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AS-i Speed Monitor
Product Description
5.2
Safety relevant data (VBA-2E-KE4-ENC-S)
Identification data
Safety category
Performance Level (PL)
Safety Integrity Level (SIL)
Usage time (TM) [year]
Max. power-on time [month]
PFH
[1/h]
D
Max. system response time [ms] as a function of frequency limit
(2)
45
15
700 ms
35
45
The diagram shows the function of the highest input frequencies at which the
code sequence is reliably generated (lower curve) and the function of the lowest
input frequencies at which the code sequence is reliably not generated (upper
curve) as a function of the parameterized frequency limit.
f
1015 Hz
limit
f
45 Hz
1015 Hz 140 ms
limit
f
45 Hz 700 ms
limit
(3)
(1)
140 ms
100 ms
limit frequency [Hz]
1015
Value
Standard
EN 954-1
4
EN ISO 13849-1
e
EN ISO 13849-1
3
EN 62061
20
EN ISO 13849-1
12
EN 62061
-09
EN 61508, EN 62061
2,77 x 10
100 ms
Frequency limit for 0-sequence
f
f
=
+ 20Hz)
(1)
in
limit
Frequency limit for safety code sequence
f
35 Hz
900 Hz
limit
f
f
=
- 20Hz)
(2)
in
limit
980 Hz f
limit
= f
f
- 100Hz)
(3)
in
limit
Tab. 5-1.
100.5%
*
99.5%
*
99.5%
*
Tab. 5-2.
11
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