3.6.10.1.1 Safety Response Time Of Analog Inputs In An Error-Free Case; Figure 9: Definition Of The Safety Response Time Of Analog Inputs In An Error-Free Case - WAGO 753-668/000-004 Manual

40 Device Description

3.6.10.1.1 Safety Response Time of Analog Inputs in an Error-Free Case

In the error-free case, the response to the signal change is that the input process
value of the input channel passes a threshold. The input process value
approaches the final value asymptotically after the signal change of the analog
input signal. The response time therefore increases exponentially, the closer the
threshold is to the final value. In response to the signal change, reaching 90% of
the difference between the input process value before the signal change and the
final value (t
Safety Response Time of the Analog Inputs in an Error-Free Case").

Figure 9: Definition of the Safety Response Time of Analog Inputs in an Error-Free Case

The safety response times are listed in the table "Safety Response Time of the
Analog Inputs T
Manual
Version 1.0.0, valid from HW/SW Version 01/01
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
) is defined as the threshold value (see Figure "Definition of the
2
Depending on the Sampling Frequency and Smoothing."
SR
WAGO-I/O-SYSTEM 750