Safety Relevant Data (Vba-2E2A-Ke4-Enc/Ssi-S) - Pepperl+Fuchs AS-i Manual

AS-i Speed Monitor
Product Description
5.3

Safety relevant data (VBA-2E2A-KE4-ENC/SSI-S)

Identification data
Safety category
Performance Level (PL)
Safety Integrity Level (SIL)
Usage time (TM) [year]
Max. power-on time [month]
1
PFH [1/h]
D
Max. system response time [ms] depending on the frequency limit value
AS-i input → local output
Incremental encoder → local output
Incremental encoder → AS-i
SSI → local output
SSI → AS-i
1. The failure rates are specified for a maximum ambient temperature of 50° C.
Information!
Safety categories SIL 3, Cat. 4, PLe can be met for TTL and SSI encoders only if both
connected encoders are monitoring the same axis and the speed monitor is configured
for this mode.
12
Value Standard
4 EN ISO 13849-1
e EN ISO 13849-1
3 EN 62061
20 EN ISO 13849-1
12 EN 62061
EN 62061, IEC 61508
-9
5,08 x 10
40 ms
2
+ t + 15 ms
f Filter
Limit
2
+ t + 20 ms
f Filter
Limit
t + t + 10 ms
Watchdog Filter
t + t + 15 ms
Watchdog Filter
Tab. 5-3.