STO safety sub-function

The following table shows the technical data of the STO safety sub-function.

The safe digital inputs F_STO_P1 and F_STO_P2 correspond to type 3 according to IEC 61131‑2.

Reference potential for the F_STO_P1 and F_STO_P2 is F_STO_M (contact at terminal X9:11).

 

Terminal

Technical data

STO safety contact

X9

 

Electrical data of the safe digital inputs F_STO_P1, F_STO_P2

 

Minimum

Typical

Maximum

Input voltage range

X9:1 and X9:3

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 at DC 24 V:

F_STO_P1

 

–

150 mW

200 mW

F_STO_P2

 

–

150 mW

200 mW

SumEach drive unit always requires a power consumption of 300 mW.

 

–

300 mW

400 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

Maximum cable length

 

100 m