Response time for limit violation with active fault response

The response time describes the time from detection of the limit value violation to activation of the safe state (STO). All response times must be multiplied by the factor 1.002.

Calculation factor

Calculation specification response time

SSx-r

T_ENC_VEL + T_Sys

SLS with parameterized fault response:

  • STO

T_ENC_VEL + T_Sys

  • SS1-t

T_ENC_VEL + T_Sys + SSx-t delay t1 (8706.8)

  • SS1-r

T_ENC_VEL + T_Sys + SSx-r monitoring delay t2 (8706.9) + actual_speed (8700.79)/SSx-r delay a (8706.10) + SSx-r jerk time t3If ramp monitoring = linear, then the jerk time = 0 (8706.11)

SDI

T_ENC_POS + T_Sys

SSR with parameterized fault response:

  • STO

T_ENC_VEL + T_Sys

  • SS1-t

T_ENC_VEL + T_Sys + SSx-t delay t1 (8706.8)

  • SS2-t

T_ENC_VEL + T_Sys + SSx-t delay t1 (8706.8)

  • SS1-r

T_ENC_VEL + T_Sys + SSx-r monitoring delay t2 (8706.9) + actual_speed (8700.79)/SSx-r delay a (8706.10) + SSx-r jerk time t3If ramp monitoring = linear, then the jerk time = 0 (8706.11)

  • SS2-r

T_ENC_VEL + T_Sys + SSx-r delay t2 (8706.9) + actual_speed (8700.79)/SSx-r delay a (8706.10) + SSx-r jerk time t3If ramp monitoring = linear, then the jerk time = 0 (8706.11)

SLI

T_ENC_VEL + T_Sys