Siemens Simatic S7-1500/ET 200MP System Manual page 51

System overview
3.4 CPUs
Example: Production cell with access protection
Automation task:
A laser scanner monitors access to a production area. The maintenance area is secured by
a protective door. Entering the production area or opening the protective door, just like an
emergency stop, results in the shutdown or stopping of the production cell.
①
②
③
④
Figure 3-16
Feature:
Start-up of the system is only possible with unlocked emergency stop, closed protective door
and free protection area of the laser scanner. After activating the emergency stop, opening
the protective door or addressing the protection area, a user acknowledgement is required to
restart production operations again. Access protection to the F-CPU and the safety program
is essential for productive operation.
Solution:
Use of a SIMATIC S7-1500 F-CPU with fail-safe modules in the distributed I/O system
ET 200SP on the PROFINET IO.
The F modules ET 200SP take over the connections for emergency stop, monitoring of the
protective door, monitoring of the access area, the motor and the user acknowledgment.
Perform the programming in the TIA Portal. The safety program runs in the CPU.
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Emergency stop
Laser scanner
Protective door
Control panel with start and acknowledgment key
Production cell with access protection
Automation system
System Manual, 12/2017, A5E03461182-AE