Siemens SIRIUS 3RK3 - Page 114

MSS 3RK3 Basic MSS 3RK3 Advanced
MSS 3RK3 ASIsafe
3SK2 safety relay
- ✓
1)
✓
2)
1) Product version E04 and higher of the basic unit
2) Product version E05 and higher of the basic unit
Application
Interface modules are the interface between the safety relay and a higher-level bus system, e.g.
PROFINET. The safety relay uses them to make diagnostics and status information available to a
higher-level controller. Non-safety-related input and output signals can be exchanged between
the safety relay and a higher-level controller (PLC). In addition, interface modules allow access
with SIRIUS Safety ES for parameterization and diagnostics. In this case, no special PC cable is
needed.
Device power-up PROFINET interface module
Once the hardware has been successfully initialized, the LED test is carried out. Then the
connection between the PROFINET interface module and the safety relay is established.
After successful startup of the device, the PROFINET interface module appears as a PROFINET IO
device on the bus and starts data exchange if the con󹪝guration is correct.
Properties
The 3SK25 PROFINET interface module has the following properties:
• The PROFINET interface module connects the safety relay to PROFINET and thus with a higher-
level programmable logic controller or a PG/PC. Using the 3SK25 PROFINET interface, the
safety relay can be con󹪝gured, tested and the con󹪝guration released via PROFINET.
• Integration into the higher-level control is performed by means of a GSD 󹪝le.
• The properties of the PROFINET interface module are set with Safety ES. The communication
parameters can be set via STEP 7 (TIA Portal), for example.
• The PROFINET interface module is equipped with one system interface for connecting the
safety relay and one device interface for connecting a PC/PG (sealable).
• The PROFINET interface module can be used to link non-safety-related signals of a higher-
level controller with the safety relay logic.
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
114 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006