Table 33: Maximum Duration Of A Deviation From The Valence Rule To Avoid - WAGO 8FDI 24V PROFIsafe 750-662/000-004 Manual

WAGO I/O System
750-662/000-004 8FDI 24V PROFIsafe
Maximum Duration of a Deviation from the Valence Rule to Avoid Unwanted
Discrepancy Errors
To avoid unwanted discrepancy errors and the resulting passivation of the
channel pair during error-free operation, it is necessary to ensure that the
maximum duration of the deviation from the valence rule is smaller than that
specified in the following formula.
Table 33: Maximum Duration of a Deviation from the Valence Rule to Avoid Unwanted Discrepancy
Errors
Δt
nDOffset
Filter
Time in
ms
0
0.2
0.5
1
2
3
5
10
20
50
100
200
Δ���� < (Δt
�������� Discrepancy
Δt : Duration of the deviation from the valence rule
nD
Δt : Discrepancy Time setting in ms
Discrepancy
Δt : maximum duration in ms determined by test pulses and
nDOffset
hardware and software delays from the following table
Short Circuit
Test
Deactivated
0.5
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.5 −2.1 −2.6 −3.6
−1.6 −2.2 −2.7 −3.7
−1.7 −2.3 −2.8 −3.8
−1.9 −2.5 −3.0 −4.0
+ 1 ms) × 0.99913 + Δt
Short Circuit Test Activated
Test pulse duration in ms
1 2 3 5
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.6 −101.7 −201.8
−4.6 −6.6 −11.6 −21.6 −51.7 −101.7 −201.8
−4.7 −6.7 −11.7 −21.7 −51.7 −101.8 −201.9
−4.8 −6.8 −11.8 −21.8 −51.8 −101.9 −202.0
−5.0 −7.0 −12.0 −22.0 −52.1 −102.1 −202.2
Version 1.0.0, valid from HW/SW Version 01/01
Commissioning
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10 20 50 100
Manual
67
200