Renishaw FORTiS-S, Руководство по монтажу функциональной безопасности и руководство по безопасности, Страница: 6 / 31

4
Original instructions
4 Functional Safety data declaration
Product identification
FORTiS-S FS with BiSS Safety and
Siemens DRIVE-CLiQ protocols
MTTF
D
– BiSS Safety protocol
91 years
MTTF
D
– Siemens DRIVE-CLiQ protocol
67 years
Diagnostic coverage Medium (90%)
Category 3
Performance level d
Lifetime/replacement limits 20 years
Safety integrity level
2
Random hardware failures (per hour)
– BiSS Safety protocol
l
S
=
8.60E-07
l
D
=
1.25E-06
l
DD
=
1.13E-06
l
DU
= 1.25E-07
Random hardware failures (per hour)
– Siemens DRIVE-CLiQ protocol
l
S
= 1.11E-06
l
D
=
1.70E-06
l
DD
= 1.53E-06
l
DU
=
1.70E-07
PFD
avg
Not applicable due to continuous
demand mode
PFH (per hour) – BiSS Safety protocol
l
DU
= 1.25E-07
PFH (per hour) – Siemens DRIVE-CLiQ protocol
l
DU
= 1.70E-07
Architectural constraints
Type B
HFT 0
SFF 94%
Hardware safety integrity compliance
Route 1H
Systematic safety integrity compliance Route 1S
Systematic capability SC 2
Demand mode
Continuous
Proof test interval
Not required for continuous demand
mode
IEC 61508 safety data ISO 13849 safety data
The FORTiS-S FS encoder system provides safe position data that supports the following safety
sub‑functions defined by IEC 61800‑5‑2:
X Safe stop 1 (SS1) and Safe stop 2 (SS2)
*
X Safe operating stop (SOS)
*
X Safe limited acceleration (SLA) ≤ 200 m/s 2
X Safe acceleration range (SAR) ≤ 200 m/s
2
X Safe limited speed (SLS) ≤ 4 m/s
X Safe speed range (SSR) ≤ 4 m/s
X Safely limited position (SLP)
*
X Safely limited increment (SLI)
*
X Safe direction (SDI)
X Safe speed monitor (SSM) ≤ 4 m/s.
*
See the safety function restrictions for the safe position figure for each FORTiS‑S FS encoder system
variant.