
6
Installation
and Operation
EDBC250SIO | 2.0
187
Output faults
Note, information
Faults at the outputs provoke a change to the fail-safe state - external fault
The outputs are protected against overload and short circuit, see section
►
4.5.4 Safe Digital Outputs for details. Overload and short circuit cause the
module to change to its fail-safe state - external fault. The module responds in
the same way to external power fed to and cross-faults at the outputs. In case
the outputs are badly adapted to the loads (e.g. if a capacity is too high), test
pulse may not be detected and cause the module to change to its fail-safe state.
Actuators with active GND reference
As long as the parameter settings are taken into account, you are free to connect actuators to
both output connectors (SOX+ and SOX-). This allows external power and cross-faults at the
positive load connectors to be controlled by opening the module's GND reference.
I
Figure 10: Actuators with active GND reference
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