Renishaw FORTiS-S FS Installation Manual page 6
Enclosed encoder system with multiple readheads
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ISO 13849 safety data
Failure rate data
MTTF
– BiSS Safety serial interface (years)
D
MTTF
– Siemens DRIVE-CLiQ serial interface (years)
D
Diagnostic coverage (DC)
Category
Performance level
Lifetime/replacement limits
The FORTiS-S FS encoder system provides safe position data that supports the following safety sub-functions defined by IEC 61800-5-2:
•
Safe stop 1 (SS1) and Safe stop 2 (SS2)
•
Safe operating stop (SOS)
1
•
Safe limited acceleration (SLA) ≤ 200 m/s
•
Safe acceleration range (SAR) ≤ 200 m/s
•
Safe limited speed (SLS) ≤ 4 m/s
•
Safe speed range (SSR) ≤ 4 m/s
•
Safely limited position (SLP)
1
•
Safely limited increment (SLI)
1
•
Safe direction (SDI)
•
Safe speed monitor (SSM) ≤ 4 m/s
1
See the safety function restrictions for the safe position figure for each FORTiS-S FS encoder system variant.
6
FORTiS-S enclosed encoder system with multiple readheads
2 readheads
3 readheads
142
95
96
65
Medium (90%)
3
d
20 years
1
2
2
4 readheads
5 readheads
6 readheads
71
57
47
49
39
Not permitted
7 readheads
8 readheads
40
35
Not permitted
Not permitted
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