Configuration
5-38
7SA6 Manual
C53000-G1176-C156-2
The settings for the monitoring criteria of the chatter blocking feature are set only once
for all binary inputs; however, the status of the chatter suppression can be set individ-
ually for each binary input. See “Filtering/Contact Chatter Suppression” in Subsection
5.2.3.
The following should be noted:
• If there is contact chatter at a binary input and the input is blocked, the correspond-
ing indication will be displayed with “CCF” (example: “>Door open CCF ON”). Al-
so, the indication “Contact chatter filter” reports this condition. Both mes-
sages are shown in the operating buffer (event log).
• Chattering of a single point indication is set as ON (coming) if the binary input is ac-
tivated by energization (configured High-active).
• Chattering of a single point indication is set as OFF (going) if the binary input is de-
activated by energization (configured Low-active).
• If this behaviour causes undesired results in individual situations, an interlocking
maybeconfiguredinCFC.
• Chattering of a double point indication will be considered as an “intermediate” con-
dition.
Note:
Chatter blocking cannot be activated for any of the standard protective indications.
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