| Feature |
MSI-s |
MSI-sx |
| Maximum safety category (EN 954-1) |
4 |
4 |
| Stop category (IEC-, EN 60204-1) |
0 |
0 |
| Max. number of AOPDs, Type 2, or Emergency Stop command devices (Cat. 2) |
2 |
4 |
| Max. number of AOPDs, Type 4, or Emergency Stop command devices (Cat. 4) |
1 |
2 |
| Cross circuit monitoring |
x |
x |
| Start/restart interlock |
x |
x |
| Static relay monitoring |
x |
x |
| Dynamic relay monitoring |
x |
x |
| RS 232 diagnostics interface |
x |
x |
| Status output "system error" |
x |
x |
| Warning "relay replacement necessary" |
|
x |
| Secondary switching device (SSD) output |
|
x |
