Siemens 4 F-DO DC24V/2A PROFIsafe - Maximum response time of the EM 4;8 F-DI DC24 V PROFIsafe

Response times
ET 200S Distributed I/O System - Fail-Safe Modules
202 Installation and Operating Manual, 08/2008, A5E00103686-07
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
max
.
Table D- 3 PM-E F pp DC24V PROFIsafe: Internal processing times
Measurement channel minimum internal processing
time T
min
maximum internal
processing time T
max
PM-E F pp DC24V PROFIsafe (P1/2
channel; relay; switch on)
4 ms 10 ms
PM-E F pp DC24V PROFIsafe (P1/2
channel; relay; switch off)
6 ms 12 ms
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
max
.
Table D- 4 PM-D F DC24V PROFIsafe: Internal processing times
Measuring Channel Minimum Internal Processing
Time T
min
Maximum Internal Processing
Time T
max
PM-D F DC24V PROFIsafe
(electronic PP channel)
3 ms 9 ms
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
max
+ input delay + short-circuit test time*
*: Short-circuit test time = 2 x input delay
Program the input delay and short-circuit test in
STEP 7 .
Table D- 5 EM 4/8 F-DI DC24V PROFIsafe: Internal Processing Times
Sensor evaluation minimum internal processing
time T
min
maximum internal
processing time T
max
1oo1 and 1oo2 5 ms 11 ms
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
STEP 7 and on the sensor evaluation.
Table D- 6 EM 4/8 F-DI DC24V PROFIsafe: Maximum Response Time if a Fault Occurs
1oo1 evaluation 1oo2 evaluation**
Input Delay 0.5 ms 3 ms 15 ms 0.5 ms 3 ms 15 ms
Short-circuit test deactivated 18 ms 20 ms 32 ms 12 ms 14 ms 26 ms
Short-circuit test activated 29 ms 40 ms 91 ms 13 ms 20 ms 56 ms
**: 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.