Signal Outputs; Clock Outputs - Leuze electronic MSI 200 Series User Manual

M0 to M3
T0 and T1
Cross-circuit detection 
with MSIsafesoft
Leuze electronic
3.4.3

Signal outputs

The non-safety-relevant signal outputs M0 to M3 are designed as digital semiconductor out-
puts.
ATTENTION: Module defect
The signal outputs can be destroyed by incorrect wiring.
Do not connect the signal outputs in parallel.
•
Prevent feedback to the signal outputs.
•
The signal outputs are used to control, e.g., a non-safe PLC or signal units.
Make certain that the GND potential of the signal receiver is the same as the GND potential
of the safety module.
The signal outputs are linked in the connection editor of the MSIsafesoft configuration soft-
ware.
You can find further information on linking the signal outputs in the connection editor in the
help system of the MSIsafesoft configuration software.
3.4.4

Clock outputs

The test pulses output at outputs T0 and T1 are used for cross-circuit detection at the inputs.
Each output is available twice. The output test pulses T0 and T1 are phase-shifted.
The clock outputs are permanently assigned to the inputs. If this assignment is violated, the
safety module detects a cross-circuit.
Cross-circuit detection can take place between T0 and T1 as well as between a test pulse and
24 V.
No cross-circuit detection takes place between inputs with the same test pulse.
To implement cross-circuit detection, the relevant safe inputs must be configured accordingly
using the configuration editor in MSIsafesoft.
The MSIsafesoft configuration software specifies the clock signals to be used as follows:
– For the "even" inputs (I0, I2, I4 ... I18), cross-circuit detection is realized with the test pulse
on T0.
– For the "odd" inputs (I1, I3, I5 ... I19), cross-circuit detection is realized with the test pulse
on T1.
To use cross-circuit detection for two-channel sensors, "even" inputs must therefore always
be combined with "odd" inputs.
Further information on configuring cross-circuit detection via the clock outputs can be found
in the help system of the MSIsafesoft configuration software.
MSI 100 and MSI 200 safety modules
MSI 100/200 33