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Two Fail-Safe Digital Outputs
In addition to the voltage buses P1 and P2, the power module has two fail-safe digital
outputs DO0 and DO1. You can achieve SIL3/Category 4/PLe with these outputs.
Figure 7-1
Power Module Supplies for Standard ET 200S Modules
Always connect the 24 VDC supply for the standard ET 200S modules on the PM-
E F pm DC24V PROFIsafe. Otherwise, the outputs of DO modules may exhibit safety
critical behavior.
When supplying standard DO modules, always use the terminal modules to supply the
actuators (actuator feedback on the DO module).
Refer also to the section "Switching grounded loads".
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
Wiring diagram of the PM-E F pm DC24V PROFIsafe
WARNING
WARNING
7.2 PM-E F pm DC24V PROFIsafe Power Module
Fail-Safe Modules
63
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