Safety programmable controller MELSEC-QS Series

The safety programmable controller is compliant with international safety standards, EN ISO 13849-1 category 4/PL e and IEC 61508 SIL 3. It is ideal for medium to large-scale safety control systems. Ladder programs and certified safety function blocks^*1 realize flexible programming.

MELSEC-QS series system configuration

* 1. They can be used to structure EN ISO 13849-1 category 4/Ple and IEC 61508 SIL 3 safety applications.
* 2. Number of input points: 8 points (double wiring), No. of output points: 4 points (source + sink type)
* 3. Number of input points: 8 points (double wiring)
* 4. Number of output points: 4 points (source + sink type)

Reducing costs while increasing diagnostic capabilities and system flexibility

The MELSEC-QS series solves the complicated wiring and time-consuming troubleshooting issues associated with previous safety relay systems.

Programming with ladder diagrams and safety FBs

GX Developer

Use GX Developer to start up MELSEC-QS series safety control systems (programming, monitoring, diagnosis, and debugging). GX Developer can configure CC-Link Safety, CC-Link IE field network and safety remote station parameters.

Safety FB (Function Block)

Functions that are frequently used for creating safety programs are provided as safety FBs. The safety FBs have been certified.