7
Connection Examples
EDBC250SIO | 2.0
95
7.7
Connecting Two Parallel Actuators to One Safe Output
CAUTION
Consideration of the parametrization
For single-channel applications (inputs and outputs), the test pulse frequency
must be adapted to the application. It must be ensured that for applications in
which a frequent change of state occurs, the test pulse frequency is selected at
least 100 times greater than the state change time of the application.
See 6.3.2 FSoE Parameters.
The wiring example illustrates how one output of the Safety I/O-module is used to actuate a
safety function.
Use a two-channel actuator to achieve the safety integrity levels of the table below. Before
connecting it to the I/O module, verify that short circuits and cross-faults on the connecting
lead are excluded.
Note, information, Picture a)
Fault prevention required!
Take the actions required to prevent a short circuit or cross-fault on the lead
connecting the Safety I/O-module's contact and the safe actuators.
Note, information, Picture b)
To detect errors in the wiring, it is necessary to activate the test pulses for the
corresponding output.
I
I
a)
b)