Response Times - Siemens PM-E F pm DC24V PROFIsafe Installation And Operating Manual

Et 200s distributed i/o system - fail-safe modules
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Response times

Introduction
The response times of the ET 200S F-modules are listed below. The response time of F-
modules is included in the calculation of the F-system response time.
Information about the calculation of F-system response times is available in the
Engineering in SIMATIC S7
Definition of Response Time
For fail-safe digital inputs: The response time defines the interval between a signal transition
at the digital input and the reliable availability of the safety message frame on the backplane
bus.
For fail-safe digital outputs: The response time defines the interval between the receipt of a
safety message frame from the backplane bus and the signal transition at the digital output.
Maximum response time of the PM-E F pm DC24V PROFIsafe
The maximum response time of the PM-E F pm DC24V PROFIsafe (with or without fault) is
equivalent to the maximum internal processing time T
The internal processing times of the electronic PM channel depend on the readback time
parameter setting (see table below).
Table D- 1
PM-E F pm DC24V PROFIsafe (electronic PM channel)
Readback Time
Table D- 2
Measuring Channel
PM-E F pm DC24V PROFIsafe (P1/2
channel; relay; switch on)
PM-E F pm DC24V PROFIsafe (P1/2
channel; relay; switch off)
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
PM-E F pm DC24V PROFIsafe: Internal processing times of the electronic PM channel
Programmed
Limit Frequency
1 ms
32.3 Hz
5 ms
28.6 Hz
10 ms
25.0 Hz
50 ms
12.5 Hz
100 ms
7.7 Hz
200 ms
4.3 Hz
400 ms
2.3 Hz
PM-E F pm DC24V PROFIsafe: Internal processing times of the P1/2 channel
System Description.
Minimum Internal Processing
Time T
4 ms
4 ms
4 ms
4 ms
4 ms
4 ms
4 ms
Minimum Internal
Processing Time T
4 ms
6 ms
.
max
Maximum Internal
Processing Time T
min
Maximum Internal
Processing Time T
min
D
Safety
max
16 ms
20 ms
25 ms
55 ms
90 ms
150 ms
300 ms
max
10 ms
14 ms
201

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