20
Festo — MSE6-C2M — 2022-08b
Functions
In the blocking state, the amount of the pressure change value is compared to the upper pressure
change critical limit DP2_OGR and monitored to determine whether the critical limit has been
exceeded. Once critical limit monitoring is activated, a diagnostic message is generated if the param-
eter ABS(DP2) is
>
DP2_OGR. Information on the resolution of the pressure measurement range
12.2 Technical data, pneumatic.
DT synchronisation and DP2 OGR critical limit monitoring
The time diagrams show the DT synchronisation and DP2 OGR critical limit monitoring.
Pressure
P2
DT
t
0
DT
DT
DT
DT
DT
DP2
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
Blocking
DT synchronisation on
switching on the shut-off valve at t = t
4
0
Pressure
change
DP2
DP2 =
P2(t
1
)
- P2(t
0
)
DP2 =
P2(t
2
)
- P2(t
1
)
DP2 =
P2(t
3
) - P2(t
2
)
DP2 =
P2(t
5
)
- P2(t
4
)
DP2 =
P2(t
6
)
- P2(t
5
)
t
DP2 =
P2(t
7
)
- P2(t
6
)
DP2 signal extension
for DT synchronisation from t = t
4
DP2_OGR
Amount
of
pressure
change:
ABS(DP2)
t
No ABS(DP2) calculation
Diagnostics
message
t
Upper critical limit
exceeded:
ABS(DP2) > DP2_OGR
Message
active
Fig. 10: DT synchronisation and DP2 OGR critical limit monitoring
