified in the "Condition" column. Configurations with
other modules (for example motor starter DS1-x/RS1x, DS1e-x/RS1e-x, DSS1e-x) are not
permitted for safety-related applications.
7-38
PM-D F DC24V PROFIsafe: Conditions for AK/SIL/Category
Brake Control xB3 and xB4
Exclusively fail-safe F-DS1e-x motor starters and F-RS1e-x,
Fail-safe frequency converters F-FU
Fail-safe connection multipliers F-CM
Fail-safe power/expansion modules PM-D F X1.
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Achievable
AK/SIL/Category
AK4/ SIL2/ Category 3
AK6/ SIL3/Category 4