I E16x442 Rev: 00
Page 9 of 73
1.6.
Safety Data
1.6.1.
Safety Data IEC61508; SIL2
System Type B; HFT = 1; Architecture 2oo3, Service Time 20 years
PFDavg
= 1,81*10
-4
at
T1
(Proof Check Interval) = 20 years
1.7.
External Tests
1.7.1.
External tests during normal operation by PLC or operator
The trip release ability of a 2oo3 solenoid valve block can be verified by external.
1.7.2.
Test of 2oo3 solenoid valve block
Test can only be performed if the Monitors are not in trip status.
The test is performed for each trip-line separately by control signals Test of
Trip-Line I, II, III. The response of the 2oo3 solenoid valve block must be checked by the PLC
resp. the operator.
Note:
Test of two or three trip-lines at the same time will release trip of the machine.