Configuration
5-16 7SJ62 Manual
C53000-G1140-C121-1
Double Point Indi-
cation (DP)
In addition to the properties entered for single point indications, a “Suppress interme-
diate position” check box is available, which may be checked to suppress the interme-
diate indication during operations. If this field is marked, then the filter time, which can
also be set (see “Filtering/Contact Chatter Suppression“ below), is only effective for
the intermediate (= undefined position) indication. Hence, briefly undefined conditions
during contact chattering will not lead to a fault message; however, defined changes
in the condition (final positions) are immediately reported.
Figure 5-14 Information Properties Example for Information Type “Double Point Indication”
(DP)
Filtering / Contact
Chatter Suppres-
sion
For input indications (single point indications 63, double point indications '3, or Trans-
former stage messages 70, if present), filter times may be entered (pickup and drop-
out delays) to suppress momentary changes in potential at the binary input (e.g. con-
tact chatter). Filtering occurs during an input change of state, with the same setting
values whether coming or going. Information is only distributed when the new state
continues to exist after a preset time interval (in milliseconds). The setting range is
from 0 to 86,400,000 ms, or 24 hours. Whether or not the filter interval is restarted for
each change of state during the filtering (filter re-triggering) is selectable.
It is also possible to set chatter suppression for each indication (Figure 5-13). The con-
tact chatter settings, themselves, are set the same for all input indications (see Section
5.2.6).
Transformer Tap
Changer (TxTap)
The transformer tap changer position is communicated, via binary inputs, in a speci-
fied encoding format (maximum of 62 positions). Only binary inputs that are in direct
order with regard to numbering can be used.
For the encoding formats available (binary code, BCD code, “1 of n” code), four set-
tings (number of positions, number of bits, display offset, and position change) may be
programmed. Their bit pattern corresponds to an individual transformer tap changer
position which is represented in the device display and in the indication buffers (Figure
5-15).
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