Safe Outputs - Leuze electronic MSI 200 Series User Manual

O0 to O3
Increasing cross-circuit
protection 
(optional)
Test pulses
Leuze electronic
3.4.2

Safe outputs

The safety-related outputs O0 to O3 are designed as digital semiconductor outputs.
ATTENTION: Module defect
Inductive loads can destroy the outputs.
Use a suitable and effective protective circuit.
•
The protective circuit is to be parallel to the load, not parallel to the switching contact.
•
Prevent feedback to the outputs.
•
The outputs are controlled according to the configured safety logic.
The safe outputs are linked to the safety logic in the connection editor of the MSIsafesoft con-
figuration software.
You can find further information on linking the safe outputs in the connection editor in the
help system of the MSIsafesoft configuration software.
To increase shutdown protection and cross-circuit protection, use outputs O0 and O1 in com-
bination with ground-switching outputs O0- and O1-. 
See chapter "Ground-switching outputs" on page 34.
The safe output signals are clocked with a test pulse.
Reduced availability through test pulses
Test pulses can reduce the availability of the machine or system.
Make certain that the connected load does not react to the test pulses.
•
Use an appropriate filter terminal block if necessary.
•
Test behavior at the ground-switching output
The first dynamic test on the ground-switching output occurs up to 60 s after system restart.
Not all errors in the peripherals or in the internal electronics of the outputs are therefore
detected at the switch-on time.
If the switch-on time of the ground-switching outputs is < 60 s, the test takes place after an
accumulated switch-on time of 60 s.
MSI 100 and MSI 200 safety modules
MSI 100/200 32