Response Times; Safety Response Time Of Analog Inputs For Single-Channel Applications; Table 22: Safety Response Time Of The Analog Inputs T - WAGO 753-668/000-004 Manual

WAGO-I/O-SYSTEM 750
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
3.6.10

Response Times

For the safety response time, take into account the execution times of the
local bus, fieldbus, sensors and actuators, as well as the cycle time of the
safe PLC!
To prevent personal injury or property damage, always take the execution times
of the local bus, fieldbus, sensors and actuators, as well as the cycle time of the
safe PLC into account when calculating the safety response time.
3.6.10.1 Safety Response Time of Analog Inputs for Single-Channel
Applications
The safety response time of the analog inputs (T
duration between a signal change and provision of this response in the input
process image of the PROFIsafe telegram on the local bus. The signal can
change on a single-channel analog input or on two dual-channel analog inputs
(t ).
1
The safety response time of the analog inputs depends on the parameterized
sampling frequency and smoothing. Changing these two parameters results in a
change in the safety response time of the analog inputs. The safety response
time in case of error is never greater than the safety response time in error-free
case.
The following table shows the safety response times for all combinations of the
"Sampling Frequency" and "Smoothing" parameters.

Table 22: Safety Response Time of the Analog Inputs T

and Smoothing
T
SR
100
1 29 ms
2 36 ms
4 54 ms
8 90 ms
16 163 ms
32 309 ms
64 601 ms
) indicates the maximum
SR
Depending on the Sampling Frequency
SR
Sampling frequency in Hz
60
40 ms
55 ms
86 ms
148 ms
270 ms
514 ms
1005 ms
Version 1.0.0, valid from HW/SW Version 01/01
Device Description
50
46 ms 200 ms
64 ms 291 ms
101 ms 473 ms
173 ms 838 ms
319 ms 1567 ms
611 ms 3024 ms
1194 ms 5940 ms
Manual
39
10