Siemens PM-E F pm DC24V PROFIsafe Installation And Operating Manual page 202

Et 200s distributed i/o system - fail-safe modules
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Response times
Maximum response time of the PM-E F pp DC24V PROFIsafe
The maximum response time of the PM-E F pp DC24V PROFIsafe (with or without fault) is
equivalent to the maximum internal processing time T
Table D- 3
Measurement channel
PM-E F pp DC24V PROFIsafe (P1/2
channel; relay; switch on)
PM-E F pp DC24V PROFIsafe (P1/2
channel; relay; switch off)
Maximum response time of the PM-D F DC24V PROFIsafe
The maximum response time of the PM-D F DC24V PROFIsafe (with or without fault) is
equivalent to the maximum internal processing time T
Table D- 4
Measuring Channel
PM-D F DC24V PROFIsafe
(electronic PP channel)
Maximum response time of the EM 4/8 F-DI DC24V PROFIsafe
Formula for calculating the maximum response time if there is no fault:
Maximum response time
without fault = T
*: Short-circuit test time = 2 x input delay
Program the input delay and short-circuit test in
Table D- 5
Sensor evaluation
1oo1 and 1oo2
Maximum response time if a fault occurs:
The table below contains the maximum response times of the F-DI module when a fault
occurs, depending on the parameter settings in
Table D- 6
Input Delay
Short-circuit test deactivated
Short-circuit test activated
**: The response times with 1oo2 evaluation also depend on the configured discrepancy behavior:
Provide 0 value: The times defined in the table above apply.
Provide last valid value: The times in the table above are extended by the programmed discrepancy
time.
202
PM-E F pp DC24V PROFIsafe: Internal processing times
PM-D F DC24V PROFIsafe: Internal processing times
Minimum Internal Processing
+ input delay + short-circuit test time*
max
EM 4/8 F-DI DC24V PROFIsafe: Internal Processing Times
EM 4/8 F-DI DC24V PROFIsafe: Maximum Response Time if a Fault Occurs
0.5 ms
18 ms
29 ms
.
max
minimum internal processing
time T
min
4 ms
6 ms
.
max
Time T
min
3 ms
STEP 7
.
minimum internal processing
time T
min
5 ms
STEP 7
and on the sensor evaluation.
1oo1 evaluation
3 ms
15 ms
20 ms
32 ms
40 ms
91 ms
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
maximum internal
processing time T
max
10 ms
12 ms
Maximum Internal Processing
Time T
max
9 ms
maximum internal
processing time T
max
11 ms
1oo2 evaluation**
0.5 ms
3 ms
15 ms
12 ms
14 ms
26 ms
13 ms
20 ms
56 ms

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