For output modules, sourcing safety outputs can be configured as point operation type single or dual. The selected type configures the safety module to treat the outputs individually or as a pair:
A single configuration allows the outputs to turn on and off individually and to fault independently.
A dual configuration verifies that safety task logic operates both outputs as a pair. If one output has a module fault, the other output goes to the safe state.
Output Point Operation Types
Bipolar outputs have no configuration for point operation type and must operate as a sinking sourcing pair.
IMPORTANT:
The point operation type affects the PFH safety rating of the module. The PFH is the average frequency of a dangerous failure per hour.
