Table 33: Minimum Duration Of A Deviation From The Valence Rule To Detect - WAGO 750 Manual
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WAGO I/O System 750
753-661/000-004 4FDI 24V PROFIsafe
Minimum Duration of a Deviation from the Valence Rule to Detect a
Discrepancy Error
A discrepancy error can be detected as soon as the deviation from the valence
rule is greater than the value determined in section "Maximum Duration of a
Deviation from the Valence Rule to Avoid Unwanted Discrepancy Errors."
However, detection of a discrepancy error is only ensured if the deviation of the
input values from the valence rule lasts longer than the value determined by the
following formula.
Table 33: Minimum Duration of a Deviation from the Valence Rule to Detect a Discrepancy Error
Δt
DOffset
Filter
Time in
ms
0
0.2
0.5
1
2
3
5
10
20
50
100
200
����
≥ (Δt
����
Discrepancy
Δt
:
Duration of the deviation from the valence rule
D
Δt
:
Discrepancy Time setting in ms
Discrepancy
Δt
:
maximum duration in ms determined by test pulses and
DOffset
hardware and software delays from the following table
Short Circuit
Test
Deactivated
0.5
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.6
2.2
2.7
1.7
2.3
2.8
1.8
2.4
2.9
2.0
2.6
3.1
+ 1 ms) × 1.00087 + Δt
Short Circuit Test Activated
Test pulse duration in ms
1
2
3
5
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.7
4.7
6.7
11.7
3.8
4.8
6.8
11.8
3.9
4.9
6.9
11.9
4.1
5.1
7.1
12.1
Version 1.0.0, valid from HW/SW Version 01/01
Commissioning
����������������������������
10
20
50
100
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.7 101.8 201.9
21.7
51.8 101.8 201.9
21.8
51.8 101.9 202.0
21.9
51.9 102.0 202.1
22.1
52.2 102.2 202.3
Manual
71
200
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