Pilz PMCprotego S1, Руководство по эксплуатации

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9.2 Safety characteristic data
9 Technical Details
9-4
SI_Kennzahlen_protego฀S_ein_Geber_MTTF_57_Einl
The฀characteristic฀data฀is฀valid฀when฀using฀a฀motor฀encoder฀with฀an฀
MTTF฀
≥
฀57฀years.
SI_Kennzahlen_protego฀S_ein_Geber_MTTF_Allg
The฀motor฀encoder฀is฀already฀included฀in฀the฀characteristic฀data,฀so฀no฀
more฀calculations฀need฀to฀be฀performed฀for฀the฀"Safe฀Actuator"฀subsys-
tem.
SI_Kennzahlen_protego฀S_ein_Geber_MTTF_57_Bild
SI_Kennzahlen_alle_Sicherheitsfunkt_protego฀S
The฀safety-related฀characteristic฀data฀is฀valid฀for฀all฀safety฀functions.
Si_Kennzahlen_Erläuterung_1
All฀the฀units฀used฀within฀a฀safety฀function฀must฀be฀considered฀when฀cal-
culating฀the฀safety฀characteristic฀data.
9.2.2 Safe actuator with two encoders
Safe฀actuator฀with฀two฀encoders 9- SI_Kennzahlen_protego฀S_zwei_Geber
SI_Kennzahlen_protego฀S1_zwei_Geber
The฀safety฀analysis฀of฀the฀plant฀or฀machine฀may฀necessitate฀a฀second฀
encoder฀(external฀encoder).฀Example:฀Fault฀detection฀in฀the฀mechanical฀
transmission฀path฀between฀motor฀and฀process.
The฀sensor฀subsystem฀consists฀of฀the฀motor฀encoder฀(sensor฀1)฀and฀an฀
external฀encoder฀(sensor฀2).฀A฀separate฀PL฀or฀SIL฀must฀be฀calculated฀for฀
this฀subsystem.฀For฀this฀subsystem฀structure,฀Category฀3฀with฀a฀DC฀of฀
99฀%฀is฀acceptable.฀The฀following฀characteristic฀data฀is฀required฀for฀both฀
sensors฀(motor฀encoder฀and฀external฀encoder):฀MTTF
d
฀and฀
λ
d
฀/
λ
.
SI_Kennzahlen_protego฀S1_zwei_Geber_Bild
Safety characteristic data
Device Operating mode
EN ISO 13849-1
PL EN 954-1
Category EN IEC 62061
SIL CL
PFH [1/h] t
M
[year]
Safety card
Safe฀actuator
PL e
฀(
Cat. 4
)
Cat. 4 SIL CL 3 1.19E-08 20
Subsystem
Safe actuator
PMCprotego D
PMCprotego S1
Motor encoder with MTTF
³
57 years