Response times
ET 200S Distributed I/O System - Fail-Safe Modules
204 Installation and Operating Manual, 08/2008, A5E00103686-07
Maximum response time of outputs:
The maximum response time of the EM 4 F-DI/3 F-DO DC24V PROFIsafe (with or without
fault) is equivalent to the maximum internal processing time T
max
.
The internal processing times of the electronic PM channel depend on the readback time
parameter setting (see table below).
Table D- 9 EM 4 F-DI/3 F-DO DC24V PROFIsafe: Internal Processing Times
EM 4 F-DI/3 F-DO DC24V PROFIsafe (electronic PM channel)
Programmed
Readback Time
Limit Frequency Minimum Internal Processing
Time T
min
Maximum Internal
Processing Time T
max
1 ms 37.0 Hz 4 ms 13 ms
5 ms 32.2 Hz 4 ms 14 ms
10 ms 27.7 Hz 4 ms 20 ms
50 ms 13.2 Hz 4 ms 32 ms
100 ms 7.9 Hz 4 ms 50 ms
200 ms 4.4 Hz 4 ms 75 ms
400 ms 2.3 Hz 4 ms 140 ms
Maximum response time of the EM 4 F-DO DC24V/2A PROFIsafe
The maximum response time of the EM 4 F-DO DC24V/2A PROFIsafe (with or without fault)
is equivalent to the maximum internal processing time T
max
.
The internal processing times of the electronic PM channel depend on the readback time
parameter setting (see table below).
Table D- 10 EM 4 F-DO DC24V/2A PROFIsafe: Internal Processing Times
EM 4 F-DO DC24V/2A PROFIsafe (electronic PM channel)
Programmed
Readback Time
Limit Frequency Minimum Internal Processing
Time T
min
Maximum Internal
Processing Time T
max
1 ms 32.3 Hz 4 ms 16 ms
5 ms 28.6 Hz 4 ms 20 ms
10 ms 25.0 Hz 4 ms 25 ms
50 ms 12.5 Hz 4 ms 55 ms
100 ms 7.7 Hz 4 ms 100 ms
200 ms 4.3 Hz 4 ms 150 ms
400 ms 2.3 Hz 4 ms 300 ms
Maximum response time of the EM 1 F-RO DC24V/AC24..230V/5A
The maximum response time of the EM 1 F-RO DC24V/AC24..230V/5A (with or without
fault) is equivalent to the total of:
● the maximum response time of the fail-safe output used to activate the F-RO module
● plus the relay switching or release time of the F-RO module
See also
Properties of the 4/8 F-DI 24 VDC PROFIsafe Digital Electronic Module (Page 105)
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