Characteristic safety values STO

Characteristic values according to

IEC 61800-5-2

ISO 13849-1

Tested safety class/standard basis

Safety integrity level 3

Performance level e /
category 3

Probability of dangerous failure per hour (PFH value)

2.5 × 10-9 1/h

Service life

20 years, after which the component must be replaced with a new one.

Proof test interval

> 20 years

-

Safe state

Safe Torque Off (STO)

Safety sub-function

STO, SS1With suitable external control according to IEC 61800-5-2

INFORMATION

In the case of single-pole wiring, the achievable performance level according to ISO 13849-1 is reduced to PL d, and the achievable Safety Integrity Level according to IEC 61800-5-2 is reduced to SIL 2. A fault exclusion is necessary for the wiring between the safety relay and the STO input.