Phoenix Contact CSS 1.5-1/3-EMC Handleiding (152 Pagina's)

Handleiding

STO – Safe Torque Off

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13.4 Safety parameters

Table 13-1 System conditions

Specification Parameter

Database for failure rates SN 29500

Stop category [IEC/EN 60204-1] 0

Ambient temperature [°C] 60

Table 13-2 Safety parameters for EN ISO 13849-1

Specification Parameter

Performance level e

Category 4

MTTF

d

[years] 399

DC

avg

[%] - diagnostic coverage High (>99)

Table 13-3 Safety parameters for IEC 61508, Part 1-7 and IEC/EN 62061 - high

demand

Specification Parameter

System type (consisting of subsystems) Type A

SIL 3

SILCL 3

HFT - hardware failure tolerance 1

SFF [%] - safe failure fraction 99.9

DC [%] - diagnostic coverage 99.9

PFH [1/h] - probability of a dangerous failure per hour 10.9 * 10

-12

Mission time [years] 20

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