Siemens SIMATIC S5-95F - Page 84

S5-95F Installing and Connecting the Basic System
Example: Failsafe Connection of an Actuator with Direct Triggering (Type K)
Connect the 24 V DC load voltage (L+ potential to terminal 1, L- potential to terminal 10).
With direct triggering, the load voltage for subunit A and for subunit B must be supplied by one
voltage source.
Connect the actuator to the output selected.
The actuator receives the L+ potential from the first subunit and the L- potential from the other
subunit (P-M triggering). When connecting the DQ, make sure that one bit is assigned different
terminals in "A" and "B".
Figure 4-12. Connection of a Failsafe Actuator
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EWA 4NEB 812 6210-02 4-15