18
Incremental Encoder FG 41
4 Technical Data
Safety
Functional safety
EN 61508 Part 1-7
S
afety
I
ntegrity
L
evel (SIL)
(1)
SDI, SS1, SS2, SOS, SLP, SLI, SCA
-2
(1)
SLS, SSR, SSM, SLA, SAR
-3
EN ISO 13849-1
P
erformance
L
evel (PL)
(1)
SDI, SS1, SS2, SOS, SLP, SLI, SCA
- PLd / Kat. 3
(1)
SLS, SSR, SSM, SLA, SAR
- PLe / Kat. 3
Startup time
Time between POWER-UP and safe incremental
output
Variant 1
£
30 ms
Variant 2
£
50 ms
PFH / PFHD, "High demand" operating
mode
Variant 1
5,34 * 10-9 1/h
Variant 2
6,57 * 10-9 1/h
Notice
Measuring system is used only in applications with high
or continuous demand rate
MTTF
d
high
Variant 1
1558 a
Variant 2
622 a
(2)
DC
avg
Medium (90 %)
Internal process safety time
Time between occurrence of an F-Error and alarm
indication
Overall system
£
1 ms
Process safety angle
Angle between error occurrence and alarm indication
Through channel-internal self-diagnosis
± 0.3510°, at 1024 periods;
± 0.1760°, at 2048 periods;
± 0.0879°, at 4096 periods;
in relation to the measuring system shaft
T
1
repeat test (proof test)
20 years
(1)
according to EN 61800-5-2
(2)
The assessment occurred in accordance with Note 2 on Table 6 of EN ISO 13849-1
