WAGO I/O System
Device Description 33
750-662/000-004 8FDI 24V PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
3.6.9
Safety Response Time
For the safety response time, take into account the execution times of the
local bus and fieldbus, as well as the cycle time of the safe PLC!
To determine the safety response time, always take the execution times of the
local bus, fieldbus, sensors and actuators and the cycle time of the safe PLC into
account when calculating the safety response time.
3.6.9.1 Safety Response Time of the Digital Inputs
The safety response time of the digital inputs specifies the time between when a
signal change occurs at the digital input and the PROFIsafe telegram at the local
bus is sent. It is part of the overall response time of a safety application.
3.6.9.1.1 Safety Response Time of the Digital Inputs for Single-Channel
Applications
In case of single-channel use, the safety response time depends not only on the
test pulse duration and the input filter time of the input channel in question, but
also on the input filter time of the other input channels. The dependency is
illustrated in the following table:
Table 21: Safety Response Time of the Digital Inputs T(SR) in ms in Single-Channel Operation
Parameter
Short
Circuit
Test
Deacti-
vated
Short Circuit Test Activated
Input filter
time of the
channel in
question
in ms
Maximum
input filter
time of all
channels
in ms
Test pulse duration in ms
0.5
1
2
3
5 10 20 50 100 200
0
<5
9.2 12.8 18.3 29.3 40.3 62.3 117.4 227.5 557.8 1108.5 2209.6
0
<10
10.0 12.8 18.3 29.3 40.3 62.3 117.4 227.5 557.8 1108.5 2209.6
0
10
15.0 16.2 18.3 29.3 40.3 62.3 117.4 227.5 557.8 1108.5 2209.6
0
20
25.0 26.2 27.2 29.3 40.3 62.3 117.4 227.5 557.8 1108.5 2209.6
0
50
55.0 56.2 57.2 59.2 61.2 65.2 117.4 227.5 557.8 1108.5 2209.6
0
100 105.3 106.5 107.5 109.5 111.5 115.5 125.5 227.5 557.8 1108.5 2209.6
0
200 205.6 206.8 207.8 209.8 211.8 215.8 225.8 245.8 557.8 1108.5 2209.6
0.2
<5
9.6 13.2 18.7 29.7 40.7 62.7 117.8 227.9 558.2 1108.9 2210.0
0.2
5
10.4 13.2 18.7 29.7 40.7 62.7 117.8 227.9 558.2 1108.9 2210.0
0.2
10
15.4 16.6 18.7 29.7 40.7 62.7 117.8 227.9 558.2 1108.9 2210.0
0.2
20
25.4 26.6 27.6 29.7 40.7 62.7 117.8 227.9 558.2 1108.9 2210.0
0.2
50
55.4 56.6 57.6 59.6 61.6 65.6 117.8 227.9 558.2 1108.9 2210.0
0.2
100 105.7 106.9 107.9 109.9 111.9 115.9 125.9 227.9 558.2 1108.9 2210.0
0.2
200 206.0 207.2 208.2 210.2 212.2 216.2 226.2 246.2 558.2 1108.9 2210.0