STO safety sub-function
The following table shows the technical data of the STO safety sub-function for devices with the CSO safety option.
The safe digital input F_STO_P corresponds to type 3 according to IEC 61131‑2.
The reference potential for F_STO_P is STO_M (contact at terminal X6:2).
| Terminal | Technical data | ||
|---|---|---|---|---|
STO safety contact | X6 | – | ||
Electrical data of safe digital input F_STO_P |
| Minimum | Typical | Maximum |
Input voltage range | X6:1 | DC -3 V | DC 24 V | DC 30 V |
Input capacitance against STO_M |
| – | 300 pF | 500 pF |
Input capacitance against GND |
| – | 300 pF | 500 pF |
Power consumption of F_STO_P at DC 24 V: |
| – | – | 150 mW |
Input voltage for ON state (STO) |
| DC 11 V | – | – |
Input voltage for OFF state (STO) |
| – | – | DC 5 V |
Permitted leakage current of the external safety controller |
| – | – | 1 mA |
Minimum voltage rise |
| 1 V/ms | ||
MCX91A-.../CSO... |
| The following terminals are connected internally:
Due to the current carrying capacity, a maximum of 10 devices can be connected to one another via terminal X6. | ||
Connection contacts |
| Plug connector - 1 conductor: 0.25 – 1.5 mm2 - 2 conductors: 0.25 – 0.5 mm2 (Twin conductor end sleeve) | ||
Maximum cable length |
| 30 m | ||
