WAGO -I/O-SYSTEM 750 Series Manual page 86

86 Commissioning
• No antivalent (opposing) states are detected with an antivalent valence rule
Activate discrepancy time monitoring only after the set input filter time has
elapsed!
Discrepancy time monitoring is only activated if the input filter time has expired.
During error-free operation, the input signals will assume acceptable signal states
within the discrepancy time period. Discrepancy time monitoring is started and
also ends before the discrepancy time expires.
Set the value of the discrepancy time parameter such that both digital inputs can
complete the change of signal voltage before the discrepancy time has elapsed.
Behavior of the PROFIsafe I/O module during discrepancy time monitoring
If the process image of the PROFIsafe I/O module transfers a 1-signal and a
deviation of the input signal states from the valence rule is then detected,
discrepancy time monitoring is started. Discrepancy time monitoring is not
terminated until a 0-signal is detected.
If the process image of the PROFIsafe I/O module transfers a 0-signal due to the
input signal states and a deviation of the input signal states from the valence rule
is then detected, discrepancy time monitoring is started. Discrepancy time
monitoring is not terminated until either a 0-signal or a 1-signal is detected.
As discrepancy time monitoring progresses in the PROFIsafe I/O module, the "0"
value is output from the affected input pair to the safe PLC as a safe process
image.
Behavior of the PROFIsafe I/O module after expiration of the discrepancy
time
If the invalid input signal status is detected by the PROFIsafe I/O module longer
than the configured discrepancy time, there is a discrepancy error, the PROFIsafe
I/O module is passivated and the "Discrepancy time exceeded" diagnostic
message is output to the safe PLC. The discrepancy error can be caused, for
example, by a wire break on a signal line, a sensor error, etc.
Pos: 48.13 /Serie 750 (WAGO-I/O-SYSTEM)/In Betrieb nehmen/Parametrieren mit WAGO-I/O-CHECK/Parametrieren 750-66x/Hinweis: Verhalten der PROFIsafe-Busklemme bei Diskrepanzzeitfehlern ohne Leistungsausgänge @ 7\mod_1272291068909_21.docx @ 55692 @ @ 1
Behavior of the PROFIsafe I/O module during discrepancy time errors
If a discrepancy error is detected by the PROFIsafe I/O module, the module then
passivates all of the digital inputs. Depending on the setting of the Restart
barrier parameter, you can acknowledge the reported error(s) with or without
eliminating the cause for the error (see Section "Restart Barrier Ix & Ix+1"
Parameter).
WAGO-I/O-SYSTEM 750
753-661/000-003 4FDI 24V PROFIsafe V2 iPar
Version 1.4.0, valid from HW/SW Version 01/02
Manual