Signal Connections; Safe Inputs; Safe Outputs; Figure 4-4 Signal Connections Msi-Em200-8I4Io - Leuze electronic MSI 200 Series User Manual


I4 to I11
IO0 to IO3 as inputs
IO0 to IO3 as outputs
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4.3

Signal connections

All of the inputs and outputs are connected using pluggable and coded connection terminals.
Supply connection for
clock/signal outputs and
inputs/outputs (A1/A2)
Signals, configurable block by
block as safe inputs or as safe
outputs (IO0 -IO3)
Safe inputs (I4-I11)
Figure 4-4 Signal connections MSI-EM200-8I4IO
4.3.1

Safe inputs

The safe digital inputs are used for the direct connection of safe command devices or safety
sensors.
The safe extension module has eight permanent safe digital inputs I4 to I11. Another four safe
digital inputs IO0 to IO3 can be obtained through appropriate configuration.
The inputs/outputs are configured with the help of the configuration editor of the MSIsafesoft
configuration software. The safe inputs are linked to the safety logic in the connection editor
of the configuration software.
The signal direction (input or output) can only be selected for IO0 to IO3 block by block, i.e., for
all four signals at once.
Conditions for IO0 to IO3 as inputs:
If you use configurable inputs/outputs IO0 to IO3 as inputs, it is mandatory that cross-circuit
detection be implemented with the extension module. To do this, power the affected inputs via
clock outputs TM0 or TM1 of the extension module. 
See also chapter "Clock/signal outputs" on page 39.
You can find further information on configuring and linking the safe inputs in the help system
of the MSIsafesoft configuration software.
There, you will also find information on the topics relevant to the safe inputs: signal redun-
dancy due to dual signals, two-channel sensors and cross-circuit detection.
4.3.2

Safe outputs

Signals IO0 to IO3 can be configured as safety-related outputs and implemented 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 actuated depending on the safety logic, which is executed in the MSI 200
safety module.
MSI-EM200-8I4IO safe extension module
MSI 100/200
Outputs, configurable as clock
outputs or as non-safe signal
outputs 
(TM0, TM1)
Supply connection for the
module via MSI-TBUS on the
rear side
38